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wtr --- water ---
Qa Holocene alluvium ---
Qd Holocene dune sand ---
Qls Holocene mass-wasting deposits, mostly landslides ---
Qgd Pleistocene continental glacial drift, Fraser-age mostly Vashon Stade in western WA; unnamed in eastern WA
Qgl Pleistocene glaciolacustrine deposits, Fraser-age mostly Vashon Stade in western WA; unnamed in eastern WA
Qgo Pleistocene continental glacial outwash, Fraser-age mostly Vashon Stade in western WA; unnamed in eastern WA
Qgt Pleistocene continental glacial till, Fraser-age mostly Vashon Stade in western WA; unnamed in eastern WA
Qoa Pleistocene alluvium, older ---
Ebx(k) Eocene tectonic breccia Klondike Mountain Formation
Ec(k) Eocene continental sedimentary deposits or rocks Klondike Mountain Formation
Ec(o) Eocene continental sedimentary deposits or rocks O'Brien Creek Formation
Ei Eocene intrusive rocks, undivided ---
Eia(f) Eocene acidic intrusive rocks Fifteenmile Creek pluton
Eian Eocene intrusive andesite ---
Eian(r) Eocene intrusive andesite Republic, andesite and basalt near
Eib(k) Eocene basic intrusive rocks Kettle Falls, basic intrusive rock near
Eib(t) Eocene basic intrusive rocks Toroda, basic intrusive rocks near
Eida Eocene intrusive dacite ---
Eidaa Eocene intrusive dacite and andesite ---
Eidaa Eocene intrusive dacite and andesite ---
Eig(h) Eocene granite Herron Creek suite
Eig(o) Eocene granite Orient, granite near
Eig(u) Eocene granite U S Creek, granite near
Eigd(b) Eocene granodiorite Barstow granodiorite
Eigd(h) Eocene granodiorite Herron Creek suite
Eii Eocene intermediate intrusive rocks ---
Eik Eocene alkalic intrusive rocks ---
Eim(h) Eocene monzonite Herron Creek suite
Eim(ho) Eocene monzonite Hodgson Creek monzonite
Eimd(h) Eocene monzodiorite Henry Creek monzodiorite, Devils Elbow suite
Eimd(k) Eocene monzodiorite Kettle Crest pluton, Devils Elbow suite
Eiqm(d) Eocene quartz monzonite Deep Creek, quartz monzonite near
Eiqm(h) Eocene quartz monzonite Herron Creek suite
Eiqm(k) Eocene quartz monzonite Kerry Creek, quartz monzonite near
Eir Eocene intrusive rhyolite ---
Eitr Eocene intrusive trachyte ---
Evc(k) Eocene volcaniclastic deposits or rocks Klondike Mountain Formation
Evd(k) Eocene dacite flows Klondike Mountain Formation
Evd(s) Eocene dacite flows Sanpoil Volcanics
Evdv(k) Eocene dacite and andesite flows, vitrophyric Klondike Mountain Formation
Evr(k) Eocene rhyolite flows Klondike Mountain Formation
Evt(k) Eocene tuffs and tuff breccias Klondike Mountain Formation
Evt(s) Eocene tuffs and tuff breccias Sanpoil Volcanics
EPAia(b) Eocene-Paleocene acidic intrusive rocks Mount Bonaparte pluton, Keller Butte suite
EPAia(m) Eocene-Paleocene acidic intrusive rocks Moses pluton, Keller Butte suite
pTam pre-Tertiary amphibolite ---
pTmb pre-Tertiary marble ---
pTmb(1) pre-Tertiary marble ---
pTmb(2) pre-Tertiary marble ---
pTmg pre-Tertiary migmatite ---
pTog pre-Tertiary orthogneiss ---
pTog(e) pre-Tertiary orthogneiss equigranular
pTogp pre-Tertiary orthogneiss, porphyritic ---
pTpg(2) pre-Tertiary paragneiss ---
pTqz(2) pre-Tertiary quartzite, high grade ---
pTqz(4) pre-Tertiary quartzite, high grade ---
pTsc pre-Tertiary schist, high grade ---
pTsc(1) pre-Tertiary schist, high grade ---
pTsc(3) pre-Tertiary schist, high grade ---
Kiat(mm) Cretaceous two-mica granite Mingo Mountain, two-mica granite at
Kiqm(k) Cretaceous quartz monzonite Kettle Falls, quartz monzonite near
KJia(b) Cretaceous-Jurassic acidic intrusive rocks Buckhorn Mountain pluton, dikes of
KJid(b) Cretaceous-Jurassic diorite Buckhorn Mountain pluton
KJigd(b) Cretaceous-Jurassic granodiorite Buckhorn Mountain pluton
KJigd(w) Cretaceous-Jurassic granodiorite Wauconda pluton
KJik(s) Cretaceous-Jurassic alkalic intrusive rocks Shasket Creek, alkalic rocks of
Jcg(r) Jurassic continental sedimentary deposits or rocks, conglomerate Rossland Group
Jib Jurassic basic intrusive rocks ---
Jiq Jurassic quartz diorite ---
Jmm(r) Jurassic marine metasedimentary rocks Rossland Group
Jmv(r) Jurassic metavolcanic rocks Rossland Group
TRcb Triassic metacarbonate ---
TRPMid(b) Triassic-Permian diorite Buckhorn Mountain, metadiorite near
TRPMmm Triassic-Permian marine metasedimentary rocks ---
TRPMmt Triassic-Permian metasedimentary and metavolcanic rocks ---
TRPMmv Triassic-Permian metavolcanic rocks ---
MZid(s) Mesozoic diorite Swan Lake, metadiorite near
MZu Mesozoic ultrabasic rocks ---
PMcb Permian metacarbonate ---
PMmm Permian marine metasedimentary rocks ---
CDmm(k) Carboniferous-Devonian marine metasedimentary rocks Kelly Hill phyllite
CDmm(m) Carboniferous-Devonian marine metasedimentary rocks Mission Lake, metasedimentary rocks near
CDmv(m) Carboniferous-Devonian metavolcanic rocks Mission Lake, metavolcanic rocks near
Ocb(c) Ordovician metacarbonate Covada Group
Omm(c) Ordovician marine metasedimentary rocks Covada Group
Omm(l) Ordovician marine metasedimentary rocks Ledbetter Slate
Omv(c) Ordovician metavolcanic rocks Covada Group
OCcb(m) Ordovician-Cambrian metacarbonate Metaline Formation
Ccb(m) Cambrian metacarbonate Maitlen Phyllite, including Reeves Member
Cph(m) Cambrian phyllite, low grade Maitlen Phyllite
CZq(a) Cambrian-upper Proterozoic quartzite, low grade Addy Quartzite
PZcb(s) Paleozoic metacarbonate Swan Lake, metalimestone near
PZmm(h) Paleozoic marine metasedimentary rocks Heidegger Hill, metasedimentary rocks at
PZmm(s) Paleozoic marine metasedimentary rocks Swan Lake, metasedimentary rocks near
Zcb(m) upper Proterozoic metacarbonate Monk Formation, Windermere Group
Zmt(m) upper Proterozoic metasedimentary and metavolcanic rocks Monk Formation, Windermere Group