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GEOLOGICAL SURVEY RESEARCH 1966 Chapter B GEOLOGICAL SURVEY RESEARCH 1966 Chapter B GEOLOGICAL SURVEY PROFESSIONAL PAPER 550-B Scientific notes and summaries of investigations by members of the Conservation, Geologic, Topographic, and Water Resources Divisions in geology, hydrology, and .related fields UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1966 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director For sale by the Superintendent of Documents, U.S. Government Printing Ofice, Washington, D.C., 20402 - Price $2.00 GEOLOGIC STUDIES Structural geology Page Unconformity between gneissic granodiorite and overlying Yavapai Series (older Precambrian), central Arizona, by P. M. Blacet --.---.-------......-----------------------------------------------------------------------------ii. Bl \ Tectonic movement in the Grapevine area, Kern County, Calif., by B. E. Lofgren -___---___---_-----_---_-----_---6 Cattle Creek anticline, a salt diapir near Glenwood Springs, Colo., by W. W. Mallory ------_---_-_-_-_-___-_-_-_- __ 12 Domes in the Atlantic Coastal Plain east of Trenton, N.J., by J. P. Minard and J. P. Owens ........................ 16 Paleontology and stratigraphy Regional unconformity in Late Cretaceous, Wyoming, by J. R. Gill and W. A. Cobban -_____--_-_-_-_-____--__---- Permian coleoid cephalopods from the Phosphoria Formation in Idaho and Montana, by Mackenzie Gordon, Jr - - - - - - - Devonian stratigraphy of the Confusion Range, west-central Utah, by R. K. Hose .................................. Tertiary extrusive volcanic rocks in Middle Park, Grand County, Colo., by G. A. Izett -----__----_____---_------------ Oketaella earglei, a new fusulinid species, from the Adams Branch Limestone Member of the Graford Formation of Late Pennsylvanian age, Brown County, Texas, by D. A. Myers ................................................... Graptolite-bearing Silurian rocks of the Houlton-Smyrna Mills area, Aroostook County, Maine, by Louis Pavlides and W. B. N. Berry--______----__---------------------------------------------------------------------------- Stratigraphic significance of Tertiary fossils from the Orca Group in the Prince William Sound region, Alaska, by George Plafkerand F. S. MacNeil----_____---------------------------------------------------------------------- Stratigraphic relations of Upper Cretaceous rocks, Lamont-Bairoil area, south-central Wyoming, by M. W. Reynolds- - _ --L Geomorphology and Quaternary geology The Milnor channel, an ice-marginal course of the Sheyenne River, N. Dak., by C. H. Baker, Jr- - - ----------------- 77 Structural control of wind gaps and water gaps and of stream capture in the Stroudsburg area, Pennsylvania and New Jersey, by J. B. Epstein---_---__-----------____- 80 Sandblasted blocks on a hill in the coastal plain of New Jersey, by J. P. Minard ................................... 87 Pre-Wisconsin glacial deposits in northern Kentucky, by L. L. Ray ----_-_-----___-----_-_.................... --- 91 Marine geology Distribution and geologic structure of Triassic rocks in the Bay of Fundy and the northeastern part of the Gulf of Maine, by A. R. Taggand Elazar Uchupi_---_----_--_--_------_____--_-__----______--______----------------------95 Geophysics Measurement of the velocity of high-amplitude shock waves in rock materials by means of strain gages, by M. H. Cam..-- 99 Seismic surveying with firecrackers-a modification of the sledgehammer method, by J. H. Criner ...................... 104 Relation between Bouguer gravity anomalies and regional topography in Nevada and the eastern Snake River Plain, Idaho, by D. R. Mabey_-----___---__-------------------------------------------------------------------- 108 Preliminary report on regional aeromagnetic anomalies in northwestern Montana, by M. R. Mudge, G. D. Robinson, and G. P. Eaton -_-__--_ _--- __-- - --- -------- -- -- -- ---------- -- ------------ --------- ----- ---------------- - 11 1 Mineralogy and petrology Granulite and peridotite inclusions from Prindle Volcano, Yukon-Tanana Upland, Alaska, by H. L. Foster, R. B. Forbes, and D. M. Ragan ---- - - - - - - _ - _ _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 115 Occurrence and identification of jordisite at Ambrosia Lake, N. Mex., by H. C. Granger and B. L. Ingram------ - - - - - - 120 Loeweite, vanthoffite, bloedite, and leonite from southeastern New Mexico, by B. M. Madsen-- - - - - - - - - - - - - - - - - - - - - - 125 Rare-earth thorium carbonate veins of the Road Gulch area, northern Wet Mountains, Colo., by M. H. Staatz and N. M. Conklin------_--___------------------------------------------------------------------------------ 130 Geochemistry Field determination of nanogram quantities of