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wtr --- water ---
ice Holocene ice ---
Qa Holocene alluvium ---
Qad(b) Holocene alpine glacial drift, Fraser-age Burroughs Mountain Drift
Qad(g) Holocene alpine glacial drift, Fraser-age Garda Drift
Qaf Holocene alluvial fan deposits ---
Qf Holocene artificial fill, including modified land ---
Qls Holocene mass-wasting deposits, mostly landslides ---
Qta Holocene talus deposits ---
Qvl Holocene lahars ---
Qvl(e) Holocene lahars Electron Mudflow
Qvl(g) Holocene lahars Greenwater, lahar of
Qvl(o) Holocene lahars Osceola Mudflow
Qvl(p) Holocene lahars Paradise, debris flow of
Qvl(r) Holocene lahars Round Pass mudflow
Qvb Quaternary basalt flows ---
Qvba Quaternary basaltic andesite flows ---
Qad(e) Pleistocene alpine glacial drift, Fraser-age Evans Creek Drift
Qad(mn) Pleistocene alpine glacial drift, Fraser-age McNeely Drift
Qap Pleistocene alpine glacial drift, pre-Fraser ---
Qap(h) Pleistocene alpine glacial drift, pre-Fraser Hayden Creek Drift
Qapt(h) Pleistocene alpine glacial till, pre-Fraser Hayden Creek Drift, till deposits of
Qat(e) Pleistocene alpine glacial till, Fraser-age Evans Creek Drift, till deposits
Qian(mr) Pleistocene intrusive andesite Mount Rainier, plugs and dikes of
Qian(os) Pleistocene intrusive andesite Old Snowy Mountain, feeders for flows of
Qt Pleistocene terraced deposits ---
Qva Pleistocene andesite flows ---
Qva(dl) Pleistocene andesite flows Deer Lake Mountain, andesite of
Qva(dp) Pleistocene andesite flows Deep Creek, andesite of
Qva(jl) Pleistocene andesite flows Jess Lake complex, andesite of the
Qva(mo) Pleistocene andesite flows Mt. Rainier, andesite of, Observation & Echo Rocks andesites
Qva(mr) Pleistocene andesite flows Mount Rainier, andesite of
Qva(os) Pleistocene andesite flows Old Snowy Mountain, andesite of
Qva(pl) Pleistocene andesite flows Pear Lake, andesite of
Qva(rm) Pleistocene andesite flows Round Mountain, andesite of
Qva(ru) Pleistocene andesite flows Russell Ridge, andesite of
Qva(ti) Pleistocene andesite flows Tieton Andesite
Qvb(hm) Pleistocene basalt flows Hogback Mountain, mafic rocks of
Qvb(kl) Pleistocene basalt flows Kincaid Lake, basalt of
Qvb(lv) Pleistocene basalt flows Lava Creek, basalt of
Qvb(rr) Pleistocene basalt flows Rimrock Lake, basalts of
Qvb(tm) Pleistocene basalt flows Tumac Mountain, basalt of
Qvd(cf) Pleistocene dacite flows Clear Fork, dacite of
Qvd(sp) Pleistocene dacite flows Spiral Butte, dacite of
QPLian Pleistocene-Pliocene intrusive andesite ---
QPLva Pleistocene-Pliocene andesite flows ---
QPLva(bf) Pleistocene-Pliocene andesite flows Bee Flat, andesite of
QPLva(g) Pleistocene-Pliocene andesite flows Goat Rocks, andesite of
QPLvb(hm) Pleistocene-Pliocene basalt flows Hogback Mountain, mafic rocks of
QPLvd Pleistocene-Pliocene dacite flows ---
QPLvd(sy) Pleistocene-Pliocene dacite flows Snyder Mountain, dacite of
PLc Pliocene continental sedimentary deposits, conglomerate ---
PLvb(b) Pliocene basalt flows Bethel Ridge, olivine basalt of
PLvb(dw) Pliocene basalt flows Devils Washbasin, basalt of
PLvd Pliocene dacite flows ---
PLvr(d) Pliocene rhyolite flows Devils Horns, rhyolite of
PLvt Pliocene tuffs and tuff breccias ---
PLMiad Pliocene-Miocene intrusive andesite and dacite ---
PLOian Pliocene-Oligocene intrusive andesite ---
Mc(e) Miocene, mid-upper continental sedimentary deposits, conglomerate Ellensburg Formation
Miq(jl) Miocene, mid-upper quartz diorite Jug Lake, sills of
Mc Miocene continental sedimentary deposits, conglomerate ---
Mi Miocene intrusive rocks, undivided ---
Mia(bl) Miocene acidic intrusive rocks Bumping Lake pluton
Migd Miocene granodiorite ---
Migd(bl) Miocene granodiorite Bumping Lake pluton, associated stocks of
Migd(cr) Miocene granodiorite Carbon River stock
Mir Miocene intrusive rhyolite ---
Mvc Miocene volcaniclastic deposits or rocks ---
Mvt(sr) Miocene tuffs and tuff breccias Stevens Ridge Formation N of Mount Rainier
Mig(wr) Miocene, middle granite White River pluton
Migd(wr) Miocene, middle granodiorite White River pluton
Mv(g) Miocene, middle basalt flows Grande Ronde Basalt, Columbia River Basalt Group
Mv(gN1) Miocene, middle basalt flows Grande Ronde Basalt, N1 (lower flows of norm.mag.pol.)
