Composite Magnetic Anomaly Map of the United States
DEPARTMENT OF THE INTERIOR TO ACCOMPANY MAP GP-954A UNITED STATES GEOLOGICAL SURVEY
COMPOSITE MAGNETIC ANOMALY MAP OF THE UNITED STATES
PART A: CONTERMINOUS UNITED STATES
Compiled under the direction of
Isidore Zietz
UNITED STATES GEOLOGICAL SURVEY In cooperation with THE SOCIETY OF EXPLORATION GEOPHYSICISTS
EDITORIAL COMMITTEE Isidore Zietz, Chairman John D. Corbett Gordon P. Eaton Michael D. Fuller Richard H. Godson William F. Hanna James R. Heirtzler WilliamJ. Hinze James A Schwartz
The accompanying magnetic-anomaly map of the conterminous time of the survey, and an arbitrary zero datum; 1 (2) contour lines at an interval United States and adjacent offshore areas was compiled as a cooperative of 100 or 200 gammas were selected; (3) the map of the selected contour lines effort by the U.S. Geological Survey and the Society of Exploration was reduced to the 1:1,000,000 compilation scale; (4) the reduced map was Geophysicists (Hinze, 1976). The map is published in two sheets in color placed on an albers equal-area projection master base map of the contermin showing magnetic-anomaly contours at an interval of 200 gammas ous United States and offshore areas; (5) near the boundaries of adjacent sur (nanoteslas) with supplemental contours at an interval of 100 gammas on veys, contour lines were visually joined as smoothly as possible; and (6) where an Albers equal-area projection atthe scale of 1:2,500,000. The map may major discontinuities of anomaly values existed, contoured NURE data were be compared directly with the tectonic (U.S. Geol. Survey and Am. used to guide the connecting of contour lines; and (7) the map at the Assoc. Petroleum Geologists, 1961), Bouguer gravity anomaly (Am. 1:1,000,000 compilation scale was photographically reduced to the Geophys. Union, 1964), basement rock (Bayley and Muehlberger, 1:2,500,000 publication scale. 1968), and geologic (King and Beikman, 1974) maps of the contermin The NURE data, acquired during a 7 -year period for the conterminous ous United States published by the U.S. Geological Survey in coopera United States and referenced to the IGRF, provided a reliable base net for con tion with professional societies. trolling the compilation of individual surveys. As an independent check on the Hundreds of magnetic-data sources were used in the map compila validity of the compilation, profiles from the map were compared with a series tion. Most of them were total-intensity aeromagnetic-anomaly data; of north-south aeromagnetic traverses of the U.S. Naval Oceanographic Office others included total-intensity ground and shipborne magnetic-anomaly (NOO). The traverses were flown in 1976 and 1977 and were spaced approxi data· and vertical-intensity ground magnetic-anomaly data. Flight al mately one degree of longitude apart across the conterminous United States. titudes, directions, and spacings of aeromagnetic surveys varied widely; This comparison shows that the compiled data agree with the NOO data, after no attempt was made to analytically continue magnetic-anomaly data to adjustment to the IGRF, to within 100 gammas throughout the country. Mag a common altitude. The anomaly data were referenced to numerous mag netic profiles for the 83°W, 90°W, and 119°W meridians comparing total inten netic-field datums; however, an attempt was made to adjust most ano sity magnetic anomaly data obtained from the NOO survey with those taken maly data to a common magnetic-field datum. On the basis of compari from the composite U.S. magnetic anomaly map are shown in Figure 1. The sons with aeromagnetic-anomaly data of the U.S. Naval Oceanographic magnetic profiles along each meridian are arbitrarily displaced vertically to ef Office and the National Uranium Resource Evaluation (NURE) program fect a better visual comparison. of the Department of Energy, we inferred that the zero level of the com Individual data sources used in the map compilation are shown on index piled map is approximately 1,000 gammas higher than the zero level of maps. These index maps are keyed to the "Sources of Data" and "Specifica data based on the International Geomagnetic Reference Field (IGRF). tions" (direction, altitude, and spacing of traverses), shown later in this pam Because the quality of the map is limited by the diversity of data types, phlet. Index maps for the Atlantic Ocean, Gulf of Mexico, and Pacific Ocean data-acquisition specifications and the compilation techniques, it is are included. strongly recommended that the map be used only at the 1:2,500,000 1 Exceptions: IGRF 1965.0 not updated, was removed from total-intensity publication scale or smaller scales of interest in broad regional investiga data of reference B, Illinois; reference E, Nebraska; reference A, Ohio; andre tions. For more detailed work at scales larger than the 1:2,500,000 publi ference 2, Oregon. A field of 9 gammas per mile north and 3.2 gammas per cation scale, we recommend that original data sources be used. mile east was removed from vertical-intensity data of reference F, South Dakota. Unknown reference fields were removed from vertical-intensity data Compilation involved the following steps: (1) Magnetic anomaly data of of reference H, Missouri, and reference 38, New Mexico. It is not known a given survey were inspected and, as necessary, were referenced to the IGRF whether a reference field has been removed from the total-intensity or vertical (Fabiano and Peddie, 1969; Barraclough and Fabiano, 1978), adjusted for the intensity data of reference 26, New Mexico. CANADA UNITED STATES
FLORIDA GULF OF MEXICO NO DATA
EXPLANATION ---- Aeromagnetic profile flown by U.S. Naval Oceanographic Office GAMMAS ----- Aeromagnetic profile from map 0 0 0 ~ in this report N ~ c:>~ g:z s: 1'2
UNITED STATES MEXICO GAMMAS Figure 1.-Comparison of selected north-south ~ ~ aeromagnetic profiles from map in this report and those from the U.S. Naval Oceanographic Office ..
2 Acknowledgements References Cited The cooperative arrangement between the U.S. Geological Survey and American Geophysical Union, Special Committee for the Geophysical and the Society of Exploration Geophysicists, effected in 1975, resulted in forma Geological Study of the Continents, 1964, Bouguer gravity anomaly map tion of the National Magnetic Anomaly Map (NMAM) Committee, which inter of the United States (exclusive of Alaska and Hawaii): Washington, D.C., acted with a group of U.S. Geological Survey personnel. Current members U.S. Geological Survey, 2 sheets, scale 1:2,500,000. of the NMAM Committee are: Barraclough, D. R., and Fabiano, E. B., 1978, Grid values and charts for the WilliamJ. Hinze, Chairman (Purdue University) International Geomagnetic Reference Field-1975: U.S.Department of Anthony R. Barringer (Barringer Research Inc.) Commerce, National Technical Information Service PB-276 630, 139 p. Sheldon Breiner (Geometries) Bayley, R. W., and Muehlberger, W. R., compilers, 1968, Basement rock map LeRoy Brow (Exxon Production Research Co.) of the United States (exclusive of Alaska and Hawaii): Washington, D.C., James E. Case (U.S. Geological Survey) U.S. Geological Survey, 2 sheets, scale 1:2,500,000. Howard L. Cobb (Atlantic Richfield Co.) Fabiano, E. B., and Peddie, N. W., 1969, Grid values of total magnetic inten John D. Corbett (Anaconda Minerals Co.) sity, IGRF-1965: U.S. Environmental Science Services Administration Michael D. Fuller (University of California at Santa Barbara) Technical Report, C and GS 38, 55 p. James R. Heirtzler (Woods Hole Oceanographic Inst.) Hinze, W. J., 1976, Report of the SEG Committee for a National Magnetic Charles E. Helsley (University of Hawaii) Anomaly Map: Geophysics, v. 41, no. 5, p. 1055. Robert H. Higgs (U.S. Naval Oceanographic Office) King, P. B., and Beikman, H. M., compilers 1974, Geologic map ofthe United Robert A. Langel (U.S. National Aeronautics & Space Admin.) States (exclusive of Alaska and Hawaii): Reston, Va., U.S. Geological H. David Maclean (Gulf Mineral Resources Co.) Survey, 3sheets, scale 1:2,500,000. Emil J. Mateker, Jr. (Aero Service Co.) U.S. Geological Survey and American Association of Petroleum Geologists, AlfredJ. Navazio (Carson Helicopters) 1961, Tectonic map of the United States (exclusive of Alaska and George Podolsky (Kidd Creek Mines Ltd.) Hawaii):Washington, D.C., U.S. Geological Survey, 2 sheets, scale MichaelS. Reford (Geoterrex Ltd.) 1:2,500,000. James A. Schwartz (Gulf Oil Exploration and Production Co.) Paul H. Serson (Canada Dept. of Energy, Mines & Resources) Kendall L. Svendsen (U.S. National Oceanic & Atmospheric Admin.) Eric E. Wicherts (Amoco International Co.) RichardJ. Wold (U.S. Geological Survey) Isidore Zietz (Phoenix Corp.) W. Glen Zinn (Moly Corp. Inc.) Previous members of the committee and their affiliation during their period of participation are: Joseph W. Berg, Jr. (National Academy of Sciences) Bimal K. Bhattacharyya (Deceased) (U.S. Geological Survey) Ernest J. lufer (U.S. National Aeronautics & Space Admin.) John F. Landau (Gulf Research & Development Co.) P. L. Lawrence (Mobil Oil Corporation) D. Beadle Moore (Exxon Co., U. S. A.) Robert F. McMahon (Chevron Oil Co.) Robert D. Regan (U.S. Geological Survey) U.S. Geological Survey coordinators of the cooperative effort were Mar tin F. Kane, William F. Hanna, Gordon P. Eaton, and Charles J. Zablocki. Richard D. Hovey (Chevron Overseas Petroleum Co.) and Val W. Chandler (Minnesota Geological Survey) assisted the Editorial Committee in reviewing selected areas of preliminary versions of the map. The Amoco Production Company, Chevron Oil Company, Gulf Oil Cor poration, and Mobil Exploration and Production Services contributed data to the map. Compilation of the map was performed by Kevin R. Bond, Francis P. Gilbert (Deceased), John R. Kirby, Frederic E. Riggle, and Stephen L. Snyder, all of the U.S. Geological Survey.
3 ALABAMA
88° 87" 86° SOURCES OF DATA 35°\ ------l --, Carson Helicopters, Inc., 1980, National Uranium Resource Evalua \ tion aerial gamma-ray and magnetic reconnaissance survey of por \ tions of Alabama, Georgia, Kentucky, Maryland, North Carolina, I F K Ohio, Pennsylvania, Virginia, and West Virginia, Rome quad :A \ rangle-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 92-80, v. 2, n.p., scale 1:500,000. EG&G GeoMetries, 1980a, National Uranium Resource Evaluation ae 34° I rial gamma-ray and magnetic reconnaissance survey, Meridian I quadrangle, Mississippi and Alabama-Final Report: U.S. Depart \ ment of Energy Grand Junction Office [Report] GJBX 154-80, v. I 2, n.p., scale 1:500,000. I \ ___ 1980b, National Uranium Resource Evaluation aerial I B G \ \ gamma-ray and magnetic reconnaissance survey, Hattiesburg quadrangle, Mississippi, Alabama, and Louisiana-Final Report: I U.S. Department of Energy Grand Junction Office [Report] GJBX I \ 33° 155-80, v. 2, n.p., scale 1:500,000. \ ___ 1980c, National Uranium Resource Evaluation aerial I gamma-ray and magnetic reconnaissance survey, West Point I \85° quadrangle, Mississippi and Alabama-Final Report: U.S. Depart I c H ' ment of Energy Grand Junction Office [Report] GJBX 181-80, v. 2, n.p., scale 1:500,000. I ___ 1980d, National Uranium Resource Evaluation aerial N gamma-ray and magnetic reconnaissance survey, Tupelo quad 32°- rangle, Mississippi, Alabama, and Tennessee -Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 203- \ 80, v. 2, n.p., scale 1:500,000. \ ___ 1980e, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey, Mobile quad D I o I rangle, Louisiana, Mississippi, and Alabama-Final Report: U.S. I Department of Energy Grand Junction Office [Report] GJBX 222- \. 80, v. 2, n.p., scale 1:500,000. 31'- ___ 1981a, National Uranium Resource Evaluation aerial I gamma-ray and magnetic survey, Dothan quadrangle, Georgia ' and Alabama-Final Report: U.S. Department of Energy Grand E J \ Junction Office [Report] GJBX 121-81, v. 2, n.p., scale I 50 100 MILES 1:500,000. ' ___ l981b, National Uranium Resource Evaluation aerial 50 100 gamma-ray and magnetic survey, Pensacola quadrangle, Florida and Alabama -Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 122-81, v. 2, n.p., scale 1:500,000. SPECIFICATIONS ___ 1981c, National Uranium Resource Evaluation aerial A East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, 1980d) gamma-ray and magnetic survey, Andalusia quadrangle, Alabama B East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, 1980c) -Final Report: U.S. Department of Energy Grand Junction Office C East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, 1980a) [Report] GJBX 123-81, v. 2, n.p., scale 1:500,000. D East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, 1980b) Geodata International, Inc., 1980a, National Uranium Resource E East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, 1980e) Evaluation aerial radiometric and magnetic survey, Montgomery F East-West, 400 feet above ground, 6 mile (North half) and 3 mile quadrangle-Final Report: U.S. Department of Energy Grand (South half) (High Life/OEB, 1980) Junction Office [Report] GJBX 101-80, v. 2, n.p., scale G East-West,400feetaboveground, 3 mile (High Life/OEB, 1980) 1:500,000. H East-West, 400feet above ground, 3 mile (North half) and 6 mile ___ 1980b, National Uranium Resource Evaluation aerial (South half) (Geodata, 1980a) radiometric and magnetic survey, Phenix City quadrangle, I East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, 1981 c) Alabama and Georgia-Final Report: U.S. Department of Energy J East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, 1981 b) Grand Junction Office [Report] GJBX 101-80, v. 2, n.p., scale K East-West, 400 feet above ground, 6 mile (Carson Helicopters, 1980) 1:500,000. L Northwest-Southeast, 1000 feetterrain clearance, 1% mile Geoterrex Limited, 1969, High sensitivity reconnaissance aeromagne (Geoterrex, 1969) tic survey of portions of Alabama and Tennessee, scale M North-South, 152 meters above ground, 1.6 kilometers 1:500,000. (Neathery and others, 1976) High Life Helicopters, Inc./QEB, Inc., 1980, National Uranium Re- N East-West,400feetaboveground, 6 mile (Geodata, 1980b) source Evaluation aerial gamma-ray and magnetic reconnaissance 0 East-West, 400feet above ground, 6 mile (EG&G GeoMetries, 1981 a) survey (F) Gadsden quadrangle, (G) Birmingham quadrangle Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 70-80, v. 2, n.p., scale 1:500,000. Neathery, T. L., Bentley, R. D., Higgins, M. W., and Zietz, Isidore, 1976, Preliminary interpretation of aeromagnetic and aeroradioactivity maps of the Alabama piedmont: Geology, v . .ti, no. 6, p. 375-381.
_/ ...... _
4 ARIZONA
SOURCES OF DATA 114° 113° 112° 111° 110° 109° 37" ---t- EG&G GeoMetries, Inc., 1979a, National Uranium Resource Evaluation I ---- aerial gamma-ray and magnetic survey, Raton Basin Project, I \ Flagstaff quadrangle, Arizona-Final Report: U.S. Department of A~ H Energy Grand Junction Office [Report] GJBX 157-79, v. 2, n.p., scale 1:500,000. ,-/~_ _/ ___ 1979b, National Uranium Resource Evaluation aerial gamma 36" ray and magnetic survey, Raton Basin Project, Shiprock and Gallup B quadrangles, Arizona/New Mexico and Albuquerque quadrangle, I New Mexico-Final Report: U.S. Department of Energy Grand \ G I Junction Office [Report] GJBX 116-79, v. 2, n.p., scale 1:500,000. LKB Resources, Inc., 1980, National Uranium Resource Evaluation ae 35° \ rial gamma-ray and magnetic reconnaissance survey, Colorado/ Arizona area, Salton Sea, El Centro, Phoenix, Ajo and Lukeville ' quadrangles-Final Report: U.S. Department of Energy Grand \ Junction Office [Report] GJBX 12-80, v. 2, n. p., scale 1:500,000. "'' c Mitchell, C. M., and Zandle, G. L., 1965, Aeromagnetic map of the Casa 34°- Grande area, Maricopa and Pinal Counties, Arizona: U.S. Geological Survey Geophysical Investigations Map GP-548, scale 1:62,500. D Sauck, W. A., and Sumner, J. S., 1970, Residual aeromagnetic map of ( Arizona: Tucson, Ariz., University of Arizona Department of Geosci I ences, The Laboratory of Geophysics, scale 1:500,000. 33° - Texas Instruments, Inc., 1979, National Uranium Resource Evaluation aerial radiometric and magnetic reconnaissance survey of portions I E of Arizona-New Mexico, Douglas quadrangle-Final Report: U.S ...... Department of Energy Grand Junction Office [Report] GJBX 23-79, v. 2f, n.p., scale 1:500,000. ~2".... U.S. Geological Survey, 1972a, Aeromagnetic map of the Gold Butte ., Chloride area, Arizona and Nevada: U.S. Geological Survey 0 N I Geophysical Investigations Map GP-75 7, 2 sheets, scale 1:62,500...... ___ 1972b, Aeromagnetic map of the Morenci-Monticello area, ------~ southeastern Arizona and southwestern New Mexico: U.S. Geologi cal Survey Geophysical Investigations Map GP-838, scale 0 50 100 MILES I I I I I 1:250,000. 'Ill 1111 I I 0 50 100 150 KILOMETERS ___ 1979, Aeromagnetic map of the north and west parts of th·e Silver City 1 o by 2° quadrangle, New Mexico and Arizona: U.S. Geological Survey Open-File Report 79-1452, 5 sheets, scale 1:62,500. SPECIFICATIONS Western Geophysical Co. of America, 1979, National Uranium Resource A East-West,400feetaboveground, 3 mile (Western Evaluation aerial gamma-ray and magnetic survey of Las Vegas, Geophysical Co., 1979) Kingman, Williams, and Prescott quadrangles, Nevada, California, B North-South,8000feetbarometric, 1 mile(USGS, 1972a) and Arizona-Final Report: U.S. DepartmentofEnergyGrandJunc C North-South, 9000feetabove sea level,3 mile (Sauck and tionOffice [Report] GJBX59-79, v. 2, n.p., scale 1:500,000. Sumner, 1970) D North-South, 400feet above ground, 3 mile (LKB Resources, Inc., 1980) E East-West,400feetabove ground, 6 mile (LKB Resources, Inc., 1980). F North-South, 2400feet barometric, 1 mile (Mitchell and Zandle, 1965) G East-West, 400 feet aboveground, 3 mile (EG&G GeoMetries, Inc., 1979a) H East-West,400feetaboveground,3mile (EGBtG GeoMetries, Inc., 1979b) I East-West,400feetaboveground, 3 mile (EG&G GeoMetries, Inc., 1979b) J North-South, 11 ,OOOfeetabovesea level,3 mile (Sauck and Sumner, 1970) K East-West, 10,500feetbarometric, 1 mile(USGS, 1972b) L East-West, 1500feet mean terrain clearance, 0.6 mile (USGS, 1979) M North-South, 1500feetmeanterrainclearance, 1 mile (USGS, 1979) N North-South,400feetabove ground,3 miiEHTexas Instruments, Inc., 1979) 0 North-South, 9000feetabovesea level, 1.5mile.(Sauckarld Sumner, 1970)
5 ARKANSAS
SOURCES. OF DATA ,--- 1------~------\. EG&G GeoMetries, Inc., 1980a, National Uranium Resource Evaluation I aerial gamma-ray and magnetic reconnaissance survey, Nebraska \ A E I / I / go• Texas Project, Tyler, Texarkana, and Waco quadrangles of Texas, 36" I --, Oklahoma, Arkansas, and Louisiana-Final Report: U.S. Depart ment of Energy Grand Junction Office [Report] GJBX 69-80, v. 2, \ n.p., scale 1:500,000. I B F J ? ___ 1980b, National Uranium Resource Evaluation aerial gamma I ~I ray and magnetic reconnaissance survey, Harrison quadrangle, Mis I souri and Arkansas-Final Report: U.S. Department of Energy s· _j_ ,..1 Grand Junction Office [Report] GJBX 150-80, v. 2, n.p., scale I / 1:500,000. ,.\ ___ 1980c, National Uranium Resource Evaluation aerial gamma I ray and magnetic reconnaissance survey, Memphis quadrangle, Ar I c G K kansas, Missouri and Tennessee-Final Report: U.S. Department of I f) Energy Grand Junction Office [Report] GJBX 179-80, v. 2, n.p., I If scale 1:500,000. I } ___ 1980d, National Uranium Resource Evaluation aerial gamma ray and magnetic reconnaissance survey, El Dorado quadrangle, I D ~ \...:-1 \ Louisiana and Arkansas-Final Report: U.S. Department of Energy H L Grand Junction Office [Report] GJBX 182-80, v. 2, n.p., scale ~ 1:500,000. \ I J ___ 1980e, National Uranium Resource Evaluation aerial gamma I ___ j_ 33°-1. ------ray and magnetic reconnaissance survey, Greenwood quadrangle, Mississippi, Arkansas, and Louisiana-Final Report: U.S. Depart 50 100 MILES ment of Energy Grand Junction Office [Report] GJBX 183-80, v. 2, t-r-'-r'',, •.__,,rl~.-o __.___.,----L,'o.-1 o_,_,__.___._,.5,...... ~o~ILOMETERS n.p., scale 1:500,000. ___ 1980f, National Uranium Resource Evaluation aerial gamma ray and magnetic reconnaissance survey, Fort Smith quadrangle, Oklahoma and Arkansas-Final Report: U.S. Department of Energy SPECIFICATIONS Grand Junction Office [Report] GJBX 200-80, v. 2, n.p., scale A East-West, 400feetaboveground, 3 mile (Texas Instruments, Inc., 1978) 1:500,000. B East-West,400feetaboveground, 6 mile (EG&G GeoMetries, 1980f) ___ 1980g, National Uranium Resource Evaluation aerial gamma C East-West,400feetabove ground, 6 mile (Geo-Life, 1979b) ray and magnetic reconnaissance survey, Helena quadrangle, Ar D East-West, 400feetabove ground, 3 mile (EG&G GeoMetries, 1980a) kansas, Mississippi, and Tennessee-Final Report: U.S. Department E East-West,400feetaboveground, 6 mile (EG&G GeoMetries, 1980b) of Energy Grand Junction Office [Report] GJBX 201-80, v. 2, n.p., F East-West,400feetaboveground, 6 mile (EG&G GeoMetries, 1980h) scale 1:500,000. G North-South,400feetabove ground, 3 mile (Geo-Life, 1979a) ___ 1980h, National Uranium Resource Evaluation aerial gamma H East-West,400feetabove ground, 6 mile (EG&G GeoMetries, 1980d) ray and magnetic reconnaissance survey, Russellville quadrangle, I East-West,400feetabove ground,3 mile (Texas Instruments, Inc., 1980) Arkansas-Final Report: U.S. DepartmentofEnergyGrandJunction J East-West,400feetabove ground, 6 mile (EG&G GeoMetries, 1980c) Office [Report] GJBX204-80, v. 2, n.p., scale 1:500,000. K East-West,400feetaboveground, 6 mile (EG&G GeoMetries, 1980g) ___ 1980i, National Uranium Resource Evaluation aerial gamma L East-West,400feetaboveground, 6 mile (EG&G GeoMetries, 1980e) ray and magnetic reconnaissance survey,Blytheville quadrangle, M East-West, 400 feet aboveground, 6 mile (EG&G GeoMetries, 1980i) Tennessee, Arkansas, Alabama, and Missouri-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 205- 80, v. 2, n.p., scale 1:500,000. Geo-Life (A joint venture between High Life Helicopters, Inc. and Geodata International, Inc.), 1979a, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey, Little Rock National Topographic Map, Arkansas-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 115-79, v. 2, n.p., scale 1:500,000. ___ 1979b, National Uranium Resource Evaluation aerial gamma ray and magnetic reconnaissance survey, McAlester National To pographic Map, Arkansas and Oklahoma-Final Report: U.S. De partment of Energy Grand Junction Office [Report] GJBX 174-79, v. 2, n.p., scale 1:500,000. Texas Instruments, Inc., 1978, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey, Great Plains, Tulsa quadrangle, Oklahoma, Missouri, and Arkansas-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 100-78, v. 2N, n.p., scale 1:500,000. ___ 1980, National Uranium Resource Evaluation aerial gamma ray and magnetic reconnaissance survey of portions of Arkansas, Il linois Indiana, Kentucky, Missouri, and Tennessee: Poplar Bluff quadrangle-Final Report: U.S. Department of Energy Grand Junc tion Office [Report] GJBX42-80, v. 2, n.p., scale 1:500,000.
