Prepared in cooperation with the GEOLOGIC INVESTIGATIONS SERIES I–2660 U.S. DEPARTMENT OF THE INTERIOR WASHINGTON STATE DEPARTMENT OF NATURAL RESOURCES SHEET 2 of 2 U.S. GEOLOGICAL SURVEY DIVISION OF GEOLOGY AND EARTH RESOURCES Pamphlet accompanies map
BAKER WINDOW BAKER WINDOW KULSHAN CALDERA
BIG BOSOM BUTTES LT I'-I" MOUNT DAMFINO FAULT
DAMFINO FAULT
TION
FAU TION A A' CALDERA A" C SECTION BLACK BUTTES MOUNT BAKER C' C" B-B' LARRABEE A'-A" H-H'
C'-C" SEC VOLCANO SECTION
YELLOW ASTER SEC SECTION METERS WINCHESTER FAULT METERS METERS METERS BUTTE TWIN SISTERS D-D' H-H' Coleman Glacier
3000 3000 3000 Qbbb TABLE CHESTER 3000 SECTION MOUNTAIN GRPT? SECTION Qbv bv Deming PDcv Glacier MOUNTAIN Sholes Glacier }|cc ST SKYLINE ST WIN
KJna BEND IN
Mazama Glacier
2500 2500 2500 SECTION I-I' byag 2500 DIVIDE Ked Creek Wells GRPT byag Qbtp ST North Fork bu KJb Tcp EX PDc
BEND IN SECTION
SECTION ERT KJna Nooksack River Nooksack PDc Qbbb Swamp Creek 2000 Ked GRPT Tvbm 2000 2000 G Qkls KJna PDc PDc 2000 Silesia Creek Qkrl Qbcp Qbtm PDcv GEX PDc byag Ked }|cc GRPT Glacier Creek PDcv ST Wells Creek Wells Qkig KJna River Nooksack North Fork PDc byag KJb but Qkmb PDcv 1500 Tc Qu Tvbb 1500 1500 KJb Pcmv Ked 1500 Tc KJna PDcv Qu Ked KJna PDc Ked KJb KJna Qu 1000 KJna KJnt Jnw KJna Tos Tvbd 1000 1000 Qu Kes 1000 Qu Qu Tcbr 500 ST 500 500 PDcv KJna 500 PDcv SEA LEVEL SEA LEVEL SEA LEVEL KJna SEA LEVEL GEX byag Pcmv 500 KJna 500 500 500 PDc byag ERT Kjs Ked Tcsp Tos Pcmv 1000 1000 1000 byan byan KJb Kjs Ked 1000 Tcsp 1500 1500 1500 1500
2000 2000 2000 2000 500 meters = 1640.4 feet 500 meters = 1640.4 feet Qu, Quaternary deposits undivided. Thin unconsolidated deposits not shown Qu, Quaternary deposits undivided. Thin unconsolidated deposits not shown GEX, Glacier Extensional Fault; ST, Shuksan Thrust Fault; ERT, Excelsior Ridge Thrust Fault; GRPT, Gold Run Pass Thrust Fault GEX, Glacier Extensional Fault; ST, Shuksan Thrust Fault C-C'
BAKER WINDOW SECTION KULSHAN CALDERA ROSS LAKE FAULT ZONE HOZOMEEN FAULT I'-I" SECTION B WPT B'
METERS MOUNT SHUKSAN METERS CHOWDER 3000 H-H' Clearwater Creek NOOKSACK ICY PEAK MINERAL 3000
RIDGE SECTION CIRQUE MOUNTAIN 2500 Mazama Glacier Kes DESOLATION Glacier Creek Qkls 2500 KJna Tcm Tcpct TKsbg PEAK Shales Glacier Mineral Creek Mineral 2000 Qkrl Tcbrp Beaver Pass Ross Lake GEX Qbbr Qbtp Qkrl Tcm Tcbg TKsbga 2000 Qkrl Ked Tcrg Tcid Creek Pass Tcpc
Little Beaver Creek Js ST Tcla Tcnm Tcdg 1500 Kjs Qbv Swift Creek Tcpc 1500 KJb Qu Qu Thb Tcbr Qu ^hc |hg Qu Qkig Qkig Qu Qu 1000 Qu |hg 1000 500 500 Pcmv SEA LEVEL KJnt Jnw SEA LEVEL bv 500 byag Tcla 500 1000 1000 1500 1500 2000 2000 500 meters = 1640.4 feet Qu, Quaternary deposits undivided. Thin unconsolidated deposits not shown ST, Shuksan Thrust Fault; GEX, Glacier Extensional Fault; WPT, Welker Peak Thrust Fault
