Page 1 DEPARTMENT of GEOLOGY and MINERALOGY, OXFORD

Total Page：16

File Type：pdf, Size：1020Kb

Page 1 DEPARTMENT of GEOLOGY and MINERALOGY, OXFORD

DEPARTMEI,,TEOF GBOmGY-AND-IfiII{ERAIOGT.f SJCFORD. IGIfEOUS ACTIVITY COURSE DemonstratLon 3. vor,c4lglo,Rpcicg 0F' CqAIEFIAI{$ Examlno the noeks and. sections from Cnater take ( the ord,er of the rocks ls ehnonol.ogleal, except that No.13 ehould. come before No.14). On the evldence of.these nocks: 1. Compare the more baelc r.ocks of Orater l.lalre wtth the baea].te of Hawall, Ign.Act.V F & H, and the Brltlsh Tertlary provlneet Ign.Aet.IID&Vg. 2. Deecrlbe and. flgune the textural featunee of the tntesned.late and. ac1d. nocks. 3. Llst and brlefly descnlbe the mlneraLs occunrtng as pheno- cryete in the rocks 1n ord.er from baslc to aqid and aLso consid'er the l,ist ln nelatlon to the sequence of the rocke of Mount Mazama. xror d'ese-iption anil alaLygis National e-ee Horrel l{,illiams rfThe orelonr-w'trt----6*r"gie " Georogr of crater Lake to Momt 3"k, nu"orirJiulun"" of tLre cascad.e shasia"' rnsiit;im Range souttru*rd. or washingi;rr'prruri*tion !rao, 1gt'., ;'l,4.+T.s1. Typiel olivine basalt of peak Union : voleno (J) . , G,r- Ff a{I F1.4. ::,L;\ <92, 0livjne-aqgite basalt of Union peak Volcano _ Red.Blanket Canyon (!!) lr,t;1" *, f'JJ' ot5: to ,fu ?$uoent centrar- plug of uniqx peak (q) sirn-ilar to analysea voroano ,r, ^ -Z spolimEn;";; from pl,g, Fr. let _ 's*tl'o-r'3lr' lvrto $rpical Mazanaandeeite: Head of sun creek canyon (5!) pt rf _j. *1{id*r'35' wpical Mt. jvibzanaandesiter Dutton Ridge. (tzl) aiiid3f361. vpical and.osi-te of Mourt scott volcano (10) :.'r'r:i:rf,57.Dacite, Red.ctoud. Cliff gAil . pf pf.ZA l.+, . #7.r"t . ,4. - i!''.rlrf.S8. Dacite, C-Ieet.wood.Cove flow--" (1g9a)\'vrsl iinaI. NO. 21 . Faf. 2t . +ci;.i*{sg.*tffi Brimof wineglass(15ru) tlj*irl*r. f .,,3. fl-t"-, t*rT.1p. 'Livine basalt. Flow from Rod.Oone (f f f ) p. rr?[. ,*L*;:Tlr1.r.Allffil"lo. Cmterpeak oincler oone (19) "4ri*11,2.,Tilr""::1Tl*". rimbercrater (175) pf. 1,.s t. tI "$i'*af'6'**ti:li:-*i:tiliitr;"(5{li*ng a'alanchej.n castre cnek canyon, ./rnal. No. 26. N.t{. ."f,.**I#*.In bottlel sarnple of gmnular ,rpuriloe fhlL,f of oLinaotio erutr*ion. (X) tLs,*c-.*-re, * st€d,r,r. *$ e.*.ci- , p7 "t-l a "-u-**c+* *t"Jn* qt&$"{L *.*-L\&.$*}, c.*J.