6 CALIFORNIA
124°
' ' """ ' 116°
\ \ DDD l ' ) / I
I EEE FFF I ),_ 0 so 100 MILES I I II I I II I .11 I II I GGG 0 50 100 150 KILOMETERS ------
7 SPECIFICATIONS A East-West, 8500 feet barometric, 1 mile (Hotz and others, HH Specifications unknown (unpublished data) 1972) II Individual high altitude flight lines (unpublished data) B Unknown, 8000 feet barometric, unknown (Cal. Div. of JJ Vertical intensity ground survey, 1 mile (unpublished data) Mines and Geol., 1979) KK Northwest-Southeast, 6500 feet barometric, 4 mile (Hanna C Unknown, 7000 feet barometric, unknowil (Cal. Div. of and others, 1972) Mines and Geol., 1979) LL Specifications unknown (unpublished data) D Unknown, 9500 feet barometric, unknown (Cal. Div. of MM Northeast-Southwest, 6500 feet barometric, 1 mile (Hanna, Mines and Geol., 1979) 1970) E Northeast-Southwest, 2900 meters barometric, 8 kilometers NN Northeast-Southwest, 6500 feet mean sea level, 1 mile (unpublished data) (USGS, 1974e) F Specifications unknown (unpublished data) 00 Northeast-Southwest, 1000 feet terrain clearance, 0.5 mile G East-West, 7000 feet barometric, 1 mile (Brown and others, (USGS, 1980a) 1978) PP East-West, 400 feet above ground, 3 mile (High Life H East-West, 4500 feet barometric, 1 mile (USGS, 1973) Helicopters, lnc./OEB, Inc., 1980a) I Specifications unknown (Affleck, 1962) QQ North-South, 9000 feet barometric, 1 mile (USGS, 1975a) J Specifications unknown (unpublished data) RR North-South, 1000 feet above ground, 2 mile (USGS, 1980b) K Northeast-Southwest, 3000 feet mean sea level, mile SS North-South, 500 feet above ground, 1 mile (Andreasen and (USGS, 1974c) others, 1964c) L Northeast-Southwest, 3000 feet mean sea level, mile TT North-South, 500 feet above ground, 1 mile (Andreasen and (USGS, 1974b) others, 1964a) M East-West, 1000 feet above ground, 1 mile (USGS, 1971c) UU North-South, 500 feet above ground, 1 mile (Andreasen and N Northeast-Southwest, 6000 feet barometric, 5 mile (Zietz others, 1964b) and others, 1969) W East-West, 400 feet above ground, 6 mile (High Life 0 Northeast-Southwest, 500 feet above ground, 1 mile (Meus Helicopters, lnc./QEB, Inc., 1980b) chke and others, 1966) WW East-West, 400 feet above ground, 3 mile (High Life P Northeast-Southwest, 3000 feet barometric, 3 mile (Cady, Helicopters, lnc./QEB, Inc., 1980b) 1975) XX East-West, 14,000 feet barometric, 1 mile (unpublished Q Northeast-Southwest, 4000 feet barometric, 3 mile (Cady, data) 1975) YY East-West, 1000 feet terrain clearance, 0.5 mile (USGS, R North-South, 3500 feet barometric, 0.5 mile (USGS, 1976) 1979) S North-South, 5500 feet barometric, 0.5 mile (USGS, 1976) ZZ North-South, 400 feet above ground, 1 mile (Geo-Life, T East-West, 9000 feet barometric, 1 mile (USGS, 1971b) 1979a) U East-West, 11,000 feet barometric, 1 mile (USGS, 1971b) AAA East-West, 400 feet above ground, 3 mile (High Life V East-West, 1000 feet above ground, 0.5 mile (USGS, 1969a) Helicopters, lnc./QEB, Inc., 1980b) W East-West, 1000 feet above ground, 0.5 mile (Henderson BBB East-West, 400 feet above ground, 3 mile (Geo-Life, 1979b) and others, 1966) CCC East-West, 400 feet above ground, 3 mile (High Life X East-West, 11,500 feet above sea level, 1 mile (Tooker and Helicopters, lnc./QEB, Inc., 1980a) others, 1970) DDD East-West, 9000 feet barometric, 3 mile (USGS, 1975b) Y Specifications unknown (unpublished data) EEE East-West, 400 feet above ground, 3 mile (High Life Z East-West, 13,500 feet above sea level, 1 mile (USGS, Helicopters, lnc./QEB, Inc., 1980a) 1974d) FFF North-South, 400 feet above ground, 3 mile (LKB Re AA East-West, 9000 feet barometric, 1 mile (USGS, 1971a) sources, Inc., 1980) BB East-West, 15,000 feet barometric, 1 mile (USGS, 1971a) GGG East-West, 400 feet above ground, 3 mile (High Life CC East-West, 500 feet above ground, 1 mile (Henderson and Helicopters, lnc./OEB, Inc., 1980a) others, 1963) HHH East-West, 400 feet above ground, 6 mile (LKB Resources, DD East-West, 13,500 feet barometric, 1 mile (USGS, 1969b) Inc., 1980) EE East-West, 8000 feet barometric, 1 mile (USGS, 1969b) Ill East-West, 12,500 feet barometric, 5 mile (unpublished FF East-West, 2500 feet barometric, 1 mile (USGS, 1969b) data) GG Northeast-Southwest, 3000 feet mean sea level, 1 mile (USGS, 1974a)
8 SOURCES OF DATA Affleck, James, 1962, Exploration for petroleum by the magnetic LKB Resources, Inc., 1980, National Uranium Resource Evaluation ae method, in Nagata, Takesi, ed., Benedum earth magnetism sym rial gamma-ray and magnetic reconnaissance survey, Colorado posium: Pittsburgh, Pennsylvania, University of Pittsburgh Press, p. Arizona area, Salton Sea, El Centro, Phoenix, Ajo, and Lukeville 159-175. quadrangles-Final Report: U.S. Department of Energy Grand Andreasen, G. E., Pitkin, J. A., and Petrafeso, F. A., 1964a, Aeromagne Junction Office [Report] GJBX 12-80, v. 2, n.p. scale 1:500,000. tic map of eastern Los Angeles and vicinity, California: U.S. Geologi Meuschke,J. L., Pitkin,J. A., and Smith, C. W., 1966, Aeromagnetic map cal Survey Geophysical Investigations Map GP-465, scale 1:48,000. of Sacramento and vicinity, California: U.S. Geological Survey ___ , 1964b, Aeromagnetic map of the Long Beach-Santa Ana area, Geophysical Investigations MapGP-574, scale 1:250,000. Los Angeles and Orange Counties, California: U.S. Geological Sur Tooker, E. W., Morris, H. T., and Fillo, P. V., 1970, Mineral resources vey Geophysical Investigations Map GP-464 scale 1:48,000. of the Emigrant Basin primitive area, California, with a section on ___ , 1964c, Aeromagnetic map of western Los Angeles and vicin- geophysical studies by H. W. Oliver: U.S. Geological Survey Bulletin ity, California: U.S. Geological Survey Geophysical Investigations 1261-G, 70 p. MapGP-466scale 1:48,000. U.S. Geological Survey, 1969a, Aeromagnetic map of the northern Brown, R. D., Jr., Grimes, D. J., and Reinhardt, Leinz, 1978, Mineral Re Mother Lode area, California: U.S. Geological Survey Geophysical sources of the Snow Mountain Wilderness study area, California, Investigations MapGP-671, scale 1:62,500. with a section on aeromagnetic data by Andrew Griscom and R. D. ___ 1969b, Aeromagnetic strip map across the central Sierra Brown, Jr: U.S. Geological Survey Open-File Report 78-296,81 p., Nevada, California: U.S. Geological Survey Geophysicallnvestiga 4pls. tionsMapGP-657, scale 1:125,000. Cady, J. W., 1975, Magnetic and gravity anomalies in the California ___ 1971a, Aeromagnetic map of parts of the Goldfield, Mariposa Great Valley and western Sierra Nevada metamorphic belt: Geologi and Death Valley 1 o by 2° quadrangles, Nevada-California: U.S. cal Society of America Special Paper 168, 56 p. Geological Survey Geophysical Investigations Map GP-753, scale California Division of Mines and Geology, 1979, Aeromagnetic map of 1:250,000. the Modoc area, California: California Division of Mines and Geol ___ 1971b, Aeromagnetic map of parts of the Walker Lake, Reno, ogy Open-File Report78-13ASAC, scale 1:250,000. Chico, and Sacramento 1 o by 2o quadrangles, Nevada-California: Geo-Life (A joint venture between High Life Helicopters, Inc. and U.S. Geological Survey Geophysical Investigations Map GP-751, Geodata International, Inc.), 1979a, National Uranium Resource scale 1:250,000. Evaluation aerial radiometric and magnetic survey, Death Valley Na ___ 1971c, Aeromagnetic map of the southern part of the San Fran tional Topographic Map, California and Nevada-Final Report: U.S. cisco Bay region, California: U.S. Geological Survey Open-File Re Department of Energy Grand Junction Office [Report] GJBX 164- port, scale 1:125,000. 79, v. 2, n.p. scale 1:500,000. ___ 1973, Aeromagnetic map of the Clear Lake area, Lake, ___ 1979b, National Uranium Resource Evaluation aerial Sonoma, Napa, and Mendocino Counties, California: U.S. Geologi radiometric and magnetic survey, Trona National Topographic Map, cal Survey Open-File Report, scale 1:62,500. California-Final Report: U.S. Department of Energy Grand Junc ___ 197 4a, Aeromagnetic map of parts of the San Jose, Santa Cruz, tion Office [Report] GJBX65-79, v. 2, n.p. scale 1:500,000. and San Francisco 1 o by 2o quadrangles, California: U.S. Geological Hanna, W. F., 1970, Aeromagnetic and gravity features of the western Survey0pen-FileReport74-79, scale 1:125,000. Franciscan and Salinian basement terranes between Cape San Mar ___ 1974b, Aeromagnetic map of parts of the San Jose, Santa Rosa, tin and San Luis Obispo, California: U.S. Geological Survey Profes and Sacramento 1 o by 2o quadrangles, California: U.S. Geological siona1Paper700-B, p. B66-B77. Survey Open-File Report 7 4-80, scale 1:125,000. Hanna, W. F., Brown, R. D., Jr., Ross, D. C., and Griscom, Andrew, ___ 1974c, Aeromagnetic map of parts of the Santa Rosa and San 1972, Aeromagnetic reconnaissance and generalized geologic map Francisco 1 o by 2o quadrangles, California: U.S. Geological Survey of the San Andreas fault between San Francisco and San Bernar Open-File Report74-81, scale 1:125,000. dino, California: U.S. Geological Survey Geophysical Investigations ___ 1974d, Aeromagnetic map of parts of the Walker Lake and MapGP-815, scale 1:250,000. Mariposa 1 o by 2° quadrangles, eastern California: U.S. Geological Henderson, J. R., Jr., Stromquist, A. A., and Jespersen, Anna, 1966, Survey Open-File Report 7 4-109, scale 1:250,000. Aeromagnetic map of parts of the Mother Lode gold and Sierra ___ 1974e, Aeromagnetic map of the Cholame-Taft area, south Foothills copper mining districts, California, and its geologic inter western California: U.S. Geological Survey Open-File Report 74-8, pretation: U. S. Geological Survey Geophysical Investigations Map scale 1:125,000. GP-561, scale 1:62,500. ___ 1975a, Aeromagnetic map of Santa Barbara and vicinity, Henderson, J. R., Jr., White, B. L., and others, 1963, Aeromagnetic map California: U.S. Geological Survey Open-File Report 75-132, scale of Long Valley and northern Owens Valley, California: U.S. Geolog 1:125,000. ical Survey Geophysical Investigations Map GP-329, scale ___ 1975b, Aeromagnetic map of southeastern California and part 1:62,500. of southern Nevada: U.S. Geological Survey Open-File Report 75- High Life Helicopters, lnc./QEB, Inc., 1980a, National Uranium Re 52, scale 1:250,000. source Evaluation airborne gamma-ray spectrometer and magneto ___ 1976, Preliminary aeromagnetic maps of Nevada City and Al meter survey, Los Angeles, San Bernardino, Santa Ana, and San leghany 15-minute quadrangles, California: U.S. Geological Survey Diego (California) quadrangles-Final Report: U.S. Department of Open-File Report 76-274, scale 1:62,500. Energy Grand Junction Office [Report] GJBX 214-80, v. 2, n.p. ___ 1979, Aeromagnetic map of the Golden Trout area, California: scale 1:500,000. U.S. Geological Survey Open-File Report 79-1459, scale 1:62,500. ___ 1980b, National Uranium Resource Evaluation airborne ___ 1980a, Aeromagnetic map of the Los Padres area, California: gamma-ray spectrometer and magnetometer survey, Mariposa U.S. Geological Survey Open-File Report 80-986, 8 sheets, scale quadrangle (California and Nevada), Fresno,quadrangle (Califor 1:62,500. nia), and Bakersfield quadrangle (California) -Final Report: U.S. ___ 1980b, Aeromagnetic map of the Ventura basin, Ventura and Department of Energy Grand Junction Office [Report] GJBX 231- Los Angeles Counties, California: U.S. Geological Survey Open-File 80, v. 2, n.p. scale 1:500,000. Report80-64, scale 1:62,500. Hotz, P. E., Thurber, H. K., Marks, L. Y., and Evans, R. K., 1972, Mineral Zietz, Isidore, and others 1969, Aeromagnetic investigation of crustal Resources of the Salmon-Trinity Alps Primitive Area, California, with structure for a strip across the western United States: Geological So a section on an aeromagnetic survey and interpretation by Andrew ciety of America Bulletin, v. 80, no. 9, p. 1703-1714, 1 pl. Griscom: U.S. Geological Survey Bulletin 1371-B, 267p.
9 .. COLORADO
41o ~ 108o 107o 106" 1W 104o 103o 102o : ----f------r----:_-----1-----r------\ 1 J M N A I I I I I 400 J I I B G f-I~ I I \ I CJ 1\ 39° J I I H I I I I I Q I I F c I I I 38° l K I I I
,.1~~~-- ---L------0---- .,__ ___ t___ l
50 100 150 KILOMETERS
SPECIFICATIONS Petty, A. J., Vargo, J. L., and Smith, F. C., 1966, Aeromagnetic map of A East-West, 13,000feetbarometric, 1 mile(USGS, 1970b) the Denver area, Colorado: U.S. Geological Survey Geophysicalln B East-West, 14,000feetbarometric, 1 mile(USGS, 1968) vestigationsMapGP-557, scale 1:250,000. C East-West, 14,500feetbarometric, 1 mile(USGS, 1970a) Texas Instruments, Inc., 1978a, National Uranium Resource Evaluation D East-West,8500feetbarometric, 1 mile(CaseandJoesting, 1972) aerial radiometric and magnetic reconnaissance survey of portions E East-West, 10,000feetbarometric, 1 mile(CaseandJoesting, 1972) of the Great Plains and Central Lowlands, La Junta quadrangle F East-West,500feetaboveground, 1 mile(CaseandJoesting, 1972) Final report: U.S. Department of Energy Grand Junction Office [Re G East-West, 500feetabove ground, 1 mile (Petty and others, 1966) port] GJBX 100-78, v. 21, n.p., scale 1:500,000. H East-West, 14,500feetbarometric,2mile(USGS, 1978) ___ 1978b,National Uranium Resource Evaluation aerial radiomet I East-West, 14,500feet barometric, 5 mile (Zietz, and Kirby, 1972) ric and magnetic reconnaissance survey of portions of the Great J East-West, 14,500feetto 16,000feetbarometric, 5 mile (Zietz and Plains and Central Lowlands, Lamar quadrangle-Final report: U.S. others, 1969) Department of Energy Grand Junction Office [Report] GJBX 100- K East-West, 14,500feetbarometric, 1 mile(USGS, 1972) 78, v. 2J, n.p., scale 1:500,000. L East-West, 14,000feetbarometric, 1 mile(USGS, 1972) ___ 1980, National Uranium Resource Evaluation aerial radiomet M East-West,400feetabove ground, 3 mile (Geo-Life, 1979) ric and magnetic reconnaissance survey of south-central Colorado, N East-West,400feetaboveground, 3 mile (LKB Resources, Inc., 1979) Trinidad quadrangle-Final report: U.S. Department of Energy 0 East-West,400feetaboveground, 3 mile (Texas Instruments, Inc., 1980) Grand Junction Office [Report] GJBX 59-80, v. 2, n.p., scale P East-West,400feetaboveground, 5 mile (Texas Instruments, Inc., 1978a) 1:500,000. Q East-West,400feetabove ground, 5 mile (Texas Instruments, Inc., 1978b) U.S. Geological Survey, 1968, Aeromagnetic map of the Wolcott-Boul der area, north-central Colorado: U.S. Geological Survey Open-File Report, scale 1:125,000. ___ 1970a, Aeromagnetic map of the Cripple Creek-Saguache area, south-central Colorado: U.S. Geological Survey Open-File Re port, 3 sheets, scale 1:62,500. SOURCES OF DATA ___ 1970b, Aeromagnetic map of North Park and vicinity, north Case, J. E., and Joesting, H. R., 1972, Regional geophysical investiga central Colorado: U.S. Geological Survey Open-File Report, scale tions in the central Colorado Plateau: U.S. Geological Survey Pro 1:125,000. fessional Paper 736, 31 p., 3 pis. ___ 1972, Aeromagnetic map of the Ridgway-Pagosa Springs area, Geo-Life (A joint venture between High-Life Helicopters, Inc., and southwestern Colorado: U.S. Geological Survey Geophysicallnves Geodata International, Inc.), 1979, National Uranium Resource tigationsMapGP-840, scale 1:250,000. Evaluation aerial radiometric and magnetic survey, Vernal National ___ 1978, Aeromagnetic map of Arkansas Valley and vicinity, Col Topographic Map, Colorado and Utah-Final report: U.S. Depart orado: U.S. Geological Survey Open-File Report, 78-112, scale ment of Energy Grand Junction Office [Report] GJBX 167-79, v. 2, 1:125,000. n.p., scale 1:500,000. Zietz, Isidore, and others, 1969, Aeromagnetic investigations of crustal LKB Resources, Inc., 1979, National Uranium Resource Evaluation ae structure for a strip across the western United States: Geological So rial radiometric and magnetic reconnaissance survey, Colorado/ cietyofAmericaBulletin, v. 80, no. 9, p. 1703-1714,1 pl. Arizona area, Craig quadrangle -Final report: U.S. Department of Zietz, Isidore, and Kirby, John R., 1972, Aeromagnetic map of Colorado: Energy Grand Junction Office [Report] GJBX 153-79, v. 2, n.p., U.S. Geological Survey Geophysical Investigations Map GP-880, scale 1:500,000. scale 1:1,000,000.
10 CONN., MASS., N.H., R. 1., VT.
50 100 MILES r.~T.-r~-J--~~~_,~ 50 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A East-West,4000feetbarometric, 2 mile (Zietz and Heirtzler, J. R., 1971, Magnetic anomalies measured at sea, in The sea: others, 1972) New York, Wiley-Interscience, v. 4, pt. 1, p. 85-128. 8 North-South, 3500 feet barometric, 1f2 mile (Zietz and Taylor, P. T., Zietz, Isidore; and Dennis, L. S., 1968, Geologic implica others, 1972) tions of aeromagnetic data from the eastern continental margin of the C North-South, 1000feetabove·ground, 1f2 mile (Zietz and United States: Geophysics, v. 33, no. 5, p. 755-780. others, 1972) Zietz, Isidore, Gilbert, F. P., and Kirby, J. R., Jr., 1972, Northeastern D East-West,2300feetbarometric, %mile(Zietzand United States regional aeromagnetic maps: U.S. Geological Survey others, 1972) Open-File Report, 13 sheets, scale 1:250,000. (Aeromagnetic map E East-West, 5500feet barometric,% mile (Zietz and of Connecticut, Massachusetts, New Hampshire, Rhode Island, Ver others, 1972) mont, and part of New York: U.S. Geological Survey Geophysical F East-West,5000feetbarometric, Y2mile(Zietzand Investigations Map GP-928, scale 1:1,000,000.) others, 1972) G East-West, 500feetabove ground, 1 mile (Zietz and others, 1972) H East-West, 2200feet barometric, 2 mile (Zietz and others, 1972) I East-West, 750 feet above ground,% mile (Zietz and others, 1972) J East-West, 500feetaboveground,% mile (Zi'etzand others, 1972) K East-West,400feetaboveground, Y2mile(Zietzand others, 1972) L Shipborne survey, specifications unknown (Zietz and others, 1972; Heirtzler, 1971) M Northwest-Southeast, 500to 2500feet barometric, 5 mile (Zietz and others, 1972; Taylor and others, 1968) N North-South,400feetaboveground, %mile(Zietzand others, 1972) 11 DEL., MD., N.J., PA., WASH., D. C.
yl80° ..... , 79° 42"....-----+------I \
B
I 41°-r----~------l--l--l------1---l------1------l----+----.~------r--rc D
PENN YLVANIA A
JJER§EY
0
I '/(,/
50 100 MILES
50 100 150 KILOMETERS
SPECIFICATIONS A North-South, 500 feet above ground, 1 mile (Popenoe and L East-West, 500 feet above ground,% mile (Bromery, 1967) others, 1964) M Northwest-Southeast, 500 feet above ground,% mile (Bromery B North-South, 1000 feet above ground, 4 mile (USGS and others, 1964) 1974a, b, c, d, e, f) N East-West, 400 feet above ground,% mile (USGS, 1971a) C North-South, 1000 feet above ground,% mile (Joesting and 0 East-West, 500 feet above ground, 1 mile (USGS, 1979) others, 1949) P East-West, 500 feet above ground, 1 mile (USGS, 1974h) D North-South, 3000 feet barometric, 2 mile (USGS, 1969) Q East-West, 500 feet above ground, 1 mile (USGS, 1974j) E North-South, 500 feet above ground, % mile (Bromery and R East-West, 500 feet above ground, 1 mile (USGS, 1974i) Griscom, 1967) S East-West, 500 feet above ground, 1 mile (unpublished data) F North-South, 1000 feet above ground, %mile (Henderson and T East-West, 400 feet above ground,% mile (USGS, 1971 b) others, 1963) U East-West, 1200 feet barometric, 1 mile (USGS, 1974n) G North-South, 1000 feet barometric, 1 mile (USGS, 1974k) V East-West, 1200 feet barometric, 1 mile (USGS, 1974m) H North-South, 500 feet above ground, % mile (Henderson and W East-West, 1200 feet barometric, 1 mile (USGS, 19741) others, 1966) X East-West, 1200 feet barometric, 1 mile (USGS, 1973b) I North-South, 1000 feet above ground, 4 mile (unpublished data) Y East-West, 1000 feet barometric, 1 mile (Balsley and J East-West, 500 feet above ground, 1 mile (USGS, 1973a) others, 1946) K East-West, 500 feet above ground, 1 mile (USGS, 1974g)
12 SOURCES OF DATA Balsley, J. R., Walton, M. S., Rossman, D. L., and others, 1946, Mag ___ 1974a, Aeromagnetic map of parts of the Cleveland and Erie netic maps of Worcester County and part of Wicomico County, 1 o by 2° quadrangles, Pennsylvania: U.S. Geological Survey Maryland: U.S. Geological Survey Oil and Gas Investigations Map Open-File Report 74-12, scale 1:250,000. OM-46, scale 1:126,720. ___ 1974b, Aeromagnetic map of parts of the Harrisburg and Bromery, R. W., Petty, A. J., and Smith, C. W., 1964, Aeromagnetic Baltimore 1 o by 2° quadrangles, Pennsylvania: U.S. Geological map of Bel Air and vicinity, Harford, Baltimore, and Cecil Coun Survey Open-File Report 74-13, scale 1:250,000. ties, Maryland: U.S. Geological Survey Geophysical Investigations ___ 1974c, Aeromagnetic map of parts of the Pittsburgh and Map GP-482, scale 1:62,500. Cumberland 1 o by 2° quadrangles, Pennsylvania: U.S. Geological Bromery, R. W., and Griscom, A., 1967, Aeromagnetic and Survey Open-File Report 74-14, scale 1:250,000. generalized geologic map of southeastern Pennsylvania: U.S. ___ 1974d, Aeromagnetic map of parts of the Scranton and Geological Survey Geophysical Investigations Map GP-577, 2 Newark 1 o by 2° quadrangles, Pennsylvania: U.S. Geological Sur sheets, scale 1:125,000. vey Open-File Report 74-15, scale 1:250,000. Bromery, R. W., 1967, Aeromagnetic map of Baltimore County and ___ 1974e, Aeromagnetic map of parts of the Warren and Buffalo Baltimore City, Maryland: U.S. Geological Survey Geophysical In 1 o by 2° quadrangles, Pennsylvania: U.S. Geological Survey vestigations Map GP--613, scale 1:62,500. Open-File Report 74-16, scale 1:250,000. Henderson, J. R., Johnson, R. W., and Gilbert, F. P., 1963, ___ 1974f, Aeromagnetic map of parts of the Williamsport 1 o by Aeromagnetic map of the Wilmington, Delaware area and adja 2° quadrangle, Pennsysvania: U.S. Geological Survey Open-File cent parts of Pennsylvania and Maryland: U.S. Geological Survey Report 74-17, scale scale 1:250,000. G€ophysical Investigations Map GP-363, scale 1:62,500. ___ 1974g, Aeromagnetic map of Carroll County, Maryland: U.S. Henderson, J. R., Andreasen, G. E., and Petty, A. J., 1966, Geological Survey Open-File Report 74-205, scale 1:62,500. Aeromagnetic map of northern New Jersey and adjacent parts of ___ l974h, Aeromagnetic map of Frederick County, Maryland: New York and Pennsylvania: U.S. Geological Survey Geophysical U.S. Geological Survey Open-File Report 74-206, scale Investigations Map GP-562, scale 1:125,000. 1:62,500. Joesting, H. R., Keller, Fred, Jr., and King, E. R., 1949, Geologic im ___ 1974i, Aeromagnetic map of Howard County, Maryland: plications of aeromagnetic survey of Clearfield-Phillipsburg area, U.S. Geological Survey Open-File Report 74-207, scale Pennsylvania: American Association of Petroleum Geologists Bul 1:62,500. letin, v. 33, no. 10, p. 1747-66. ___ 1974j, Aeromagnetic map of Montgomery County, Mary Popenoe, Peter, Petty, A. J., and Tyson, N. S., 1964, Aeromagnetic land: U.S. Geological Survey Open-File Report 74-208, scale map of western Pennsylvania and parts of eastern Ohio, northern 1:62,500. West Virginia, and western Maryland: U.S. Geological Survey ___ 1974k, Aeromagnetic map of Philadelphia and vicinity, Geophysical Investigations Map GP-445, scale 1:250,000. Pennsylvania: U.S. Geological Survey Open-File Report 74-370, U.S. Geological Survey, 1969, Aeromagnetic map of the Harrisburg scale 1:62,500. Scranton area, northeastern Pennsylvania: U.S. Geological Sur ___ 19741, Aeromagnetic map of eastern Dorchester County, vey Geophysical Investigations Map GP-669, scale 1:250,000. Maryland and parts of adjacent counties: U.S. Geological Survey ___ 1971a, Aeromagnetic map of part of Cecil County, Maryland Geophysical Investigations Map'GP-898, scale 1:62,500. and parts of adjacent counties: U.S. Geological Survey Geophysi ___ 1974m, Aeromagnetic map of western Dorchester County, cal Investigations Map GP-755, scale 1:62,500. Maryland and parts of adjacent counties: U.S. Geological Survey ___ 1971b, Aeromagnetic map of part of Kent County, Maryland Geophysical Investigations Map GP-899, scale 1:62,500. and parts of adjacent counties in Maryland and Pennsylvania: ___ 1974n, Aeromagnetic map of southern Queen Annes U.S. Geological Survey Geophysical Investigations Map GP-756, County, Maryland and parts of adjacent counties: U.S. Geological scale 1:62,500. Survey Geophysical Investigations Map GP-900, scale 1:62,500. ___ 1973a, Aeromagnetic map of northern Frederick County, ___ 1979, Aeromagnetic map of parts of Delaware and New Jer Maryland and parts of adjacent counties in Maryland and Pennsyl sey: U.S. Geological Survey Open-File Report 79-1683, 2 sheets, vania: U.S. Geological Survey Open-File Report, scale 1:62,500. scale 1:250,000. ___ 1973b, Aeromagnetic map of southeastern Maryland: U.S. Geological Survey Open-File Report, 2 sheets, scale 1:62,500.
