DOCSLIB.ORG

Bannock County, Idaho

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Bannock County, Idaho Bannock County, Idaho PPPs Qs Qw Qa Qw TRs Qa Qw OCs Qw 43o0000 Ms Qw Cs Tps American 91 Os Qw Cs CZb Falls Qs Tps CZb Res Qbf Ss Qa Cs Cs Chubbuck 15 86 Tps CZb Cs Pocatello Zp CZb Tov Qbf Cs CZb CZb CZb 91 Zp CZb Cs Zp Qs o CZb Qb Cs 42 5000 InkomInkom CZb Qa Qb CZb Cs Tps Zp Qb Tps Bonneville CZb Qw Cs Cs Os Peak CZb P Tov Qw 15 o OCs r Tps t Qa n CZb e Tps Tps Cs Cs u Cs f Cs R i Os v Cs Os Zp e Tps Ss o Tov r 42 4000 McCammon CZb Ss Tps Cs Qb Qa Scout Os Ss Mtn Os CZb Qbf Qa 31 Cs Qs Os Qb Os Lava Hot Os Cs Qs Springs Tps Zp Qa Qs Qs Os Qs Tps SOs Os Tps Cs Os Tov Os Tps Os OCs Ps Qs Tps CZb Qs Tpf Tov OCs OCs Tps Tps Qbf CZb Tps CZb Qs OCs OCs CZb Qa CZb CZb Tov 91 Downey 15 Qa CZb OCs CZb CZb Qs Tps OCs Tps CZb Tps Tps Qa CZb OCs OCs CZb OCs OCs CZb OCs 112o1000 Qa Tps CZb Zp Qbo Tps CZb 112o0000 Qbo Qa Tps 0 5 10 miles Digital Atlas of Idaho, Nov. 2002 http://imnh.isu.edu/digitalatlas Compiled by Paul K. Link, 0 8 16 kilometers Idaho State University, Geosciences Dept. http://www.isu.edu/departments/geology/ 1:500,000 Bannock County Bannock County straddles the boundary between the Basin and Range, Idaho-Wyoming thrust belt, and Snake River Plain. There are extensive discussions of the geology of Bannock County, including Marsh Valley and Lava Hot Springs in Rocks, Rails and Trails. Bannock County contains folded and thrust-faulted Neoproterozoic and Paleozoic strata in the Bannock and Portneuf Ranges. The intervening Marsh Valley is a Miocene to recent feature, bounded by a normal fault on the east side. The Basalt of Portneuf Valley flowed down the Portneuf River path about 600,000 years ago, and now forms inverted topography in the middle of Marsh Valley. The Lake Bonneville flood broke out at Red Rock Pass in southern Bannock County about 14,500 years ago and flowed north through Marsh Valley and Portneuf Narrows before is spread out in the Pocatello area as it emptied onto the Snake River Plain. Flood boulders are distinctive landscape elements in the Pocatello and Chubbuck areas. See Geology and regional sections of Rocks, Rails and Trails. P.K. Link, 10/02 Description of Geologic Units Qa Quaternary alluvial deposits Qs Quaternary surficial cover, including colluvium, fluvial, alluvial fan, lake, and windblown deposits. Included fluveolian cover on Snake River Plain, (Snake River Group). Qw Quaternary windblown deposits; sand dunes and loess. Qbf Bonneville Flood gravels, including boulder and gravel bars north and west of Red Rock Pass through Marsh Valley and along Snake River west of Pocatello to Hells Canyon. Town of Lewiston is underlain by Bonneville gravels. Tps Pliocene and Upper Miocene stream and lake deposits (Salt Lake Formation, Starlight Formation, Idaho Group). Tpf Pliocene and Upper Miocene felsic volcanic rocks, rhyolite flows, tuffs, ignimbrites. (in Owyhee County and Mt. Bennett Hills, this should be Tmf). Ps Permian sedimentary rocks. TR s Triassic sedimentary rocks. PPPs Permian and Pennsylvanian sedimentary rocks. PPPMs Permian and Carboniferous sedimentary rocks (Snaky Canyon Formation). PPs Pennsylvanian sedimentary rocks. Ms Mississippian sedimentary rocks. MDs Mississippian and Devonian