o
unmapped TbBu TbBm TbCl TbCl TbCm TbCl TbBl TbCm TbCm TbCu TbCm TbDl TbA TbDm TbDu TbE TbCl TbCl TbCl TbBu TbBu TbCm TbCl TbCm TbBu TbBm TbBm TbBu TbBm TbBl TbBu TbBu TbBm TbCl 1.5 SHLS SHLS SHLS SCLS SCLS SHLS SCLS SCLS SCLS SCLS SHLS SHLS ULS BELS ~BBS LTLS HFT SHLS SCLSGEOLOGIC MAP UNITS
DISCLAIMERS
U sers of these map s are cautioned ab out using the data at scales different than those at which the m ap s were co m p iled — using this data ata largerscale will no tp ro vide greater accuracy,and in fact,itis a m isuse of the data.
T he Wyom ing State Geolo gical Survey (WSGS) and the State of Wyo m ing makes no rep resentation or warranty, expressed or im plied, regarding the use, accuracy, or com pleteness of the data presented herein, or from a map printed fro m these data; no r shall the act of distribution constitute any such warranty. The WSGS does no t guarantee these digital data herein,o rm ap p rinted fro m these data,to b e free o f erro rs o r inaccuracies.
T he WSGS and the State of Wyo m ing disclaim s any responsibility or liab ility fo r interp retations fro m this digital data o rm ap p rinted from these digital data,or decisions b ased thereon. The WSGS and the State of Wyo m ing retains and do es no t waive sovereign im m unity.
T he use of or reference to tradem arks,trade nam es, or o ther p ro ductor co m pany nam es in this product is for descriptive or informatio nal purpo ses, or is pursuant to licensing agreem ents between the WSGS or the State of Wyo m ing and software or hardware develop ers/vendors,and does no tim ply endorsem ento f those p ro d ucts b y the WSGS o r the State o f Wyo m ing.
KEY TO MEASURED SECTIONS
(b lue indicates sections sho wn o n this m ap )
Map reference Name of measured section Reference sources *
a Reference Sectio n,T win Buttes Mem b er Ap pendix 2,T ab le 18
(NortheastSage Creek Mo untain)
b SouthwestSage Creek Mountain Ap pendix 5,T ab le 20
c SouthwestCedar Mountain Ap pendix 3,T ab le 19
d T yp e Section,T urtle Bluff Mem b er Ap pendix 4,T ab le 19
(West Cedar Mountain)
e SoutheastCedarMo untain Ap pendix 6,T ab le 21
f T yp e Section,T win Buttes Mem b er Ap pendix 1,T ab le 17
(SoutheastT win Buttes)
g NortheastHickey Mountain T ab le 22
h NortheastSage Creek Mo untain T ab le 23
i South CedarMountain T ab le 25
j North CedarMountain T ab le 24
k NortheastCedarMo untain T ab le 27
l NortheastMass Mo untain T ab le 26
m NorthwestBlack Mo untain T ab le 29
n NorthwestT win Buttes T ab le 28
* Refer to Wyo m ing State Geo lo gical Survey Rep ortof Investigation s
57 (2007).
ABBREVIATIONS FOR MARKER UNITS
(red indicates units sho wn o n this m ap ) BBI Base o f Bishop Conglo m erate
BRGB Behunin Reservoirgyp sum b ed BELS Basal E lim esto ne
ULS U pp erw hite lim esto ne
BBS Basal b lue sheetsandsto ne ~BBS App ro xim ate level o f Basal b lue
sheetsandsto ne
HRL Hickey Reservo ir lim esto ne
LTLS L o netree lim estone
HFLS Henrys Fork lim esto ne HFT Henrys Fork tuff
BFLS BurntFork lim esto ne
HRRB Horse Ranch red b ed HMLS Hickey Mo untain lim esto ne SHLS Soap Holes lim esto ne
BKLS Butcher Knife lim estone WRLS Whiskey Reservo ir lim esto ne
SCLS Sage Creek lim esto ne
BISHOP CONGLOMERATE (Oligo cene)*
BRIDGER FORMATION (early and m iddle Eocene)
Turtle Bluff Member (BridgerE) (middle Eocene)
Twin Buttes Member (“U p per Bridger” o rBridgerC and D) (m iddle Eocene)
upp erBridger D m iddle Bridger D lo werBridger D upp erBridger C m iddle Bridger C lowerBridger C
Blacks Fork Member (“L o wer Bridger” or BridgerA and B)(early and m iddle Eocene)
upperBridgerB m iddle Bridger B lo werBridgerB Bridger A
*notp resenton this m ap
NOTICE TO USERS OF W YOMING STATE GEOLOGI CAL SURVEY INFORMATION
Most informatio n pro duced by the Wyo m ing State Geolo gical Survey (WSGS) is p ublic dom ain, is not cop yrighted, and may be used without restriction. We ask that users credit the m ap autho rs and the WSGS as a co urtesy when using this informatio n in who le or in p art. This app lies to published and unpublished materials in p rinted o r electro nic fo rm .Contactthe WSGS if you have any questio ns ab outciting m aterials o r p rep aring acknowledgem ents.Y o ur co op eratio n is app reciated.