13 FLORIDA
86° 85° 82°
0 50 100 MILES I I I•'• 'Ill I I·, I I 0 50 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A East-West, 500feetaboveground, 1 mile (USGS, 1978c) Klitgord, K. D., and Behrendt, J. C., 1977, Aeromagnetic anomaly map B East-West,500feetmeanterrainclearance, 1 mile(USGS, 1978a) of the United States Atlantic continental margin: U.S. Geological C East-West, 500feet mean terrain clearance, 1 mile (USGS, 1978b) SurveyMapMF913, 2sheets, scale 1:1,000,000. D Southwest-Northeast, 1OOOfeetabove sea level, 5 nautical mile U.S. Geological Survey, 1978a, Aeromagnetic map of part of the (US NOO, 1972) Apalachicola 1 ox 2° quadrangle, Florida: U.S. Geological Survey E Northwest-Southeast, 450 meters above ground, 8 kilometers Open-File Report78-714, scale 1:250,000. (Kiitgord and Behrendt, 1977) ___ 1978b, Aeromagnetic map of north-central Florida: U.S. F East-West,500feetmeanterrainclearance, 1 mile(USGS, 1978d) Geological Survey Open-File Report 78-761, scale 1:250,000. ___ 1978c, Aeromagnetic map of northern Florida: U.S. Geological SurveyOpen-FileReport 78-891, 2sheets, scale 1:250,000. ___ 1978d, Aeromagnetic map of part of the Pensacola 1 o x 2° quadrangle, Florida: U.S. Geological Survey Open-File Report 78- 716, scale 1:250,000. U.S. Naval Oceanographic Office, 1972, Residual magnetic intensity contour chart-Gulf of Mexico, Caribbean Sea, North American Basin in Environmental-acoustic atlas of the Caribbean Sea and Gulf of Mexico, vol. II, marine environment: U.S. Naval Oceanographic OfficeSP-18911, 181 p.
14 GEORGIA
85° 84° 83° SOURCES OF DATA Petty, A. J., Petrafeso, F. A., and Moore, F. C., Jr., 1965, Aeromagnetic map of the Savannah River Plant area, South Carolina and Georgia: U.S. Geological Survey Geophysical Investigations Map GP-489, scale 1:250,000. Philbin, P. W., Petrafeso, F. A., and Long, C. L., 1964, Aeromagnetic map of the Georgia Nuclear Laboratory area, Georgia: U.S. Geologi cal Survey Geophysical Investigations Map GP-488, scale
1:250,000. I U.S. Geological Survey, 1973, Composite aeromagnetic map-north central Georgia: U.S. Geological Survey Open-File Report, scale 1:250,000. ___ 1976a, Aeromagnetic map of parts of Georgia, South Carolina, and North Carolina: U.S. Geological Survey Open-File Report 76- 181, scale 1:250,000. ___ 1976b, Aeromagnetic map of parts of the Brunswick and Savannah 1 o x 2° quadrangles, Georgia and South Carolina: U.S. GeologicaiSurvey0pen-FileReport76-155, scale 1:250,000. ___ 1977a, Aeromagnetic map of part of northern Georgia: U.S. Geological Survey Open -File Report 77-190, scale 1:250,000. ___ 1977b, Aeromagnetic map of parts of Rome, Atlanta, and Phenix City 1 o x 2o quadrangles, Georgia: U.S. Geological Survey Open -File Report 77-345, scale 1:250,000. ___ 1977c, Aeromagnetic map of part of southeastern Georgia: U.S. Geological Survey Open -File Report 77-96, scale 1:250,000. \______1978, Aeromagnetic map of northern Florida: U.S. Geological Survey0pen-FileReport78-891, 2sheets, scale 1:250,000. ----- ___ 1979a, Aeromagnetic map of northwest Georgia: U.S. Geolog ical Survey Open-File Report 79-1369, scale 1:250,000. ___ 1979b, Aeromagnetic map of southwest Georgia: U.S. Geolog
0 50 100 MILES ica1Survey0pen-FileReport79-756, 3sheets, scale 1:250,000. jhr,·~,r,·~·~\~~'~·~~~,,1~1 ___ 1979c, Aeromagnetic map of part of the Chattahoochee Na 0 50 100 150 KILOMETERS tional Forest, Georgia: U.S. Geological Survey Open-File Report 79-1371, scale 1:250,000.
SPECIFICATIONS A East-West,500feetaboveground,2mile(USGS, 1979c) B East-West,500feetaboveground,2mile(USGS, 1979a) C Northwest-Southeast,500feetaboveground, 1 mile(USGS, 1977a) D Northwest-Southeast,500feetaboveground, 1 mile(Philbin and others, 1964) E North-South,500feetaboveground, 1 mile(USGS, 1977b) F Northwest-Southeast,500feetaboveground, 1 mile(USGS, 1977a) G Northwest-Southeast,500feetaboveground, 1 mile(USGS, 1973) H Northwest-Southeast, 500feetaboveground, 1 mile(Petty and others, 1965) I Northwest-Southeast,500feetaboveground, 1 mile(USGS, 1979b J Northwest-Southeast,500feetaboveground, 1 mile(USGS, 1977c K Northwest-Southeast, 500feetaboveground, 1 mile (USGS, 1976a L East-West,500feetaboveground, 1 mile(USGS, 1976b) M East-West, 500feetaboveground, 1 mile (USGS, 1978)
15 IDAHO
0 50• 100 MILES I I 11 1 I 'I ' \ I•'• ' 1 I 8 0 50 100 150 KILOMETERS A-1 (
I I ___ [__ __ j_
SPECIFICATIONS A East-West, 7000feet barometric, 2 miles (A-1, USGS 1973a; A-2, USGS 1973c) 8 East-West, 7000 feet barometric, 1 mile (Kieinkopf and others, 19782). C Northern part North-South, 5000feet barometric, %-2 miles; Southern part East-West, 6000 feet barometric, %-2 miles (Kieinkopf and others, 1972) D East-West, 12,000 feet barometric, 2 miles (USGS, 1975) E North-South, 11 ,OOOfeet barometric, 1 mile (E-1, USGS 1972c; E-2, USGS, 1972d; E-3, Weis and others, 1972; E-4, Cater and others, 1973; E-5, unpublished data) F East-West, 9000 feet barometric, 1 and 2 miles (USGS, 1980) G East-West, 15,000 feet barometric, 5 miles (Zietz and others, 1971) H North-South, 11,000 feet barometric, 2 miles (USGS, 1972b) I East-West, 9000 feet barometric, 1 mile (Zietz and others, 1978) J North-South, 12,000 feet barometric, 1 mile (Kiilsgaard and others, 1970) K East-West, 11,000feetbarometric, 1 mile(K-1,USGS, 1971a;K-2, USGS, 1971b; K-3, USGS 1971c) L East-West, 12,500feet barometric, 5 miles (L-1, USGS, 1972a; L-2, USGS, 1971d) M East-West, 12,000 feet barometric, 1 mile (USGS, 1973b) N North-South, 12,000 feet barometric, 5 miles (Zietz and others, 1978) 0 Northeast-Southwest, 8000 feet barometric, 1 mile (Meuschke and Long, 1965) P East-West, 9000feet barometric, 1 mile (Mitchell and others, 1965) R North-South, 8000 feet barometric, 2 miles (USGS, 1974b) S North-South, 6000feet barometric,% mile (USGS, 1974a) T North-South, 12,000 feet barometric, 1 mile (Tschantz and others, 1974) U North~South, 1000feetaboveground, %mile(USGS, 1981)
16 SOURCES OF DATA Cater, F. W., and others, 1973, Mineral resources of the Idaho Primitive ___ 1972c, Aeromagnetic map of parts of the Hamilton and Elk City area and vicinity, Idaho, with a section on the Thunder Mountain dis 1 o x 2o quadrangles, Idaho-Montana: U.S. Geological Survey trict, by B. F. Leonard, and a section on Aeromagnetic interpretation, Geophysical Investigations Map GP-832, scale 1:250,000. byW. E. Davis: U.S. Geological Survey Bulletin 1304,431 p., 2 pis. ___ 1972d, Aeromagnetic map of part of the Challis 1 o x 2o quad Kiilsgaard, T. H., Freeman, V. L., and Coffman, J. S., 1970, Mineral re rangle, Idaho: U.S. Geological Survey Geophysical Investigations sources of the Sawtooth Primitive area, Idaho: U.S. Geological Sur MapGP--835, scale 1:250,000. vey Bulletin 1319-D, 174p., 2pls. ___ 1973a, Aeromagnetic map of parts of the Spokane and Wallace Kleinkopf, M.D., Harrison, J. E., and Zartman, R. E., 1972, Aeromagne 1 o x 2o quadrangles, Idaho: U.S. Geological Survey Open-File Re tic and geologic map of part of northwestern Montana and northern port, scale 1:250,000. Idaho: U.S. Geological Survey Geophysical Investigations Map GP- ___ 1973b, Aeromagnetic map of Yellowstone National Park and 830, scale 1:250,000. vicinity, Wyoming-Montana-Idaho U.S. Geological Survey Open Meuschke, J. L., and Long, C. L., 1965, Aeromagnetic map of part of the File Report, 4sheets, scale 1:125,000. Lanes Creek quadrangle, Caribou County, Idaho: U.S. Geological ___ 1973c, Aeromagnetic map of parts of the Okanogan and Survey Geophysical Investigations Map GP-490, scale 1:62,500. Sandpoint 1 o x 2° quadrangles, Washington-Idaho-Montana: U.S. Mitchell, C. M., Knowles, F. F., and Petrafeso, F. A., 1965, Aeromagnetic Geological Survey Open-File Report, scale 1:250,000. map of the Pocatello-Soda Springs area, Bannock and Caribou, ___ 1974a, Residual magnetic intensity map of the southern Raft Counties, Idaho: U.S. Geological Survey Geophysical lnvestiga River area, Cassia County, Idaho: U.S. Geological Survey Open-File tionsMapGP--521, scale 1:250,000. Report, scale 1:24,000. Tschantz, C. M., and others, 1974 Mineral resources of the eastern part ___ 1974b, Residual magnetic intensity map, Bruneau, Idaho: U.S. of the Sawtooth National Recreation area, Custer and Blaine Coun Geological Survey Open-File Report, scale 1:62,500. ties, Idaho, with a section on aeromagnetic survey and tentative in ___ 1975, Aeromagnetic map of southwestern Montana and east terpretation, by D. R. Mabey and C. M. Tschantz, and sections on central Idaho: U.S. Geological Survey Open-File Report 75-655, electromagnetic surveys, by F. C. Frischknecht: U.S. Geological Sur scale 1:250,000. vey Open-File Report, 2 vols., 648 p., 105 figs., 39 tables, 4 pis. ___ 1980, Aeromagnetic map of the Hell's Canyon area, Idaho and U.S. Geological Survey 1971a, Aeromagnetic map ofthe Custer, Eleven Oregon: U.S. Geological Survey Open-File Report 80-947, scale mile Creek, Sunbeam, Thompson Creek, and Clayton quadrangles, 1:125,000. east-central Idaho: U.S. Geological Survey Open-File Report, scale ___ 1981, Aeromagnetic map of the Jerry Peak area, Idaho: U.S. 1:62,500. Geological Survey Open-File Report 81-933, scale 1:62,500. ___ 1971b, AeromagneticmapoftheChallis, May, LonePine Peak, Weis, P. L., Schmitt, L. J., Jr., and Tuchek, E. T., 1972 Mineral resources and Doublespring quadrangles, east-central Idaho: U.S. Geological of the Salmon River Breaks Primitive area, Idaho, with a section on Survey Open-File Report, scale 1:62,500. aeromagnetic survey, by W. E. Davis: U.S. Geological Survey Bulle ___ 1971c, Aeromagnetic map of the Patterson and Leadore quad tin 1353-C, 91 p. 2 pis. rangles, east-central Idaho: U.S. Geological Survey Open-File Re Zietz, Isidore, and others 1971, Interpretation of an aeromagnetic strip port, scale 1:62,500. across the northwestern United States: Geological Society of Ameri ___ 1971d, Aeromagnetic map of southwestern Idaho: U.S. caBulletin, v. 82, no. 12, p. 3347-3371. Geological Survey Open-File Report, scale 1:500,000. Zietz, Isidore, Gilbert, F. P., and Kirby, J. R., 1978, Aeromagnetic map ___ 1972a, Aeromagnetic map of southeastern Idaho and part of of Idaho: color coded intensities: U.S. Geological Survey Geophysi southwestern Montana: U.S. Geological Survey Open-File Report, callnvestigationsMapGP-920, scale 1:1,000,000. scale 1:500,000. ___ 1972b, Aeromagnetic map of parts of the Baker and Challis 1 o x 2° quadrangles, Idaho: U.S. Geological Survey Open-File Report, scale 1:250,000.
17 ILLINOIS "- goo ago BSO ' \ NO DATA 4~~+------~--4------~--~ I A
~-- / ' 8 ( 4~·~----~------+------~~------+---~
' \ NO DATA
3g0'4r------+------~~------+---~,,--...., ' J
/ ) I I c D I I \ / " 38°~..,.______-+------,+
..I \ }
50 100 MILES ~~~·.~,-~~~~~~--~~~~----~l~jI 50 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A East-West, 500 feet above ground, 1 mile (Beck, 1965) Beck, M. E., Jr., 1965, Aeromagnetic map of northeastern Illinois and 8 East-West, 6000 feet above sea level, 5 mile (Zietz its geologic interpretation: U.S. Geological Survey Geophysical and others, 1966) Investigations Map GP-523, with 6 p. text, scale 1:250,000. C North-South, 3000 feet above mean sea level, 1 mile (Heigold, Heigold, P. C., 1976, An aeromagnetic survey of southwestern Illinois: 1976) Illinois State Geological Survey, Circular 495, 28 p., 1 pl., 11 D North-South, 1000 feet above mean terrain, 1 mile (Johnson figs., 2 tables. and others, 1980) Johnson, R. W., and others, 1980, Aeromagnetic map of the east-cen E East-West, 400 feet above ground, 6 mile (Texas Instruments, tral midcontinent of the United States-Washington: Division of 1980) Reactor Safety Research, Office of Nuclear Regulatory Research, United States Nuclear Regulatory Commission: Springfield, Va., 12 p., 1 pl. scale 1:250,000. Texas Instruments, Inc., 1980, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey of portions of Arkansas, Illinois, Indiana, Kentucky, Missouri, and Tennessee; Paducah quadrangle-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 41-.SO, v. 2, n.p., scale 1:500,000. Zietz, Isidore, and others, 1966, Crustal study of a continental strip from the Atlantic ocean to the Rocky Mountains: Geological Soci ety of America Bulletin, v. 77, no. 12, p. 1427-1448, 2 pis.
18 INDIANA;· IOWA
87" 86° as· SPECIFICATIONS North-South, 1000 feet above ground, 1 mile (Richardson, 1978) I I 41°'--t---1----1-----+-+-
SOURCES OF DATA Richardson, N. R., Jr., 1978, Total magnetic intensity map of Indiana: Pur due University, Department of Geosciences, scale 1:500,000.
SPECIFICATIONS The flight elevation of all surveys was 1000 feet above ground, except for area F which was 2000 feet above sea level. The flight direction and spacing for all the surveys was east-west and one sso ss· 94• 93° 92" mile, respectively. Data used to compile this map were pub ,- -- -- lished by the U.S. Geological Survey, A (Henderson and Vargo, < \ 1965), and by the Iowa Geological Survey, 8 (1965), C (1968), D (1969), E (1970), and F (1973).
SOURCES OF DATA
D / Henderson, J. R., and Vargo, J. L., 1965, Aeromagnetic map of cen tral Iowa: U.S. Geological Survey Geophysical Investigations Map GP-476, scale 1:316,800. E Iowa Geological Survey, 1965, Preliminary interpretation report, air borne magnetometer survey of northwestern Iowa: Iowa Geologi I cal Survey, scale 1:500,000. F ___ 1968, Preliminary interpretation report, airborne magneto '~ meter survey of northeastern Iowa: Iowa Geological Survey, scale " 1:500,000. 0 50 100 MILES I I I I ___ 1969, Preliminary interpretation report, airborne magneto I 111111 I 0 50 1tlo 1~0 KILOMETERS meter survey of east-central Iowa: Iowa Geological Survey, scale 1:500,000. ___ 1970, Preliminary interpretation report, airborne magneto meter survey of southeastern Iowa: Iowa Geological Survey, scale 1:500,000. ___ 1973, Preliminary interpretation report, airborne magneto meter survey of southern Iowa: Iowa Geological Survey, scale 1:500,000.
19 KANSAS, KENTUCKY
102" 101° 1000 9Bo 97° 96° 95° 41f. 99"
SPECIFICATIONS I All lines flown in an East-West direction at 2 mile spacing with I 39" elevations as shown below. A 4500 feet above sea level (Yarger and others, 1980) B 3000 feet above sea level (Yarger and others, 1980) A B c C 2500 feet above sea level (Yarger and others, 1980)
3Bo SOURCES OF DATA Yarger, H., Robertson, R., Martin , J,. Ng, K., Sooby, R., and Went land, R., 1980, Aeromagnetic map of Kansas: Kansas Geological Survey Open-File Map, scale 1:500,000. 37° _L
0 50 100 MILES I I•'• :,•1 I I 'I I I 0 50 100 150 KILOMETERS
63° ,,_ ) SPECIFICATIONS ' ' East-West, 1000 feet constant barometric altitude, 1 mile (Johnson and others, 1978) \ SOURCES OF DATA ' / Johnson, R. W., Jr., Haygood, C., and Kunselman, P. M., 1978, Re "' sidual total-intensity aeromagnetic map of Kentucky: Kentucky 37° Geological Survey 3 sheets, scale 1:250,000. ""'
0 50 100 MILES I I I •'• /,'1 I I 'I I I 0 50 100 150 KILOMETERS
20 LOUISIANA
SOURCES OF DATA 93° 92" EG&G GeoMetries, Inc., 1980a, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey, Nebraska Texas project, Tyler, Texarkana, and Waco quadrangles of Texas, Oklahoma, Arkansas, and Louisiana-Final Report: U.S. Depart ment of Energy Grand Junction Office [Report] GJBX 69-80, v. 2, n.p., scale 1:500,000. ___ 1980b, National Uranium Resource Evaluation aerial gamma ray and magnetic reconnaissance survey, Shreveport quadrangle, l Louisiana-Final Report: U.S. Department of Energy Grand '\ E J/ Junction Office [Report] GJBX 151-80, v. 2, n.p., scale 1:500,000. ) ~ ,) ___ 1980c, National Uranium Resource Evaluation aerial gamma 91° 90" ray and magnetic reconnaissance survey, Alexandria quadrangle, 31°'--l----il------+-""""-• Louisiana and Texas-Final Report: U.S. Department of Energy ( I Grand Junction Office [Report] GJBX 152-80, v. 2, n.p., scale 1:500,000. F K ___ 1980d, National Uranium Resource Evaluation aerial gamma f ray and magnetic reconnaissance survey, Jackson quadrangle, Louisiana and Mississippi-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 153-80, v. 2, n.p., scale 1:500,000. ___ 1980e, National Uranium Resource Evaluation aerial gamma ray and magnetic reconnaissance survey, Natchez quadrangle, Mis sissippi and Louisiana-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 180-80, v. 2, n.p., scale 1:500,000. 50 100 MILES ___ 1980f, National Uranium Resource Evaluation aerial gamma 50 100 150 KILOMETERS ray and magnetic reconnaissance survey, El Dorado quadrangle, Louisiana and Arkansas-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 182-80, v. 2, n.p., scale 1:500,000. ___ 1980g, National Uranium Resource Evaluation aerial gamma SPECIFICATIONS ray and magnetic reconnaissance survey, Greenwood quadrangle, A East-West,400feetaboveground,3mile (EG&G GeoMetries, Mississippi, Arkansas, and Louisiana-Final Report: U.S. Depart 1980a) ment of Energy Grand Junction Office [Report] GJBX 183-80, v. 2, B East-West, 400feet above ground, 3 mile (Texas Instruments, n.p., scale 1:500,000. 1980) ___ 1980h, National Uranium Resource Evaluation aerial gamma C East-West,400feetaboveground,6mile (EG&G GeoMetries, ray and magnetic reconnaissance survey, Baton Rouge quadrangle, 1980f) Louisiana and Mississippi-Final Report: U.S. Department of Energy D East-West,400feet above ground, Smile (EG&G GeoMetries, Grand Junction Office [Report] GJBX 221-80, v. 2, n.p., scale 1980b) 1:500,000. E East-West,400feetabove ground,6 mile (EG&G GeoMetries, ___ 1980i, National Uranium Resource Evaluation aerial gamma 1980c) ray and magnetic reconnaissance survey, Mobile quadrangle, F East-West,400feetaboveground,6mile (EG&G GeoMetries, Louisiana, Mississippi, and Alabama-Final Report: U.S. Depart 1980j) ment of Energy Grand Junction Office [Report] GJBX 222-80, v. 2, G Specifications unknown (unpublished data) n.p., scale 1:500,000. H East-West,400feetaboveground,6 mile (EG&G GeoMetries, ___ 1980j, National Uranium Resource Evaluation aerial gamma 1980g) ray and magnetic reconnaissance survey of Lake Charles and Port I East-West,400feetabove ground, 6 mile (EG&G GeoMetries, Arthur quadrangles, Texas and Louisiana-Final Report: U.S. De 1980d) partment of Energy Grand Junction Office [Report] GJBX 224-80, J East-West, 400feet above ground, 6 mile (EG&G GeoMetries, v. 2, n.p., scale 1:500,000. 1980e) Texas Instruments, Inc., 1980, National Uranium Resource Evaluation K East-West,400feetabove ground, Smile (EG&G GeoMetries, aerial gamma-ray and magnetic reconnaissance survey of portions 1980h) of Texas [Palestine quadrangle]-Final Report: U.S. Department of L East-West, 400feetabove ground, 6 mile (EG&G GeoMetries, Energy Grand Junction Office [Report] GJBX 45-80, v. 2, n. p., scale 1980i) 1:500,000.
21 MAINE Q Northwest-Southeast, 500feet above ground, V4tO% mile 69" (Zietz and others, 1972) R North-South, 500feetabove ground,% mile (Zietz and /' others, 1972) S Northwest-Southeast, 500feetabove ground,% mile (Zietz and others, 1972) T Northwest-Southeast, 2500feet barometric, 5 mile (Zietz and others, 1972) U East-West,500feetaboveground, %mile(Zietzand others, 1972) V East-West,400feetaboveground, %mile(Zietzand others, 1972) W Northwest-Southeast, 2500feet barometric, 6 mile (Zietz and others, 1972) X East-West, 750feelaboveground, %mile(Zietzand others, 1972) Y Northwest-Southeast, 150 meters above sea level, 8 kilometers (Taylor and others, 1968)
SOURCES OF DATA Taylor, P. T., Zietz, Isidore, and Dennis, L. S., 1968, Geologic implica tions of aeromagnetic data from the eastern continental margin of the United States: Geophysics, v. 33, no. 5, p. 755-780. Zietz, Isidore, Gilbert, F. P., and Kirby, J. R., Jr., 1972, Northeastern I United States aeromagnetic maps: U.S. Geological Survey Open I 44°'-t-----t:-----+-----/- File Report, 13 sheets, scale 1:250,000.
50 100 MILES ~~~~-L-L~~_J~~ 50 100 150 KILOMETERS
'\
SPECIFICATIONS A Northwest-Southeast, 2500feet barometric, 10 mile (Zietz and others, 1972) B North-South, 2500feet barometric, 2to 6 mile (Zietz and others, 1972) C East-West,500feetaboveground, %mile(Zietzand others, 1972) D East-West, 500feetabove ground,% mile (Zietz and others, 1972) E North-South, 500feetabove ground,% mile (Zietz and others, 1972) F North-South, 3500feet barometric,% mile (Zietz and others, 1972) G Northwest-Southeast, 500feet above ground,% mile (Zietz and others, 1972) H North-South, 500feet above ground,% mi·le (Zietz and others, 1972) I East-West, 500feetabove ground,% mile (Zietz and others, 1972) J East-West, 1OOOfeetabove ground, 2 mile (Zietz and others, 1972) K North-South, 750feet above ground,% mile (Zietz and others, 1972) L North-South, 500feet above ground,% mile (Zietz and others, 1972) M East-West, 500feetabove ground,% mile (Zietz and others, 1972) N North-South,500feetaboveground, %mile(Zietzand others, 1972) 0 North-South, 500feet above ground,% mile (Zietz and others, 1972) P Northwest-Southeast, 2500feet barometric, 5 mile (Zietz and others, 1972)
22 MICHIGAN BB"
0 50 100 MILES I I I I I 11'1 I'll I I 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A North-South and East-West, 500feetaboveground, Hinze, W. J., O'Hara, N. W., Trow, J. W., and Secor, G. B., 1966, 0.25-3 mile (Zietz and Kirby, 1971) Aeromagnetic studies of eastern Lake Superior, in Steinhart, J. S., 8 North-South, 500feet above ground, 0.5 mile (USGS, 1970) and Smith, T. J., editors, The earth beneath the continents: Ameri C North-South, 3000feetbarometric, 3 mile (Hinze and others, can Geophysical Union Geophysical Monograph 10, p. 95-110, 8 1971) figs., 1 pl. D North-South, 3000feet barometric, 6 mile (Wold and Ostenso, Hinze, W. J., Kellogg, R. L., and Merritt, D. W., 1971, Gravity and 1966) aeromagnetic anomaly maps of the southern peninsula of Michigan: E Northeast-Southwest, 3000feet barometric, 6 mile (Hinze and Michigan Department of Natural Resources Geological Survey Divi others, 1966) sion Report of Investigation 14, 15 p., 2 pls., 5 figs. F Northwest-Southeast (southern half) Northeast-Southwest 0' Hara, N. W., and Hinze, W. J., Michigan State University, written com (northern half), 3000feet barometric, 6 mile (O'Hara and . munication, 1966. Hinze, 1966) U.S. Geological Survey, 1970, Aeromagnetic map of the Menominee Northland area, Dickinson, Marquette, and Menominee Counties, Michigan, and Marinette County, Wisconsin: U.S. Geological Sur vey Geophysical Investigations Map GP-711, 2 sheets, scale 1:62,500. Wold, R. J., and Ostenso, N. A., 1966, Aeromagnetic, gravity, and sub bottom profiling studies in western Lake Superior, in Steinhart, J. S., and Smith, T. J., editors, The earth beneath the continents: Ameri can Geophysical Union Geophysical Monograph 10, p. 66-94, 33 figs. Zietz, Isidore, and Kirby, J. R., 1971, Aeromagnetic map ofthe western part of the northern peninsula, Michigan, and part of northern Wis consin: U.S. Geological Survey Geophysical Investigations Map GP-750, scale 1:250,000.