Copy Link

Recommended publications

Crater Lake National Park Oregon
DEPARTMENT OF THE INTERIOR HUBERT WORK. SECRETARY NATIONAL PARK SERVICE STEPHEN T. MATHER. DIRECTOR RULES AND REGULATIONS CRATER LAKE NATIONAL PARK OREGON PALISADE POINT, MOUNT SCOTT IN THE DISTANCE 1923 Season from July 1 to September 30 THE PHANTOM SHIP. FISHING IS EXCELLENT IN CRATER LAKE. THE NATIONAL PARKS AT A GLANCE. [Number, 19; total area, 11,372 square miles.] Area in National parks in Distinctive characteristics. order of creation. Location. squaro miles. Hot Springs Middle Arkansas li 40 hot springs possessing curative properties- 1832 Many hotels and boarding houses—20 bath houses under public control. Yellowstone Northwestern Wyo 3.348 More geysers than in all rest of world together- 1872 ming. Boiling springs—Mud volcanoes—Petrified for ests—Grand Canyon of the Yellowstone, remark able for gorgeous coloring—Large lakes—Many largo streams and waterfalls—Vast wilderness, greatest wild bird and animal preserve in world— Exceptional trout fishing. Sequoia. Middle eastern Cali 252 The Big Tree National Park—several hundred 1S90 fornia. sequoia trees over 10 feet in diameter, some 25 to 36 feet, hi diameter—Towering mountain ranges- Startling precipices—Mile long cave of delicate beauty." Yosemito Middle eastern Cali 1,125 Valley of world-famed beauty—Lofty chits—Ro 1890 fornia. mantic vistas—Many waterfalls of extraordinary height—3 groves of big trees—High Sierra— Waterwhcol falls—Good trout fishing. General Grant Middle eastern Cali 4 Created to preserve the celebrated General Grant 1S90 fornia. Tree, 3* feet in diameter—6 miles from Sequoia National Park. Mount Rainier ... West central Wash 321 Largest accessible single peak glacier system—28 1899 ington.
[Show full text]
USGS Scientific Investigations Map 2832, Pamphlet
Geologic Map of Mount Mazama and Crater Lake Caldera, Oregon By Charles R. Bacon Pamphlet to accompany Scientific Investigations Map 2832 View from the south-southwest rim of Crater Lake caldera showing the caldera wall from Hillman Peak on the west to Cleetwood Cove on the north. Crater Lake fills half of the 8- by 10-km-diameter caldera formed during the climactic eruption of Mount Mazama volcano approximately 7,700 years ago. Volcanic rocks exposed in the caldera walls and on the flanks record over 400,000 years of eruptive history. The exposed cinder cone and andesite lava flows on Wizard Island represent only 2 percent of the total volume of postcaldera volcanic rock that is largely covered by Crater Lake. Beyond Wizard Island, the great cliff of Llao Rock, rhyodacite lava emplaced 100–200 years before the caldera-forming eruption, dominates the northwest caldera wall where andesite lava flows at the lakeshore are approximately 150,000 years old. 2008 U.S. Department of the Interior U.S. Geological Survey This page intentionally left blank. CONTENTS Introduction . 1 Physiography and access . 1 Methods . 1 Geologic setting . 4 Eruptive history . 5 Regional volcanism . 6 Pre-Mazama silicic rocks . 6 Mount Mazama . 7 Preclimactic rhyodacites . 9 The climactic eruption . 10 Postcaldera volcanism . .11 Submerged caldera walls and floor . .11 Glaciation . .11 Geothermal phenomena . 12 Hazards . 13 Volcanic hazards . 13 Earthquake hazards . 14 Acknowledgments . 14 Description of map units . 14 Sedimentary deposits . 15 Volcanic rocks . 15 Regional volcanism, northwest . 15 Regional volcanism, southwest . 17 Mount Mazama . 20 Regional volcanism, east . 38 References cited .