sedimentary rocks. Ds Devonian sedimentary rocks. Ss Silurian sedimentary rocks. DSs Devonian and Silurian sedimentary rocks. DSOs Devonian, Silurian, and Ordovician sedimentary rocks. SOs Silurian and Ordovician sedimentary rocks. Os Ordovician sedimentary rocks. Oi Ordovician intrusive rocks (includes Beaverhead pluton). OCs Ordovician and Cambrian sedimentary rocks. Cs Cambrian sedimentary rocks. OCZ Ordovician, Cambrian, and Neoproterozoic sedimentary rocks, Bannock and Portneuf Ranges. CZb Cambrian to Neoproterozoic Brigham Group. Zp Pocatello Formation; diamictite, sandstone, conglomerate, mafic. Symbols Geologic unit contacts with unit Overturned anticline: trace of axial Yp designation. plane. Normal fault: certain; dashed where Overturnedsyncline: trace of axial approximately located; dotted where plane. concealed. Location of ISU Rockwalk rock Thrust fault: certain; dashed where from each county. approximately located; dotted where concealed. Cities Detachment fault: certain; dashed Feature location where approximately located; dotted where concealed. Roads Anticline: trace of axial plane: large Interstate Route arrow indicates direction of plunge. 15 U.S. Route Syncline: trace of axial plane: large 95 arrow indicates direction of plunge. 1 State route.
Load more

Recommended publications
  • Flood Basalts and Glacier Floods—Roadside Geology
    u 0 by Robert J. Carson and Kevin R. Pogue WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES Information Circular 90 January 1996 WASHINGTON STATE DEPARTMENTOF Natural Resources Jennifer M. Belcher - Commissioner of Public Lands Kaleen Cottingham - Supervisor FLOOD BASALTS AND GLACIER FLOODS: Roadside Geology of Parts of Walla Walla, Franklin, and Columbia Counties, Washington by Robert J. Carson and Kevin R. Pogue WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES Information Circular 90 January 1996 Kaleen Cottingham - Supervisor Division of Geology and Earth Resources WASHINGTON DEPARTMENT OF NATURAL RESOURCES Jennifer M. Belcher-Commissio11er of Public Lands Kaleeo Cottingham-Supervisor DMSION OF GEOLOGY AND EARTH RESOURCES Raymond Lasmanis-State Geologist J. Eric Schuster-Assistant State Geologist William S. Lingley, Jr.-Assistant State Geologist This report is available from: Publications Washington Department of Natural Resources Division of Geology and Earth Resources P.O. Box 47007 Olympia, WA 98504-7007 Price $ 3.24 Tax (WA residents only) ~ Total $ 3.50 Mail orders must be prepaid: please add $1.00 to each order for postage and handling. Make checks payable to the Department of Natural Resources. Front Cover: Palouse Falls (56 m high) in the canyon of the Palouse River. Printed oo recycled paper Printed io the United States of America Contents 1 General geology of southeastern Washington 1 Magnetic polarity 2 Geologic time 2 Columbia River Basalt Group 2 Tectonic features 5 Quaternary sedimentation 6 Road log 7 Further reading 7 Acknowledgments 8 Part 1 - Walla Walla to Palouse Falls (69.0 miles) 21 Part 2 - Palouse Falls to Lower Monumental Dam (27.0 miles) 26 Part 3 - Lower Monumental Dam to Ice Harbor Dam (38.7 miles) 33 Part 4 - Ice Harbor Dam to Wallula Gap (26.7 mi les) 38 Part 5 - Wallula Gap to Walla Walla (42.0 miles) 44 References cited ILLUSTRATIONS I Figure 1.
