CLICK ON A COLORED AREA OF THE GEOLOGY MAP TO SHOW INFORMATION HERE
	wtr	---	water	---
	ice	Holocene	ice	---
	Qa	Holocene-Pleistocene	alluvium	---
	Qad	Holocene-Pleistocene	alpine glacial drift, Fraser-age	---
	Qaf	Holocene-Pleistocene	alluvial fan deposits	---
	Qaf	Holocene-Pleistocene	alluvial fan deposits	---
	Qls	Holocene-Pleistocene	mass-wasting deposits, mostly landslides	---
	Qls(a)	Holocene-Pleistocene	mass-wasting deposits	rock avalanche deposits
	Qls(m)	Holocene-Pleistocene	mass-wasting deposits, other than landslides	mass-wasting deposits, other than landslides
	Qoa	Holocene-Pleistocene	alluvium, older	---
	Qs	Holocene-Pleistocene	sedimentary deposits or rocks	---
	Qta	Holocene-Pleistocene	talus deposits	---
	Qta	Holocene-Pleistocene	talus deposits	---
	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
	Qvp(gp)	Pleistocene	pyroclastic flows	Glacier Peak, volcanic rocks of
	Mian(c)	Miocene	intrusive andesite	Cloudy Pass pluton
	Mida(c)	Miocene	intrusive dacite	Cloudy Pass pluton, dacite porphyry breccia of
	Mida(ca)	Miocene	intrusive dacite	Cloudy Pass pluton, dacite and andesite breccia of
	Mig(c)	Miocene	granite	Cloudy Pass batholith and associated rocks
	Migd(c)	Miocene	granodiorite	Cloudy Pass batholith and associated rocks
	Mix	Miocene	intrusive breccia	Lyall Ridge, porphyries and breccias of
	Ec(2)	Eocene	continental sedimentary deposits, conglomerate	---
	Ei	Eocene	intrusive rocks, undivided	---
	Ei(s)	Eocene	intrusive rocks, undivided	St. Louise Creek, stock of
	Ei(sr)	Eocene	intrusive rocks, undivided	Sawtooth Ridge, stocks and dikes of
	Eia(fp)	Eocene	acidic intrusive rocks	Fox Peak, stock of
	Eia(sf)	Eocene	acidic intrusive rocks	S Fork Ridge, dike swarm of
	Eian(gm)	Eocene	intrusive andesite	Old Gib Mountain, andesite porphyry of
	Eida(g)	Eocene	intrusive dacite	Goat Mountain, porphyry dike swarm of
	Eida(gm)	Eocene	intrusive dacite	Old Gib Mountain, dacite volcanic neck of
	Eida(s)	Eocene	intrusive dacite	S Fork Gold Creek, porphyry dike swarm of
	Eig(c)	Eocene	granite	Cooper Mountain batholith
	Eig(g)	Eocene	granite	Golden Horn batholith
	Eig(r)	Eocene	granite	Rampart Mountain pluton
	Eigb	Eocene	gabbro	---
	Eigd(bb)	Eocene	granodiorite	Bryan Butte, stock of
	Eigd(cm)	Eocene	granodiorite	Cooper Mountain batholith, main phase
	Eigd(ho)	Eocene	granodiorite	Holden, biotite granodiorite & granite near
	Eigd(ll)	Eocene	granodiorite	Larch Lakes pluton
	Eigd(n)	Eocene	granodiorite	Noname stock
	Eigd(rc)	Eocene	granodiorite	Railroad Creek pluton
	Eim(r)	Eocene	monzonite	Rainy Creek, dike of
	Eiq(d)	Eocene	quartz diorite	Duncan Hill pluton
	Eiq(dc)	Eocene	quartz diorite	Duncan Hill pluton, contact complex of
	Eiq(h)	Eocene	quartz diorite	Hungry Mountain, stock of
	Eiqm(c)	Eocene	quartz monzonite	Cooper Mountain batholith