23 MINNESOTA 95°
97° 49°- I 94° 93° ' \__,' ~ 92o I I 48° A B
47°
I I \H I J 46°
\ ..... I N 0 45° '
p Q 44° I \ I I L - __..J
0 50 100 MILES I I I I,·,,. •'I I I I I 0 50 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A North-South,500feetaboveground, 1 mile (Bath and Bath, G. D., Schwartz, G. M., and Gilbert, F. P., 1964a, Aeromagnetic others,1964b) and geologic map of east-central Minnesota: U.S. Geological Survey B North-South, 1OOOfeetabove ground, 1 mile (Bath and Geophysical Investigations Map GP-47 4, scale 1:250,000. others, 1964b) ___ 1964b, Aeromagnetic and geologic map of northwestern Min C North-South, 1OOOfeetabove ground, 1 mile (Bath and nesota: U.S. Geological Survey Geophysical Investigations Map others, 1965a) GP-471, scale 1:250,000. D North-South, 1000feetaboveground, 1 mile(USGS, 1968b) ___ 1965a, Aeromagnetic and geologic map of northeastern-Min E North-South, 500feetaboveground, 0.5to 1 mile (Bath nesota: U.S. Geological Survey Geophysical Investigations Map and others, 1965a) GP-472, scale 1:250,000. F North-South, 1OOOfeetabove ground, 1 mile (USGS, 1969) ___ 1965b, Aeromagnetic and geologic map of west-central Min G East-West, 1000feetaboveground, 1 mile (Bath and nesota: U.S. Geological Survey Geophysical Investigations Map others, 1965a) GP-473, scale 1:250,000. H North-South, 500feetabove ground, 1 mile (Bath and Philbin, P. W., and Gilbert, F. P., 1966a, Aeromagnetic map of southeast others, 1965b) ern Minnesota: U.S. Geological Survey Geophysical Investigations I North-South, 1 OOOfeetabove ground, 1 mile (Bath and Map GP-559, scale 1:250,000. others, 1965b) ____ 1966b, Aeromagnetic map of southwestern Minnesota: U.S. J North-South, 1000feetaboveground, 1 mile(Bathand Geological Survey Geophysical Investigations Map GP-560, scale others, 1964a) 1:250,000. K East-West, 1000feet above ground, 1 mile (Bath and Sims, P. K., and Zietz, Isidore, 1967, Aeromagnetic and inferred Pre others, 1964a) cambrian paleogeologic map of east-central Minnesota and part of L North-South, 1000feetabove ground,2to4 mile (Bath Wisconsin: U.S. Geological Survey Geophysical Investigations Map and others, 1964a) GP-563, 6p. text, scale 1:250,000. M East-West, 1000feetbarometric, 1 mile(USGS, 1968a) U.S. Geological Survey, 1968a, Aeromagnetic map of central Pine N East-West,1000feetaboveground, 1 mile(USGS,1970) County, Minnesota and adjacent parts of Wisconsin: U.S. Geological 0 East-West,500feetaboveground, 1 mile(Simsand Survey Geophysical Investigations Map GP-636, scale 1:62,500. Zietz, 1967) ___ 1968b, Aeromagnetic map of the Kabetogama Lake-Grassy P East-West, 1OOOfeetaboveground, 1 mile (Philbin and Lake area, St. "Louis County, Minnesota: U.S. Geological Survey Gilbert, 1966b) Geophysical InvestigationsMapGP-616, scale 1:250,000. Q East-West, 1 OOOfeetabove ground, 1 mile (Philbin and ___ 1969, Aeromagnetic map of the McNair-Grand Portage area, Gilbert, 1966a) northeastern Minnesota: U.S. Geological Survey Geophysical Inves tigationsMapGP-639, scale 1:250,000. ___ 1970, Aeromagnetic map of a part of western Minnesota: U.S. Geological Survey Geophysical Investigations Map GP-692, scale 1:250,000.
24 MISSISSIPPI 9(Y' 89" ~l!i"--r------!------I SOURCES OF DATA ,1 " EG&G GeoMetries, 1980a, National Uranium Resource Evaluation ae I rial gamma-ray and magnetic reconnaissance survey, Jackson quad ~· rangle, Louisiana and Mississippi -Final Report: U.S. Department of I A E / I Energy Grand Junction Office [Report] GJBX 153-80, v. 2, n.p., I scale 1:500,000. 91' .J" I ___ 198Gb, National Uranium Resource Evaluation aerial gamma 15, I ray and magnetic reconnaissance survey, Meridian quadrangle, Mis \ I sissippi and Alabama-Final Report: U.S. Department of Energy I Grand Junction Office [Report] GJBX 154-80, v. 2, n.p., scale ,d 1:500,000. ,,..>- I ___ 1980c, National Uranium Resource Evaluation aerial gamma B F I ray and magnetic reconnaissance survey, Hattiesburg quadrangle, (/) I Mississippi, Alabama, and Louisiana-Final Report: U.S. Depart I ment of Energy Grand Junction Office [Report] GJBX 155-80, v. 2, (j n.p., scale 1:500,000. 33° I - ) ! I ___ 1980d, National Uranium Resource Evaluation aerial gamma ray and magnetic reconnaissance survey, Natchez quadrangle, Mis ~~ I sissippi, and Louisiana-Final Report: U.S. Department of Energy L J! I Grand Junction Office [Report] GJBX 180-80,· v. 2, n.p., scale c G I 1:500,000. ~j') ___ 1980e, National Uranium Resource Evaluation aerial gamma r I ray and magnetic reconnaissance survey, West Point quadrangle, I I Mississippi, and Alabama-Final Report: U.S. Department of Energy 32 ,_[I / i Grand Junction Office [Report] GJBX 181-80, v. 2, n.p., scale I 1:500,000. I ___ 1980f, National Uranium Resource Evaluation aerial gamma I ray and magnetic reconnaissance survey, Greenwood quadrangle, D H Mississippi, Arkansas, and Louisiana-Final Report: U.S. Depart \ ment of Energy Grand Junction Office [Report] GJBX 183-80, v. 2, I I n.p., scale 1:500,000.
\ l ___ 1980g, National Uranium Resource Evaluation aerial gamma 31"---_j ______\ I ray and magnetic reconnaissance survey, Helena quadrangle, Ar I I kansas, Mississippi, and Tennessee-Final Report: U.S. Department I I of Energy Grand Junction Office [Report] GJBX 201-80, v. 2, n.p., ( I scale 1:500,000. \ ___ 1980h, National Uranium Resource Evaluation aerial gamma ' ' ray and magnetic reconnaissance survey, Tupelo quadrangle, Mis sissippi, Alabama, and Tennessee-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 203-80, v. 2, n.p., scale 1:500,000. ___ 1980i, National Uranium Resource Evaluation aerial gamma SO 100 MILES ray and magnetic reconnaissance survey, Mobile quadrangle, Louisiana, Mississippi, and Alabama-Final Report: U.S. Depart 50 100 150 KILOMETERS ment of Energy Grand Junction Office [Report] GJBX 222-80, v. 2, n.p., scale 1:500,000.
SPECIFICATIONS All lines flown East-West, 400 feet above ground, with six-mile spacing. A (EG&G GeoMetries, 1980g) B (EG&G GeoMetries, 1980f) C (EG&G GeoMetries, 1980a) D (EG&G GeoMetries, 1980d) E (EG&G GeoMetries, 1980h) F (EG&G GeoMetries, 1980e) G (EG&G GeoMetries, 1980b) H (EG&G GeoMetries, 1980c) I (EG&G GeoMetries, 1980i)
25 MISSOURI 95° 94° 93° 92" ~ --r------1------'I \ \ A I 4~- l
\...... , I ~ H I \ B ' \ '\ '<91° \ ' ' ~} I ) I ,,--...... , I J ,.--- I J I p I c K ) l - I I Q I - r-- I AA I L M 38° I ~-""~· ~ w v FF ) , .... N uj z I I ~ I D T X \ I F ' R BB r-- GG H y """ ) t \ \ IEI J cc DD HHI 37°_1_ \.S' I F I EE ~ 0 ,~ s II J LI ___G ------1------~ v/"' \. I ,.'
0 50 100 MILES '/s/. _21~ 0 50 100 150 KILOMETERS 36"--r-
SPECIFICATIONS A East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, S East-West, 400 feet above ground, 3 mile (Texas 1980e) Instruments, 1980b) B East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, T North-South, 1800feetbarometric, %mile(Dempseyand 1980c) Duffner, 1949) C East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, U North-South, 1800 feet barometric,% mile (Dempsey and 1980b) others, 1950a) D East-West, 400 feet above ground, 3 mile (Texas Instruments, V North-South, 1800 feet barometric,% mile (Dempsey and 1978) others, 1950b) E North-South, 1000 feet above ground,% mile (Keller and W North-South, 1800 feet barometric, V4 mile (Dempsey and Henderson, 1963) Meuschke, 1951a) F North-South, 2000 feet above sea level,% mile (Missouri X North-South, 1800 feet barometric, V4 mile (Dempsey and Geological Survey, 1968a) Meuschke, 1951b) G East-West, 400 feet above ground, 3 mile (Texas Instruments, Y North-South, 1800feet barometric,% mile (Dempsey and 1978) Meuschke, 1951c) H Vertical intensity data, 1 and 2 mile intervals (Missouri Z North-South, 1800feet barometric,% mile (Dempsey and Geological Survey, 1943) Meuschke, 1951d) I North-South, 1500 feet above sea level,% mile (Missouri AA North-South, 1800feet barometric,% mile (Dempsey and Geological Survey, 1970) Meuschke, 1951e) J East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, BB North-South, 1500 feet above sea level,% mile 1980d) Missouri Geological Survey, 1961b) K North-South, 1500 feet above sea level,% mile (Missouri CC North-South, 1500 feet above sea level,% mile Geological Survey, 1969) (Missouri Geological Survey, 1968d) L North-South, 1500 feet above sea level,% mile (Missouri DD North-South, 500 feet above ground,% mile (Missouri Geological Survey, 1963a) Geological Survey, 1968b) M North-South, 1500 feet barometric,% mile (Missouri EE North-South, 400 feet above ground, 1 mile (Missouri Geological Survey, 1965) Geological Survey, 1963b) N North-South, 1700 feet above sea level,% mile (Missouri FF East-West, 1000feetaboveground, 1 mile(Johnsonand Geological Survey, 1962) others, 1980) 0 East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, GG East-West, 400 feet above ground, 6 mile (Texas 1980a) Instruments, 1980a) P North-South, 1500 feet above sea level,% mile (Missouri HH North-South, 1000 feet above sea level,% mile Geological Survey, 1961a) (Missouri Geological Survey, 1963c) Q North-South, 500 feet above ground, 1 mile (Missouri II East-West, 1500 feet constant barometric altitude, 1 mile Geological Survey, 1968c) (USGS, 1974) R North-South, 1800feetbarometric, %mile(USGS, 1979)
26 SOURCES OF DATA Dempsey, W. J., and Duffner, R. T., 1949, Total intensity aeromagnetic maps Missouri Division of Geological Survey and Water Resources, 1961a, Total in of [Missouri]: U.S. Geological Survey Geophysical Investigations Maps tensity aeromagnetic maps, Augusta, Bland, Hermann, Linn, Meta, (no numbers), 8 sheets, scale 1:31,680 (Coldwater, DeSoto, Des Arc, Mokane, Morrison, Redbird, St. Clair, Tavern, Union, Vienna, and Farmington and part of Crystal City, Fredericktown, Ironton, Richwoods Washington quadrangles: (Rolla, Missouri), 13 sheets, scale 1:62,500. and St. Clair quadrangles). ____ 1961b, Total intensity aeromagnetic maps, Boss, Corridon, Dempsey, W. J., Duffner, R. T., Keller, Fred, Jr., and Henderson, J. R., Jr., Edgehill, and Lesterville quadrangles: (Rolla, Missouri), 4 sheets, 1950a, Total intensity aeromagnetic map of Bonne Terre quadrangle, scale 1:62,500. Missouri: U.S. Geological Survey Geophysical Investigations Map GP- ____ 1962, Total intensity aeromagnetic maps, Ash Grove, Fairplay, 14, scale 1:31,680. Greenfield, Hermitage, Macks Creek, Stockton, Stockton 1, ____ 1950b, Total intensity aeromagnetic map of Potosi quadrangle, Stockton 2, Stoutland, and Urbana quadrangles: (Rolla, Missouri), Missouri: U.S. Geological Survey Geophysical Investigations Map 10sheets, scale 1:62,500. GP-13, scale 1:31,680. ___ 1963a, Total intensity aeromagnetic maps, Butler 4, Clinton 3, Dempsey, W. J., and Meuschke, J. L., 1951a, Total intensity aeromagne Clinton 4, and Fristoe quadrangles: (Rolla, Missouri), 4 sheets, scale tic map of Berryman quadrangle, Missouri: U.S. Geological Survey 1:62,500. Geophysical Investigations Map GP-77, scale 1:31,680. ____ 1963b, Total intensity aeromagnetic map of Carter County, ____ 1951b, Total intensity aeromagnetic map of part of Higdon (Rolla, Missouri), scale 1:62,500. quadrangle, Missouri: U.S. Geological Survey Geophysicallnvesti ____ 1963c, Total intensity aeromagnetic map, Advance quad gationsMapGP-80, scale 1:31,680. rangle: (Rolla, Missouri), scale 1:62,500. ____ 1951c, Total intensity aeromagnetic map of part of Marquand ____ 1965, Total intensity aeromagnetic maps, Eugene, Iberia, Linn quadrangle, Missouri: U.S. Geological Survey Geophysicallnvesti Creek, Little Niangua, Richland, Tavern, and Warsaw quadrangles: gationsMapGP-79, scale 1:31,680. (Rolla, Missouri), 7 sheets, scale 1:62,500. ____ 1951d, Total intensity aeromagnetic map of part of Weingarten ____ 1968a, Total intensity aeromagnetic maps, Joplin East, Neo quadrangle, Missouri: U.S. Geological Survey Geophysical Investi sho, Ritchey, Sarcoxie, Seneca, Bolivar, Buffalo, Morrisville, and gationsMapGP-81, scale 1:31,680. Strafford quadrangles: (Rolla, Missouri), 9sheets, scale 1:62,500. ____ 1951e, Total intensity aeromagnetic map of Sullivan quad ___ 1968b, Total intensity aeromagnetic maps, Ellington, Green rangle and part of Union quadrangle, Missouri: U.S. Geological Sur ville, Piedmont, and Zalma quadrangles: (Rolla, Missouri), 4 sheets, vey Geophysical Investigations Map GP-78, scale 1:31,680. scale 1:62,500. ____ 1980a, National Uranium Resource Evaluation aerial gamma ____ 1968c, Total intensity aeromagnetic map, Gerald quadrangle: ray and magnetic reconnaissance survey, Harrison quadrangle, Mis (Rolla, Missouri), scale 1:62,500. souri and Arkansas-Final Report: U.S. Department of Energy ___ 1968d, Total intensity aeromagnetic map, Cardavera quad Grand Junction Office [Report] GJBX 150-80, v. 2, n.p., scale rangle: (Rolla, Missouri), scale 1:62,500. 1:500,000. ___ 1969, Total intensity aeromagnetic maps, Eldon, Gravois Mills, ____ 1980b, National Uranium Resource Evaluation aerial gamma Green Ridge, Lincoln, Nelson, Pilot Grove, Smithton, Tipton, and ray and magnetic reconnaissance survey, Lawrence quadrangle, Warsaw I quadrangles: (Rolla, Missouri), 9sheets, scale 1:62,500. Kansas and Missouri -Final Report: U.S. Department of Energy ___ 1970, Total intensity aeromagnetic maps, Boonville, Califor Grand Junction Office [Report] GJBX 239-80, v. 2, n.p., scale nia, Fayette, Glasgow, Glasgow 2, Huntsville, Marshall, and Mar 1:500,000. shall1 quadrangles: (Rolla, Missouri), 8sheets, scale 1:62,500. ____ 1980c, National Uranium Resource Evaluation aerial gamma Texas Instruments, Inc., 1978, National Uranium Resource Evaluation ray and magnetic reconnaissance survey, Kansas City quadrangle, aerial gamma-ray and magnetic reconnaissance survey of the Great Kansas and Missouri-Final Report: U.S. Department of Energy Plains and Central Lowlands (Joplin quadrangle, v. 2-L, and Tulsa Grand Junction Office [Report] GJBX 259-80, v. 2, n.p., scale quadrangle, v. 2-N)-Final Report: U.S. Department of Energy 1:500,000. Grand Junction Office [Report] GJBX 100-78, v. 2, n.p., scale ____ 1980d, National Uranium Resource Evaluation aerial gamma 1:500,000. ray and magnetic reconnaissance survey, Jefferson City quadrangle, ____ 1980a, National Uranium Resource Evaluation aerial gamma Missouri -Final Report: U.S. Department of Energy Grand Junction ray and magnetic reconnaissance survey of portions of Arkansas, Il Office [Report] GJBX260-80, v. 2, n.p., scale 1:500,000. linois, Indiana, Kentucky, Missouri and Tennessee: Paducah quad ____ 1980e, National Uranium Resource Evaluation aerial gamma rangle-Final Report: U.S. Department of Energy Grand Junction ray and magnetic reconnaissance survey, Nebraska City quad Office [Report] GJBX41-80, v. 2, n.p., scale 1:500,000. rangle, Missouri, Iowa, Nebraska, and Kansas-Final Report: U.S. ____ 1980b, National Uranium Resource Evaluation aerial gamma Department of Energy Grand Junction Office [Report] GJBX 261- ray and magnetic reconnaissance survey of portions of Arkansas, Il 80, v. 2, n.p., scale 1:500,000. linois, Indiana, Kentucky, Missouri and Tennessee: Poplar Bluff Johnson, R. W., and others, 1980, Aeromagnetic map of the east-central quadrangle- Final Report: U.S. Department of Energy Grand Junc midcontinent of the United States-Washington: Division of Reactor tion Office [Report] GJBX42-80, v. 2, n.p., scale 1:500,000. Safety Research, Office of Nuclear Regulatory Research, United U.S. Geological Survey, 1974a, Aeromagnetic map of the New Madrid States Nuclear Regulatory Commission: Springfield, Va., scale region, Missouri, Kentucky, Arkansas, and Tennessee: U.S. Geolog 1:250,000. ical Survey Open-File Report74-360, scale 1:125,000. Keller, Fred Jr., and Henderson, J. R., 1963, Aeromagnetic map of part ___ 1979, Aeromagnetic map of the Rolla, Missouri area: U.S. of the Tri-State mining district, Kansas, Missouri, and Oklahoma: Geological Survey Open-File Report 79-966, scale 1:250,000. U.S. Geological Survey Geophysical Investigations Map GP-427, scale 1:125,000. Missouri Geological Survey and Water Resources, 1943, Magnetic map of Missouri showing anomalies of vertical intensity: (Rolla, Missouri), scale 1:500,000 (reprinted in 1958).
27 MONTANA
115° 105° 104° 110" 109" 108° 107°---- 106", ___ _ A
R T w
48° \ ( v u < s \ u v "'47° NO DATA J
X
\ M 0 p 45°'
'-- , I N 0 50 100 MILES - -.J' 'I I 'j I I I J I•'• ,'I 'j I 0 50 100 150 KILOMETERS
SPECIFICATIONS A East-West, 7000 feet barometric, 2 mile (USGS, 1973b) N East-West, 12,500 feet barometric, 5 mile (USGS, 1972b) 8 East-West, 7000 feet barometric, 2 mile (USGS, 1973a) 0 East-West, 12,000 feet barometric, 1 mile (USGS, 1973c) C East-West, 11,000 feet barometric, 2 mile (USGS, 1973a) P East-West, 12,000 feet above sea level, 2 mile (USGS, D East-West, 7000 feet barometric, 1 mile (Kieinkopf and 1975a) others, 1972) Q East-West, 400 feet above ground, 6 mile (Texas E East-West, 9000 feet barometric, 1 mile (Kieinkopf and Instruments, Inc., 1979) Mudge, 1972) R East-West, 400 feet above ground, 3 mile (Texas F East-West, 9000 feet barometric, 2 mile (USGS, 1969) Instruments, Inc., 1979) G Northeast-Southwest, 9000 feet barometric, 2 mile S East-West, 400 feet above ground, 3 mile (Texas Kleinkopf and Mudge, 1972) Instruments, Inc., 1979) H North-South, 7500 feet barometric, 1 mile (Douglas, T East-West, 400 feet above ground, 3 mile (Texas 1971) Instruments, Inc., 1979) I North-South, 11,000 feet barometric, 1 mile (USGS, 1972a) U East-West, 400 feet above ground, 3 mile (Texas J East-West, 15,000 feet barometric, 5 mile (Zietz and Instruments, Inc., 1979) others, 1971) V East-West, 400 feet above ground, 6 mile (Texas K East-West, 10,500 feet barometric, 2 mile (Johnson and Instruments, Inc., 1979) others, 1965) W East-West, 4000 feet barometric, 3 mile (USGS, 1981) L East-West, 500 feet above ground, 0.5 mile (Davis and X East-West, 400 feet above ground; 3 mile (EG&G others, 1965) GeoMetries, 1979) M East-West, 12,000 feet barometric, 2 mile (USGS, 1975b)
28 SOURCES OF DATA Davis, W. E., Kinoshita, W. T., and Robinson, G. D., 1965, Bouguer grav U.S. Geological Survey, 1969, Aeromagnetic map of the Cut Bank-Hungry ity, aeromagnetic, and generalized geologic map of the eastern part of Horse Reservoir area, northwestern Montana: U.S. Geological Survey the Three Forks Basin, Broadwater, Madison, and Gallatin Counties, Open-File Report, scale 1:250,000. Montana: U.S. Geological Survey Geophysical Investigations Map ___ 1972a, Aeromagnetic map of parts of the Hamilton and Elk GP-498, scale 1:62,500. City 1 o by 2° quadrangles, Idaho-Montana: U.S. Geological Sur Douglas, J. K., 1971, Total-intensity aeromagnetic map of a portion of the vey Geophysical Investigations Map GP-832, scale 1:250,000. Montana lineament: Billings, Montana University of Montana. ___ 1972b, Aeromagnetic map of southeastern Idaho and part of EG&G GeoMetries, 1979, National Uranium Resource Evaluation aerial southwestern Montana: U.S. Geological Survey Open-File Report, gamma-ray and magnetic survey, Powder River II Project, Newcastle scale 1:500,000. and Gillette [1 o by 2° quadrangles], Wyoming and South Dakota, and ___ 1973a, Aeromagnetic map of parts of the Kalispell and Cut Ekalaka [1 o by 2o quadrangle], Montana, South and North Dakota bank 1 o by 2° quadrangles, Montana: U.S. Geological Survey Final Report: U.S. Department of Energy Grand Junction Office [Re Open-File Report, scale 1:250,000. port] GJBX 82-79, v. 2, n.p., scale 1:500,000. ___ 1973b, Aeromagnetic map of parts of the Okanogan and Johnson, R. W., Jr., Henderson, J. R., and Tyson, N. S., 1965, Sandpoint 1 o by 2° quadrangles, Washington-Idaho-Montana: Aeromagnetic map of the Boulder Batholith area, southwestern Mon U.S. Geological Survey Open-File Report, scale 1:250,000. tana: U.S. Geological Survey Geophysical Investigations Map GP- ___ 1973c, Aeromagnetic map of Yellowstone National Park and 538, scale 1:250,000. vicinity, Wyoming-Montana-Idaho: U.S. Geological Survey Open Kleinkopf, M. D., Harrison, J. E., and Zartman, R. E., 1972, Aeromagne File Report, 4 sheets, scale 1:125,000. tic and geologic map of part of northwestern Montana and northern ___ 1975a, Aeromagnetic map of the southeastern part of the Bil Idaho: U.S. Geological Survey Geophysical Investigations Map GP- lings 1 o by 2° quadrangle, Montana: U.S. Geological Survey 830, scale 1:250,000. Open-File Report, 75-656, scale 1:250,000. Kleinkopf, M. D., and Mudge, M. R., 1972, Aeromagnetic, Bouguer grav ___ 1975b, Aeromagnetic map of southwestern Montana and ity, and generalized geologic studies of the Great Falls-Mission Range east-central Idaho: U.S. Geological Survey Open-File Report, 75- area, northwestern Montana: U.S. Geological Survey Professional 655, scale 1:250,000. Paper 726A, 19 p. ___ 1981, Aeromagnetic map of northeastern Montana and west Texas Instruments, Inc., 1979, National Uranium Resource Evaluation ae ern North Dakota: U.S. Geological Survey Open-File Report, 81- rial radiometric and magnetic reconnaissance survey of portions of 434, scale 1:250,000. Arizona, Idaho, Montana, New Mexico, South Dakota, and Zietz, Isidore, and others, 1971, Interpretation of an aeromagnetic Washington, [Havre, Great Falls, Lewistown and Shelby 1o by 2° strip across the northwestern United States: Geological Society of quadrangles]-Final Report: U.S. Department of Energy Grand Junc America Bulletin, v. 82, no. 12, p. 3347-3372. tion Office. [Report] GJBX 126-79, v. 2B, C, E, F, n.p., scale 1:500,000.