[Show full text]
Rogue Gorge (Mt
Rogue Gorge (Mt. Stella) Roadless Area-- T30S R3E (primarily in portions of Sections 23, 26, 33, 34 & 35) Rogue River-Siskiyou National Forest--High Cascades Ranger District Upper, higher elevation trail provides two expansive summit top views of the Crater Lake Rim and crest of the southern Cascades. Additionally, two, lower, old growth-lined trails closely parallel the upper Rogue River within this same roadless area. A longer 7 mile, (north-south) river trail, follows just above the Rogue River’s westside. While a shorter 3.5 mile trail provides easy access opportunities on the opposite shore to outstanding riverside views of the geologically remarkable “Rogue Gorge” and “Natural Bridge”— the latter being the southern access to the riverside portion of this remarkable roadless area. All 4 recommended hikes (described below) in this most varied roadless area are easily accessible from the main Crater Lake Hwy. 62 (& Hwy. 230). Also, nearby and outside this proposed Wilderness area are 3 local area campgrounds, a restaurant, rustic cabins, and a small store. Upper Rogue River along trail #1034A at the confluence with Union Creek. Rogue Gorge Roadless Area—Page 2 The 2,300 acres Rogue Gorge proposed Wilderness area, bordered along its east side by the upper Rogue River, provides unspoiled vistas along the river and the Crater Lake/Rogue-Umpqua Scenic Highway. The lower elevations of this old growth dominated, riverside roadless area provide a scenic backdrop for the Forest Service’s Farewell Bend and Union Creek Campgrounds, as well as the geologically remarkable “Rogue (River) Gorge”. All described trailheads below are located just off the Crater Lake Highway 62-230, immediately north and south of the 56 mile post at Union Creek (private restaurant and resort).
[Show full text]
Crater Lake U.S
National Park Service Crater Lake U.S. Department of the Interior Refections Visitor Guide Summer/Fall 2017 Park News 2 ... Camping, Lodging, Food Visit the Sinnott Overlook 3 ... Ranger Programs f Water Restrictions in Effect Please help us conserve water during Plus 10 Other Ways to Enjoy Your Park 4 ... Hiking Trails your visit. The park’s ability to provide 5 ... Driving Map water is currently restricted as we The Sinnott Memorial Overlook ofers one of the ... In the News: Bull Trout transition from a surface water source fnest views of Crater Lake. You can peer down a 6 to a groundwater well. If you’re sheer drop of nearly 900 feet (274 meters) to the 7 ... Feature Article: Lake Level reading this before arriving, please shore! It also features the park’s best exhibits. A small stock up on water outside the park. 8 ... Climate Chart museum describes the lake’s geology, formation, and While you’re here, please take short exploration. (Of special interest is the original device showers, don’t run the tap, and reuse used by scientists to measure the lake’s depth in 1886.) towels and sheets if staying overnight Look Inside! in park lodging. Thanks for your help! Finding this special viewpoint can be a challenge. f Leave Your Drone at Home It’s hidden behind the Rim Visitor Center, perched on a promontory 50 feet (15 meters) below the rim. Operating remote-controlled aircraft Landscape architect Merel Sager, who oversaw in the park is prohibited. Please report Park Profle violators to the nearest employee.
[Show full text]
Ore Bin / Oregon Geology Magazine / Journal
The ORE BIN Volume 28, No.9 September, 1966 FULGURITES FROM MOUNT THIELSEN, OREGON By William B. Purdom Southern Oregon College, Ashland, Oregon Fulgurites are natural glasses formed where lightning strikes bare rock or sand. They are the result of a very large electrical discharge between the earth and clouds. The potential difference necessary for such a discharge results when minute droplets of water condense on dust particles in the atmosphere. These droplets grow until the limit of cohesion is exceeded (when the drop has a diameter of about 4mm), after which they are torn apart by rapidly ascend ing air currents. The smaller, lighter fragments are carried to the top of the cloud, losing electrons as the result of friction. Thus the upper portion of the cloud becomes positively charged, and the lower portion negatively charged, and an electrical potential difference exists between the top and bottom of the cloud. The earth itself becomes charged by induction and the electrons in the earth become concentrated on any protuberances on the surface. If the electrical potential difference between oppositely charged por tions of the cloud or between the cloud and the earth become great enough, discharge occurs in the form of an immense spark. The critical potential difference is generally in the range of 20 to 30 million volts. It has recent ly been ascertained that these discharges occur in 10 microseconds or less (Orville, 1966). High-speed photographs reveal that the stroke starts as a thin leader passing between different parts of the cloud or between cloud and earth.