D' D" BAKER WINDOW ROSS LAKE FAULT ZONE
D N D"'
NORTH TIO ELEPHANT
C MOUNT C-C' I'-I" E BUTTE
S METERS TWIN BEND IN TERROR METERS SECTION SECTION BEND IN 3000 SECTION 3000 PARK HAGEN MOUNTAIN Tos
2500 Lonesome Creek 2500 BUTTE Qbpb Qbm Baker Lake Kes Ross Lake
ANDERSON CREEK FAULT Tcbr 2000 Ked Tcdg TKso TKsf 2000 Green Creek Green
THUNDER LAKE FAULT TKsbg TKs WPT Tos Big Beaver Creek TKs
Sulphur Creek Tcba TKsbg
Noisy Creek Tcdga Goodell Creek but KJb Qbv byag Creek Dillard TKsbga 1500 byag Ked Kes 1500 bv PDc Qu GEX KJb Qu byag KJb TKsbga 1000 PT Qag TKlp |hg 1000 KJna bb bb W Qu ^hc }|cc |hg Qu 500 KJb Qbsc Qu Tcmi 500 byag byan SEA LEVEL TKsbg SEA LEVEL 500 bv TKso 500 GEX J^c Ked TKsbg 1000 Pcmv ST 1000 KJb 1500 1500
2000 2000 500 meters = 1640.4 feet Qu, Quaternary deposits undivided. Thin unconsolidated deposits not shown WPT, Welker Peak Thrust Fault; GEX, Glacier Extensional Fault
BAKER WINDOW ROSS LAKE FAULT ZONE E E'
METERS METERS TRIUMPH FAULT SOURDOUGH 3000 ANDERSON CREEK FAULT MOUNTAIN 3000 MOUNT TRIUMPH 2500 WATSON PASS 2500 THUNDER LAKE FAULT Ross EXT TKsbg 2000 MOUNTAIN GOAT byag WPT Tos TKns PUMPKIN Lake Noisy Creek TKto TKsbga TKsbga 2000 TKsbg Big Beaver Creek bc ? I''-I''' WPT Kes Kes Tcdg MOUNTAIN GEX KJb Goodell Creek 1500 but KJb PDcl SECTION TKso |hg 1500 PDc Bacon Creek Ked Lake J^cd Tcdga TKsbg TKso TKsbga KJb Stetattle Creek Tksbg 1000 Shannon ERT 1000 Kjs KJnt }|cc Qu Qu TKlp Qu KJna Qu Qu 500 Qu Qu Qu Qu 500 Tcmi SEA LEVEL SEA LEVEL KJna PDc Tcdg 500 Jnw 500 1000 TKhri 1000 1500 1500
2000 2000 500 meters = 1640.4 feet Qu, Quaternary deposits undivided. Thin unconsolidated deposits not shown GEX, Glacier Extensional Fault; WPT, Welker Peak Thrust Fault; ERT, Excelsior Ridge Thrust Fault
STRAIGHT CREEK ENTIAT FAULT ZONE F' FAULT ZONE F F" Neve Glacier METERS THUNDER LAKE FAULT RUBY METERS Big Devil MOUNTAIN 3000 I''-I''' 3000 HELEN BUTTES Tksbg
SECTION Peak 2500 TKsbg 2500 ERT TKsn TKns TKso Skagit River Skagit TKsbg Skagit River Skagit TKns 2000 Bacon Creek TKho TKso BEND IN TKsbg 2000
TKnu TKns SECTION
bv TKso Creek Newhalem Jackman Creek Jackman 1500 byan Qu KJb Ked Kes River Skagit TKns TKns TKsbg Thunder Creek 1500 CONCRETE Knu TKao TKsbg PDcv TKso 1000 PDc Ked TKns 1000 PDc Qu Ked Kns Kes byan Kes Kmd TKns Qu Qu 500 Tys byan KJb Qu Qu Kcs 500 Qu Qu SEA LEVEL TKso SEA LEVEL 500 ERT Tcdg 500 KJrs 1000 1000 PDcl Knu 1500 1500 A T 2000 2000 500 meters = 1640.4 feet Qu, Quaternary deposits undivided. Thin unconsolidated deposits not shown ERT, Excelsior Ridge Thrust Fault Horizontal movement on strike-slip faults: A, away; T, towards
STRAIGHT CREEK ENTIAT FAULT KULSHAN G FAULT ZONE G' G" H CALDERA H' McAllister Klawatti B-B' METERS METERS METERS BEARPAW BAROMETER C-C' MOUNT METERS