    [Show full text]
  • Geologic Map of the Twin Falls 30 X 60 Minute Quadrangle, Idaho
    Geologic Map of the Twin Falls 30 x 60 Minute Quadrangle, Idaho Compiled and Mapped by Kurt L. Othberg, John D. Kauffman, Virginia S. Gillerman, and Dean L. Garwood 2012 Idaho Geological Survey Third Floor, Morrill Hall University of Idaho Geologic Map 49 Moscow, Idaho 83843-3014 2012 Geologic Map of the Twin Falls 30 x 60 Minute Quadrangle, Idaho Compiled and Mapped by Kurt L. Othberg, John D. Kauffman, Virginia S. Gillerman, and Dean L. Garwood INTRODUCTION 43˚ 115˚ The geology in the 1:100,000-scale Twin Falls 30 x 23 13 18 7 8 25 60 minute quadrangle is based on field work conduct- ed by the authors from 2002 through 2005, previous 24 17 14 16 19 20 26 1:24,000-scale maps published by the Idaho Geological Survey, mapping by other researchers, and compilation 11 10 from previous work. Mapping sources are identified 9 15 12 6 in Figures 1 and 2. The geologic mapping was funded in part by the STATEMAP and EDMAP components 5 1 2 22 21 of the U.S. Geological Survey’s National Cooperative 4 3 42˚ 30' Geologic Mapping Program (Figure 1). We recognize 114˚ that small map units in the Snake River Canyon are dif- 1. Bonnichsen and Godchaux, 1995a 15. Kauffman and Othberg, 2005a ficult to identify at this map scale and we direct readers 2. Bonnichsen and Godchaux, 16. Kauffman and Othberg, 2005b to the 1:24,000-scale geologic maps shown in Figure 1. 1995b; Othberg and others, 2005 17. Kauffman and others, 2005a 3.
    [Show full text]
  • LATE MIOCENE FISHES of the CACHE VALLEY MEMBER, SALT LAKE FORMATION, UTAH and IDAHO By
    LATE MIOCENE FISHES OF THE CACHE VALLEY MEMBER, SALT LAKE FORMATION, UTAH AND IDAHO by PATRICK H. MCCLELLAN AND GERALD R. SMITH MISCELLANEOUS PUBLICATIONS MUSEUM OF ZOOLOGY, UNIVERSITY OF MICHIGAN, 208 Ann Arbor, December 17, 2020 ISSN 0076-8405 P U B L I C A T I O N S O F T H E MUSEUM OF ZOOLOGY, UNIVERSITY OF MICHIGAN NO. 208 GERALD SMITH, Editor The publications of the Museum of Zoology, The University of Michigan, consist primarily of two series—the Miscellaneous Publications and the Occasional Papers. Both series were founded by Dr. Bryant Walker, Mr. Bradshaw H. Swales, and Dr. W. W. Newcomb. Occasionally the Museum publishes contributions outside of these series. Beginning in 1990 these are titled Special Publications and Circulars and each is sequentially numbered. All submitted manuscripts to any of the Museum’s publications receive external peer review. The Occasional Papers, begun in 1913, serve as a medium for original studies based principally upon the collections in the Museum. They are issued separately. When a sufficient number of pages has been printed to make a volume, a title page, table of contents, and an index are supplied to libraries and individuals on the mailing list for the series. The Miscellaneous Publications, initiated in 1916, include monographic studies, papers on field and museum techniques, and other contributions not within the scope of the Occasional Papers, and are published separately. Each number has a title page and, when necessary, a table of contents. A complete list of publications on Mammals, Birds, Reptiles and Amphibians, Fishes, I nsects, Mollusks, and other topics is available.