[Show full text]
Simplified Geologic Map of Crater Lake NP
Geologic Resources Inventory National Park Service U.S. Department of the Interior Simplified Geologic Map of Crater Lake NP QTnwa North 02.55 Qg Kilometers 230 138 Miles 0 2.5 5 QTnwba QTnwba Hmcri Qsm QTcin D E Qal S Qsm E Qcyba Hmcri R North Entrance Road T R ID G QTnwba Qg E QTcmvd E QTcmvd Hmcpf G Hmcpf D I QTnwba Timber Crater R 7424ft QTcmvd T 2263m E N QTnwba CR ES C Hmcri QTnwba PUMICE DESERT QTnwba Qg Red Cone Hmcri 7363ft 2245m Grouse Hill 7412ft Hmcri 2260m Hmcp Hmcp Hmcfi Llao Rock 8049ft 2453m E (o a p st en s Rim u D Qer Qg mm er r i o n v l S y e F Hmpa ) F U L B Qsm Merriam Cone T T Hillman Peak -486ft O -148m C Hmcri 8151ft S 2484m Qsm Hmcp The Watchman Hmcri 8013ft Hmcfi 2442m WIZARD ISLAND 6940ft Crater Lake 2116m Hmcri Hmpa Qg Hmpa QTnwba Qg W ( Hmcfi o e MOUNT SCOTT p s Hmcfi e t (highest point in park) n Qsm Qg 8929ft s R u i 2721m m m Rim Village m e D r Qg o r n iv ly e Hmcp ) Qg Park Headquarters Applegate Peak 8126ft Visitor Center 2477m Hmcri Qmea Hmcri Hmcfi Hmcp Qg 62 Qmed Qg Qg Hmcp P IN N A C Qg L Mazama Village E T V HE A Hmcfi P LL INN E Hmcri AC Y Hmcri LES Crater Peak Qswba 7263ft 2214m Qea Qswba Hmcri Union Peak Qg 7709ft 2350m Hmcfi Hmcfi Hmcp Hmcri Qg Qer Qswba PUMICE 62 FLAT Qg Qmer QTnwba 232 QTeba QTeba Qmer Hmcri Qg QTnwba Qswba Hmu Qg QTswa Hmcri Qea Qswba Qg QTswa QTeb QTeb Full Extent of Digital Data, Area of Detail in Red NPS Boundary Hmcwt Mount Mazama climactic eruption, Wineglass Welded Tuff of Williams (1942) Hmcpf Mount Mazama climactic eruption, pumice-flow deposits Infrastructure Qmer Mount Mazama
[Show full text]
Water-Resources Appraisal of Crater Lake National Park, Oregon
UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Water Resources Division WATER-RESOURCES APPRAISAL OF CRATER LAKE NATIONAL PARK, OREGON By F. J. Frank and A. B. Harris Prepared in cooperation with the National Park Service Portland, Oregon OPEN-FILE REPORT 1969 CONTENTS Page Abstract--------------------------------------------------------- 1 Introduction----------------------------------------------------- 2 Geographic features---------------------------------------------- 2 Geologic features------------------------------------------------ 5 General geology--------------------------------------------- 6 Relation of geology to occurrence of water------------------ 6 Water supply----------------------------------------------------- 7 Ground water------------------------------------------------ 7 Occurrence and availability---------------------------- 7 Results of previous investigations--------------------- 8 Streams and springs----------------------------------------- 8 Dependable flow---------------------------------------- 13 Chemical quality--------------------------------------- 18 Utilization and development of water----------------------------- 18 Existing supplies------------------------------------------- 18 Potential at selected areas--------------------------------- 20 West Entrance------------------------------------------ 20 North Entrance -------------------------------------- 21 Old south boundary------------------------------------- 21 South utility --------------------------------------- 23 North Junction-----------------------------------------
[Show full text]
Andesite Conference Guidebook
ANDESITE CONFERENCE GUIDEBOOK I NTERNATI 0 NAL UPPER MANTLE PROJECT Sci enti fi c Report 16-S Published by: State of Oregon, Department of Geology and Mineral Industries, as Bulletin 62 International UPPER MANTLE COMMITTEE Prof. V. V. BELOUSSOV, Chairman (Moscow) Dr. Luis R. A. CAPURRO (Buenos Aires) Prof. A. E. RINGWOOD (Canberra) Dr. J. M. HARRISON (Ottawa) Prof. S. K. RUNCORN (Newcastle-upon-Tyne) Prot. Leon KNOPOFF, Secretary-General (Los Angeles) Dr. Klyoo \,VADATI (Tokyo) ANDESITE CONFERENCE July 1 to 6, 1968 Eugene and Bend, Oregon U. S. A. Sponsored by: University of Oregon Center for Volcanology A. R. McBirney, Director International Upper Mantle Committee Prof. Hisashi Kuno, Chairman Working Group on Petrology and Volcanism State of Oregon Department of Geology and Mineral Industries H. M. Dole, State Geologist Financial assistance for the Andesite Conference was provided by the International Union of Geodesy and Geophysics and by the International Union of Geological Sciences. The Upper Mantle Project is an international program of research on the solid earth sponsored by the International Counci I of Scientific Unions; the program is coordinated by the International Upper Mantle Committee, an IUGG committee set up jointly by the International Union of Geodesy and Geophysics and the International Union of Geological Sciences, with rules providing for the active participation of all interested ICSU Unions and Committees. Cover Picture: Andesite Thin Section Cover design is a microdrawing of the hypersthene-augite andesite at the highest peak of Mount jefferson. The rock is typical of the andesites of the Oregon Cascades in both its petrographic features and chemical composition.