29 NEBRASKA
JOJ• ------102" 101° 1000 99" -~ -----..... 97° '... sa· ......
D A
I \ ) '
50 100 MILES ~~rr+-~~~~~~~ 50 100 150 KILOMETERS
SPECIFICATIONS A East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, F East-West, 400 feet above ground, 6 mile (Geodata, 1981 b) 1979a) G East-West, 400 feet above ground, 5 mile (Texas Instruments, 8 East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, 1978) 1979b) H East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, C East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, 1978) 1980) I East-West, 1000 feet above ground, 2 mile (USGS, 1973) D East-West, 400 feet above ground, 6 mile (Geodata, 1981a) E East-West, 6000 feet above sea level, 5 mile (Zietz and others, 1966)
SOURCES OF DATA EG&G GeoMetries, 1978, National Uranium Resource Evaluation ae Evaluation aerial radiometric and magnetic survey, Valentine rial gamma-ray and magnetic survey, Fremont quadrangle, Neb [quadrangle} Nebraska and South Dakota-Final Report: U.S. De raska, Iowa; Lincoln quadrangle, Nebraska; Manhattan and partment of Energy Grand Junction Office [Report] GJBX 41-81, Hutchinson quadrangles, Kansas-Final Report: U.S. Department v. 2, n.p., scale 1:500,000. of Energy Grand Junction Office [Report) GJBX 20-78, v. 2, n.p., ___ 1981b, National Uranium Resource Evaluation aerial scale 1:500,000. radiometric and magnetic survey, McCook quadrangle, Neb ___ 1979a, National Uranium Resource Evaluation aerial raska-Final Report: U.S. Department of Energy Grand Junction gamma-ray and magnetic survey; Powder River II Project, Tor Office [Report] GJBX 55-81, v. 2, n.p., scale 1:500,000. rington and Casper quadrangles, Wyoming and Nebraska-Final Texas Instruments, Inc., 1978 ,National Uranium Resource Evaluation Report: U.S. Department of Energy Grand Junction Office [Re aerial radiometric and magnetic reconnaissance survey of portions port] GJBX 158-79, v. 2, n.p., scale 1:500,000. of the Great Plains and Central Lowlands [Sioux City (v. 2-A), ___ 1979b, National Uranium Resource Evaluation aerial O'Neill (v. 2-B), Broken Bow (v. 2-C), and Grand Island (v. 2-D) gamma-ray and magnetic survey, Rock Springs, Rawlins, and quadrangles] -Final Report: U.S. Department of Energy Grand Cheyenne quadrangles, Wyoming, and the Greeley quadrangle, Junction Office [Report) GJBX 100-78, v. 2, n.p., scale Colorado-Final Report: U.S. Department of Energy Grand Junc 1:500,000. tion Office [Report] GJBX 17-79, v. 2, n.p., scale 1:500,000. U.S. Geological Survey, 1973, Aeromagnetic map of southeastern ___ 1980, National Uranium Resource Evaluation aerial gamma Nebraska and parts of adjacent states: U.S. Geological Survey ray and magnetic survey, Nebraska-Texas project, Alliance and Open-File Report, scale 1:250,000. Scottsbluff quadrangles, Nebraska-Final Report: U.S. Depart Zietz, Isidore, and others, 1966, Crustal study of a continental strip ment of Energy Grand Junction Office [Report) GJBX 25-80, v. from the Atlantic ocean to the Rocky Mountains: Geological Soci 2, n.p., scale 1:500,000. ety of America Bulletin, v. 77, no. 12, p. 1427-1448, pis. Geodata International, Inc., 198la, National Uranium Resource
30 NEVADA
120" 119" 118" L East-West, 8000 feet barometric, 0.5 mile (Boynton and 42"t-- others, 1963a and b; Philbin and White, 1965a, b, c, d, e, f, g, h, i, and j) A-2 M North-South, 12,000 feet barometric, 1 mile (USGS, 1976b) N East-West, 9000 feet barometric, 3 mile (USGS, 1975) 0 North-South, 400 feet above ground, 3 mile (Geo-Life, 1979) 41·-~,----+----.-+-_J_--1-----1--r_J_--J-----1 P East-West, 400 feet above ground, 3 mile (Western B Geophysical Co., 1979) Q East-West, 8000 feet barometric, 1 mile (unpublished data) I I c 1 A-1 40~~-----r----L-r----~~~-+----+----- SOURCES OF DATA Boynton, G. R., Meuschke, J. L., and Vargo, J. L., 1963a, Aeromagnetic map of the Timber Mountain quadrangle and part of the Silent Ca nyon quadrangle, Nye County, Nevada: U.S. Geologicai Survey Geophysical Investigations Map GP-443, scale 1:62,500. ___1963b, Aeromagnetic map of the Tippipah Spring quadrangle and parts of the Papoose Lake and Wheelbarrow Peak quadrang les, Nye County, Nevada: U.S. Geological Survey Geophysical In vestigations Map GP-441, scale 1:62,500. Davis, W. E., and Stewart, J. H., 1970, Aeromagnetic and generalized geologic map of the Austin area, Lander County, Nevada: U.S. ' Geological Survey Geophysical Investigations Map GP-694, scale ' 1:125,000. Geo-Life (A joint venture between High Life Helicopters, Inc. and ' ' Geodata International, Inc.), 1979, National Uranium Resource Evaluation aerial radiometric and magnetic survey, Death Valley National Topographic Map, California and Nevada-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 164-79, v. 2, n.p., scale 1:500,000. Philbin, P. W., and White, B. L., Jr., 1965a, Aeromagnetic map of the Belted Peak quadrangle and part of the White Blotch Springs quadrangle, Nye County, Nevada: U.S. Geological Survey Geophysical Investigations Map GP-514, scale 1:62,500. K ___1965b, Aeromagnetic map of the Black Mountain quad 0 50 100 MILES ' rl ~.·~·~·~·\r~'-L 1 ~·~1 ~·~~·,~' ' rangle, Nye County, Nevada: U.S. Geological Survey Geophysical 0 50 100 150 KILOMETERS N Investigations Map GP-519, scale 1:62,500. ,, ___1965c, Aeromagnetic map of the Cactus Spring quadrangle and part of the Goldfield quadrangle, Esmeralda and Nye Coun ties, Nevada: U.S. Geological Survey Geophysical Investigations Map GP-511, scale 1:62,500. SPECIFICATIONS ___1965d, Aeromagnetic map of parts of the Cactus Peak and Stinking Spring quadrangles, Nye County, Nevada: U.S. Geologi A East-West, 9000 feet barometric, 2 mile (A-1, cal Survey Geophysical Investigations Map GP-517, scale USGS, 1972a; A-2, USGS, 1972b) 1:62,500. B East-West, 1000 feet above ground, 0.5 mile (USGS, 1964); ___1965e, Aeromagnetic map of parts of the Kawich Peak and North-South, 9000 feet barometric, 1 mile (USGS, 1967a, b, c, Reveille Peak quadrangles, Nye County, Nevada: U.S. Geological and d; 1968a, c, e, f, g, h, i, j, k and I; 1970, 1973a, b, Survey Geophysical Investigations Map GP-516, scale 1:62,500. d, and e) ___1965f, Aeromagnetic map of the Mellan quadrangle, Nye C North-South, 12,000 feet barometric, 5 mile (Zietz and County, Nevada: U.S. Geological Survey Geophysical Investiga others, 1978) tions Map GP-518, scale 1:62,500. D North-South, 9000 feet barometric, 1 mile (Robertson, ___1965g, Aeromagnetic map of the Quartzite Mountain quad 1970) rangle, Nye County, Nevada: U.S. Geological Survey Geophysical E North-South, 9000 feet barometric, 1 mile (Davis and Investigations Map GP-515, scale 1:62,500. Stewart, 1970) ___1965h, Aeromagnetic map of the Sarcobatus Flat area, Es F North-South, 9000 feet barometric, 1 mile {F-1, meralda and Nye Counties, Nevada: U.S. Geological Survey USGS, 1968b); East-West 9000 feet barometric, 1 mile Geophysical Investigations Map GP-512, scale 1:125,000. (F-2, USGS, 1969) ___1965i, Aeromagnetic map of the Silent Canyon quadrangle, G East-West, 9000 to 15,000 feet barometric, 1 mile Nye County, Nevada: U.S. Geological Survey Geophysical Inves (G-1, USGS, 1971a; G-2, USGS, 1971b; tigations Map GP-520, scale 1:62,500. G-3, USGS, 1971c) ___ 1965j, Aeromagnetic map of the Wheelbarrow Peak quad H East-West, 500 and 1000 feet above ground, 1 mile (USGS, rangle and part of the Groom Mine quadrangle, Nye and Lincoln 1968d) Counties, Nevada: U.S. Geological Survey Geophysical Investiga I North-South, 11,500 feet barometric, 1 mile (1-1, tions Map GP-513, scale 1:62,500. USGS, 1976c; 1-2, USGS, 1976d; 1-3, Robertson, E. S., 1970 Relations between geological structure and USGS, 1976e) aeromagnetic anomalies in central Nevada: Geological Society of J North-South, 9000 feet barometric, 1 mile (J-1, America Bulletin, v. 81, no. 7, p. 2045-2060. USGS, 1973c; J-2, USGS, 1976a) U.S. Geological Survey, 1964, Stratigraphy and structure of the Antler K East-West, 12,500 feet barometric, 5 mile (Zietz and Peak quadrangle, Humboldt and Lander Counties, Nevada: U.S. others, 1978) Geological Survey Professional Paper 459-A, 7 pis., 93 p.
31 SOURCES OF DATA ___1967b, Aeromagnetic map of the Dixie Flats and Elko 2 quad ___1971c, Aeromagnetic map of parts of the Walker Lake, Reno, rangles, Elko County, Nevada: U.S. Geological Survey Open-File Chico, and Sacramento 1 o by 2° quadrangles, Nevada-Califor Report, scale 1:62,500. nia: U.S. Geological Survey Geophysical Investigations Map GP- · 196 7 c, Aeromagnetic map of the Palisade 1 and Palisade 2 751, scale 1:250,000. quadrangles, Eureka and Elko Counties, Nevada: U.S. Geological ___1972a, Aeromagnetic map of parts of the Lovelock, Reno, Survey Open-File Report, scale 1:62,500. and Millet 1 o by 2° quadrangles, Nevada: U.S. Geological Survey ___1967d, Aeromagnetic map of the Robinson Mountain quad Open-File Report, scale 1:250,000. rangle, Elko County, Nevada: U.S. Geological Survey Open-File ___1972b, Aeromagnetic map of the Vya and part of the McDer Report, scale 1:62,500. mitt 1 o by 2° quadrangles, Nevada: U.S. Geological Survey Open ___1968a, Aeromagnetic map of the Battle Mountain and Dun File Report, scale 1:250,000. phy quadrangles, Lander and Eureka Counties, Nevada: U.S. ___1973a, Aeromagnetic map of the Fencemaker quadrangle, Geological Survey Open-File Report, scale 1:62,500. Pershing County, Nevada: U.S. Geological Survey Open-File Re ___1968b, Aeromagnetic map of the Eureka region, Eureka and port, scale 1:62,500. White Pine Counties, Nevada: U.S. Geological Survey Open-File ___ 1973b, Aeromagnetic map of the Leach Hot Springs and Report, scale 1:62,500. Cherry Creek quadrangles, Pershing, Humboldt, and Lander ___1968c, Aeromagnetic map of parts of the Golconda and Bat Counties, Nevada: U.S. Geological Survey Open-File Report, tle Mountain quadrangles, Humboldt, Lander and Eureka Coun scale 1:62,500. ties, Nevada: U.S. Geological Survey Open-File Report, scale ___1973c, Aeromagnetic map of the southeastern part of the 1:62,500. Lund and the eastern half of the Caliente 1 o by 2° quadrangles, ___1968d, Aeromagnetic map of the Hot Creek Range region, Nevada: U.S. Geological Survey Open-File Report, scale south-central Nevada: U.S. Geological Survey Geophysical Inves 1:250,000. tigations Map GP-637, scale 1:250,000. ___1973d, Aeromagnetic map of the McCoy, The Cedars and ___1968e, Aeromagnetic map of the Jarbidge quadrangle, Elko Carico Lake quadrangles, Lander County, Nevada: U.S. Geologi County, Nevada: U.S. Geological Survey Open-File Report, scale cal Survey Open-File Report, scale 1:62,500. 1:62,500. ___1973e, Aeromagnetic map of the Mount Tobin, Buffalo ___1968f, Aeromagnetic map of the Midas quadrangle, Elko Springs, Cain Mountain, and Mount Moses quadrangles, Pershing County, Nevada: U.S. Geological Survey Open-File Report, scale and Lander Counties, Nevada: U.S. Geological Survey Open-File 1:62,500. Report, scale 1:62,500. ___ 1968g, Aeromagnetic map of the North Fork quadrangle, ___1975, Aeromagnetic map of southeastern California and part Elko County, Nevada: U.S. Geological Survey Open-File Report, of southern Nevada: U.S. Geological Survey Open-File Report scale 1:62,500. 75-52, scale 1:250,000. ___1968h, Aeromagnetic map of the southern part of the Norths ___1976a, Aeromagnetic map for parts of the Caliente and Lund Ranch quadrangle, Humboldt County, Nevada: U.S. Geological 1 o by 2o quadrangles, Nevada: U.S. Geological Survey Open-File Survey Open-File Report, scale 1:62,500. Report 76-364, scale 1:125,000. ___1968i, Aeromagnetic map of the Tuscarora quadrangle, Elko ___1976b, Aeromagnetic map of the Conners Pass and Schell County, Nevada: U.S. Geological Survey Open-File Report, scale Peaks quadrangles, Nevada: U.S. Geological Survey Open-File 1:62,500. Report 76-363, scale 1:62,500. ___1968j, Aeromagnetic map of the Unionville region, Pershing ___1976c, Aeromagnetic map for part of southwestern Ely 1 o by County, Nevada: U.S. Geological Survey Open-File Report, scale 2° quadrangle, Nevada: U.S. Geological Survey Open-File Report 1:62,500. 76-360, scale 1:62,500. ___1968k, Aeromagnetic map of the Wild Horse, Mt. Velma, ___1976d, Aeromagnetic map for part. of central Lund 1 o by 2o Mountain City and Rowland quadrangles, Elko County, Nevada: quadrangle, Nevada: U.S. Geological Survey Open-File Report U.S. Geological Survey Open-File Report, scale 1:62,500. 76-361, scale 1:62,500. ___19681, Aeromagnetic map of the Wilson Reservoir, Bull Run, ___1976e, Aeromagnetic map for part of northwestern Lund 1 o and Owyhee quadrangles and part of the Hat Peak quadrangle, by 2o quadrangle, Nevada: U.S. Geological Survey Open-File Re Elko County, Nevada: U.S. Geological Survey Open-File Report, port 76-362, scale 1:125,000. scale 1:62,500. Western Geophysical Co. of America, 1979, National Uranium Re ___1969, Aeromagnetic map of the Monitor Valley and vicinity, source Evaluation aerial gamma-ray and magnetic survey of Las Lander and Eureka Counties, Nevada: U.S. Geological Survey Vegas, Kingman, Williams, and Prescott quadrangles, Nevada, Open-File Report, scale 1:62,500. California and Arizona-Final Report: U.S. Department of Energy ___1970, Aeromagnetic map of the Winnemucca area, north Grand Junction Office [Report] GJBX 59-79, vol. 2, n.p., scale western Nevada: U.S. Geological Survey Open-File Report, scale 1:500,000. 1:62,500. Zietz, Isidore, Gilbert, Francis P., and Kirby, John R., 1978, ___1971a, Aeromagnetic map of parts of the Goldfield, Aeromagnetic map of Nevada: color coded intensities: U.S. Mariposa, and Death Valley 1 o by 2° quadrangles, Nevada Geological Survey Geophysical Investigations Map GP-922, scale California: U.S. Geological Survey Geophysical Investigations 1:1,000,000. Map GP-753, scale 1:250,000. ___1971b, Aeromagnetic map of parts of the Tonopah and Millet 1 o by 2° quadrangles, Nevada: U.S. Geological Survey Geophysi cal Investigations Map GP-752, scale 1:250,000. NEW MEXICO 106° 10JD, _____ 106" 105~ ___ _!04°____ 4''
A B E F )
D I 36"·~------r------~------~------~------~------~ I I
G H I J I I I s v w L 0 p X y T AA
LL MM
NN 00 I ____ lI
0 50 100 MILES \h·~··~·h'•r'•~·~·~·1~·~~·,~' 0 50 100 150 KILOMETERS
SPECIFICATIONS A East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, w East-West, 1000 feet above ground 1 mile (Dempsey and 1979) Hill, 1950d) B North-South, 1000 feet above ground, 1 mile (USGS, 1980) X East-West, 1000 feet above ground, 1 mile (Dempsey and c East-West, 11,000 feet barometric, 1 mile (USGS, 1976a) Hill, 1950a) D East-West, 11,000 feet barometric, 1 mile (USGS, 1972a) y East-West, 1000 feet above ground, 1 mile (Dempsey and E East-West, 400 feet above ground, 6 mile (EG&G GeoMetries, Hill, 1950b) 1980) z Specifications unknown (unpublished data) F East-West, 400 feet above ground, 3 mile (Texas AA East-West, 400 feet above ground, 3 mile (Geodata Instruments, Inc., 1980) International, Inc., 1976b) G East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, BB East-West, 400 feet above ground, 3 mile (Texas 1979) Instruments, Inc., 1979b) H East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, cc East-West, 400 feet above ground, 6 mile (Geo-Life, 1979b) 1979) DD East-West, 10,500 feet barometric, 1 mile (USGS, 1972b) I East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, EE East-West, 400 feet above ground, 3 mile (Geo-Life, 1979b) 1980) FF Northwest-Southeast, 1737 meter barometric, 2 kilometer J East-West, 400 feet above ground, 3 mile (Geodata (Bath, 1977) International, Inc., 1976c) GG East-West, 1500 feet mean terrain clearance, 0.6 mile K East-West, 400 feet above ground, 3 mile (Texas (USGS, 1979b) Instruments, Inc., 1979a) HH East-West, 400 feet above ground, 3 mile (Texas L East-West, 8500 feet terrain clearance, 1 mile (USGS, 1979a) Instruments, Inc., 1979d) M East-West, 9500 feet terrain clearance, 1 mile (USGS, 1979a) II East-West, 400 feet above ground, 3 mile (Texas N East-West, 400 feet above ground, 3 mile (Geo-Life, 1979a) Instruments, Inc., 1979c) 0 East-West, 8000 feet barometric, 1 mile (USGS, 1975a) JJ East-West, 10,000 feet above sea level, 1 mile (USGS, 1974a) p East-West, 10,000 feet barometric, 1 mile (USGS, 1975b) KK Specifications unknown (unpublished data) Q East-West, 10,000 feet above sea level, 1 mile (USGS, 1974b) LL Vertical-intensity ground survey, 1 mile (unpublished data) R East-West, 8000 feet barometric, 1 mile (USGS, 1975c) MM East-West, 400 feet above ground, 3 mile (Geodata s East-West, 7500 feet barometric, 1 mile (USGS, 1976b) International, Inc., 1976a) T East-West, 7000 feet barometric, 1 mile (USGS, 1976b) NN East-West, 500 feet above ground, 1 mile (USGS, 1973) u East-West, 8500 feet barometric, 1 mile (USGS, 1976b) 00 East-West, 400 feet above ground, 3 mile (Geodata v East-West, 1000 feet above ground, 1 mile (Dempsey and International, Inc., 1980) Hill, 1950c)
33 SOURCES OF DATA Bath, G. D., 1977, Aeromagnetic maps with geologic interpretations for the ___ 1979b, National Uranium Resource Evaluation aerial Tularosa Valley, south-central New Mexico: U.S. Geological Survey radiometric and magnetic reconnaissance survey of portions of Open-File Report 77-258, 16 p., 12 pis., 9 figs., scale 1:62,500. Arizona-New Mexico, Clifton quadrangle-Final Report: U.S. De Dempsey, W. J., and Hill, M. E., 1950a, Total-intensity aeromagnetic map partment of Energy Grand Junction Office [Report] GJBX 23-79, of parts of Guadalupe and De Baca Counties, New Mexico (R. 16 E. vol. 2B, n.p., scale 1:500,000. R. 21 E. and T. 3 N.-T. 6 N.): U.S. Geological Survey Geophysical ___ 1979c, National Uranium Resource Evaluation aerial Investigations Map GP-16, scale 1:63,360. radiometric and magnetic reconnaissance survey of portions of ___ 1950b, Total-intensity aeromagnetic map of parts of Arizona-New Mexico, Douglas quadrangle-Final Report: U.S. ·Guadalupe and De Baca Counties, New Mexico (R. 21 E.-R. 26 Department of Energy Grand Junction Office [Report] GJBX 23- E. and T. 3 N.-T. 6 N.): U.S. Geological Survey Geophysical In 79, vol. 2F, n.p., scale 1:500,000. vestigations Map GP-15, scale 1:63,360. ___ 1979d, National Uranium Resource Evaluation aerial ___ 1950c, Total-intensity aeromagnetic map of parts of San radiometric and magnetic reconnaissance survey of portions of Miguel and Guadalupe Counties, New Mexico (R. 16 E.- R. 21 E. Arizona-New Mexico, Silver City quadrangle-Final Report: U.S. and T. 6 N.-T. 10 N., and part of Anton Chico Grant): U.S. Department of Energy Grand Junction Office [Report] GJBX 23- Geological Survey Geophysical Investigations Map GP-18, scale 79, vol. 2D, n.p., scale 1:500,000. 1:63,360. ___ 1980, National Uranium Resource Evaluation aerial ___ 1950d, Total-intensity aeromagnetic map of parts of San radiometric and magnetic reconnaissance survey of portions of Miguel and Guadalupe Counties, New Mexico (R. 21 E.-R. 25 E. New Mexico, Oklahoma, and Texas-Dalhart quadrangle-Final and T. 6 N.-T. 12 N. ): U.S. Geological Survey Geophysical Inves Report: U.S. Department of Energy Grand Junction Office [Re tigations Map GP-17, scale 1:63,360. port] GJBX 46-80, vol. 2, n.p., scale 1:500,000. EG&G GeoMetries, Inc., 1979, National Uranium Resource Evaluation U.S. Geological Survey, 1972a, Aeromagnetic map of the Jemez area, aerial gamma-ray and magnetic survey, Raton Basin Project, Ship New Mexico: U.S. Geological Survey Open-File Report, scale rock and Gallup quadrangles, Arizona/New Mexico and Albuquer 1:250,000. que quadrangle, New Mexico-Final Report: U.S. Department of ___ 1972b, Aeromagnetic map of the Morenci-Monticello area, Energy Grand Junction Office [Report] GJBX 116-79, v. 2, n.p., southeastern Arizona and southwestern New Mexico: U.S. scale 1:500,000. Geological Survey Geophysical Investigations Map GP-838, scale ___ 1980, National Uranium Resource Evaluation aerial gamma 1:250,000. ray and magnetic survey, Raton Basin Project, The Raton and ___ 1973, Aeromagnetic map of the Carlsbad area, New Mexico Santa Fe quadrangles of New Mexico-Final Report: U.S. Depart and Texas: U.S. Geological Survey Geophysical Investigations ment of Energy Grand Junction Office [Report] GJBX 9-80, v. 2, Map GP-861, scale 1:250,000. n.p., scale 1:500,000. ___ 1974a, Aeromagnetic map of parts of the Silver City and Las Geo-Life (A joint venture between High-Life Helicopters, Inc. and Cruces 1 o by 2° quadrangles, southwestern New Mexico: U.S. Geodata International Inc.), 1979a, National Uranium Resource Geological Survey Open-File Report, scale 1:250,000. Evaluation aerial radiometric and magnetic survey, Socorro Na ___ 1974b, Aeromagnetic map of parts of the Socorro and tional Topographic Map, New Mexico-Final Report: U.S. Depart Tularosa 1 o by 2° quadrangles, southwestern New Mexico: U.S. ment of Energy Grand Junction Office [Report] GJBX 163-79, v. Geological Survey Open-File Report, scale 1:250,000. 2, n.p., scale 1:500,000. ___ 1975a, Aeromagnetic map of Albuquerque and vicinity, New ___ 1979b, National Uranium Resource Evaluation aerial Mexico: U.S. Geological Survey Open-File Report 75-186, scale radiometric and magnetic survey, Tularosa National Topographic 1:125,000. Map, New Mexico-Final Report: U.S. Department of Energy ___ 1975b, Aeromagnetic map of an area east of Albuquerque, Grand Junction Office [Report] GJBX 67-79, v. 2, n.p., scale New Mexico: U.S. Geological Survey Open-File Report 75-183, 1:500,000. scale 1:125,000. Geodata International, Inc., 1976a, National Uranium Resource Evaluation ___ 1975c, Aeromagnetic map of an area north and east of aerial radiometric and magnetic survey, Brownfield National T opog Socorro, New Mexico: U.S. Geological Survey Open-File Report raphic Map, Texas and New Mexico-Final Report: U.S. Department 75-185, scale 1:125,000. of Energy Grand Junction Office [Report] GJBX 33-76, v. 2, n.p., ___ 1976a, Aeromagnetic map of an area north of Abiquiu, New scale 1:500,000. Mexico: U.S. Geological Survey Open-File Report 76-503, scale ___ 1976b, National Uranium Resource Evaluation aerial 1:62,500. radiometric and magnetic survey, Clovis National Topographic ___ 1976b, Residual magnetic intensity map of central New Map, Texas and New Mexico-Final Report: U.S. Department of Mexico: U.S. Geological Survey Open-File Report 76-806, scale Energy Grand Junction Office [Report] GJBX 33-76, v. 2, n.p., 1:250,000. scale 1:500,000. ___ 1979a, Aeromagnetic map of the Malpais area, New Mexico: ___ 1976c, National Uranium Resource Evaluation aerial U.S. Geological Survey Open-File Report 79-1644, scale radiometric and magnetic survey, Tucumcari National Topog 1:250,000. raphic Map, Texas and New Mexico-Final Report: U.S. Depart ___ 1979b, Aeromagnetic map of the north and west parts of the ment of Energy Grand Junction Office [Report] GJBX 33-76, v. Silver City 1 o by 2° quadrangle, New Mexico and Arizona: U.S. 2, n.p., scale 1:500,000. Geological Survey Open-File Report 79-1452, 5 sheets, scale ___ 1980, National Uranium Resource Evaluation aerial 1:62,500. radiometric and magnetic survey, Hobbs National Topographic ___ 1980, Aeromagnetic map of northeast Arizona and northwest Map, Texas and New Mexico-Final Report: U.S. Department of New Mexico: U.S. Geological Survey Open-File Report 80-614, 4 Energy Grand Junction Office [Report] GJBX 228-80, v. 2, n.p., sheets, scale 1:250,000. scale 1:500,000. Texas Instruments, Inc., 1979a, National Uranium Resource Evalua tion aerial radiometric and magnetic reconnaissance survey of por tions of Arizona, Idaho, Montana, New Mexico, South Dakota, and Washington, St. Johns quadrangle-Final Report:U.S. De partment of Energy Grand Junction Office [Report] GJBX 126- 79, v. 2L, n.p., scale 1:500,000.
