GEOLOGIC MAP OF THE DIVISION OF GEOLOGY AND EARTH RESOURCES

BELLINGHAM 1:100,000 QUADRANGLE, WASHINGTON Raymond Lasmanis, State Geologist

Geologic Map of the Bellingham by 1:100,000 Quadrangle, Washington Thomas J. Lapen Open File Report 2000-5 2000 Plate 1

Scale 1:100,000

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MILES

CONTOUR INTERVAL 200 FEET EXPLANATION

R2W R1W R1E R2E 122°30¢² 00 R3E R4E R5E R6E 122°00¢² 00 CHILLIWACK GROUP Qgos pDgny Qgo 123°00¢² 00 s 50 50 Geologic Units Qp Qgos Qp Qgts Qp Judson 49°00¢² 00 49°00¢² 00 PDms 40 PDhm PDhmc Chilliwack Group, undivided (Permian to Devonian) Lake Qp c c T41N T41N Qgdm Qls Qgts 60 Qf Blaine e Qgom Sumas Qa PDhmc QUATERNARY DEPOSITS ee 80 PDmv Metavolcanic rocks (Permian to Devonian) Qp Pangborn Qgt 1000 Qls c Qgo Lake s OUNTAIN Qgd Post-Glacial Deposits s 539 Qp 50 PDmb Qp 70 100045 c PDms Metasedimentary rocks (Permian to Devonian) Qb Qp Qgos 50 50 c PDmsc SEMIAHMOO Qf Artificial fill (Holocene) 9 40 Qgdme Qp PDhmc Qgd PDmbc Limestone and marble (Permian to Devonian) Qgdme VEDDER75 M Silver Qgdm 75 e Qgo 0 OEc Lake BAY s 45 14 h 70 Qa Alluvium (Holocene) Qp 15 Qaf pTmsb Northwest Cascades System: 16 PDmsc Qgd Qls 4000 Rocks of the Qgts Qgd 80 Qaf Qb Beach deposits (Holocene Qgos COLUMBIA VALLEY PDhmc PDms 53 PDms c PDmsc 546 1112 c PDms 3000 Qoa Older alluvium (Holocene) KJmc Constitution Formation (Cretaceous to Jurassic)—Marine sedimentary rocks Qls c 35 PDhm Qgt 13 c Qp Qgo s Qgd 60 Qgo Qls s Qgdm pDgny 1000 s e pDgny Qgos PDmbc Fidalgo ophiolite 40 45 2000 Qvl Lahar of the Middle Fork Nooksack River (Holocene) Qgom BLACKpThmc MOUNTAINb m ee PDmvc pTmsb Qgdme 45 41 65 PDms RED MOUNTAIN OEc JPhmc c PDmvc KJm Marine sedimentary rocks of the Fidalgo ophiolite (Lower T40N Qgo Qp h e 1000 T40N Qvl Lahar (Kennedy Creek assemblage) (Holocene) f s Qgt PDms 80 k s c OEc 2000 Cretaceous to Upper Jurassic) Qgo Qgd h 2000 Qaf s pPhm Qgos 1000 50 v Qp PDms pDgny Qgt Qaf Alluvial fan deposits (Holocene to latest Pleistocene) Qgdm Qgo 548 Lynden c 30 e s Qp PDmb Jif Intrusive igneous rocks of the Fidalgo ophiolite (Jurassic) Qaf c Qls 30 Qp 9 OEch JPhmc Qls Qb Qgdm 539 PDms e 30 85 Qls Landslide deposits (Holocene to late Pleistocene) e Qgo Qls c 80 Qp s PDmb PDhmc Qgd Juf Ultramafic rocks of the Fidalgo ophiolite (Jurassic) c 60 45 Qgdm 63 pTmsb 103 Qls e Qgd PDms 2000 2000 Qgd Qp Peat (Holocene to late Pleistocene) c Qaf PDms pThmc b Ec Lummi Formation Qa Qp c cw Qp PDmsc Maple Falls Qa Qoa 5 Qp Qp Qa pTu Qgd 542 Qp 35 55 Glacial Deposits Qp pTms Kendall Qgo KJmml Lummi Formation (Cretaceous to Jurassic)—Marine metasedimentary BIRCH Qgos b 37 s Qls Qgo rocks Qa Qgo Qaf 37 s s OEch PDmsc Qls Fraser Glaciation, Undivided Qp Qgos Qp Qgt Qgd BAY Qp Jmtl