SCALE 1:24,000 Miles 1 0.5 0 1 Feet 1,000 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 Kilometers 1 0.5 0 1
CONTOUR INTERVAL 20 FEET
NATIONAL GEODETIC VERTICAL DATUM OF 1929 (Ho
rse R
anch) (Black Spring Reservoir) (Dev
ils Pla ygrou nd) (Lin w oo d C anyo n) (Manila ) (Jessen Butte) (Phil P ico Moun tain) (McK in no n)
GENERALIZED STRATIGRAPHIC SECTION IN THE TWIN BUTTES AND BLACK MOUNTAIN AREA
OPEN FILE REPORT 07-7I
Antelope Wash 1:24,000-scale Geologic Map
Geology - Interpreting the past to provide for the future
WYOMING STATE GEOLOGICAL SURVEY
Ronald C. Surdam, State Geologist
Laramie, Wyoming
TbCu TbCm TbCl TbBu TbBm TbBl TbA TBi TbE TbDu TbDm TbDlEXPLANATION
MAP SYMBOLSMarker unit,exp o sed; see ABBREV IAT IONS FOR MARKER U NITS Marker unit,inferred where p o o rly exp o sed; see ABBREV IAT IONS
FOR MARKER U NITS
Strike and dip o f b eds
µ
1HFT SHLS
UTM GRID CONVERGENCE (GN)
1980 MAGNETIC DECLINATION (MN) AT CENTER OF SHEET DIAGRAM IS APPROXIMATE MN GN
^
0o 47' 141/2 14 MILS 258 MILS oBRIDGER FORMATION PROJECT LOCATION MAP Lone tree Burnt fork McKin non Horse Ran ch Antel ope W ash Reed Res ervoir Linwo od Ca nyon Devils Play groun d Soap Holes Res ervoir Black Sprin g Res ervoir 109°40'W 109°40'W 109°45'W 109°45'W 110°15'W 110°15'W 109°50'W 109°50'W 110°10'W 110°10'W 109°55'W 109°55'W 110°5'W 110°5'W 110°W 110°W 41°10'N 41°10'N 41°5'N 41°5'N 41°N 41°N
INDEX MAP OF 1:24,000 - SCALE QUADRANGLES
Num b er indic ates Wyo m ing State Geo lo gic al Survey Op en File Rep o rt (OFR) (1:24,000-scale digital geo lo gic m ap s are inc luded o n CD fo r RI-57) A 1:100,000 - scale geo lo gic m ap o f all quadrangles ab o ve is p ublished in Wyo m ing State Geo lo gic al Survey Rep o rt o f Investigations (RI) 57
OFR 0 7-7A OFR 0 7-7B OFR 0 7-7F OFR 0 7-7G OFR 0 7-7C OFR 0 7-7H OFR 0 7-7D OFR 0 7-7E OFR 0 7-7I OFR 0 7-7J
Base Map from U.S. Geological Survey 1:24,000-scale topographic map of the Antelope Wash, Wyoming 7 1/2-minute Quadrangle, 1964
Projection: Universal Transverse Mercator (UTM), zone 12 North American Datum of 1927 (NAD 27)
1,000 meter grid ticks: UTM zone 12
10,000-foot grid ticks:Wyoming State Plane Coordinate System, West zone
A digital version of this map is also available on CD-ROM.
People with disabilities who require an alternative form of communication in order to use this publication should contact the Editor, Wyoming State Geological Survey. TTY Relay Operator 1 (800) 877-9975f Digital cartography by Justin E. Scott and David W. Lucke Wyoming State Geological Survey P.O. Box 1347 - Laramie, WY 82073-1347 Phone: (307) 766-2286 - Fax: (307) 766-2605 Email: wsgs_sales@uwyo.edu