34 NEW YORK
750 740
79°__ _ 78°
X y
,. / u v / I I 4ZO-L- __
0 50 100 MILES 1 I I I,·,,· I 1 I 'I I I 0 50 100 150 KILOMETERS
SPECIFICATIONS A East-West, 1700 feet barometric, 1 mile (USGS, 1979b) P East-West, 1000 feet above ground,% mile (Balsley and B East-West, 1700 feet barometric, 1/2 mile (USGS, 1979b) others, 1965e) C East-West, 500 feet above ground,% mile (USGS, 1975a) Q East-West, 1000 feet above ground, 1 mile (USGS, 1978) D North-South, 1000 feet above ground,% mile (Zietz and R North-South, 1000 feet above ground, 1 mile (USGS, 1978) others, 1972) S East-West, 1000 feet above ground, 1/2 mile (Zietz and E East-West, 1000 feet above ground,% mile (Zietz and others, 1972) others, 1972) T North-South, 1000 feet above ground, 1/2 mile (Zietz and F East-West, 1000 feet above ground,% mile (Zietz and others, 1972) others, 1972) U East-West, 1000 feet above ground, 2 mile (USGS, 1975b G North-South, 1000 feet above ground,% mile (Balsley and V East-West, 3000 feet barometric, 2 mile (USGS, 1979a) others, 1954b) W East-West, 1000 feet above ground, 1 mile (USGS, 1977) H North-South, 1000 feet above ground, %mile (Balsley and X North-South, 500 feet above ground, 1 mile (unpublished others, 1954a) data) I East-West, 1000 feet above ground, %mile (Balsley and Y North-South, 500 feet above ground, 1 mile (Zietz and others, 1959a) others, 1972) J East-West, 1000 feet above ground,% mile (Balsley and Z East-West, 500 feet above ground, 1 mile (Zietz and others, 1959b) others, 1972) K North-South, 1000 feet above ground,% mile (Balsley and AA East-West, 3000 feet barometric, 2 mile (USGS, 1979c) others, 1965a) BB East-West, 500 feet above ground, 1/2 mile (Zietz and L North-South, 1000 feet above ground, 1/2 mile (Balsley and others, 1972) others, 1965f) CC North-South, 500 feet above ground, 1/2 mile (Henderson M East-West, 1000 feet above ground, 1/2 mile (Balsley and and others, 1966) others, 1965b) DD Northwest-Southeast, 500 to 2500 feet barometric, 5 mile N East-West, 1000 feet above ground, 1/2 mile (Balsley and (Zietz and others, 1972) others, 1965d) EE Specifications unknown (unpublished data) 0 East-West, 1000 feet above ground,% mile (Balsley and others, 1965c)
35 SOURCES OF DATA Balsley, J. R., and Bromery, R. W., 1965a, Aeromagnetic map of the Big ___ 1954b, Total aeromagnetic intensity and geologic map of Moose quadrangle, Herkimer and Hamilton Counties, New York: U.S. Stark, Childwold and part of Russell quadrangles, New York: U.S. Geological Survey Geophysical Investigations Map GP-504, scale Geological Survey Geophysical Investigations Map GP-117, scale 1:62,500. 1:62,500. ___ 1965b, Aeromagnetic map of part of the Lowville quadrangle, Henderson, J. R., Andreasen, G. E., and Petty, A. J., 1966, Aeromagne Lewis County, New York: U.S. Geological Survey Geophysicalln tic map of northern New Jersey and adjacent parts of New York and vestigationsMapGP-508, scale 1:62,500. Pennsylvania: U.S. Geological Survey Geophysical Investigations ___ 1965c, Aeromagnetic map of the McKeever quadrangle and Map GP-562, scale 1:125,000. part of the Port Leyden quadrangle, north-central New York: U.S. U.S. Geological Survey, 1975a, Aeromagnetic survey of Odensburg and Geological Survey Geophysical Investigations Map GP-510, scale vicinity, New York: U.S. Geological Survey Open-File Report 75- 1:62,500. 526, 16 plates, scale 1:62,500. ___ 1965d, Aeromagnetic map of the Number Four quadrangle, ___ 1975b, Aeromagnetic map of westernmost New York: U.S. Herkimer and Lewis Counties, New York: U.S. Geological Survey Geological Survey Open -File Report 7 5-28, scale 1:250,000. Geophysical Investigations Map GP-502, scale 1:62,500. -----,- 1977, Aeromagnetic map of parts of the Rochester and Utica ___ 1965e, Aeromagnetic map of the Old Forge and part of the West 1 o by 2o quadrangles, New York: U.S. Geological Survey Open-File Canada Lakes quadrangle, Herkimer and Hamilton Counties, New Report 77-553, scale 1:250,000. York: U.S. Geological Survey Geophysical Investigations Map GP- ___ 1978, Aeromagnetic map of the eastern part of the Adirondack 501, scale 1:62,500. Mountains, New York: U.S. Geological Survey Open-File Report ___ 1965f, Aeromagnetic map of the Raquette Lake quadrangle, 78-279, scale 1:250,000. Hamilton County, New York: U.S. Geological Survey Geophysical ___ 1979a, Aeromagnetic map of central New York: U.S. Geologi Investigations Map GP-503, scale 1:62,500. cal Survey Open-File Report 79-653, scale 1:250,000. Balsley, J. R., Buddington, A. F., and others, 1959a, Aeromagnetic and ___ 1979b, Aeromagnetic map of northern New York: U.S. geologic map of the Oswegatchie quadrangle, St. Lawrence, Her Geological Survey Open -File Report 79-655, scale 1:250,000. kimer, and Lewis Counties, New York: U.S. Geological Survey ___ 1979c, Aeromagnetic map of southeastern New York: U.S. Geophysical Investigations Map GP-192, scale 1:62,500. Geological Survey Open -File Report 79-654, scale 1:250,000. ___ 1959b, Aeromagnetic and geologic map of the Tupper Lake Zietz, Isidore, Gilbert, F. P., and Kirby, J. R., 1972, Northeastern United quadrangle, St. Lawrence, Hamilton and Franklin Counties, New States regional aeromagnetic maps: U.S. Geological Survey Open York: U.S. Geological Survey Geophysical Investigations Map GP- File Reports, 13 sheets, scale 1:250,000. (Aeromagnetic map of New 193, scale 1:62,500. York: U.S. Geological Survey Geophysical Investigations Map GP- Balsley, J. R., Hill, M. E., and others, 1954a, Aeromagnetic survey and 938.) geologic map of Cranberry Lake quadrangle, New York: U.S. Geological Survey Geophysical Investigations Map GP-118, scale 1:62,500.
36 NORTH CAROLINA
7~
82'l p n' B /- 840/-- A c F
3 ~10'[ ----- ~~----jL-_ -_-_-_--...~~_:: __ ---l------f--__L-+----t-t---/ \_ __ _ ' ' 0
0 50 100 MILES 1 ' 111 11 I 'I I I I 1 'I I 0 50 100 150 KILOMETERS "
SPECIFICATIONS All areas flown east-west, except area P which was flown north-south. A 400 feet above ground, 3 mile (LKB Resources, 1979b) B 500 feet above ground, 1 mile (USGS, 1977a) C 500 feet above ground, 1 mile (USGS, 1978c) D 500 feet above ground, 1 mile (USGS, 1977c) E 500 feet above ground,% mile (Bates and Bell, 1965) F 500 feet above ground,% mile (Henderson and Gilbert, 1966) G 400 feet above ground,% mile (USGS, 1971a, b, c, d, and e) H 400 feet above ground,% mile (USGS, 1973a, b, c, d, and e) I 500 feet above ground,% mile (USGS, 1974) J 500 feet above ground, 1 mile (USGS, 1977b) K 500 feet above ground, 1 mile (Coastal Plains Regional Commission and USGS, 1976a) L 500 feet above ground, 1 mile (USGS, 1977d) M 500 feet above ground, 1 mile (USGS, 1978b) N 500 feet above ground, 1 mile (Coastal Plains Regional Commission and USGS, 1976b) 0 500 feet above ground, 1 mile (USGS, 1978a) P 5000 feet barometric, 1 mile (USGS, 1976) Q 400 feet above ground, 6 mile (Carson Helicopters, 1980) R 400 feet above ground, 3 mile (LKB Resources, 1979a)
37 SOURCES OF DATA Bates, R. G., and Bell, Henry, III, 1965, Geophysical investigations in the Con ___ 1971e, Aeromagnetic map of the Roxboro quadrangle, Person cord quadrangle, Cabarrus and Mecklenburg Counties, North Carolina: and Granville Counties, North Carolina: U.S. Geological Survey U.S. Geological Survey Geophysical Investigations Map GP-522, scale Geophysical InvestigationsMapGP-749, scale 1:62,500. 1:48,000. ___ 1973a, Aeromagnetic map of the Oxford quadrangle and part Carson Helicopters, Incorporated, 1980, National Uranium Resource Evalua of the Clarksville quadrangle, north-central North Carolina: U.S. tion aerial gamma-ray and magnetic reconnaissance survey of portions Geological Survey Geophysical Investigations Map GP-882, scale of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, 1:62,500. Pennsylvania, Virginia, and West Virginia [Chattanooga quadrangle] ___ 1973b, Aeromagnetic map of the northern parts of the Durham Final Report: U.S. Department of Energy Grand Junction Office [Report] North and Creedmore quadrangles, north-central North Carolina: GJBX92-80, v. 2, n.p., scale 1:500,000. U.S. Geological Survey Geophysical Investigations Map GP-883, Coastal Plains Regional Commission and U.S. Geological Survey, 1976a, scale 1:62,500. Aeromagnetic maps of parts of Georgia, South Carolina, and North ___ 1973c, Aeromagnetic map of the Henderson quadrangle and Carolina: U.S. Geological Survey Open-File Report 76-181, 13 pis., parts of the Louisburg and Boydton quadrangles, north-central scale 1:250,000. North Carolina: U.S. Geological Survey Geophysical Investigations ___ 1976b, Aeromagnetic map of parts of the Rocky Mount and MapGP-884, scale 1:62,500. Beaufort 1 o by 2° quadrangles, North Carolina: U.S. Geological Sur ___ 1973d, Aeromagnetic map of the Norlina quadrangle and parts vey Open-File Report76-815, scale 1:250,000. of the Castalia and South Hill quadrangles, north-central North Henderson, J. R., and Gilbert, F. P., 1966, Aeromagnetic map of the Carolina: U.S. Geological Survey Geophysical Investigations Map Mount Pleasant, Albemarle, Denton, and Salisbury quadrangles, GP-885, scale 1:62,500. west-central North Carolina: U.S. Geological Survey Geophysical ___ 1973e, Aeromagnetic map of the Essex-Roanoke Rapids area, InvestigationsMapGP-581, scale 1:62,500. northeastern North Carolina: U.S. Geological Survey Geophysical LKB Resources, Inc., 1979a, National Uranium Resource Evaluation ae InvestigationsMapGP-886, scale 1:62,500. rial gamma-ray and magnetic reconnaissance survey, Blue Ridge ___ 1974, Aeromagnetic map of parts of the Greensboro and area, Johnson City and Winston-Salem quadrangles-Final Report: Raleigh 1 o by 2° quadrangles, North Carolina: U.S. Geological Sur U.S. Department of Energy Grand Junction Office [Report] GJBX vey Open-File Report 7 4-29, scale 1:250,000. 16-79, v. 2, n.p., scale 1:500,000. ___ 1976, Aeromagnetic map of part of the Winston-Salem 1 o by LKB Resources, Inc., 1979b, National Uranium Resource Evaluation ae 2° quadrangle, North Carolina, Virginia, and Tennessee: U.S. rial gamma-ray and magnetic reconnaissance survey, Blue Ridge Geological Survey Open-File Report 76-534, scale 1:125,000. area, Knoxville and Charlotte quadrangles-Final Report: U.S. De ___ 1977a, Aeromagnetic map of north-central North Carolina: partment of Energy Grand Junction Office [Report] GJBX 57-79, v. U.S. Geological Survey Open-File Report77-192, scale 1:250,000. 2, n.p., scale 1:500,000. ___ 1977b, Aeromagnetic map of south-central North Carolina: U.S. Geological Survey, 1971a, Aeromagnetic map ofthe Danville quad U.S. Geological Survey Open-File Report 77-205, scale 1:250,000. rangle, Pittsylvania County, Virginia, and Caswell County, North ___ 1977c, Aeromagnetic map of Charlotte and vicinity, North Carolina: U.S. Geological Survey Geophysical Investigations Map Carolina: U.S. Geological Survey Open-File Report 77-723, scale GP-745, scale 1:62,500. 1:250,000. ___ 197lb, Aeromagnetic map of the Milton quadrangle, Halifax ___ 1977d, Aeromagnetic map of the northern North Carolina and Pittsylvania Counties, Virginia, and Caswell and Person Coun coast: U.S. Geological Survey Open-File Report 77-804, scale ties, North Carolina: U.S. Geological Survey Geophysical Investiga 1:250,000. tions Map GP-746, scale 1:62,500. ___ 1978a, Aeromagnetic map of Elizabethtown and vicinity, North ___ 1971c, Aeromagnetic map of the South Boston quadrangle, Carolina: U.S. Geological Survey Open-File Report 78-758, scale Halifax County, Virginia, and Person and Granville Counties, North 1:250,000. Carolina: U.S. Geological Survey Geophysical Investigations Map ___ 1978b, Aeromagnetic map of southeastern North Carolina: GP-747, scale 1:62,500. U.S. GeologicaiSurveyOpen-FileReport78-764, scale 1:250,000. ___ 1971d, Aeromagnetic map of the Winstead quadrangle, Person ___ 1978c, Aeromagnetic map of west Charlotte, North Carolina: and Caswell Counties, North Carolina: U.S. Geological Survey U.S. Geological Survey Open-File Report 78-1088, scale Geophysical Investigations Map GP-7 48, scale 1:62,500. 1:250,000.
38 103° 102" 101" 100" ggo NORTH DAKOTA
---.,----
0 50 100 MILES I I I I I,· I ~ I 'j I 0 50 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A East-West, 4000 feet barometric, 3 mile (USGS, 1981b) Geodata International, Inc., 1979a, National Uranium Resource Evalua B East-West, 15,000 feet barometric, 5 mile (Zietz and tion aerial radiometric and magnetic survey, Lemmon National To others, 1971) pographic Map, South Dakota-Final Report: U.S. Department of C East-West, 400 feet above ground, 3 mile (Geodata, 1979b) Energy Grand Junction Office [Report] GJBX 138-79, v. 2, n.p., D East-West, 400 feet above ground, 3 mile (Geodata, 1979a) scale 1:500,000. E East-West, 3500 feet barometric, 3 mile (USGS, 1981a) ___ 1979b, National Uranium Resource Evaluation aerial F East-West, 3000 feet above sea level, 1 mile (Aeroservice radiometric and magnetic survey, Dickinson National Topographic Corporation, unpublished data) Map, North Dakota-Final Report: U.S. Department of Energy G Total intensity ground magnetics, 3 mile (unpublished Grand Junction Office (Report] GJBX 139-79, v. 2, n.p., scale data 1:500,000. H Total intensity ground magnetics, 2 mile (Okland, 1978) Okland, H. D., 1978, A geomagnetic survey of Pembina, Grand Forks, East-West, 3500 feet barometric, 3 mile (USGS, 1981b) and eastern Walsh counties, North Dakota: Grand. Forks, North Dakota, University of North Dakota, M.S. thesis, 51 p., (unpub lished). U.S. Geological Survey, 1981a, Aeromagnetic map of part of the Bis marck 1 o by 2° quadrangle, North Dakota: U.S. Geological Survey Open-File Report 81-433, scale 1:250,000. ___ 1981b, Aeromagnetic map. of northeastern Montana and west ern North Dakota: U.S. Geological Survey Open-File Report 81- 434, scale 1:250,000. Zietz, Isidore, and others, 1971, Interpretation of an aeromagnetic strip across the northwestern United States: Geological Society of Ameri ca Bulletin, v. 82, no. 12, p. 3347-3371.
39 OHIO
81° ~ ~ l 84° ,. r--- --...... ,; 83° 82° E "\ / ~ "----; NO DATA
D ) ' I I B 4tr c
/ .._,/ I .J ,_,I I 39"
50 100 MILES ~,~·.~.·~,4;~~'--~·,~~~~~~~' 50 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A East-West, 6000 feet above sea level, 5 miles (Zietz and Patterson, R. L., 1980, Low-altitude aeromagnetic survey of south-central others, 1966) Ohio: Columbus, Ohio, The Ohio State University, M.S. Thesis (unpub B East-West, 500 feet above ground, 1 mile (Philbin and lished) others, 1965) Philbin, P. W., Long, C. L., and Moore, F. C., 1965, Aeromagnetic map of C East-West, 2000 feet barometric, 1% mile (USGS, 1980) the Columbus-Dayton area, Ohio and Indiana: U.S. Geological Survey D North-South, 500 feet above ground, 1 mile (Popenoe and Geophysical Investigations Map GP-491, scale 1:250,000. others, 1964) Popenoe, Peter, Petty, A. J., and Tyson, N. S., 1964, Aeromagnetic map of E unpublished ground magnetics western Pennsylvania and parts of eastern Ohio, northern West Virginia, F unknown (Patterson, 1980) and western Maryland: U.S. Geological Survey Geophysical Investiga tions Map GP-445, scale 1:250,000. U.S. Geological Survey, 1980, Aeromagnetic map of southeastern Ohio: U.S. Geological Survey Open-File Report 80-615, scale 1:250,000. Zietz, Isidore, and others, 1966, Crustal study of a continental strip from the Atlantic ocean to the Rocky Mountains: Geological Society of America Bulletin, v. 77, no., 12, p. 1427-1448, 2 pis.
40 OKLAHOMA
---ggo------p------·------ga• 96"--:----·--T I I c F I
I \ I 3SO l ! \ I \ I D G J \ I I I I I I I I ~ I E H K I
", --.1'\\ --~ -,r-_-- I J4•J... I 0 50 100 MILES I ~~~~~,,,L'rl~~~~-Li~'I-L'~~'I-Ji ''-v· <"~~., , __,-"- ../"'"" ' L 0 50 100 150 KILOMETERS - -v ,I......
SPECIFICATIONS A East-West, 400 feet above ground, 3 mile (Texas G East-West, 400 feet above ground, 3 mile (Geodata, 1976) Instruments, 1980) H East-West, 400 feet above ground, 3 mile (Texas B East-West, 400 feet above ground, 6 mile (Geodata, 1980a) Instruments, 1977) C East-West, 400 feet above ground, 6 mile (Geodata, 1980b) I East-West, 400 feet above ground, 3 mile (Texas D East-West, 400 feet above ground, 3 mile (Geodata, 1976) Instruments, 1978) E East-West, 400 feet above ground, 3 mile (Geodata, 1976) J East-West, 400 feet above ground, 6 mile (GeoMetries, 1980b) F East-West, 400 feet above ground, 3 mile (Texas K East-West, 400 feet above ground, 6 mile (Geodata, 1979) Instruments, 1978) L East-West, 400 feet above ground, 3 mile (GeoMetries, 1980a)
SOURCES OF DATA EG&G GeoMetries, 1980a, National Uranium Resource Evaluation ae ___ 1980b, National Uranium Resource Evaluation aerial rial gamma-ray and magnetic reconnaissance survey, Nebraska gamma-ray and magnetic reconnaissance survey, Woodward Texas project, Tyler, Texarkana, and Waco quadrangles of Texas, quadrangle, Oklahoma-Final Report: U.S. Department of En Oklahoma, Arkansas, and Louisiana-Final Report: U.S. Depart ergy Grand Junction Office [Report] GJBX 251-80, v. 2, n.p., ment of Energy Grand Junction Office [Report] GJBX 69-80, v. scale 1:500,000. 2, n.p., scale 1:500,000. Texas Instruments, Inc., 1977, National Uranium Resource Evalua ___ 1980b, National Uranium Resource Evaluation aerial tion aerial gamma-ray and magnetic reconnaissance survey, gamma-ray and magnetic reconnaissance survey, Fort Smith Red River Area, Block C [Ardmore and Sherman quadrang quadrangle, Oklahoma and Arkansas-Final Report: U.S. De les]-Final Report: U.S. Department of Energy Grand Junction partment of Energy Grand Junction Office [Report] GJBX Office [Report] GJBX 17-77, v. 2, n.p., scale 1:500,000. 200-80, v. 2, n.p., scale 1:500,000. ___ 1978, National Uranium Resource Evaluation aerial Geodata International, Inc., 1976, National Uranium Resource gamma-ray and magnetic reconnaissance survey, Great Plains Evaluation aerial radiometric and magnetic survey [of the (D) [Tulsa and Enid quadrangles]-Final Report: U.S. Department Clinton, (E) Lawton, and (G) Oklahoma City quadrangles, Ok of Energy Grand Junction Office [Report] GJBX 100-78, v. 2, lahoma and Texas]-Final Report: U.S. Department of Energy n.p., scale 1:500,000. Grand Junction Office [Report] GJBX 34-76, v. 2, n.p., scale ___ 1980, National Uranium Resource Evaluation aerial 1:500,000. gamma-ray and magnetic reconnaissance survey of portions of ___ 1979, National Uranium Resource Evaluation aerial New Mexico, Oklahoma, and Texas [Dalhart quadrangle] gamma-ray and magnetic reconnaissance survey, McAlester Final Report: U.S. Department of Energy Grand Junction Of National Topographic Map, Arkansas and Oklahoma-Final fice [Report] GJBX 46-80, v. 2, n.p., scale 1:500,000. Report: U.S. Department of Energy Grand Junction Office [Re port] GJBX 174-79, v. 2, n.p., scale 1:500,000. ___ 1980a, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey, Perryton quadrangle Texas and Oklahoma-Final Report: U.S. Depart ment of Energy Grand Junction Office [Report] GJBX 229-80, v. 2, n.p., scale 1:500,000.