Lummi Formation (Jurassic)—Metasedimentary and metavolcanic 45 Eccp Qoa Qgd Glacial deposits, undifferentiated (Pleistocene) Qgo Qgo Qp OEch pDgn rocks s s Qgo Qp y Qp Qgos s Qls Qaf Eccs Qoa 3000 Qoa Wiser Lake Qls pTu Qls Fork Qgo Glacial outwash, Sumas Stade and (or) Everson Interstade (Pleistocene) pTu Qls es OTHER ROCKS OF THE SAN JUAN ISLANDS Qa Qp 35 40 pTu 30 Qls Ec Qa Qgos cs STRAIT OF GEORGIA Qgos Qf Qoa Qp Qgo 60 60 Fraser Glaciation, Sumas Stade s 35 JTmctR Orcas Chert (Jurassic to Triassic)—Chert-rich marine sedimentary rocks Qgo pTu o s Qgos Ec Eccs Qgo Qgo Glacial outwash, Sumas Stade (Pleistocene) Qp Qgos cm e 55 60 s Qgomee Qgt 60 542 Qa 55 TPvR Deadman Bay Volcanics (Triassic to Permian) 548 544 SLIDE MOUNTAIN d Qgos JPhmce OEc h 45 Ec 45 Qgom Marine deltaic outwash, Sumas Stade (Pleistocene) Eccp Qaf 99 100 cs 80 s 35 101 PDvse East Sound Group (Permian to Devonian)—Volcanic and sedimentary rocks Qgdm Qgomee Qgom 40 e ee River Qp Nooksack 102 80 35 Qgts Glacial till, Sumas Stade (Pleistocene) Qp Qgd Eccm Qgt Qls pPscg Garrison Schist (pre-Permian) Qp 114 9 OEc Qp Qgos h Fraser Glaciation, Everson Interstade Qgdm Qa 43 Qgt 60 40 e 10 pDi Turtleback Complex (pre-Devonian)—Intrusive rocks, undivided Qls t Qp 2000 Qgoe Glacial outwash, Everson Interstade (Pleistocene) Qgdme Qgdme 65 Lake Qgos 70 80 Eccs tz Tectonic zone 70 20 Ec T39N Terrell Ec cb 75 T39N Qgom Marine outwash, Everson Interstade (Pleistocene) Qp Eccp Qgdme Qa cs e PDhm SUMASEccp MOUNTAIN Qp c 40 tz Tectonic zone on Qa 20 21 45 o Qgos Ferndale 19 Eccm 70 Qgomee Emergence (beach) deposits, Everson Interstade (Pleistocene) Qb 30 18 70 50 Qp 17 80 Eccs Qgos 65 Qls Qgdme 8 Jph Qls Qa 80 j 65 Qgdme Glaciomarine drift, Everson Interstade (Pleistocene) Ec Qgos Qls North Ec Geologic Symbols Qgdm cp Qls cs 45 Qp Qgdme e PDhm c 45 Qgo Eccs Qls Fraser Glaciation, Vashon Stade 1000 s Qgd 50 Jph Qgt Qoa Qp j Qls Qa 50 Qgt Glacial till, Vashon Stade (Pleistocene) Qgdm Nooksack 542 Qgt Qgdm Contact e e Qaf 60 Qgdme Qa Ec Qls Qa 539 9 Qaf 60 Qgt cs Qls Qgd Ec Qgd 4000 Qgdm cp 25 Qga Advance outwash, Vashon Stade (Pleistocene) Qgom e River Qls Qaf Contact, concealed ee Qaf Qa Qvl 3000 Qvlm m 30 Ec Fraser Glaciation, Evans Creek Stade Qgd 3000 Eccp 50 cb 45 Contact, gradational Qvl 65 40 Qa Deming m Qat Alpine till, Evans Creek Stade (Pleistocene) Qgdme e Qgdme Contact, scratch boundary 90 Qls 55 Qgo Ec Eccb s Qa cb 65 Pre–Fraser Glaciation 20 Qgd Ec Qgos Qa Ec Qa cp 50 Fault, unknown offset Qa 542 cp Qgos Qc w Continental sediments, Whidbey Formation (Pleistocene) 35 Qls 55 Fault, unknown offset, concealed Ec Qvlm Eccb 10 cb Qls Qgdme Eccp 20 50 40 50 Qa Jphd TERTIARY ROCKS ? Fault, unknown offset, concealed, queried 25 Ec 1000 45 Eccp cb Qp 55 35