SECTION Glacier Glacier SECTION
3000 3000 3000 MOUNTAIN A'-A'' MOUNTAIN ANN 3000
SECTION TABLE 2500 2500 2500 MOUNTAIN 2500 North Fork River Nooksack
BEND IN TKeb SECTION TKeb TKsgp Pcmv
Canyon Creek Qbcp 2000 2000 2000 2000 Irene Creek Irene TKcs PDcv KJng Qbtm Tcml Pcms TKns Pcmv Pcms ANDERSON CREEK FAULT KJna KJna Qbcp Shuksan Creek 1500 Thunder Creek 1500 1500 Cascade River Marble Creek TKso PDcl 1500 TKef TKsbg KJna Swift Creek Pcmv ST
Kmd Kmf Qkig River Baker TKnu PDc 1000 1000 1000 Jnw Qbpl 1000 Skagit River valley Kmf Qu KJb Ked Knu Kcc Qu Kes Kes Kns Kns byag Ked Kes 500 Qu 500 500 500 Qu Qu SEA LEVEL SEA LEVEL SEA LEVEL Tcla SEA LEVEL Qkrl 500 500 500 Qkmb 500 bv 1000 Kcmv 1000 1000 1000 Kcs 1500 A T 1500 1500 1500 A T 2000 2000 2000 2000 500 meters = 1640.4 feet 500 meters = 1640.4 feet Ked Qu, Quaternary deposits undivided. Thin unconsolidated deposits not shown Qu, Quaternary deposits undivided. Thin unconsolidated deposits not shown Horizontal movement on strike-slip faults: A, away; T, towards ST, Shuksan Thrust Fault
SEWARD PEAK I I' I" I"'
METERS C-C' METERS SECTION
3000 MARMOT N D'-D" 3000 RIDGE
B-B' SECTION E-E'
BEND IN
SECTION SECTION
2500 ANDERSON CREEK FAULT
BEND IN F-F' North Fork 2500
SECTION SECTION A-A' Deming Glacier
Nooksack River Nooksack byag Rocky Creek Rocky WPT SECTIO
LOOKOUT MOUNTAIN LOOKOUT J^cd 2000 SECTION Qbbb 2000 Boulder Creek byag Qbv J^cd JACKMAN RIDGE Kjs GEX Qu Qbv WPT Lake 1500 Tc WPT GEX? 1500 Canyon Creek KJb PDc KJb bcs Tc KJna Qbsc Shannon
Qu J^cd Creek Jackman 1000 Qbsc PDc 1000 GEX KJna Qu Qu 500 Qu KJnt KJna Qu 500 SEA LEVEL SEA LEVEL byag KJb Kjs 500 500 GEX PDc PDcv Jnw KJna 1000 1000 byag 1500 ERT 1500 KJna? byag WPT 2000 2000 500 meters = 1640.4 feet Qu, Quaternary deposits, undivided. Thin unconsolidated deposits not shown GEX, Glacier Extensional Fault; WPT, Welker Peak Thrust Fault; ERT, Excelsior Ridge Thrust Fault
A B C D 122° 121° 122° 121° 122° 121° 122° 121° 49° 49° 49° 49° Mt Mt Mt ° 123° BRITISH COLUMBIA ° ° 120° CANADA Tomyhoi Silesia Creek Mount Mount Silesia Creek Mount Silesia Creek Mount 49 122 121 Spikard 20 Silesia Creek Spikard Spikard 54 WASHINGTON Red Mtn Peak Hozomeen 30 Hozomeen 46 Hozomeen Hozomeen MOUNT ROBINSON QUESNELLIA TERRANE USA 49° Ross 14 r Ross Mt 22 e Tomyhoi Tomyhoi GOLD RUN PASS NAPPE