41 OREGON SOURCES OF DATA Balsley, J. R., Bromery, R. W., Remington, E. W., and others, 1960 Aeromagnetic map of the Kerby and part of the Grants Pass quad rangles, Josephine and Curry Counties, Oregon: U.S. Geological Sur vey Geophysical Investigations Map GP-197, scale 1:96,000. Bromery, R. W., 1962, Geologic interpretation of the aeromagnetic map of the Lebanon quadrangle, Linn and Marion Counties, Oregon: U.S. Geological Survey Geophysical Investigations Map GP-212, scale 1:62,500. ___ 1965, Aeromagnetic map of the Albany-Newport area, Ore gon and its geologic interpretation: U.S. Geological Survey Geophysical Investigations Map _GP-481, scale 1:62,500. . Bromery, R. W., and Snavely, P. D., Jr., 1964, Geologic interpretation of reconnaissance gravity and aeromagnetic surveys in northwest ern Oregon: U.S. Geological Survey Bulletin 1181-N, 13 p., 3 pis. Couch, R., and others, 1978a, Geophysical investigations of the Cas cade Range in central Oregon: Corvallis, Oregon, Oregon State University Geophysics Group Technical Report #4, 138 p., 3 pis. ___ 1978b, Geophysical investigations of the Vale-Owyhee geothermal region, Malheur County, Oregon: Corvallis Oregon, Oregon State University Geophysics Group Technical Report #4, 133 p., 3 pis. Couch, R., Gemperle, M., and Connard, G., 1978c, Total field aeromagnetic anomaly map, Cascade Mountain Range, central Oregon: Oregon Geological Survey Geological Map Series GMS- 9, 2 sheets, scale 1:125,000. EG&G GeoMetries, Inc., 1980, National Uranium Resource Evaluation aerial gamma-ray and magnetic survey, Idaho project, Hailey, Idaho Falls, Elk City quadrangles, Idaho/Montana, and Boise 50 100 MILES quadrangle, Oregon/Idaho-Final Report: U.S. Department of En ergy Grand Junction Office [Report] GJBX 10-80, v. 2, n.p., scale 50 100 1:500,000. Geo-Life (A joint venture between High-Life. Helicopters, Inc. and Geodata International Inc.), 1978, National Uranium Resource Evaluation aerial radiometric and magnetic survey, Baker National SPECIFICATIONS Topographic Map, Idaho and Oregon-Final Report: U.S. Depart ment of Energy Grand Junction Office [Report] GJBX 101-78, v. A Northeast-Southwest, 1000 feet above mean terrain, 0.5 mile 2, n.p., scale 1:500,000. (United Engineers and Constructors, Inc., 1978) Lockwood, Kessler, and Bartlett, Inc., [ 1968?], Aeromagnetic survey B East-West, 15,000 feet barometric, 5 mile (Zietz and composite map, Oregon coast: Syosset, N. Y., and Pasadena, others, 1971) Cal., Lockwood, Kessler, and Bartlett, Inc., scale 1:250,000, (pre C East-West, 7000 feet barometric, 1 mile (USGS, 1977b) pared for U.S. Geological Survey, Heavy Minerals Project). D East-West, 14,000 feet barometric, 1 mile (USGS, 1977b) United Engineers and Constructors, Inc., 1978, Qualitative E East-West, 7000 feet barometric, 1 mile (USGS, 1977a) aeromagnetic evaluation of structures in the Columbia Plateau F East-West, 4000 feet barometric, 3 to 18 mile (Bromery and and adjacent Cascade Mountain area: Westboro, Mass., Weston Snavely, 1964) Geophysical Research Inc., 32 p. 31 figs., 2 pis. G East-West, 1000 feet above ground, 0.5 mile (Bromery, 1965) U.S. Geological Survey, 1972a, Aeromagnetic map of the Adel and H East-West, 750 feet above ground, 0.5 mile (Bromery, 1962) parts of the Burns, Boise, and Jordan Valley 1 o by 2° quadrangles, I East-West, 3500 feet above sea level, 2 mile (Lockwood, Oregon: U.S. Geological Survey Open-File Report, scale Kessler, and Bartlett, Inc., [1968?]) 1:250,000. J East-West, 4500 feet barometric, 1 mile (USGS, 1979) ___ 1972b, Aeromagnetic map of the Klamath Falls and part of K East-West, 6500 feet barometric, 1 mile (USGS, 1979) the Crescent 1 o by 2o quadrangles, Oregon: U.S. Geological Sur L East-West, 4500 feet barometric, 0.5 mile (Balsley and vey Open-File Report, scale 1:250,000. others, 1960) ___ 1973, Aeromagnetic map of parts of the Coos Bay and Med M East-West, 9000 feet above sea level, 2 mile (USGS, 1973) ford 1 o by 2o quadrangles, southwestern Oregon: U.S. Geological N Northeast-Southwest, 6500 feet barometric, 1 mile Survey Open-File Report, scale 1:250,000. (unpublished data) ___ 1977a, Aeromagnetic map of Breitenbush Hot Springs and 0 East-West, 9000 feet above sea level, 1 mile (Couch and vicinity, Oregon: U.S. Geological Survey Open-File Report 77- others, 1978a, c) 820, scale 1:62,500. P East-West,11,000 feet above sea level, 1 mile (Couch and ___ 1977b, Aeromagnetic map of Mt. Hood and vicinity, Oregon: others, 1978a, c) U.S. Geological Survey Open-File Report 77-819, 2 sheets, scale Q East-West, 9000 feet barometric, 2 mile (USGS, 1972b) 1:62,500. R East-West, 9000 feet barometric, 2 mile (USGS, 1972a) ___ 1979, Aeromagnetic map of the Medford area, Oregon: U.S. S East-West, 7000 feet above sea level, 1 mile (Couch and Geological Survey Open-File Report 79-1195, scale 1:250,000. others, 1978b) Zietz, Isidore, and others, 1971, Interpretation of an aeromagnetic T East-West, 5000 feet above sea level, 1 mile (Couch and strip across the northwestern United States: Geological Society of others, 1978b) America Bulletin, v. 82, no. 12, p. 3347-3372. U East-West, 400 feet above ground, 3 mile (Geo-Life, 1978) V East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, Inc., 1980)
42 SOUTH CAROLINA 82"------,81. 83"... /A B 80"
c
'
50 100 MILES
SPECIFICATIONS SOURCES OF DATA A East-West, 400 feet above ground, 3 mile (LKB Resources, 1979) LKB Resources, Inc., 1979, National Uranium Resource Evaluation aerial B East-West, 500 feet above ground, 1 mile (USGS, 1977) gamma-ray and magnetic reconnaissance survey, Blue Ridge area, C East-West, 500 feet above ground, 1 mile (Riggle and Knoxville and Charlotte quadrangles-Final Report: U.S. Department others, 1980) of Energy Grand Junction Office [Report] GJBX 57-79, v. 2, n.p., D East-West, 400 feet above ground,% mile (USGS, 1970) scale 1:500,000. E East-West, 500 feet above ground, 1 mile (Tyson and Petty, A. J., Petrafeso, F. A., and Moore, F. C., Jr., 1965, Aeromagnetic others, 1980) map of the Savannah River Plant area, South Carolina and Georgia: F Northwest-Southeast, 500 feet above ground, 1 mile (Petty U.S. Geological Survey Geophysical Investigations Map GP-489, and others, 1965) scale 1:250,000. G East-West, 500 feet above ground, 1 mile (USGS, 1976a) Riggle, F. E., Zietz, Isidore, and Daniels, D. L., 1980, Aeromagnetic map H North-South, 500 feet above ground, 1 mile (USGS, 1975) of northwest South Carolina: U.S. Geological Survey Open-File Re I East-West, 500 feet above ground, 1 mile (USGS, 1976b) port 80-1240, 2 sheets, scale 1:250,000. Tyson, N. S., Riggle, F. E., Zietz, Isidore, and Daniels, D. L., 1980, Aeromagnetic map of northeast South Carolina: U.S. Geological Sur vey Open-File Report 80-2020, scale 1:250,000. U.S. Geological Survey, 1970, Aeromagnetic map of the Camden-Kershaw area, north-central South Carolina: U.S. Geological Survey Open-File Report, 4 sheets, scale 1:24,000. ___ 1975, Aeromagnetic map of Charleston and vicinity, South Carolina: U.S. Geological Survey Open-File Report 75-590 scale 1:250,000. ___ 1976a, Aeromagnetic maps of parts of Georgia, South Carolina, and North Carolina: U.S. Geological Survey Open-File Report 76-181 13 sheets, scale 1:250,000. ___ 1976b, Aeromagnetic map of parts of the Brunswick and Savannah 1 o by 2° quadrangles, Georgia and South Carolina: U.S. Geological Survey Open-File Report 76-155, scale 1:250,000. ___ 1977, Aeromagnetic map of Spartanburg and vicinity, South Carolina: U.S. Geological Survey Open-File Report 77-252, scale 1:250,000.
43 SOUTH DAKOTA 104° 46° 101° 1000 9 1---- - f-- I ------~------I F T--- I B / l I \ I c I I G "' I B so I l I I I I I A J I D \ I I F I I 44 l I I I I I \ E I I - ( I l I J_ '4 -----1 ------f------"" I ...... ----, ~ .. I '-t-- I \ 50 100 MILES \ \ ~ 50 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, EG&G GeoMetries, 1979, National Uranium Resource Evaluation aerial 1980) gamma-ray and magnetic survey, Idaho project, Rapid City quadrangle, B East-West, 400 feet above ground, 3 mile (Geodata, 1979) South Dakota-Final Report: U.S. Department of Energy Grand Junc C Vertical intensity ground magnetics, 1 mile spacing (Mobil tion Office [Report] GJBX 83-80, v. 2, n.p., scale 1:500,000. Oil Company, unpublished data) ___ 1980, National Uranium Resource Evaluation aerial gamma D East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, ray and magnetic survey, Powder River II project, Newcastle and 1979) Gillette quadrangles, Wyoming and South Dakota, Ekalaka quad E East-West, 400 feet above ground, 3 mile (Texas rangle, Montana-Final Report: U.S. Department of Energy Grand Instruments, 1979) Junction Office [Report] GJBX 82-79, v. 2, n.p., scale 1:500,000. F Vertical intensity ground magnetics, 4-6 mile (Petsch, 1967) Geodata International, Inc., 1979, National Uranium Resource Evalua G East-West, 3000 feet above sea level, 6 mile (Aeroservice tion aerial gamma-ray and magnetic survey, Lemmon National To Corporation, unpublished data) pographic Map, South Dakota-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 138-79, v. 2, n.p., scale 1:500,000. Petsch, B. C., 1967, Vertical intensity magnetic map of South Dakota, in Magnetometer map of South Dakota: South Dakota Geological Survey Mineral Resource Investigations Map No. 4, scale 1:750,000. Texas Instruments, Inc., 1979, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey of portions of Arizona, Idaho, Montana, New Mexico, South Dakota, and Washington, Hot Springs quadrangle-Final Report: U.S. Depart ment of Energy Grand Junction Office [Report] GJBX 126-79, v. 2, n.p., scale 1:500,000.
44 TENNESSEE
88° 86° 840 89"------
c D 8
50 100 MILES 1 1 1 I I I I 1 1 I j I 50 100 150 KILOMETERS
SPECIFICATIONS SOURCES OF DATA All surveys flown in an east-west direction with altitude and Carson Helicopters, Inc., 1980, National Uranium Resource Evalua spacing as shown below. tion aerial gamma-ray and magnetic reconnaissance survey of por A 1500 feet constant barometric altitude, 1 mile (USGS, 1974) tions of Alabama, Georgia, Kentucky, Maryland, North Carolina, B 1500 feet constant barometric altitude, 1 mile (Johnson and Ohio, Pennsylvania, Virginia and West Virginia (Chattanooga others, 1979) quadrangle)-Final Report: U.S. Department of Energy Grand C 1000 feet above ground, 1 mile (Johnson and others, 1979) Junction Office [Report] GJBX 92-80, v. 2J, n.p., scale D 2500 feet above mean sea lev~l, 1 mile (Johnson and others, 1:500,000. 1979) Johnson, R. W., Haygood, C., and Kunselman, P. M., 1979, E 3500 feet above mean sea level, 2 mile (Johnson and others, Aeromagnetic map of Tennessee, Tennessee Division of Geology, 1979) 4 sheets, scale 1:250,000. F 3500 feet above mean sea level, 1 mile (Johnson and others, LKB Resources, Inc., 1979a, National Uranium Resource Evaluation 1979) aerial gamma-ray and magnetic reconnaissance survey of the Blue G 400 feet above ground, 6 miles (Carson Helicopters, Inc., 1980) Ridge Area, Johnson City and Winston-Salem quadrangles-Final H 3500 feet above mean sea level, 2 mile (Johnson and others, Report: U.S. Department of Energy Grand Junction Office [Re 1979) port] GJBX 16-79, v. 2, n.p., scale 1:500,000. I 400 feet above ground, 3 mile (LKB Resources, Inc., 1979b) ___ 1979b, National Uranium Resource Evaluation aerial J 400 feet above ground, 3 mile (LKB Resources, Inc., 1979a) gamma-ray and magnetic reconnaissance survey of the Blue Ridge Area, Knoxville and Charlotte quadrangles-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 57- 79, v. 2, n.p., scale 1:500,000. U.S. Geological Survey, 1974, Aeromagnetic map of the New Madrid region, Missouri-Kentucky-Arkansas-Tennessee: U.S. Geological Survey Open-File Report 74-360, scale 1:125,000.
45 TEXAS
102° 100" ~~-~--~--l
36° I I I E I 35ot'r---+---+----l-l
G N
200 MILES
100 zoo 300 KILOMETERS
SPECIFICATIONS A East-West, 400 feet above ground, 3 mile (EG&G Geometries, Q East-West, 400 feet above ground, 3 mile (Geodata, 1980a) 1978) R East-West, 400 feet above ground, 3 mile (Geodata, 1980d) B East-West, 400 feet above ground, 3 mile (LKB Resources, S East-West, 400 feet above ground, 3 mile (Geodata, 1979c) 1979) T East-West, 400 feet above ground, 3 mile (Geodata, 1979d) C East-West, 400 feet above ground, 3 mile (Texas U East-West, 400 feet above ground, 3 mile (Geodata, 1978b) Instruments, 1980c) V East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, D East-West, 400 feet above ground, 6 mile (Geodata, 1980h) 1980a) E East-West, 400 feet above ground, 3 mile (Geodata, 1976a) w East-West, 400 feet above ground, 3 mile (Geodata, 1979e) F Unpublished data X Ground magnetic data (Gulf Oil Company, unpublished data) G Vertical intensity ground magnetic data (Chevron Oil y North-South, 1000 feet above ground, 2 mile (USGS, 1974) Company, unpublished data) z Specifications unknown (unpublished data) H East-West, 400 feet above ground, 3 mile (Geodata, 1980g) AA East-West, 400 feet above ground, 3 mile (Geodata, 1979b) I East-West, 400 feet above ground, 3 mile (Geodata, 1980f) BB East-West, 400 feet above ground, 3 mile (Texas J East-West, 400 feet above ground, 3 mile (Geodata, 1980e) Instruments, 1980b) K East-West, 400 feet above ground, 3 mile (Geodata, 1980i) cc E~st-West, 400 feet above ground, 3 mile (Texas L East-West, 400 feet above ground, 3 mile (Geodata, 1980b) Instruments, 1980a) M East-West, 400 feet above ground, 3 mile (Geodata, 1980c) DD East-West, 400 feet above ground, 3 mile (Geodata, 1978a) N East-West, 400 feet above ground, 3 mile (Geodata, 1976b) EE East-West, 400 feet above ground, 6 mile (EG&G GeoMetries 0 East-West, 400 feet above ground, 3 mile (Texas 1980b) Instruments, 1977) FF East-West, 400 feet above ground, 6 mile (EG&G GeoMetries P East-West, 400 feet above ground, 3 mile (Geodata, 1979a) 1980c)
46 SOURCES OF DATA EG&G GeoMetries, 1978, National Uranium Resource Evaluation aerial ___ 1980a, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey, Big Bend area [Van radiometric and magnetic survey, Llano National Topographic Map, Hom and Pecos quadrangles] -Final Report: U.S. Department of En Texas-Final Report: U.S. Department of Energy Grand Junction ergy Grand Junction Office [Report] GJBX 2-78, v. 2, n.p., scale Office [Report] GJBX24-80, v. 2, n.p., scale 1:500,000. 1:500,000. ___ 1980b, National Uranium Resource Evaluation aerial ___ 1980a, National Uranium Resource Evaluation aerial radiometric and magnetic survey, Del Rio, Texas-Final Report: gamma-ray and magnetic reconnaissance survey, Nebraska-Texas U.S. Department of Energy Grand Junction Office [Report] GJBX project, Tyler, Texarkana, and Waco quadrangles of Texas, Ok 156--80, v. 2, n.p., scale 1:500,000. lahoma, Arkansas, and Louisiana-Final Report: U.S. Department ___ 1980c, National Uranium Resource Evaluation aerial of Energy Grand Junction Office [Report] GJBX 69-80, v. 2, n.p., radiometric and magnetic survey, Eagle Pass, Texas-Final Report: scale 1:500,000. U.S. Department of Energy Grand Junction Office [Report] GJBX ___ 1980b, National Uranium Resource Evaluation aerial 157--80, v. 2, n.p., scale 1:500,000. gamma-ray and magnetic reconnaissance survey, Alexandria ___ 1980d, National Uranium Resource Evaluation aerial quadrangle, Louisiana and Texas-Final Report: U.S. Department radiometric and magnetic survey, San Antonio, Texas-Final Re of Energy Grand Junction Office [Report] GJBX 152-80, v. 2, port: U.S. Department of Energy Grand Junction Office [Report] n.p., scale 1:500,000. GJBX 160--80, v. 2, n.p.,scale 1:500,000. ___ 1980c, National Uranium Resource Evaluation aerial ___ 1980e, National Uranium Resource Evaluation aerial gamma-ray and magnetic reconnaissance survey of Lake Charles radiometric and magnetic survey, San Angelo, Texas-Final Report: and Port Arthur quadrangles, Texas and Louisiana-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX U.S. Department of Energy Grand Junction Office [Report] GJBX 168--80, v. 2, n. p., scale 1:500,000. 224-80, v. 2, n.p., scale 1:500,000. ___ 1980f, National Uranium Resource Evaluation aerial radiomet Geodata International, Inc., 1976a, National Uranium Resource ric and magnetic survey, Big Spring, Texas-Final Report: U.S. De Evaluation aerial radiometric and magnetic survey [Tucumcari, partment of Energy Grand Junction Office [Report] GJBX 196-80, Clovis, Brownfield, and Amarillo quadrangles]-Final Report: v. 2, n.p., scale 1:500,000. U.S. Department of Energy Grand Junction Office [Report] GJBX ___ 1980g, National Uranium Resource Evaluation aerial 33-76, v. 2, n.p., scale 1:500,000. radiometric and magnetic survey, Hobbs National Topographic ___ 1976b, National Uranium Resource Evaluation aerial Map, TexasandNewMexico-FinalReport: U.S. DepartmentofEn radiometric and magnetic survey [Lawton and Wichita Falls quad ergy Grand Junction Office [Report] GJBX 228-80, v. 2, n.p., scale rangles] -Final Report: U.S. Department of Energy Grand Junc 1:500,000. tion Office [Report] GJBX 34-76, v. 2, n.p., scale 1:500,000. ___ 1980h, National Uranium Resource Evaluation aerial ___ 1978a, National Uranium Resource Evaluation aerial radiometric and magnetic survey, Perryton [quadrangle], Texas and radiometric and magnetic survey, Houston National Topographic Oklahoma-Final Report: U.S. Department of Energy Grand Junc Map, Texas Gulf Coast-Final Report: U.S. Department of Energy tion Office [Report] GJBX229-80, v. 2, n.p., scale 1:500,000. Grand Junction Office [Report] GJBX 102-78, v. 2, n.p., scale ___ 1980i, National Uranium Resource Evaluation aerial radiomet 1:500,000. ric and magnetic survey, Sonora National Topographic Map, ___ 1978b, National Uranium Resource Evaluation aerial Texas-Final Report: U.S. Department of Energy Grand Junction radiometric and magnetic survey, Brownsville/McAllen National Office [Report] GJBX245-80, v. 2, n.p., scale 1:500,000. Topographic Map, Texas Gulf Coast-Final Report: U.S. Depart LKB Resources, Inc., 1979, National Uranium Resource Evaluation ae ment of Energy Grano Junction Office [Report] GJBX 117-78, v. rial gamma-ray and magnetic reconnaissance survey, Big Bend Area, 2, n.p., scale 1:500,000. Marfa, Presidio, Fort Stockton, and Emory Peak quadrangles-Final ___ 1979a, National Uranium Resource Evaluation aerial Report: U.S. Department of Energy Grand Junction Office [Report] radiometric and magnetic survey, Brownwood National Topog GJBX88-79, v. 2, n.p., scale 1:500,000. raphic Map, Texas Gulf Coast-Final Report: U.S. Department of Texas Instruments, Incorporated, 1977, National Uranium Resource Energy Grand Junction Office [Report] GJBX 68-79, v. 2, n.p., Evaluation aerial gamma-ray and magnetic reconnaissance survey, scale 1:500,000. Red River area -Block C [Abilene, Sherman, and Dallas quadrang ___ 1979b, National Uranium Resource Evaluation aerial les]-Final Report: U.S. Department of Energy Grand Junction Of radiometric and magnetic survey, Beeville/Bay City National To fice [Report] GJBX 17-77, v. 2, n.p., scale 1:500,000. pographic Map, Texas Gulf Coast-Final Report: U.S. Department ___ 1980a, National Uranium Resource Evaluation aerial gamma of Energy Grand Junction Office [Report] GJBX 69-79, v. 2, n.p., ray and magnetic reconnaissance survey of a portion of Texas, scale 1:500,000. Beaumont a·nd Palestine quadrangles-Final Report: U.S. Depart ___ 1979c, National Uranium Resource Evaluation aerial ment of Energy Grand Junction Office [Report] GJBX 44-80, v. 2, radiometric and magnetic survey, Crystal City National Topog n.p., scale 1:500,000. raphic Map, Texas Gulf Coast-Final Report: U.S. Department of ___ 1980b, National Uranium Resource Evaluation aerial gamma Energy Grand Junction Office [Report] GJBX 98-79, v. 2, n.p., ray and magnetic reconnaissance survey of portions of Texas [Pales scale 1:500,000. tine quadrangle]-Final Report: U.S. Department of Energy Grand ___ 1979d, National Uranium Resource Evaluation aerial Junction Office [Report] GJBX45-80, v. 2, n.p., scale 1:500,000. radiometric and magnetic survey, Corpus Christi/Laredo National ___ 1980c, National Uranium Resource Evaluation aerial gamma Topographic Map, Texas Gulf Coast-Final Report: U.S. Depart ray and magnetic reconnaissance survey of portions of New Mexico, ment of Energy Grand Junction Office [Report] GJBX 99-79, v. Oklahoma, and Texas [Dalhart quadrangle]-Final Report: U.S. De 2, n.p., scale 1:500,000. partment of Energy Grand Junction Office [Report] GJBX 46-80, v. ___ 1979e, National Uranium Resource Evaluation aerial 2, n.p., scale 1:500,000. radiometric and magnetic survey, Austin National Topographic U.S. Geological Survey, 1974, Aeromagnetic map of part of the Texas Map, Texas Gulf Coast-Final Report: U.S. Department of Energy coastal plain: U.S. Geological Survey Open-File Report 74-100, Grand Junction Office [Report] GJBX 148-79, v. 2, n.p., scale scale 1:250,000. 1:500,000.
47 UTAH
42" 1J40 ____ 113°.J. ____ _ 112" 111° SOURCES OF DATA Byerly, P. E., andJoesting, H. R., 1959, Regional geophysical investiga tions of the Lisbon Valley area, Utah and Colorado: U.S. Geological SurveyProfessionalPaper316-C, p. 39-50, scale 1:125,000. J Case, J. E., and Joesting, H. R., 1972, Regional geophysical investiga tions in the central Colorado Plateau: U.S. Geological Survey Pro 41°--Jt------1---.....--+---.....---4-- fessiona1Paper736, 31 p., 3pls.; scale 1:125,000. Case, J. E., Joesting, H. R., and Byerly, P. E., 1963, Regional geophysical investigations in the La Sal Mountains area, Utah and Colorado: U.S. Geological Survey Professional Paper 316-F, p. 91-116, scale 1:125,000. Crittenden, M.D., Jr., Wallace, C. A., and Sheridan, M. J., 1967, Mineral resources of the High Uintas primitive area, Utah: U.S. Geological Survey Bulletin 1230-1, 27p., 1 pl. Geo-Life (A joint venture between High Life Helicopters, Inc., and Geodata International, Inc.), 1979, National Uranium Resource Evaluation aerial radiometric and magnetic survey, Vernal National Topographic Map, Colorado and Utah-Final Report: U.S. Depart ment of Energy Grand Junction Office [Report] GJBX 167-79, v. 2, n.p., scale 1:500,000. Mabey, D. R., Crittenden, M.D., Jr., Morris, H. T., Roberts, R. J., and Tooker, E. W., 1964, Aeromagnetic and generalized geologic map of part of north-central Utah: U.S. Geological Survey Geophysical Investigations Map GP-422, scale 1:250,000. Steenland, N. C., 1969, An aeromagnetic survey of the Uinta Mountains, in Intermountain Association of Geologists (and Utah Geological So ciety), 16th Annual Field Conference, Salt Lake City, Utah, 1969, Geologic guidebook of the Uinta Mountains, Utah's maverick range: Utah Geological Survey, p. 47-51. U.S. Geological Survey, 1966, Aeromagnetic map ofthe San Francisco Mountains and vicinity, southwestern Utah: U.S. Geological Survey Geophysical Investigations Map GP-598, scale 1:62,500. ___ 1971, Aeromagnetic map of part of west-central Utah: U.S. Geological Survey Open-File Report, scale 1:250,000. ___ 1972a, Aeromagnetic map of parts of the Delta and Richfield 0 50 100 MILES 1" by 2° quadrangles, Utah: U.S. Geological Survey Open-File Re I I ,,., •' I 'I I 'I I I 0 50 100 150 KILOMETERS port, scale 1:250,000. ___ 1972b, Aeromagnetic map of parts of the Richfield and Cedar City 1 o by 2° quadrangles, Utah: U.S. Geological Survey Open-File Report, scale 1:250,000. Zietz, Isidore, Shuey, Ralph, and Kirby, John R., 1976, Aeromagnetic SPECIFICATIONS map of Utah: U.S. Geological Survey Geophysical Investigations A East-West, 8500 feet barometric, 1 mile (Case and Map GP-907, scale 1:1,000,000. Joesting, 1972) B East-West, 9000 feet barometric, 1 mile (USGS, 1971) c East-West, 9000 feet barometric, 1 mile (USGS, 1966) D East-West, 12,500 feet barometric, 1 mile (Case and Joesting, 1972) E East-West, 11,500 feet barometric, 1 mile (Case and Joesting, 1972) F East-West, 12,500 feet barometric, 1 mile (Case and others, 1963) G East-West, 500 feet above ground, 2 mile (Byerly and Joesting, 1959) H East-West, 11,000 feet barometric, 2 mile (Crittenden and others, 1967) I East-West, 12,000 feet barometric, 2 mile (Mabey and others, 1964) J North-South, 12,000 feet barometric, 5 mile (Zietz and others, 1976) K North-South, 8500 feet barometric, 2 to 4 mile (G. K. Eppich, R. T. Shuey, D. K. Schellinger, and L. B. Alley, between 1971 and 1974, Zietz and others, 1976) L North-South, 12,000 feet barometric, 2 to 4 mile (L. B. Alley and R. T. Shuey, between 1971 and 1974, Zietz and others, 1976) M East-West, 9000 feet barometric, 2 mile (USGS, 1972a) N East-West, 9000 feet barometric, 2 mile (USGS, 1972b) 0 North-South, 14,000 feet barometric, 2 mile (Steenland, 1969) p East-West, 400 feet above ground, 3 mile (Geo-Life, 1979) Q East-West, 15,000 feet barometric, individual flight lines (unpublished data) 48 )I VIRGINIA , WEST VIRGINIA )I 4tt(t A , 80" 81° --
~....._/ B 82" .I 3~~~------~------+------+-~~~--+-----~
50 100 MILES r-~.--r--~r-~--~--~--~--~--Lo~ 50 100 150 KILOMETERS
SPECIFICATIONS A North-South, 1000 feet above ground, 1 mile (USGS, 1976) I East-West, 500 feet above ground,% mile (Virginia Division B Northwest-Southeast, 1000 feet above ground, 1 mile of Mineral Resources, 1970) · (USGS, 1976) J East-West, 500 feet above ground, % mile (Virginia Division C Northwest-Southeast, 1000 feet above ground, 1 mile of Mineral Resources, 1969) (USGS, 1974b) K East-West, 400 feet above ground, 1/2 mile (USGS, 1971a, b, c) D Northwest-Southeast, 1000 feet above ground, 1 mile L East-West, 500 feet above ground, % mile (Virginia Division (USGS, 1974a) of Mineral Resources, 1971) E Northwest-Southeast, 5000 feet above sea level, 11/2 mile M East-West, 500 feet above ground, % mile (USGS, (Virginia Division of Mineral Resources, 1962) unpublished data) F Northwest-Southeast, 5000 feet above sea level, 3 mile N East-West, 500 feet above ground, % mile (Bromery and (Virgina Division of Mineral Resources, 1972) others, 1963a, b) G East-West, 500 feet above ground, % mile (Virginia Division 0 East-West, 500 feet above ground,% mile (Neuschel, 1970) of Mineral Resources, 1972) · P East-West, 500 feet above ground, 2 mile (USGS, 1972) H East-West, 500 feet above ground, % mile (Virginia Division of Mineral Resources, 1966)
49 SOURCES OF DATA Bromery, R. W., Galat, G. H., and Chandler, E. J., 1963a, Aeromagnetic ___ 1972, Aeromagnetic map of southeastern Virginia: U.S. map of the Joplin quadrangle, Prince William and Stafford Counties, Geological Survey Open-File Report, scale 1:250,000. Virginia: U.S. Geological Survey Geophysical Investigations Map ___ 1974a, Aeromagnetic map of the southern part of West Vir GP-390, scale 1:24,000. ginia: U.S. Geological Survey Open-File Report 74-47, scale ___ 1963b, Aeromagnetic map of the Quantico quadrangle, Prince 1:250,000. William and Stafford Counties, Virginia: U.S. Geological Survey ___ 1974b, Aeromagnetic map of the central part of West Virginia: Geophysical Investigations Map GP-391, scale 1:24,000. U.S. Geological Survey Open -File Report 7 4-33 7, scale 1:250,000. Neuschel, S. K., 1970, Correlation of aeromagr.etics and aeroradioactiv ___ 1976, Aeromagnetic map of the northern part of West Virginia: ity with lithology in the Spotsylvania area, Virginia: Geological Soci U.S. GeologicalSurveyOpen-FileReport76-780, scale 1:250,000. etyofAmericaBulletin, v. 81, no.12, p. 3575-82. Virginia Division of Mineral Resources, 1962, Composite aeromagnetic U.S. Geological Survey, 1971a, Aeromagnetic map of the Danville quad map of Southwestern Virginia: Charlottesville, Virginia, scale rangle, Pittsylvania County, Virginia, and Caswell County, North 1:250,000. Carolina: U.S. Geological Survey Geophysical Investigations Map ___ 1966, Magnetic and radiometric data, southwest Piedmont of GP-745, scale 1:62.500. Virginia: Information Circular 12, scale 1:62,500. ___ 1971b, Aeromagnetic map of the Milton quadrangle, Halifax ___ 1969, Composite aeromagnetic map of the south-central Pied and Pittsylvania Counties, Virginia, and Caswell and Person Coun mont, Virginia: Charlottesville, Virginia, scale 1:250,000. ties, North Carolina: U.S. Geological Survey Geophysical Investiga ___ 1970, Composite aeromagnetic map of the Roanoke quad tions Map GP-746, scale 1:62,500. rangle, Virginia: Charlottesville, Virginia, scale 1:250,000. ___ 1971c, Aeromagnetic map of the South Boston quadrangle, ___ 1971, Composite aeromagnetic map of the Piedmont area, Vir Halifax County, Virginia and Person and Granville Counties, North ginia: Charlottesville, Virginia, scale 1:250,000. Carolina: U.S. Geological Survey Geophysical Investigations Map ___ 1972, Composite aeromagnetic map of western Virginia: Char GP-747, scale 1:62,500. lottesville, Virginia, 2 sheets, scale 1:250,000.