    [Show full text]
  • Owyhee County, Qg Homedale Idaho Tps Qg 78 Qg 0 5 10 Miles Marsing
    117o0133 43o4100 Owyhee County, Qg Homedale Idaho Tps Qg 78 Qg 0 5 10 miles Marsing S 0 8 16 kilometers Tmb n a k Tps e Tmf R iv e Tps r TmfTps 95 Tmf Tms Tmb Tfm Kgd Tpf Tmf Qa Tmb Kgd Tpb Murphy Qb Qs Kgd Tps S n a k Qs Qw e Kgd Tps Ri Tms Tpb v er Tmf Qb Tmf QTs QTs Qb Qs Tmb Kgd 78 Silver Tpb C.J. Stri City Tpf Grand View ke Re Tmb Tpb serv War Eagle o i Mountain Tpb r 115o2700 QTs Qb Tmb 42o5600 Tpb Tpf Qg QTs Qa Tmf Tpb Tmb Qg Qs Qg Tmf QTs Qw Qg QTs Qg Digital Atlas of Idaho, Nov. 2002 Qa Bruneau Qa QTs http://imnh.isu.edu/digitalatlas Qs Compiled by Paul K. Link, Qs Idaho State University, Geosciences Dept. Qs http://www.isu.edu/departments/geology/ Kgd Tps Tps QTs Qa Ki Qw Qw o Tps 115 0200 Tmb Qs 42o4600 B Pzu r Tpb Tpb u Qs Tcv Qw n Kgd e QTs a u Qg Pzu Tpb R Tpb i Tpf v Tpb e Tmf Tpb r Tpf Tps Tpb Qa Qs Tmf Tpf Tpf Tpb Tpb Tpb Tpb Tpb Qg 51 Tpb Tpf Tpf Tpb Tpb Tpf Tpb Tpb Tpf Tpf Tpb Tpb Qs Grasmere Tps Tpf Tpb Qs Tpf Tpf Tpb Tpb J a Tpb r Juniper Butte Owyhee River b Tpf i d Tpb ge Tpf R iv Tpb e r Tpf Riddle Qs Tpf Tpb Tpb Tpb Tpb Tpb B Tpb r u n Tpb e Tpb a Murphy Tpb Tps Qa u Tpf R Hot Srings Qa i Tpb v Tpb Tpf e Duck Valley Indian Reservation r 41o5945 41o5956 Tpb Tpb Tpb 115o0200 117o0144 Owyhee County Owyhee County covers a huge area in southwest Idaho, south of the Snake River.
    [Show full text]
  • Historic Resource Study
    Historic Resource Study Minidoka Internment National Monument _____________________________________________________ Prepared for the National Park Service U.S. Department of the Interior Seattle, Washington Minidoka Internment National Monument Historic Resource Study Amy Lowe Meger History Department Colorado State University National Park Service U.S. Department of the Interior Seattle, Washington 2005 Table of Contents Acknowledgements…………………………………………………………………… i Note on Terminology………………………………………….…………………..…. ii List of Figures ………………………………………………………………………. iii Part One - Before World War II Chapter One - Introduction - Minidoka Internment National Monument …………... 1 Chapter Two - Life on the Margins - History of Early Idaho………………………… 5 Chapter Three - Gardening in a Desert - Settlement and Development……………… 21 Chapter Four - Legalized Discrimination - Nikkei Before World War II……………. 37 Part Two - World War II Chapter Five- Outcry for Relocation - World War II in America ………….…..…… 65 Chapter Six - A Dust Covered Pseudo City - Camp Construction……………………. 87 Chapter Seven - Camp Minidoka - Evacuation, Relocation, and Incarceration ………105 Part Three - After World War II Chapter Eight - Farm in a Day- Settlement and Development Resume……………… 153 Chapter Nine - Conclusion- Commemoration and Memory………………………….. 163 Appendixes ………………………………………………………………………… 173 Bibliography…………………………………………………………………………. 181 Cover: Nikkei working on canal drop at Minidoka, date and photographer unknown, circa 1943. (Minidoka Manuscript Collection, Hagerman Fossil
    [Show full text]
  • WIB#4: Ground Water Resource of Mountain Home Area, Elmore