Mv(gN2) Miocene, middle basalt flows Grande Ronde Basalt, N2 (upper flows of norm.mag.pol.)
Mv(gR2) Miocene, middle basalt flows Grande Ronde Basalt, R2 (upper flows of rev.mag.pol.)
Mia(t) Miocene, lower-mid acidic intusive rocks Tatoosh pluton
Migd(n) Miocene, lower-mid granodiorite Nisqually, granodiorite of
Migd(t) Miocene, lower-mid granodiorite Tatoosh pluton
Miq(n) Miocene, lower-mid quartz diorite Nisqually, quartz diorite of
Miq(t) Miocene, lower-mid quartz diorite Tatoosh pluton
Miqm(t) Miocene, lower-mid quartz monzonite Tatoosh pluton
Mia(tr) Miocene, lower acidic intrusive rocks Tatoosh pluton, rocks related to the
Migb(bx) Miocene, lower gabbro Box Canyon, intrusive diabase and basalt of
Mir(cw) Miocene, lower intrusive rhyolite Clear West, soda rhyolite of
Miv(sx) Miocene, lower intrusive-volcanic complex Skyscraper Mountain complex
Mva(1) Miocene, lower andesite flows ---
Mva(fp) Miocene, lower andesite flows Fifes Peak Formation
Mvb(1) Miocene, lower basalt flows ---
Mvba(1) Miocene, lower basaltic andesite flows ---
Mvt Miocene, lower tuffs and tuff breccias ---
Mvt(p) Miocene, lower tuffs and tuff breccias Palisades, welded tuff of the
MOib Miocene-Oligocene basic intrusive rocks ---
MOid Miocene-Oligocene diorite ---
MOiv(mx) Miocene-Oligocene intrusive-volcanic complex Mount Aix, volcanic complex of
MOva Miocene-Oligocene andesite flows ---
MOvc Miocene-Oligocene volcaniclastic deposits or rocks ---
MOvt Miocene-Oligocene tuffs and tuff breccias ---
MOvt(bm) Miocene-Oligocene tuffs and tuff breccias Burnt Mountain, tuff of
MOvt(br) Miocene-Oligocene tuffs and tuff breccias Bumping River, tuff of
MOvt(rt) Miocene-Oligocene tuffs and tuff breccias Rattlesnake Creek, tuff of
MOvt(sr) Miocene-Oligocene tuffs and tuff breccias Stevens Ridge Formation S of Mount Rainier
Ovr(oh) Oligocene, upper rhyolite flows Ohanapecosh Formation
Ova Oligocene andesite flows ---
Ova(oh) Oligocene andesite flows Ohanapecosh Formation
Ovb(mc) Oligocene basalt flows Milk Creek, olivine basalt of
Ovc Oligocene volcaniclastic deposits or rocks ---
Ovc(oh) Oligocene volcaniclastic deposits or rocks Ohanapecosh Formation
Ovc(sc) Oligocene volcaniclastic deposits or rocks Spencer Creek, volcanic sediments of
Ovc(scc) Oligocene volcaniclastic deposits or rocks Spencer Creek, volcanic sandstone and conglomerate of
Ovc(wc) Oligocene volcaniclastic deposits or rocks Wildcat Creek, volcaniclastic rocks of
Ovc(1) Oligocene, lower volcaniclastic deposits or rocks ---
Ovr(1) Oligocene, lower rhyolite flows ---
Ec(2lo) Eocene, mid-upper continental sedimentary deposits, conglomerate Lookout Creek, sandstone of
Ec(2ss) Eocene, mid-upper continental sedimentary deposits, conglomerate Summit Creek, sandstone of
Evt(sc) Eocene, mid-upper tuffs and tuff breccias Spencer Creek, welded tuff of
Ec(2cc) Eocene continental sedimentary deposits, conglomerate Chambers Creek, beds of
Ec(2na) Eocene continental sedimentary deposits, conglomerate Naches Formation
Ec(2pg) Eocene continental sedimentary deposits, conglomerate Puget Group
Eva Eocene andesite flows ---
Evc Eocene volcaniclastic deposits or rocks ---
Evb(dc) Eocene, middle basalt flows Discovery Creek basalt
Evb(tp) Eocene, middle basalt flows Tieton Pass, basalt of
Evb(s) Eocene, lower-mid basalt flows Summit Creek basalt
pTvr(r) pre-Tertiary rhyolite flows Russell Ranch Formation
KJm(r) Cretaceous-Jurassic marine sedimentary rocks Russell Ranch Formation, clastic subunit
KJmct(r) Cretaceous-Jurassic chert-rich marine sedimentary rocks Russell Ranch Formation, chert-tuff subunit
KJmv(r) Cretaceous-Jurassic metavolcanic rocks Russell Ranch Formation
KJvb(r) Cretaceous-Jurassic basalt flows Russell Ranch Formation
Jiq(i) Jurassic quartz diorite Indian Creek, complex of
Jog(i) Jurassic orthogneiss Indian Creek, complex of