Qgd Qgt South 35 30 1000 Middle Fault, unknown offset, inferred Qgos 41 Eccp Qp 20 Eccb Eir Rhyolite dikes (Eocene?) 5 35 30 113 Qa 38 Qls 60 Patos Island Qb Qa 40 Qgo 20 30 Qgo Thrust fault, sawteeth on upper plate Ec Eccp Qgo s 10 s 40 OEc Huntingdon Formation (Oligocene to Eocene) cp s 35 50 h

Qgd Qgos Qgd Jphd 2000 Fork Thrust fault, concealed, sawteeth on upper plate Eccp 112 Qgd Chuckanut Formation (Eocene)—Continental sedimentary deposits or rocks 50 45 Qgdm Qa 60 Qgo e Ec Qgd s Fork T38N Qa cp Qls 3000 T38N LUMMI SQUALICUM 1000 20 2000 Qls Thrust fault, inferred, sawteeth on upper plate MOUNTAIN 50 48 Qls Ec Eccb Bellingham Bay Member Qaf Ec Qls cb 70 LUMMI 35 cb Sucia Island Qgdm 15 5 e 20 Normal fault, concealed, bar and bell on downthrown side Eccp BAY Qgdm 40 Qls 67 Qgt Eccg Governors Point Member Eccp e Qgo 25 Jphd Eccp INDIAN s Qp 70 Qgo 20 46 Qgdme Qgo e Qgd Ec 55 Qgom BELLINGHAM s Qa Ec Slide Member Anticline Eccp 24 cp ee 15 30 cs 28 Qgoe Eccp RESERVATION 15 Jph PDmsc 110 Jph d 72 50 60 50 Qa Qaf d Qls Qgt pDgny Ec Warnick Member Anticline, concealed 37 cw Eccp Qgd Qls Nooksack 96 2000 Qf 45 JPhmce 48°45¢² 00 Ec Ec 25 VAN ZANDT DIKE pDgn Anticline, inferred 48°45¢² 00 Kmnc Ec cp 61 cp 33 BELLINGHAM Ec y PDms pPhm Ec Maple Falls Member Qgd 91 cp Qgd LAKE WHA cp c v cm Qgdme 83 30 2 62 57 Jmtl Qgd 3 Kmnc 92 Qgomee Ec Eccp Ec cp 35 4 Syncline Km 93 65 cp 48 Qgd Ec Padden Member np 56 Qgd 57 Eir BAY 30 Qaf 9 cp Eccp 58 30 35 Jmt 36 Matia Island l Eccb Qaf Qgdme 50 JPhmce Syncline, concealed Qb 20 Qls 4000 PDms 35 Qgdme Qgd 24 60 Jphd Jphd c Qgom Eccp 35 TCOM PRE-TERTIARY ROCKS ee 111 35 Qgt Syncline, inferred Qgom 75 4000 ee 40 35 Qaf 40 Qb 35 Qgd 15