[Show full text]
Andesite Conference Guidebook
STATE OF OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES 1069 STATE OFFICE BUILDING PORTLAND. OREGON 97201 ANDESITE CONFERENCE GUIDEBOOK Editor, Hollis M. Dole Cartographer, C. J . Newhouse Bulletin 62 1968 STATE GOVERNING BOARD Frank C. McColloch, Chairman Portland Harold Banta Baker Fayette I. Bristol Grants Pass Hollis M. Dole STATE GEOLOGIST Publication of this bulletin was in part financed by the Oregon State Technical Services Program for the purpose of transferring scientific research and technical information to business and industry for increased economic growth of Oregon. AEROMAGNETIC AND GRAVITY SURVEYS OF THE CRATER LAKE REGION, OREGON* By H . Richard Blank, Jr. ** Introduction Since 1962 the U. S. Geological Survey has been engaged in a continuing program of geophysical studies in southwestern Oregon, primarily concerned with delineating and interpreting the regional Bouguer grav- ity field (Blank, 1966). In the course of this study the gross features of the gravity field in the vicinity of Crater Lake were delineated. It was early apparent that the Crater Lake complex does not produce a large negative gravity anomaly such as is commonly associated with calderas of the Krakatoan type (Yokoyama, 1963). This result was not unexpected in view of the OREGON evident lack of an appreciable thickness of low-density fill within the caldera. However, it was felt that a more complete definition of the geophysical environment of the caldera might shed some light on its regional structur- AREA of SURVEYS al position and on the question of whether re- lated intrusive bodies are present at depth. To this end additional gravity work was performed, including the establishment of a number of sta- 0 Medford tions within the caldera on the perimeter of the lake and on Wizard Island, and an aero- magnetic survey was made of the caldera and Figure 1 .
[Show full text]
Crater Lake National Park
CRATER LAKE NATIONAL PARK • OREGON • UNITED STATES DEPARTMENT OF THE INTERIOR NATIONAL PARK SERVICE UNITED STATES DEPARTMENT OF THE INTERIOR HAROLD L. ICKES, Secretary NATIONAL PARK SERVICE ARNO B. CAMMERER, Director CRATER LAKE NATIONAL PARK OREGON OPEN EARLY SPRING TO LATE FALL UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 193S RULES AND REGULATIONS The park regulations are designed for the protection of the natural beauties and scenery as well as for the comfort and convenience of visitors. CONTENTS The following synopsis is for the general guidance of visitors, who are PAGE requested to assist the administration by observing the rules. Full regula DISCOVERY AND HISTORY i tions may be seen at the office of the superintendent and ranger station. GEOLOGICAL STORY 4 Fires.—Light carefully, and in designated places. Extinguish com WORK OF STREAMS AND GLACIERS 7 pletely before leaving camp, even for temporary absence. Do not guess RECORDS OF VEGETATION 9 your fire is out—know it. DESTRUCTION OF THE MOUNTAIN 10 Camps.—Use designated camp grounds. Keep the camp grounds PLACES OF INTEREST 12 clean. Combustible rubbish shall be burned on camp fires, and all other SINNOTT MEMORIAL 12 garbage and refuse of all kinds shall be placed in garbage cans or pits RIM DRIVE 15 provided for the purpose. Dead or fallen wood may be used for firewood. WIZARD ISLAND 16 Trash.—Do not throw paper, lunch refuse, kodak cartons, chewing- LLAO ROCK 16 gum paper, or other trash over the rim, on walks, trails, roads, or elsewhere. GARFIELD PEAK 16 Carry until you can burn in camp or place in receptacle.