    WATER INFORMATION BULLETIN NO. 4 ·' GROUND-WATER RESOURCE OF THE MOUNTAIN HOME AREA, ELMORE COUNTY, IOAHO by Dole R. Rolston Hydrologist and Sheri L. Chapmon Geologist Prepared and Published by Idaho Department of Reclomolion R. Keith Higginson Stole Reclomalion Engineer JULY 1968 ACKNOWLEDGEMENTS The Department of Reclamation and the authors wish to acknowledge the assistance of the Idaho Bureau of Mines and Geology in the preparation . of this report, Sylvia Ross, Ground-Water Geologist for the Bureau, provided valuable field and interpretive assistance in the geological reconnaissance and water quality data compilation. The Bureau provided the chemical analysis and made available water level recorders and field equipment which helped to enlarge the scope of the investigation. The loan of water level recorders by the Water Resources Division, U. S. Geological Survey is appreciated. The cooperation of the many well drillers, tenants, and owners who supplied information a.'ld allowed access to wells is also gratefully acknowledged. Ill CONTENTS Page Acknowledgments. III Abstract .. VII Introduction. 1 Purpose 1 Objectives 1 Location a...r1d Extent 2 Previous Investigations 2 Well Numbering System. 4 Geographic Setting .. 4 Geology ... 8 Geologic Formations 8 Idavada Volcanics. 8 Idaho Group . 10 Banbury Basalt. 10 Glenns Ferry Formation. 12 Bruneau Formation. 13 Snake River Group .. 16 Sugar Bowl Gravel . 16 Crows11est Gravel . 16 Snake River Basalt. 17 Melon Gravel. 18 Unconsolidated Sediments. 18 Geologic Structure. 19 Cenezoic Geologic History 20 Tertiary Period .. 20 Quaternary Period 20 Hydrology. ... 21 Hydrologic Subareas .. 21 Mt. Bennett Hills Subarea 22 Hot Springs Subarea. 25 Mountain Horne Subarea. 30 Air Base Subarea 33 Glenns Ferry Subarea .
    [Show full text]
  • Paleodischarge of the Late Pleistocene Bonneville Flood, Snake River, Idaho, Computed from New Evidence
    Paleodischarge of the late Pleistocene Bonneville Flood, Snake River, Idaho, computed from new evidence c' l^niT 1 US Geological Survey, Federal Center, Box 25046, Denver, Colorado 80225 ilAKULU L. MALL/IJ ) ABSTRACT The path followed by the Bonneville Flood down the Snake River was greatly modified by erosion and deposition. Particularly impressive The Bonneville Flood resulted from catastrophic outflow from are abandoned channels, areas of scabland, and gravel bars composed of Pleistocene Lake Bonneville about 15,000 yr ago, when the lake over- huge boulders and sand. Parts of the Snake River Canyon are now known topped its rim at Red Rock Pass in southeastern Idaho and discharged to have been flooded to depths greater than 130 m. a vast volume of water down the Snake River. This paper provides The altitudes of the erosional and depositional features produced by revised estimates of the paleodischarge, volume, and duration of the the Bonneville Flood indicate the maximum flood height and are used to Bonneville Flood, based on new evidence of its height and on current reconstruct the flood profile. When the profile is considered in the context understanding of the amount of lowering of Lake Bonneville. Evi- of the dimensions of the Snake River Canyon, particularly where the dence for the revised height of the flood is derived from the altitude of canyon is constricted, a peak discharge can be calculated. Based on new erosiona! features and flood deposits at the head of a constricted reach evidence of the flood height in a constricted reach of the Snake River at the of the Snake River Canyon at the mouth of Sinker Creek and from the mouth of Sinker Creek, 540 km downstream from Red Rock Pass, this altitudes of flood deposits at several places about 53 km upstream.