Eccp

Eccp NANAIMO GROUP ? 40 Qgdme 55 pTuts 25 Eccp River Qgd 15 Qb Jphd 55 60 10 Jphd Km Cedar District Formation (Upper Cretaceous)—Marine sedimentary rocks Qaf 4000 nc Strike and dip of beds Ec Qgom Eccp 20 30 cp ee Ec 1000 pDgny Kn Kmnh cp Ec 45 ne Knnc 81 cb Qb 50 2000 Km Protection Formation (Upper Cretaceous)—Marine sedimentary rocks Kmnh Knnc 16 60 25 Jph 65 JPhmc np Strike and dip of overturned beds 94 Qb d 36 e 30 Knne 50 54 Jif 38 50 95 90 11 55 59 26 12 46 PDms 89 Qgome Kn Ec 25 Qaf c Kn Extension Formation (Upper Cretaceous)—Nearshore sedimentary rocks ne Clark Island Qgd 30 cb 27 1000 ne Strike of vertical beds 53 3000 90 90 Jif Portage Island Qa 32 10 pDit 25 Lake 109 LOOKOUT MOUNTAIN 61 Jph 50 Kn 37 Qgom Ec 70 d 60 Km Haslam Formation (Upper Cretaceous)—Marine sedimentary rocks Knne ne Qgd ee Qgd Padden 35 50 cb 90 nh 80 Qgd Qgd 55 7 Qaf 0 Horizontal beds Qb 52 Barnes Island 30 Jph Qgd 63 Km 50 pDi 38 ? 25 d nh t 65 97 tz tz 79 50 25 Qgt 70 50 Qgom Qf 30 108 30 BLUE MOUNTAIN PDvs PDvse 98 ee 55 Qgo pDgn Knnc Comox Formation (Upper Cretaceous)—Nearshore sedimentary rocks 72 e 75 e y 55 Strike and dip of foliation 50 66 Knne 55 Qa Qa T37N 68 PDvse 75 15 T37N Kn 60 Jphd ne 74 1000 57 40 4000 73 TPvR d 67 61 75 25 55 55 1000 Qgo Northwest Cascades System: Strike of vertical foliation pDi Ec Qls e 88 Qgt 35 55 PDvs t 75 cp 62 30 e 80 2000 Jph Rocks of the Northwest Cascade Range TPvR pDit d Qgt Qgd d PDvs LUMMIKJmm I 45 107 48 24 pDgn 55 69 28 2000 e l y Bearing and plunge of lineation pDi 45 Qls tzo t 1000 90 JPhmc pDit PDvs 70 43 Ec Ec 30 65 e HETEROGENEOUS METAMORPHIC ROCKS e JTR mct cp cb 35 Qgt pDit o Qgd Qga 55 64 26 55 1000 Qga Bearing and plunge of fold in foliation Qgt 45 KJmm KJmml Qgoe OF THE BUTLER HILL AREA 50 50 l Jphd 30 2000 3000 pDi 80 Ec 61 Eccb Qgt Qgt cp SamishQaf 2000 PDvse t SLAND Jph Qgoe Qgt 30 1000 39 20 60 82 75 63 d Qgt JPhmce 10 JTR mct 45 35 105 30 42 65 Jph Jhmc Heterogeneous metamorphic rocks (Jurassic)—Chert-bearing meta-argillite Age date sample, radiometric 63 65 1 o pDi Jmt 55 CHUCKANUT MOUNTAIN 106 Qgd 5 d 15 t 56 l Eccg 35 Qgt Qls 71 Lake Jph 50 and metasandstone 1000 Qgd d 10 KJm 30 Jsh pDi 45 c Ec s 59 20 75 Age date sample, fossil t 51 cg Qaf 29 KJmm 63 10 65 Jphd Jph Jmv Heterogeneous metavolcanic rocks (Jurassic)—Metabasalt pDit JTR mcto 46 l Eccb 76 d Jph 45 j pDgn PDvs pDit 20 45 Qgd y Outcrop too small to show at map scale e 30 Qgd Qgom 75 25 25 Qgt 4000 22 Qb e Jphd 37 Qls Qgt EASTON METAMORPHIC SUITE pPscg 70 Jsh 35 pDit 84 KJmml Eliza 50 s 60 31 44 pDit KJmc Island 1000 35 Qgd 23 Qgd 62 River Qgt pDi KJm KJmm Jphd Darrington Phyllite (Jurassic) Qgt 60 t KJmc c l Qgt 25 75 54 JTR mcto 25 30 Qgd Jmvs JTR mcto tz 78 59 60 50 KJm 15 10 41 Qa Jph Jph Semischist of Mount Josephine (Jurassic) c 2000 d ORCAS ISLAND 65 Qgom 1000 60 Qls Qa j KJmm Ec e