	Eit(ch)	Eocene	tonalite	Copper Peak and Holden Lake plutons
	Eit(chc)	Eocene	tonalite	Copper Peak & Holden Lake contact complex
	Eit(h)	Eocene	tonalite	Holden, hornblende biotite tonalite near
	Eog(c)	Eocene	orthogneiss	Cooper Mountain batholith
	Etz	Eocene	tectonic zone	---
	PAc(p)	Paleocene	continental sedimentary deposits, conglomerate	Pipestone Canyon Formation
	PAit(o)	Paleocene	tonalite	Oval Peak batholith
	PAog(b)	Paleocene	orthogneiss	Battle Mountain, gneiss of
	PAog(j)	Paleocene	orthogneiss	Lake Juanita leucogneiss, Skagit Gneiss
	PAog(o)	Paleocene	orthogneiss	Oval Peak batholith, orthogneiss of
	PAog(t)	Paleocene	orthogneiss	Tuckaway Lake, gneiss of
	PAog(w)	Paleocene	orthogneiss	War Creek, gneiss of
	PAKog(b)	Paleo-Cretaceous	orthogneiss	Mount Benzarino, orthogneiss of
	Tia	Tertiary	acidic intrusive rocks	---
	Tib(c)	Tertiary	basic intrusive rocks	Chiwawa River, basaltic plugs and dikes of
	TKid(y)	Tertiary-Cretaceous	diorite	Yockey Creek, stock of
	TKig(sc)	Tertiary-Cretaceous	granite	Sisters Creek pluton
	TKigd(e)	Tertiary-Cretaceous	granodiorite	Elbow Canyon, granodiorite near
	TKit	Tertiary-Cretaceous	tonalite	---
	TKit	Tertiary-Cretaceous	tonalite	---
	TKmi(s)	Tertiary-Cretaceous	mixed metamorphic and igneous rocks	Skagit Gneiss
	TKog(b)	Tertiary-Cretaceous	orthogneiss	Boulder Creek, orthogneiss of, Skagit Gneiss
	TKog(m)	Tertiary-Cretaceous	orthogneiss	McGregor Mountain, migmatitic orthogneiss of, Skagit Gneiss
	TKog(p)	Tertiary-Cretaceous	orthogneiss	Purple Creek, orthogneiss of, Skagit Gneiss
	TKog(r)	Tertiary-Cretaceous	orthogneiss	Rainbow Mountain, orthogneiss of, Skagit Gneiss
	TKog(ss)	Tertiary-Cretaceous	orthogneiss	Stehekin, orthogneiss of, Skagit Gneiss
	pTgn(e)	pre-Tertiary	gneiss	Elbow Canyon, gneiss east of
	pTigb(r)	pre-Tertiary	gabbro	Riddle Peaks pluton
	pTigb(rl)	pre-Tertiary	gabbro	Riddle Peaks pluton, layered
	pTmt(m)	pre-Tertiary	metasedimentary and metavolcanic rocks	McClure Mountain unit
	Kcg(2)	Cretaceous, upper	continental sedimentary deposits, conglomerate	Virginian Ridge Formation
	Km(2)	Cretaceous, upper	marine sedimentary rocks	Virginian Ridge Formation
	Kc(mv)	Cretaceous	continental sedimentary deposits, conglomerate	Midnight Peak Formation, Ventura Member
	Kc(w)	Cretaceous	continental sedimentary deposits, conglomerate	Winthrop Sandstone
	Kcg(p)	Cretaceous	continental sedimentary deposits, conglomerate	Patterson Lake, conglomerate of
	Kcg(v)	Cretaceous	continental sedimentary deposits, conglomerate	Virginian Ridge Formation
	Kid(e)	Cretaceous	diorite	Entiat pluton
	Kid(mc)	Cretaceous	diorite	McFarland Creek stock
	Kid(t)	Cretaceous	diorite	Texas Creek stock
	Kigd(bp)	Cretaceous	granodiorite	Buck Peak pluton
	Kigd(hp)	Cretaceous	granodiorite	High Pass pluton