mercury in soils and rocks, by Margaret Hinkle, K. W. Leong, and F. N. Ward -----_-------__-_-_---_---_---___---__--____----____------___---_-___-----_----------------------- 135 Tellurium and mercury in jasperoid samples, by T. G. Lovering, H. W. Lakin, and J. H. McCarthy - - - - - - - - - - - - - - - - - 138 Geochronology Uranium-lead and potassium-argon ages of parts of the Amargosa thrust complex, Death Valley, Calif., by T. W. Stern, M. F. Newell, and C. B. Hunt - _ - - - - - _ - - - - - - - - - - - - - - -- - - -- - - - - - -- - - - - - - - - - -- - - - - - - - - - -- - - - - - - - - - - - - - - -- - - - 142 III IV CONTENTS Volcanology Page Lava coils of some recent historic flows, Hawaii, by D. L. Peck __--.-.._.__.__---------------------------------.- B148 Economic geology Phosphate deposits in the basal beds of the Maquoketa Shale near Dubuque, Iowa, by C. E. Brown- _ ____________._ Trona in the Wilkins Peak Member of the Green River Formation, southwestern Wyoming, by W. C. Culbertson____. Hydrothermal alteration near the Kennecott copper mines, Wrangell Mountains area, Alaska-A preliminary report, by E. M. MacKevett, Jr., and A. S. Radtke-----____--------------------------.-------.------------------------ Zonal distribution of elements in some uranium-vanadium roll and tabular ore bodies on the Colorado Plateau, by D. R. Analytical techniques and instrumentation Uranium, thorium, and radium analyses by gamma-ray spectrometry (0.184-0.352 million electron volts), by C. M. Bunker and C. A. Bush-_____-_______-----------------------------.--------------------------------------- Portable core drill and thin-section laboratory for field use, by G. B. Dalrymple and R. R. Doell _______-_____------- Determination of carbon dioxide in limestone and dolomite by acid-base titration, by F. S. Grimaldi, Leonard Shapiro, and Marian Schnepfe___-_______-------------------------------.--------------------.--------------------- Determination of silver in mineralized rocks by atomic-absorption spectrophotometry, by Claude Huffman, Jr., J. D. Mensik, and L. F. Rader__----___--_------------.----------.-----.--------------------------------------- HYDROLOGIC STUDIES Surface water Observed configuration and computed roughness of the underside of river ice, St. Croix River, Wis., by K. L. Carey---- Time-of-travel measurements on the Passaic and Pompton Rivers, N.J., by G. M. Horwitz and P. W. Anderson------- Botanical and chemical characteristics during the fall overturn of a small eutrophic lake, Pretty Lake, Ind., by R. G. Lipscomb---------____________---____________------------------..-..-------------------------------------- Effect of glacial geology upon the time distribution of streamflow in eastern and southern Connecticut, by M. P. Thomas-- Experimental hydrology Preliminary evaluation of three tracers used in hydraulic experiments on sand models, by J. M. Cahill- - - - - - - - - - - - - - - TOPOGRAPHIC MAPPING Mapping equipment Truck-mounted hydraulic-lift surveying tower, by H. B. Loving and W. L. Sappington............................. INDEXES GEOLOGICAL SURVEY RESEARCH 1966 This collection of 43 short papers is the first published chapter of "Geological Survey Research 1966." The papers report on scientific and economic results of current work by members of the Conservation, Geologic, Topographic, and Water Resources Divisions of the U.S. Geological Survey. Chapter A, to be published later in the year, will present a summary of significant results of work done during fiscal year 1966, together with lists of investigations in progress, reports published, cooperating agencies, and Geological Survey offices. "Geological Survey Research 1966" is the seventh volume of the annual series Geological Survey Research. The six volumes already published are listed below, with their series designations. Geological Survey Research 1960-Prof. Paper 400 Geological Survey Research 1961-Prof. Paper 424 Geological Survey Research 1962-Prof. Paper 450 Geological Survey Research 1963-Prof. Paper 475 Geological Survey Research 1964-Prof. Paper 501 Geological Survey Research 1965-Prof. Paper 525 - GEOLOGICAL SURVEY RESEARCH 1966 UNCONFORMITY BETWEEN GNEISSIC GRANODIORITE AND OVERLYING YAVAPAI SERIES (OLDER PRECAMBRIAN), CENTRAL ARIZONA By P. M. BLACET, Beltsville, Md. Abstract.-Granodiorite older than isoclinally folded schists The Brady Butte Granodiorite represents part of an of the Yavapai Series is uniquely exposed in the core of an ancient basement upon which the older precambrian upfaulted anticline at Brady Butte southeast of Prescott, Ariz. schists of central Arizona were deposited. A folded unconformity at the base of the Alder Group of the Yavapai Series is well exposed in
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