JTR mct tz l cb 24 3000 pDit pDit o 80 40 41 20 40 Ec 60 72 Qls Jph Jsh Shuksan Greenschist (Jurassic) Qgd cb Qgdme Qgt 40 d s JTR mcto KJmc 55 Qgt 2000 44 Qgo JTR mcto KJm KJmm Qb KJmm Jigb e Jph Jph 4000 c 1000 JTR mct l l s 35 d j pDit o Jph Qgd Qgt Lambert Conformal Projection 50 KJm 40 Qgt d Qgt 48 Qgt Jmv Metabasaltic greenstone c 79 65 Qgt Qgt 38 1000 s JTR mct 78 JTR mct 60 55 52 43 30 1927 North American Datum o o 15 40 Jph 30 Jph KJmm SINCLAIR Qgt 51 Qgdm Jph Qgo d 30 j Washington Coordinate System, South Zone KJmc l 70 e Qgt j Qa Qgt LYMAN HILL e KJmc 40 ISLAND Jphd Qat 40 Qb 104 Jmvs Jphj 50 Qga e Jigbs Metagabbro and metadiorite/quartz diorite Base map information from the Washington Department of Natural Resources 80 Jph Qgo Qgt Qgoe Qgd JTR mct Qgdm j e 1000 o KJm KJmm e 75 Jph 46 Qaf Jphd Qgo Jph Qls Geographic Information System – 1997 77 c l KJmm Qgt Jmt 65 d 24 Jph Jph 43 e d 50 l l Qgt d ANDERSON MOUNTAINJph d Qgt 10 Qgt KJmml Jphd d Qat 40 ROCKS OF THE BELL PASS MÉLANGE Washington Division of Geology and Earth Resources 25 30 Qgt 80 33 40 e JTR mcto KJmm Qgt Vendovi 1000 Jsh 9 4000 Qgt l Jmvs Qgome Jph Qgt s Qgo 60 70 j 76 Qaf es 32 Qgt Qgoe Jph JTR mcto KJmc 35 JTR mct KJmml KJmml Jmt Island Jmv Qaf 10 Qgt j pThmc Bell Pass mélange, undivided (pre-Tertiary) This product is “as is” without warranty of any kind, either expressed or o KJmml 45 Qgt l Qgt s Qgo 50 Qa Qgt b Qgom 30 Qgo 81 e Qga JTR mcto 30 JTR mcto 25 46 e e 88 10 Qgt implied, including, but not limited to, the implied warranties of merchantability T36N KJmc 14 Jigb Qga T36N KJmml Jphd 35 s 8 Qgt Qgom Qgt 65 Qate Qgo and fitness for a particular use. The Washington Department of Natural 45 Jphd e 5 Qgt e pTu Ultrabasic rocks (pre-Tertiary) Qgd Jmv Qgt Qa Qga Resources will not be liable to the user of this product for any activity involving KJmc Jmt Jmv Jph s 3000 34 Qga Jph Crane Qgd 88 l s Jigbs d 65 Qgd j KJm KJmml SAMISH Qgom the product with respect to the following: (a) lost profits, lost savings, or any

