CLICK ON A COLORED AREA OF THE GEOLOGY MAP TO SHOW INFORMATION HERE
	wtr	---	water	---
	Qa	Quaternary	alluvium	---
	Qaf	Quaternary	alluvial fan deposits	---
	Qafo	Quaternary	alluvial fan deposits, older	---
	Ql	Quaternary	loess	Palouse Formation
	Qls	Quaternary	mass-wasting deposits, mostly landslides	---
	Qt	Quaternary	terraced deposits	---
	Qfg	Pleistocene	outburst flood deposits, gravel, late Wisconsin	Missoula, glacial Lake, deposits of
	Qfs	Pleistocene	outburst flood deposits, late Wisconsin	Missoula, glacial Lake, deposits of
	Qfs(t)	Pleistocene	outburst flood deposits, late Wisconsin	Touchet Beds, glacial Lake Missoula
	Qva(ti)	Pleistocene	andesite flows	Tieton Andesite
	QPLcg	Pleistocene-Pliocene	continental sedimentary deposits, conglomerate	---
	PLcg(t)	Pliocene	continental sedimentary deposits, conglomerate	Thorp Gravel
	PLMc(r)	Pliocene-Miocene	continental sedimentary deposits, conglomerate	Ringold Formation
	PLMcg(r)	Pliocene-Miocene	continental sedimentary deposits, conglomerate	Ringold Formation
	Mv(sem)	Miocene, upper	basalt flows	Elephant Mountain Member, Saddle Mountains Basalt
	Mc(e)	Miocene, mid-upper	continental sedimentary deposits, conglomerate	Ellensburg Formation
	Mv(s)	Miocene, mid-upper	basalt flows	Saddle Mountains Basalt, Columbia River Basalt Group
	Mc	Miocene	continental sedimentary deposits, conglomerate	---
	Mcg	Miocene	continental sedimentary deposits, conglomerate	---
	Mian(fp)	Miocene	intrusive andesite	Fifes Peak Formation, dikes of
	Mva(fp)	Miocene	andesite flows	Fifes Peak Formation
	Mc(ev)	Miocene, middle	continental sedimentary deposits, conglomerate	Ellensburg Formation, Vantage Member
	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.)
	Mv(sa)	Miocene, middle	basalt flows	Asotin Member, Saddle Mountains Basalt
	Mv(se)	Miocene, middle	basalt flows	Esquatzel Member, Saddle Mountains Basalt
	Mv(sp)	Miocene, middle	basalt flows	Pomona Member, Saddle Mountains Basalt
	Mv(su)	Miocene, middle	basalt flows	Umatilla Member, Saddle Mountains Basalt
	Mv(swc)	Miocene, middle	basalt flows	Wilbur Creek Member, Saddle Mountains Basalt
	Mv(w)	Miocene, middle	basalt flows	Wanapum Basalt, Columbia River Basalt Group
	Mv(wfs)	Miocene, middle	basalt flows	Frenchman Springs Member, Wanapum Basalt
	Mv(wpr)	Miocene, middle	basalt flows	Priest Rapids Member, Wanapum Basalt
	Mv(wr)	Miocene, middle	basalt flows	Roza Member, Wanapum Basalt