STRAIGHT Tomyhoi Vedder Mtn r 29 v r r BAKER MOUNTAIN P Lake i Lake Spikard A e Peak e 39 Peak e (Parts of autochthon and lower nappes) S v Peak R v v 7 i i i A METHOW TERRANE k R R T R reek c reek reek reek T C r C r C r C Bellingham Mount Baker k ver rk Nooks a ve Nooksack Riv k ve k ve E o Ross 3 c 10 Bea 23 N F ack Bea Fork er c Bea 58 c Bea N a w N a a r 1 tle Ri li ttle 33 ttle ttle ive ROSS iw Lit ve il Li iw Li iw Li Lake Bowman t R N ll r h ill ill GOLD RUN PASS THRUST FAULT (GRPT) gi Fo hi C h N Fork Nooksack h Mtn a N rk C 26 C Riv C Sk FAULT ook 9 35 Ross er ENTIAT sa 14 Glacier SHUKSAN NAPPE San Juan CHELAN MOUNTAINS TERRANE Glacier Riv ck Glacier Glacier Lake er Mt (Easton Metamorphic Suite) Islands LAKE 21 28 34 Mt Challenger 12 Mt Challenger Mt Challenger Shukan Mt Challenger Sedro Mt Shukan er 52 57 19 44 Riv SHUKSAN THRUST FAULT (ST) Woolley Mt Shukan r ig Beaver 32 Mt Shukan r r ig Beaver 41 r ig Beaver FAULT FAULT ve B C ve ke B C ve B C Haystack Mtn S TWISP Ri re Ri a re Ri re a ek B ek ek WELKER PEAK NAPPE u er er er k ak 8 Mount ak ak D r B B ig Beaver 42 Mount B (Bell Pass mélange) ARR e Baker B C ING v re TON i ek 53 Baker - DE R Mount Mount Mount WELKER PEAK THRUST FAULT (W VIL PT) S ? 27 36 Baker ish Darrington Misch Baker Baker 24 Baker Baker Mt Despair PUGET llguam Mt Despair Lake Mt Despair EXCELSIOR NAPPE Sti R CREEK k Lake SO M i Lake e Mt Despair 44 55 O v k e k 56 (Chilliwack Group of Cairnes, 1944; Cultus Formation of Brown and others, 1987) U Olo Mtn e e r k e U r 25 e N e er 45 e C v 43 e r D N r i r T R EXCELSIOR RIDGE THRUST FAULT (ERT) C n C A 6 14 Baker C Glacier o I Bacon r N r r n r n SAUK e e c t e Bacon e i n Peak v o v Lake a v v o F i i g i i AUTOCHTHON o
° RIVER Peak c a Bacon c
B 50
A Bacon R R R c
48 NASON TERRANE R T k Peak a 11 a
U ° Newhalem Newhalem Newhalem T
48 h S Newhalem a
k k k k 48 (Nooksack Formation and Wells Creek Volcanic Member)
B
4 B Peak
L u h
c c c c Peak B
T CHELAN n u
a a a a 14 r
d e n s s FAULT ZONE s
Z s Snowfield
e iv d
k
k k O k 31 Snowfield
Olympic MARBLEMOUNT- Snowfield r 49 Snowfield R e
o o o N DUMBELL BELT o 14 r Peak r Figure 5. Diagram showing major nappes, thrusts, and units of the Northwest E o Chiwaukum Graben o Peak o Peak e Peak o o r C or 18 or iv or Mountains F rk N e F k N F k N F k N C S iv r S T S R T S Cascade System in the Mount Baker quadrangle. Abbreviations are used on the Seattle R e h h r e u u e k n n 51 e cross sections. Skykomish d d k t e e 57 i 16 r t r g i a 17 14 g t k 14 Eldorado a 32 i C C g S Eldorado 13 k Eldorado Eldorado S a Peak r r e 38 k SKYKOMISH 5 Concrete 14 Concrete e Concrete e Peak S scade River Peak Marblemount 47 Marblemount scade River e ascade River Peak Marblemount a Concrete k RIVER C Ca k C Skagit River Skagit River Skagit River Skagit River INGALLS v TERRANE 2 Cascade R 15 40 37 Marblemount Y 48°30' 48°30' 48°30' 48°30' a k i m a A. Much data used with little to modest modification B. Some data used C. Consulted extensively but data not used on map D. Mostly shown for historic value 1 Carpenter (1993, plate 1) 11 Blackwell (1983, plate 1) 24 Leiggi (1986, plate 1) 37 Bryant (1955, plate 48) 50 