Island c 87 Obstruction KJmm Qaf e 4000 Qgo 1000

KJmc KJmc l Qgome Jphd e pTu Twin Sisters Dunite (pre-Tertiary) KJm tz ? Jph 33 Jph 55 ts other consequential damages; (b) the fitness of the product for a particular c 30 86 Island 13 d Qaf 50 28 d Qgt 55 Jphd 25 purpose; or (c) use of the product or results obtained from use of the product. 15 KJm BAY Qgdme Qaf 42 Qls 2000 f Jmtl Qcw Qgo Jph KJmf Jph e d Qls 65 45 pTmsb Conglomerate of Bald Mountain (pre-Tertiary)—Metasedimentary rocks KJm Jmt Qgt Jack d Qgt Qls Jph 3000 c l Qaf Jshs j JTR mcto Qb Qb Island Qgome Qgt 80 Qp Qb 41 Qa Qaf 39 Jsh 40 50 1000 KJmm s 76 KJm tz Ju l 24 Qgt Jigb JPhmce Elbow Lake Formation (Jurassic to Permian)—Heterogeneous metamorphic c f Qgt Qga s Qls 60 Qgome Qga Qgom Qgoe Qgt JTR mcto Qgd Qgt e Qgos Qa Qgt rocks Qgt Samish Qga SHAW Qga Qb Qgt Qgos Qgo 30 80 19 70 Qgt Qga s Jsh Qgd Qb Qb Qgome Qgdme s Qgt 2000 Qgt ISLAND Juf Qgt Qgdm 65 Jph Jph pPhm Vedder Complex (pre-Permian)—Schist pPsc Qgt Qb e Jph d 65 d v g Qgdme Qgt Qgdm Qls d 27 23 KJm BLAKELY e Qgt Qa Qgt Jmv 23 c Juf CYPRESS Qb Qgome s 42 32 KJm Qa Qgt Qgom Qgdm Qls pDgny Yellow Aster Complex (pre-Devonian)—Gneiss KJmc f ISLAND Qgdm e e Jmvs 50 5 KJm ISLAND Qa e Qgt Qgo Qgt Jphd 6 f Qcw s Jph Qga Qb Qp Qaf d Qgt 40 40 KJm Jif 42 Qgt 70 55 90 f Qgdme Qb Qgt Jph 7 1000 Qgdm Qp Jsh d Qgt JTR mct KJm 50 e Qgo s Qgt o c 45 KJmf Qgt Qb s Qgdm Qga Qb Qaf Qa e Jmv Qgo 77 Qga Qgd Canoe Juf 80 e Qgo Qgt 61 KJm Qb Qgome e Qls Qgt c Island 9 Qgom 35 33 35 Qgoe Qb Qb Qp tz e Jshs Qga Juf 80 Qgt Qga Ju GUEMES Qp 85 Jphd KJmf 44 Jif f Qgom Eccb e Jmv Qgome Juf 11 58 Qgt Qgt Qgdm ISLAND Jif Qgt Jhmc 50 Qgo Qgt Qls Qgome e Frost Qgo e Qgd Jif s Jhmc Jif Qgt Qgdm Qgos Island Ji e 69 Qgdm Qaf Qgom Qgt 43 Qgdm Qgt f e Ec e KJmc Turn Qb Jif e Ji Juf Qgt cb Qaf Qgt f Qgos Jmv Qgome Qgom Qaf 45 Jif Qgome Qgt Qgdme e 35 Qgome Qgt Qvlk Island Ji Samish Qgt Jmv 36 Qga Qaf Qvlk Qgt f Qga Qgomee 34 KJmc Qgdme Qgdm 50 60 Eccb Qgt KJm KJmml e Jmv c Qb Qp Qvlk Qgoms Qaf Qvl Qgd Qa Jphd k Lyman San Juan Qgd Qp Qaf Qvlk Qgdme 40 65 Hat RiverQa Qgomee Island KJm Juf Qp Qgd c Qgoms Qgt Qgome Qb Qgd KJm Island Jhmc Qga Qgome Qgt f Qa 48 KJm 20 River Jif f 40 Skagit T35N KJmc T35N KJmml James KJmml Qa KJmm DECATUR Qa Qgt l 15 65 Island Qc Anacortes 50 Qvlk Qa w Qp Qgd ISLAND KJmf 49 Qgdm Qls LOPEZ KJm Qgdme PADILLA e Qgom KJm 50 f Qf ee Qgdm f Qb Sedro-Woolley Qb e ISLAND KJmm Jmtl Qb l Qgt Qgom Qvl Qgo 85 Qgom Qvl Qvlk e k e BAY ee Qgdme Jmv k Qga Ju KJmf Qvlk Qa Qgom Qls Ec KJm KJmf f Qgt Ji Qa Qgt Qgdm Qgom e cb 48°30¢² 00 48°30¢² 00 Qgt f f e e 33 122°00¢² 00 123°00¢² 00 R2W R1W R1E R2E R3E R4E R5E R6E 122°30¢² 00