[Show full text]
The Smith Brothers'
WCi~'~, L\.'PI . ' Smi~ THE SMITH BROTHERS' CH RON 0 LOGICAL HISTORY L- , . i.. r - , . ' THIS COLLECTION OF HISTORICAL TRIVIA IS ' - RESPECTIVELY DEDICATED TO THE MEMORY OF CRATER LAKE NATIONAL PARK 1 S "FATHER", WILLIAM GLADSTONE STEEL, OF WHOM IT HAS BEEN SAID THAT HE SPENT TWO HOURS EACH DAY FOR 50 YEARS WORKING ON HIS CRATER LAKE TRIVIA COLLECTION. - l.s. II A CHRONOLOGICAL HISTORY AND IMPORTANT EVENT LOG OF CRATER LAKE NATIONAL PARK Including significant Crater Lake records and "firsts" (over 1200 entries) Original compiled ... 1968 Revised ............. August, 1972 Revised .•........... September, 1972 Revised ......•...... August, 1973 Collected and edited by: Revised ..•.......... August, 1974 Revised· ........•.... July, 1975 Larry B. Smith Revised ............. August, 1977 L1 o yd C • Sm i th Revised ............. August, 1981 Revised .......•..... July, 1982 Sources: Interviews and oral history Past periodicals Superintendent reports Park files Nature notes Steel Points Steel Scrapbooks Park Technical files The Enchanted Lake Our National Park Policy Local newspapers The Crater Lake Story I Mazama Yearly Report-1897 I . Paul Herron Park Archives William Steel ' . I I: '. r Fi rs t a word .. .. Thi s document is a living organism. Entries were be ing added all winter as the pages of thi s history ~~ing retyped . This accounts for items being out of chronological order or the double entri es that vary slightly in text. Oral rememberences al so cause what seem to be contridictions. (Different people remember past even ts in different ways.) These inconsistentci es will be r emoved during the next revision. Records of pa1ticul ar events may or may not have been superceded in subsequent years.
[Show full text]
ANCIENT VOLCANOES of Oregon
The ANCIENT VOLCANOES of Oregon By HOWEL WILLIAMS CON DON LECTURES OREGON STATE SYSTEM OF HIGHER EDUCATION EUGENE, OREGON . .1953 THE CONDON LECTURES The Condon Lectureship was established in 1944 by the Oregon State Board of Higher Education upon the recommendation of the late Dr. John C. Merriam who was, at that time, a member of the faculty of the University of Oregon. The Lec- tureship was named in honor of Dr. Thomas Condon, the first professor of geology at the University. The purpose of the lectures is to interpret the results of significant scientific research to the nonspecialist. The lectures, usually two annually, are delivered three times in the state, namely, at Eugene, Corvallis, and Portland. They are then published in appropriately adapted form. CONDON LECTURE PUBLICATIONS The Ancient Volcanoes of Oregon. By Howel Williams, Chairman, Department of Geological Sciences, University of California. Jan., 1948. (Out of print.) MalaysiaCrossroads of the Orient. By Fay-Cooper Cole, Emeritus Chairman, Department of Anthropology, University of Chicago. Apr., 1948. 75 cents. The Ancient Forests of Oregon. By Ralph W. Chaney, Professor of Paleontology, University of California. Dec., 1948. $1.00. The China That Is To Be. By Kenneth Scott Latourette, and D. Willis James, Pro- fessor of Missions and Oriental History and Fellow of Berkeley College, Yale University. Mar., 1949. 75 cents. The Pacific Island Peoples in the Postwar World. By Felix M. Keesing, Execu- tive Head, Department of Sociology and Anthropology, Stanford University. Mar., 1950. 75 cents. Pacific Coast Earthquakes. By Perry Byerly, Professor Seismology, University of California. May, 1952. 75 cents.
[Show full text]