	Kigd(t)	Cretaceous	granodiorite	Texas Creek stock
	Kiq(c)	Cretaceous	quartz diorite	Carlton stocks
	Kiq(cp)	Cretaceous	quartz diorite	Cardinal Peak pluton
	Kit	Cretaceous	tonalite	---
	Kit(cm)	Cretaceous	tonalite	Clark Mountain pluton
	Kit(cp)	Cretaceous	tonalite	Cardinal Peak pluton
	Kit(cpc)	Cretaceous	tonalite	Cardinal Peak pluton, contact complex of
	Kit(e)	Cretaceous	tonalite	Entiat pluton
	Kit(ec)	Cretaceous	tonalite	Entiat & Seven Fingered Jack, contact complex of
	Kit(ep)	Cretaceous	tonalite	Entiat pluton, tonalitic orthogneiss of
	Kit(s)	Cretaceous	tonalite	Seven Fingered Jack pluton
	Km(v)	Cretaceous	marine sedimentary rocks	Virginian Ridge Formation
	Kmg(c)	Cretaceous	migmatite	Chelan complex, migmatite of the
	Kog(b)	Cretaceous	orthogneiss	Black Peak batholith, main phase
	Kog(bl)	Cretaceous	orthogneiss	Bench Lake, tonalitic gneiss of
	Kog(bm)	Cretaceous	orthogneiss	Black Peak batholith, mafic phase
	Kog(br)	Cretaceous	orthogneiss	Black Peak batholith, Reynolds Peak phase
	Kog(brp)	Cretaceous	orthogneiss	Bearcat Ridge pluton
	Kog(brp)	Cretaceous	orthogneiss	Bearcat Ridge pluton
	Kog(c)	Cretaceous	orthogneiss	Chelan complex
	Kog(e)	Cretaceous	orthogneiss	Eldorado Orthogneiss
	Kog(ef)	Cretaceous	orthogneiss	Eldorado Orthogneiss, flaser gneiss
	Kog(l)	Cretaceous	orthogneiss	Leroy Creek pluton
	Kog(su)	Cretaceous	orthogneiss	Sulphur Mountain pluton
	Kog(t)	Cretaceous	orthogneiss	Tenpeak pluton
	Kog(tc)	Cretaceous	orthogneiss	Tenpeak pluton, contact zone of
	Kog(tf)	Cretaceous	orthogneiss	Tenpeak pluton, flaser gneiss of
	Kog(tf)	Cretaceous	orthogneiss	Tenpeak pluton, flaser gneiss of
	Kv(m)	Cretaceous	volcanic rocks	Midnight Peak Formation, volcanic member of
	Kvs(w)	Cretaceous	volcanic and sedimentary rocks	Winthrop Sandstone, volcanic member of
	KJam(o)	Cretaceous-Jurassic	amphibolite	Okanogan complex, amphibolite in the
	KJcb(n)	Cretaceous-Jurassic	metacarbonate	Newby Group
	KJigb(f)	Cretaceous-Jurassic	gabbro	Frazer Creek complex
	KJigb(r)	Cretaceous-Jurassic	gabbro	Red Shirt gabbro
	KJiq(a)	Cretaceous-Jurassic	quartz diorite	Alder Creek stock
	KJiq(f)	Cretaceous-Jurassic	quartz diorite	Frazer Creek complex
	KJit(f)	Cretaceous-Jurassic	tonalite	Frazer Creek complex
	KJm(n)	Cretaceous-Jurassic	marine sedimentary rocks	Newby Group
	KJmi(t)	Cretaceous-Jurassic	mixed metamorphic and igneous rocks	Tiffany Mountain, gneissic trondhjemite of
	KJmv(n)	Cretaceous-Jurassic	metavolcanic rocks	N Creek Volcanics
	KJog(c)	Cretaceous-Jurassic	orthogneiss	Coyote Ridge, quartz diorite gneiss of
	KJog(o)	Cretaceous-Jurassic	orthogneiss	Okanogan complex, tonalite gneiss of
	KJog(p)	Cretaceous-Jurassic	orthogneiss	Pasayten fault, mylonitic gneiss along the
	KJvd(n)	Cretaceous-Jurassic	dacite flows	Newby Group