Bechtel (1979, appendix H, sheet 1) DDMFZ d R 2 Dragovich, J.D. (written commun., 1992) 12 Brown and others (1987) 25 Misch (1979) 38 Christensen (1981, plate 1A) 51 Cook (1947, plate 20) n iv la er w 3 Franklin (1985, plate 1) 13 Cary (1990, plate I) 26 Moore (1972, plate 1) 39 Grant (1969, fig. 21) 52 Coombs (1939, fig. 2) o L SNOQUALMIE PASS WENATCHEE 4 Haugerud (1980, plate II) 14 Danner (1966, figs. 117, 126, 27 Rady (1980, plate 1) 40 Heller and Dethier (1981, fig. 2) 53 Crickmay (1930) 47° et ° ug 47 P C 5 Heller (1978, plate B; 1979) 127, 129, 137, 138, 139, 143, 145) 28 Riedel (1990, figs. 1, 2) 41 Kriens (1988, plates 1-5) 54 Daly (1912, sheets 15 and 16) o
l Mount Rainier u 6 Hildreth and others, 2003 15 Dragovich (1989, plate 1) 29 Tepper (1991, fig. 11.2) 42 McCleary and others (1978, 55 Misch (1966, plate 7-1) m b 7 Sevigny and Brown in Sevigny (1983, plate 1) i 16 Dragovich, J.D. (written commun., 30 Shideler (1965, plate 1) figs. 4, 5, 15) 56 Russell (1900, plate 9) a
R 8 Staatz and others (1972, plate 1) 1993) 31 Smith (1986, plate 1) 43 McKeever (1977) 57 Smith and Calkins (1904, plate 1)
Columbia River Basalti Group v
0 10 20 30 40 MILES e 9 Tepper (1985, plate 1)
r 17 Frasse (1981, plate 1) 32 Sondergaard (1979, plate 1) 44 Misch (1977b, figs. 2, 3, 4) 58 Vonheeder (1975, plate 2) WASHINGTON 10 Tepper (1988) 18 Fugro (1979, enclosure 1) 33 Staatz and others (1971, plate 1) 45 Ragan (1961, plate 1) 0 20 40 60 80 KILOMETERS Area of Figure 1 19 James (1980, plate 1) 34 Wallace (1976, plate I) 46 Riedel (1988, fig. 13) 20 Jewett (1984, plate 1) 35 Ziegler (unpublished map for 47 Robertson (1981, plate 1) ° 122° 121° ° 123 120 21 Johnson (1982, plate 1) U.S. Forest Service, 1985) 48 Smith, C. L. (1961, plate XII) Figure 1. Regional overview of geologic setting for the Mount Baker quadrangle showing major terranes 22 Jones (1984, plate 1) 36 Ziegler (1986, plate 1) 49 Tepper (1991, map 1) (named), metamorphic units of the North Cascades crystalline core (coral), rocks of the Northwest Cascade 23 Jones and others (unpublished map, System and melange belts (pink), Tertiary terranes and onlap units (brown), and Quaternary deposits (yellow). U.S. Forest Service, 1984, plate 1) The eight 1:100,000-scale quadrangles of the Concrete (on the north) and Wenatchee 1° x 2° sheets are named. DDMFZ, Darrington-Devils Mountain Fault Zone. Figure 3. Sources of map compilation data.
Geologic Map of the Mount Baker 30- by 60-Minute Quadrangle, Washington By
For sale by U.S. Geological Survey, Information Services, Box 25286, R.W. Tabor, R.A. Haugerud, Wes Hildreth, and E.H. Brown Federal Center, Denver, CO 80225, or call 1–888–ASK–USGS
Printed on recycled paper 2003 Available on World Wide Web at http://pubs.usgs.gov/imap/i2660