    [Show full text]
  • Persistence Component GRSG Persistence Component Towns-Communities ID Roads Hydrology BLM Field Office Admin Boundaries Surface Mgt
    114°W 113°30'W 113°W 112°30'W 112°W 111°30'W 111°W 110°30'W R 21 E (ID) R 22 E (ID) R 23 E (ID) R 24 E (ID) R 25 E (ID) R 15 W (MT) R 14 W (MT) R 13 W (MT) R 12 W (MT) R 02 E (MT) R 03 E (MT) 93 Big Dry M Iron/Lime Turner Muleshoe R a Canyon i v d Iron/Lime i e s Creek r o Creek McDevitt n 93 M Creek a ) d H is k o o M L e r M Lee Metcalf n 28 e e s W a a r D e d R m d i i C P e s v i I h Napo Canyon s o e s Poison Creek r r n Earth quake i o n a r t a ( R i n R s r o e i F i e i Lake n v R o v B Wilderness e i e m r 93 C r i l r v k a r r e t e e a e r N v n i S k u t R o 93 s 8 a M E 1 28 Poison Creek 93 LEM HI T Grouse Creek Yearian Creek Cabin Creek r e v Findley i R Basin n o E m l Wade L ake l k R a 93 iv S er k e Cabin e r C Creek 28 Lower Roostercomb n e Reese d y Creek ) 93 a H 29 D Ryegrass/North Hebg en L ake I ( Hayden Freestrip N l n t Cedar Gulch a C ou i g l ar Cr s 7 i t e n e ta k e a k o 93 Roostercomb l i c Cliff Lake r 1 a y l l k ll t M B e o e W v a k re e ra a r s o F o t G e H 29 C F g G N Cabin F r o n u T t e rk a o Little s e M R n Creek e a r D d t n i a 28 Eightmile W so L n i em R n 93 h Snowc i i R rest ve s iv r e r Range 93 Co k ug e H ar e C r e ree C k M n R n r Big Springs e i o y 93 R d s s i a u v e R B n L 29 r o t Hat Creek c a a k i k Wilson C n e re ek s T Hat Creek M e o n ) Mill Creek u d n o R ta y e M d a D Allison i d Mollie Gulch n R i I s o s Creek c o n ( l k tai k 87 R c Little 28 R la B s vi M i v ain e t e Sawmill/South un r e r o d M M N Hayden ic a Walters in Jakes d Leadville e i
    [Show full text]
  • Geologic Maps of the Grand View-Bruneau Area, Owyhee County, Idaho
    Geologic Map of the Grand View-Bruneau Area, Owyhee County, Idaho Margaret D. Jenks Bill Bonnichsen Martha M. Godchaux Idaho Geological Survey Technical Report 98- 1 University of Idaho December 1998 Moscow, Idaho 83844-3014 Contents Introduction ............................................................... 1 Location ................................................................ 2 General Geologic Setting ........................................................ 2 Structure ................................................................ 5 Hotsprings ............................................................... 6 Acknowledgments ........................................................... 7 References ............................................................... 7 DescriptionofUnits .......................................................... 9 SedimentqUnits .......................................................... 9 Younger Unconsolidated Sediments ............................................... 9 Qal Alluvium (Holocene) .................................................. 9 Qil Intermittent lake sediments (Holocene) ......................................... 9 Qfs Fresh, unvegetated dune sand (Holocene) ....................................... 9 Qaf Alluvial fan deposits (Holocene and Pleistocene) ........................ :.............. 9 Qds Vegetated dune sand (Holocene and Pleistocene) ................................... 9 Qls Landslide deposits (Holocene and Pleistocene) .................................... 9 Qbf Bonneville
    [Show full text]
  • ED046693.Pdf
    DO,AMENT RESUME ED 046 693 SF 009 427 AUTHOR Parsons, Donna L. TITLE Idaho, An Outdoor Classroom. INSTITUTION Caldwell School District 132, Idaho. SPONS AGENCY Bureau of Plementary and Secondary education (DHEW/OE), Washington, D.C. PUB DATE Sep 68 GRANT 0FG-3-7-70457-4972(056) NOTE 224p. AVAILABLE FROM Donna L. Parsons, Caldwell School District 132, Idaho EDRS PRICE EDRS Price M7-$0.65 HC Not Available from EDRS. DESCRIPTORS Conservation Education, Ecology, Environment, *Environmental Education, *Field. Trips, Natural Resources, *Outdoor Education, *Teaching Guides IDENTIFIERS ESEA Title III ABSTRACT This field guide for public school teachers pinpoints special areas in Idaho where students can study and learn by direct experience in the outdoors. The guide divides the state into northern, southwestern, and southeastern districts. Environmental study trip guides complete with roadlogs, pictures, and maps of each area develop the three major districts. The guide concludes with a listing of indnstries, and guided tours of their facilities. This work was prepared under an FSRA Title III contract. [Not available in hardcopy due to marginal legibility of original document. ](PB) 11\1:' ' , t .1V-.Vj r.;1- '"c",;"; ,`,..; , c ",,, 7, ,',',4 F3F,1" 1 t i ;' ,z" f -',4`,",,''' V V <'''''.:`'i7"-''^C ) -';'0 fr, , 1 --',.