50 WASHINGTON
121° 120° 119° 118° I -..l---, GG HH
H
II
KK LL
K I --'-- K __ 1 117°
I \ ----..__, _./"-- ...... __- _.. I
0 50 100 MILES I I I I I II 50 100 1~0 KILOMETERS
SPECIFICATIONS
A North-South, 300 meters above sea level, 1.2 kilometers u East-West, 1000 feet above ground, 0.5 mile (Henderson (Geological Survey of Canada, 1979a) and others, 1958n) B North-South, 300 meters above sea level, 1.2 kilometers v East-West, 1000 feet above ground, 0.5 mile (Henderson (Geological Survey of Canada, 1979b) and others, 1958k) c East-West, 3000 feet barometric, 2 mile (USGS, 1978) w East-West, 1000 feet above ground, 0.5 mile (Henderson D East-West, 7000 feet barometric, 1 mile (Thompson, 1973) and others, 1958e) E North-South, 3000 feet barometric, 2 mile (USGS, 1977a) X East-West, 1000 feet above ground, 0.5 mile (Henderson F North-South, 3000 feet barometric, 1 mile (USGS, 1974a) and others, 1958g) G North-South, 4200 feet above sea level, 2 mile (USGS, 1980d) y East-West, 1000 feet above ground, 0.5 mile (Henderson H East-West, 500 feet above sea level, 2 mile (USGS, 1980a) and others, 1958b) I East-West, 2500 feet above sea level, 2 mile (USGS, 1980c) z North-South, 8000 feet barometric, 1 mile (Simmons and J East-West, 2500 feet above sea level, 2 mile (USGS, 1980b) others, 1974) K East-West, 15,000 feet barometric, 5 mile (Zietz and AA Northeast-Southwest, 1000 feet above mean terrain, 0.5 others, 1971) mile (United Engineers and Constructors, Inc., 1978) L East-West, 1000 feet above ground, 0.5 mile (Henderson BB Northeast-Southwest, 1500 feet above mean terrain, 0.5 and others, 1958h) mile (United Engineers and Constructors, Inc., 1978) M East-West, 1000 feet above ground, 0.5 mile (Henderson cc Northeast-Southwest, 1000 feet terrain clearance, 1 mile and others, 1958d) (USGS, 1979) N East-West, 1000 feet above ground, 0.5 mile (Henderson DD East-West, 10,000 feet barometric, 1 mile (Staatz and and others, 1958j) others, 1971) 0 East-West, 1000 feet above ground, 0.5 mile (Henderson EE East-West, 10,000 feet barometric, 1 mile (USGS, 1976) and others, 1958i) FF East-West, 9500 feet barometric, 1 mile (USGS, 1977b) p East-West, 1000 feet above ground, 0.5 mile (Henderson GG East-West, 500 feet above ground, 0.25 mile (Hunting and others, 19581) Geophysical Services, Inc., 1960) Q East-West, 1000 feet above ground, 0.5 mile (Henderson HH East-West, 7000 feet barometric, 2 mile (USGS, 1973) and others, 1958c) II East-West, 7000 feet barometric, 1 mile (USGS, 1974b) R East-West, 1000 feet above ground, 0.5 mile (Henderson JJ East-West, 400 feet above ground, 3 mile (LKB Resources, and others, 1958a) Inc., 1979) s East-West, 1000 feet above ground, 0.5 mile (Henderson KK East-West, 400 feet above ground, 3 mile (Texas and others, 1958f) Instruments, Inc., 1979) T East-West, 1000 feet above ground, 0.5 mile (Henderson LL East-West, 400 feet above ground, 3 mile (LKB Resources, and others, 1958m) Inc., 1978)
51 SOURCES OF DATA Geological Survey of Canada, 1979a, Cape Aattery, British Columbia Simmons, G. C., VanNoy, R. M., and Zilka, N. T., 1974, Mineral re Washington, Canada-United States: Geological Survey of Canada sources of the Cougar Lake-Mount Aix study area, Yakima and Lewis Geophysical Series (High Resolution Aeromagnetic Total Field) Map Counties, Washington, with a section on Interpretation of 8192-G, scale 1:250,000. aeromagnetic data by Willard E. Davis: U.S. Geological Survey ___ 1979b, Victoria-Vancouver, British Columbia-Washington, Open-File Report 7 4-243, 80 p., 3 pis. Canada-United States: Geological Survey of Canada Geophysical Staatz, M. H., Weis, P. L., Tabor, R. W., Robertson, J. F., Van Nay, R. Series (High Resolution Aeromagnetic Total Field) Map 8191-G, M., Pattee, E. C., and Holt, D. C., 1971, Mineral resources of the scale 1:250,000. Pasayten Wilderness area, Washington, with a section on Henderson, J. R., Tyson, N. S., Gilchrist, S. A., and others, 1958a, aeromagnetic interpretation by Gordon P. Eaton and Mortimer H. Aeromagnetic map of part of the Yelm qua.drangle, Thurston and Staatz: U.S. Geological Survey Bulletin 1325, 255 p., 3 pis. Lewis Counties, Washington: U.S. Geological Survey Geophysical Texas Instruments, Inc., 1979, National Uranium Resource Evaluation Investigations Map GP-182, scale 1:62,500. aerial radiometric and magnetic reconnaissance survey of portions ___ 1958b, Aeromagnetic map of the Onalaska quadrangle, of Arizona, Idaho, Montana, New Mexico, South Dakota and Lewis County, Washington: U.S. Geological Survey Geophysical Washington, Ritzville quadrangle-Final Report: U.S. Department Investigations Map GP-189, scale 1:62,500. ofEnergyGrandJunction Office [Report] GJBX 126-79, v. 2J, n.p., Henderson, J. R., Tyson, N. S., McGowan, E. F., and others, 1958c, scale 1:500,000. Aeromagnetic- map of part of the Tenino quadrangle, Thurston Thompson, G. A., 1973, Aeromagnetic and Bouguer gravity map of Twin and Lewis Counties, Washington: U.S. Geological Survey Sisters Dunite, northwestern Washington: U.S. Geological Survey Geophysical Investigations Map GP-181, scale 1:62,500. Geophysical Investigations Map GP-90 1, scale 1:125,000. ___ 1958d, Aeromagnetic map of the Aberdeen quadrangle, United Engineers and Constructors, Inc., 1978, Qualitative aeromagne Grays Harbor and Pacific Counties, Washington: U.S. Geological tic evaluation of structures in the Columbia Plateau and adjacent Survey Geophysical Investigations Map GP-177, scale 1:62,500. Cascade Mountain area: Westboro, Mass., Weston Geophysical Re ___ l958e, Aeromagnetic map of the Adna quadrangle, Lewis search, Inc., 32 p., 31 figs., 2 pis. County, Washington: U.S. Geological Survey Geophysical Investi U.S. Geological Survey, 1973, Aeromagnetic map of parts of the Okano gations Map GP-187, scale 1:62,500. gan and Sandpoint 1 o by 2o quadrangles, Washington-Idaho-Mon ___ l958f, Aeromagnetic map of the Cape Shoalwater quad tana: U.S. GeologicaiSurveyOpen-FileReport, scale 1:250,000. rangle, Pacific County, Washington: U.S. Geological Survey ___ l974a, Aeromagnetic map of part of the Puget Sound area, Geophysical Investigations Map GP-183, scale 1:62,500. Washington: U.S. Geological Survey Open-File Report, scale ___ 1958g, Aeromagnetic map of the Centralia quadrangle, 1:125,000. Lewis County, Washington: U.S. Geological Survey Geophysical ___ 1974b, Aeromagnetic map of parts of the Okanogan, Investigations Map GP-188, scale 1:62,500. Sandpoint, Ritzville, and Spokane 1 o by 2° quadrangles, northeast ___ 1958h, Aeromagnetic map of the Grayland quadrangle, ern Washington: U.S. Geological Survey Open-File Report, scale Grays Harbor and Pacific Counties, Washington: U.S. Geological 1:250,000. Survey Geophysical Investigations Map GP-176, scale 1:62,500. ___ 1976, Aeromagnetic:: map of the Horseshoe Basin quadrangle, ___ 1958i, Aeromagnetic map of the Malone quadrangle, Grays Okanogan County, Washington: U.S. Geological Survey Open-File Harbor, Pacific and Lewis Counties, Washington: U.S. Geological Report76-359, scale 1:62,500. Survey Geophysical Investigations Map GP-179, scale 1:62,500. ___ 1977a, Aeromagnetic map of northern and eastern parts of the ___ 1958j, Aeromagnetic map of the Montesano quadrangle, Puget Sound area, Washington: U.S. Geological Survey Open-File Grays Harbor and Pacific Counties, Washington: U.S. Geological Report 77-34, scale 1:125,000. Survey Geophysical Investigations Map GP-178, scale 1:62,500. ___ 1977b, Aeromagnetic map of part of northern Washington: ___ 1958k, Aeromagnetic map of the Pe Ell quadrangle, Pacific U.S. Geological Survey Open-File Report 77-254, 2 sheets, scale and Lewis Counties, Washington: U.S. Geological Survey 1:62,500. Geophysical Investigations Map GP-186, scale 1:62,500. ___ 1978, Aeromagnetic map of the Bellingham area, Washington: ___ 19581, Aeromagnetic map of the Rochester quadrangle, U.S. Geological Survey Open-File Report 78-354, scale 1:250,000. Thurston, Grays Harbor and Lewis Counties, Washington: U.S. ___ 1979, Aeromagnetic map of the Cascade Pass area, Geological Survey Geophysical Investigations Map GP-180, scale Washington: U.S. Geological Survey Open-File Report 79-1645, 1:62,500. scale 1:62,500. ___ 1958m, Aeromagnetic map of the South Bend quadrangle, ___ 1980a, Aeromagnetic map of offshore northwest Washington: Pacific County, Washington: U.S. Geological Survey Geophysical U.S. Geological Survey Open -File Report 80-97 6, scale 1: 125,000. Investigations Map GP-184, scale 1:62,500. ___ 198Gb, Aeromagnetic map of the central Grays Harbor County ___ 1958n, Aeromagnetic map of the Wiilapa quadrangle, Pacific area, Washington: U.S. Geological Survey Open-File Report 80- County, Washington: U.S. Geological Survey Geophysical Investi 948, scale 1:125,000. gations Map GP-185, scale 1:62,500. ___ 1980c, Aeromagnetic map of the north-central Washington Hunting Geophysical Services, Inc., 1960 Geological interpretation of air Coast: U.S. Geological Survey Open-File Report 80-977, scale borne magnetometer and scintillometer survey, Mt. Bonaparte, Bodie 1:125,000. Mountain, Curlew, Aeneas and Republic quadrangles, Okanogan and ___ 1980d, Aeromagnetic map of the northwest part of the Olympic Ferry Counties, Washington: Washington Division of Mines and Geology National Forest, Washington: U.S. Geological Survey Open-File Re Report of Investigations No. 20, 34 p., 5 pis. port80-950, scale 1:125,000. LKB Resources, Inc., 1978, National Uranium Resource Evaluation aerial Zietz, Isidore, and others, 1971, Interpretation of an a_eromagnetic strip gamma-ray and magnetic reconnaissance survey, NE Washington area, across the northwestern United States: Geological Society of Ameri Spokane NL 11-2 quadrangle-Final Report: U.S. Department of Ener caBulletin, v. 82, no. 12,3347-3372. gy Grand Junction Office [Report] GJBX 121-78, v. 2, n.p., scale 1:500,000. ___ 1979, National Uranium Resource Evaluation aerial gamma ray and magnetic reconnaissance survey, NE Washington area, Okanogan NM 11-10 and Sandpoint NM 11-11 quadrangles-Final Report: U.S. Department of Energy Grand Junction Office [Report] GJBX 142-79, v. 2, n.p., scale 1:500,000.
52 WISCONSIN 90" SPECIFICATIONS A North-South, 3000 feet above sea level, 6 mile (Patenaude, 1966) B North-South, 500 feet above ground, % mile (Zietz and others, 1977) C North-South, 500 feet above ground, % mile (unpublished data) D Northwest-Southeast (southern half) Northeast-Southwest (northern half), 3000 feet barometric, 6 mile (Hinze and and O'Hara, 1966)
SOURCES OF DATA Hinze, W. J., and O'Hara, N. W., Michigan State University, written com munication, 1966 Patenaude, R. W., 1966, A regional aeromagnetic survey of Wisconsin, in Steinhart, J. S., and others, eds., The earth beneath the continents: American Geophysical Union Geophysical Monograph 10, p. 111- 126, fig. 1, scale 1:2,500,000. Zietz, Isidore, Karl." J. H., and Ostrom, M. E., 1977, Preliminary aeromagnetic map (in color) covering most of the exposed Precamb rian terrane in Wisconsin: U.S. Geological Survey Open-File Report 77-598, scale 1:250,000.
0 50 100 MILES I I I~~~~~~ I I II I I 0 50 100 150 KILOMETERS
53 WYOMING
111° 110" 109° 108° 107° 106° 105° 104° 450-r- -- -- ~------.... -- -- ,..----1------1 I I I I A D H I I K I 44° 1~ .J.
I B \ I I I E I I
I \ 30 __t ~~ I I
\ I J I I F I I c 42 .1 1 I \ I I I I G \ I I I I JL__I ___ 41° ------f---- _j+--
0 50 1DO MILES ~~r,'~,~.·~·~\~~·-+'1~'~~·~~~~ 0 50 100 150 KILOMETERS
SPECIFICATIONS ___ 1979b, National Uranium Resource Evaluation aerial A East-West,12,000 feet barometric, 1 mile (USGS, 1973) gamma-ray and magnetic survey, Powder River II Project, New B North-South, 3700 meters barometric, 1.6 kilometers castle and Gillette [1 o by 2o quadrangles] Wyoming and South (Behrendt and others, 1968) Dakota and Ekalaka [1 o by 2° quadrangle], Montana, South and C Unpublished data North Dakota-Final Report: U.S. Department of Energy Grand D East-West, 1000 feet above ground, 3 mile (Balsley and Junction Office [Report] GJBX 82-79, v. 2, n.p., scale 1:500,000. others, 1948) ___ 1979c, National Uranium Resource Evaluation aerial E East-West, 400 feet above ground, 3 mile (Geodata, 1980c) gamma-ray and magnetic survey, Powder River R&D [Sheridan F East-West, 400 feet above ground, 3 mile (Geodata, 1980a) quadrangle-Final Report: U.S. Department of Energy Grand G East-West, 400 feet above ground,· 3 mile (EG&G GeoMetries, Junction Office [Report] GJBX 113-79, v. 2, n.p., scale 1979a) 1:500,000. H East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, ___ 1979d, National Uranium Resource Evaluation aerial 1979c) gamma-ray and magnetic survey, Powder River II Project, Tor I East-West, 400 feet above ground, 6 mile (Geodata, 1980b) rington and Casper quadrangles, Wyoming and Nebraska-Final J East-West, 400 feet above ground, 2 mile (EG&G GeoMetries, Report: U.S. Department of Energy Grand Junction Office [Re 1979d) port] GJBX 158-79, v. 2, n.p., scale 1:500,000. K East-West, 400 feet above ground, 3 mile (EG&G GeoMetries, Geodata International, Inc., 1980a, National Uranium Resource 1979b) Evaluation aerial radiometric and magnetic survey, National To pographic Map, Lander, Wyoming-Final Report: U.S. Depart ment of Energy Grand Junction Office [Report] GJBX 62-80, v. 2, n.p., scale 1:500,000. ___ 1980b, National Uranium Resource Evaluation aerial SOURCES OF DATA radiometric and magnetic survey, National Topographic Map, Ar Balsley, J. R., Hawkes, H. E., and Thurmond, R. D., 1948, minto, Wyoming-Final Report: U.S. Department of Energy Aeromagnetic profiles of the Big Horn Basin area: U.S. Geological Grand Junction Office [Report] GJBX 63-80, v. 2, n.p., scale Survey Open-File Report, scale 1:500,000. 1:500,000. Behrendt, J. C., and others, 1968, A geophysical study in Grand ___ 1980c, National Uranium Resource Evaluation aerial Teton National Park and vicinity, Teton County, Wyoming: U.S. radiometric and magnetic survey, National Topographic Map, Geological Survey Professional Paper 516-E, 22 p., scale Thermopolis, Wyoming-Final Report: U.S. Department of Ener 1:250,000. gy Grand Junction Office [Report] GJBX 64-80, v. 2, n.p., scale EG&G GeoMetries, 1979a, National Uranium Resource Evaluation ae 1:500,000. rial gamma-ray and magnetic survey, Rock Springs, Rawlins, and U.S. Geological Survey, 1973, Aeromagnetic map of Yellowstone Na Cheyenne quadrangles, Wyoming, and Greeley quadrangle, Col tional Park and vicinity, Wyoming-Montana-Idaho: U.S. Geologi orado-Final Report: U.S. Department of Energy Grand Junction cal Survey Open-File Report, 4 sheets, scale 1:125,000. Office [Report] GJBX 17-79, v. 2, n.p., scale 1:500,000.
54 ATLANTIC OCEAN
-
ZOO MILES 0 50 100 I J 1•'•1•'1 I I I I I 0 50 100 200 300 KILOMETERS
H·
I~
55 SPECIFICATIONS SOURCES OF DATA A Northwest-Southeast, 150 meters above sea level, 8 kilometers Klitgord, K. D., and Behrendt, J. C., 1977, Aeromagnetic map of the (Taylor and others, 1968) United States Atlantic Continental Margin: U.S. Geological Survey B North-South, 2500 feet barometric, 1.25 mile (USGS, 1979) Miscellaneous Field Studies Map MF-913, 2 sheets, scale C Northwest-Southeast, 310 meters above sea level, 2.4 1:1,000,000. kilometers (Kiitgord and Behrendt, 1977) Taylor, P. T., Zietz, Isidore, and Dennis, L. S., 1968, Geologic implica D Northwest-Southeast, 460 meters above sea level, 3.2 tions of aeromagnetic data from the eastern continental margin of kilometers (Kiitgord and Behrendt, 1977) the United States: Geophysics, v. 33, no. 5, p. 755-780. E Northwest-Southeast, 460 meters above sea level, 32 U.S. Geological Survey, 1979, Aeromagnetic map of the central part kilometers (Kiitgord and Behrendt, 1977) of the Gulf of Maine: U.S. Geological Survey Open-File Report F Northwest-Southeast, 460 meters above sea level, 9.7 79-1198, scale 1:250,000. kilometers (Kiitgord and Behrendt, 1977) U.S. Naval Oceanographic Office, 1972, R~sidual magnetic intensity G Northwest-Southeast, 460 meters above sea level, 4.8 · contour chart-Gulf of Mexico, Caribbean Sea, North American kilometers (Kiitgord and Behrendt, 1977) Basin, in Environmental-Acoustic atlas of the Caribbean Sea and H Northwest-Southeast, 500 feet above sea level, 5 nautical Gulf of Mexico, v. II, marine environment: U.S. Naval Oceanog miles (US Naval Oceanographic Office, 1972) raphic Office SP-189 II, 181 p. I Northeast-Southwest, 1500 feet above sea level, 5 nautical miles (US Naval Oceanographic Office, 1972) J East-West and North-South, sea level, 10 nautical miles (US Naval Oceanographic Office, 1972)
56 PACIFIC OCEAN 123° 124°
F
\ H ,_
G
12ZO 0 50 100 200 MILES hJ,~',+•'~''I~'~'~~----~~--~~------~~I 0 50 100 200 300 KILOMETERS
121°
120°
119"
117" 116"
57 SPECIFICATIONS SOURCES OF DATA A Unkown, sea level, 5-10 kilometers (Tiffin and Currie, Affleck, James, 1962 Exploration for petroleum by the magnetic 1976) method, in Nagata, Takesi, ed., Benedum earth magnetism sym B East-West, 500 feet above sea level, 2 mile (USGS, 1980a) posium: Pittsburgh, Pennsylvania, University of Pittsburgh Press, C East-West, 2500 feet above sea level, 2 mile (USGS, 1980c) p. 159-175. D East-West, 2500 feet above sea level, 2 mile (USGS, 1980b) Couch, R., Kienle, C., and Con nard, G., 1978, The continental margin E East-West, sea level, 10 nautical miles (Couch and others, of the Pacific Northwest: A summary of the geological and 1978) geophysical data: Corva11lis, Oregon, Oregon State University Re F East-West, 15,000 feet barometric, 5 mile (Zietz and others, port GTR 780816 to the U.S. Department of State, 1978, plate Ill. 1971) Lockwood, Kessler, and Bartlett, Inc., (1968?), Aeromagnetic survey G East-West, 500 feet above sea level, 2 mile (Lockwood, composite map, Oregon coast: Syosset, New York, and Pasadena, Kessler, and Bartlett, Inc., [19687]) California, Lockwood, Kessler, and Bartlett, Inc., scale 1:250,000, H East-West, sea level, 5 nautical miles (Raft and Mason, (prepared for U.S. Geological Survey Heavy Minerals Project). 1961) Raff, A. D., and Mason, R. G., 1961, Magnetic survey off the west I Northeast-Southwest, 2900 meters barometric, 8 kilometers coast of North America, 40° N. latitude to 52° N. latitude: Geolog (unpublished data) ical Society of America Bulletin, v. 72, p. 1267-1270, 1 fig., 1 pl. J Specifications unknown (Affleck, 1962) Theberge, A. E., Jr., 1971, Magnetic survey off southern California K East-West, sea level, 5-15 nautical miles (Theberge, 1971) and Baja California: U.S. National Ocean Survey Operational Data Report NOS DR-12, 11 p., 2 pis., 2 figs. Tiffin, D. L., and Currie, R. G., 1976, Magnetic Anomaly map, west coast of Vancouver Island (NTS 92C, D, E; 102A, H, 1): Geologi cal Survey of Canada Open-File Report 392, scale 1:500,000. U.S. Geological Survey, 1980a, Aeromagnetic map of offshore north west Washington: U.S. Geological Survey Open-File Report 80- 976, scale 1:125,000. ___ 1980b, Aeromagnetic map of the central Grays Harbor County area, Washington: U.S. Geological Survey Open-File Re port 80-948, scale 1:125,000. ___ 1980c, Aeromagnetic map of the north-central Washington Coast: U.S. Geological Survey Open-File Report 80-977, scale 1:125,000. Zietz, Isidore, and others, 1971, Interpretation of an aeromagnetic strip across the northwestern United States: Geological Society of America Bulletin, v. 82, no. 12, p. 3347-3372.
58 GULF OF MEXICO
0 50 100 200 MILES ~~~~'"Y','~i ~• ~I~~---LI ~~------~~~ 0 100 200 300 KILOMETERS
SPECIFICATIONS SOURCES OF DATA A Northeast-Southwest, 1000 feet above sea level, 5 nautical U.S. Naval Oceanographic Office, 1972, Residual magnetic intensity miles (U.S. Naval Oceanographic Office, 1972) contour chart-Gulf of Mexico, Caribbean Sea, North American B East-West, sea level, 15 nautical miles (U.S. Naval Basin, in Environmental-acoustic atlas of the Caribbean Sea and Oceanographic Office, 1972) Gulf of Mexico, v. II, marine environment: U.S. Naval Oceanog C North-South and East-West, 20,000 feet above sea level, raphic Office SP-189 II, 181 p. 2 nautical miles (U.S. Naval Oceanographic Office, 1972) D East-West, sea level, 10 nautical miles (U.S. Naval Oceanographic Office, 1972) E Specifications unknown (unpublished data)
59