	KJvs(n)	Cretaceous-Jurassic	volcanic and sedimentary rocks	Newby Group
	KJvt(n)	Cretaceous-Jurassic	tuffs and tuff breccias	Newby Group
	pKbg(l)	pre-Cretaceous	banded gneiss	Leecher Metamorphics
	pKhm(l)	pre-Cretaceous	heterogeneous metamorphic rocks	Leecher Metamorphics
	pKhm(s)	pre-Cretaceous	heterogeneous metamorphic rocks	Skagit Gneiss, xenoliths in
	pKhm(tm)	pre-Cretaceous	heterogeneous metamorphic rocks	Twentyfive Mile Creek, amphibolite and schist of
	pKhm(tv)	pre-Cretaceous	heterogeneous metamorphic rocks	Twisp Valley schist
	pKmv(n)	pre-Cretaceous	metavolcanic rocks	N Creek Volcanics
	pKog(a)	pre-Cretaceous	orthogneiss	Antoine Creek, tonalite gneiss of
	pKog(l)	pre-Cretaceous	orthogneiss	Leecher Metamorphics, diorite gneiss of
	pKog(m)	pre-Cretaceous	orthogneiss	Methow Gneiss
	pKu	pre-Cretaceous	ultrabasic rocks	---
	Jm(t)	Jurassic	marine sedimentary rocks	Twisp Formation
	TRhm(c)	Triassic	heterogeneous metamorphic rocks	Cascade River unit, Chelan Mountains terrane
	TRhm(cb)	Triassic	heterogeneous metamorphic rocks	Cascade River unit, Chelan Mountains terrane
	TRhm(cc)	Triassic	heterogeneous metamorphic rocks	Cas. Riv. unit, Chelan Mtns. terr., Cas. Riv. Schist
	TRhm(cg)	Triassic	heterogeneous metamorphic rocks	Cascade River unit, Chelan Mountains terrane
	TRhm(ch)	Triassic	heterogeneous metamorphic rocks	Cas. Riv. unit, hornblende-bearing,Chelan Mtns. terr.
	TRhm(cs)	Triassic	heterogeneous metamorphic rocks	Cas. Riv. unit, Chelan Mtns. terr., Spider Mtn. Schist
	TRiq(m)	Triassic	quartz diorite	Marblemount Meta-Quartz Diorite, Chelan Mts. terrane
	TRmb(c)	Triassic	marble	Cascade River unit, Chelan Mountains terrane
	TRog(d)	Triassic	orthogneiss	Dumbell Mountain plutons
	TRog(da)	Triassic	orthogneiss	Dumbell Mountain plutons, augen orthogneiss
	TRog(dd)	Triassic	orthogneiss	Dumbell Mountain plutons, qtz.diorite to tonalite orthogneiss
	TRog(mm)	Triassic	orthogneiss	Magic Mountain Gneiss
	TRPMhmc(nb)	Triassic-Permian	heterogeneous metamorphic rocks, chert bearing	Napeequa unit,Chelan Mtns.terr.,cal-bio-qtz schist&gneiss
	TRPMhmc(nh)	Triassic-Permian	heterogeneous metamorphic rocks, chert bearing	Napeequa unit, hornblende-bearing, Chelan Mtns. terr.
	TRPMhmc(nq)	Triassic-Permian	heterogeneous metamorphic rocks, chert bearing	Napeequa unit,Chelan Mtns.terr.,mica-qtz schist&mic.quartzite
	TRPMhmc(nr)	Triassic-Permian	heterogeneous metamorphic rocks, chert bearing	Napeequa unit, Chelan Mtns. terr., Rainbow Lake Schist
	TRPMhmc(nt)	Triassic-Permian	heterogeneous metamorphic rocks, chert bearing	Napeequa unit, Chelan Mtns. terrane, Twisp Valley Schist
	TRPMu(n)	Triassic-Permian	ultrabasic rocks	Napeequa unit, Chelan Mountains terrane
	pCam(s)	Precambrian	amphibolite	Swakane Biotite Gneiss
	pCgn(s)	Precambrian	gneiss	Swakane Biotite Gneiss