-',. .7,:.:'..,:'` '' -- f,,.' ' .., -,-,. , t-I. /-,.. -,,,,,,. -1., 's, '-""'-, t.='''. Is ,1",".. ,,,' ,,_,,,-; ,-----4-----*------=';-,--",t,",t-7,-----.';'-7,, - AI ,,' ri , --, ,LS.,1.4L,4,4 ', ' ' i',( , 'I, .-1_,,r,-' ..: ,Y.,^- ''..,-.--',I.zr !..':. -0,0):,: '-''. .. ',.'' .. VI , '' ;,:''. ".r 1' .` ,'",,' "' _.,-. '' 1-Z, ,',,,, ',' ':,' nii' -, J'-' -:',;,..,,-,-,,--':.? , . U.S. DEPARTMENT OF HEALTH. EDUCATION - ', I & WELFARE OFFICE OF EDUCATION VI V " THIS DOCUMENT HAS BEEN REPRODUCED EXACTLY AS RECEIVED FROM THE PERSON OR ORGANIZATION ORIGINATING IT.
    [Show full text]
  • The Great Bonneville Flood
    IDAHO STATE HISTORICAL SOCIETY REFERENCE SERIES THE GREAT BONNEVILLE FLOOD Number 98 Revised January 1995 Until around 10,000 to 12,000 years ago, North America had a climate much colder and wetter than today. Lake Bonneville covered much of Utah and Nevada, and other great lakes occupied much of the present desert areas of the Great Basin. A continental ice sheet (the most recent of a series of four great ice sheets that periodically advanced and melted) covered much of the Great Plains far to the north and east. Snake River ran much larger than today, and until some 34,000 years ago Bear River ran through Portneuf Canyon into Snake River. Then intermittent lava flows west of Soda Springs gradually blocked Bear River. This formed a lake that overflowed into Lake Bonneville, which got several hundred feet deeper. Sometime later than 14,500 years ago, Lake Bonneville began to overflow through Red Rock Pass into Snake River. Once that happened, the Red Rock channel into Snake River deepened very quickly. Lake Bonneville drained down some 60 or more feet to a level of about 5,085 feet. Then over a long period of time, Bonneville River kept on flowing into Snake River, cutting a deeper channel in Red Rock Pass. Finally, Lake Bonneville got down to the 4,775 foot level. From that point on, the lake evaporated faster than water flowed in, and no longer had an outlet into Snake River. This entire discharge did not come in one single stage, but at the beginning, a catastrophic flood poured out of Lake Bonneville.
    [Show full text]
  • Geological Society of America Bulletin
    Downloaded from gsabulletin.gsapubs.org on March 27, 2010 Geological Society of America Bulletin EVIDENCE OF LAKE BONNEVILLE FLOOD ALONG SNAKE RIVER BELOW KING HILL, IDAHO HAROLD T STEARNS Geological Society of America Bulletin 1962;73;385-388 doi: 10.1130/0016-7606(1962)73[385:EOLBFA]2.0.CO;2 Email alerting services click www.gsapubs.org/cgi/alerts to receive free e-mail alerts when new articles cite this article Subscribe click www.gsapubs.org/subscriptions/ to subscribe to Geological Society of America Bulletin Permission request click http://www.geosociety.org/pubs/copyrt.htm#gsa to contact GSA Copyright not claimed on content prepared wholly by U.S. government employees within scope of their employment. Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in subsequent works and to make unlimited copies of items in GSA's journals for noncommercial use in classrooms to further education and science. This file may not be posted to any Web site, but authors may post the abstracts only of their articles on their own or their organization's Web site providing the posting includes a reference to the article's full citation. GSA provides this and other forums for the presentation of diverse opinions and positions by scientists worldwide, regardless of their race, citizenship, gender, religion, or political viewpoint. Opinions presented in this publication do not reflect official positions of the Society. Notes Copyright © 1962, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S.
    [Show full text]