CLICK ON A COLORED AREA OF THE GEOLOGY MAP TO SHOW INFORMATION HERE
	wtr	---	water	---
	Qa	Holocene-Pleistocene	alluvium	---
	Ql	Holocene-Pleistocene	loess	Palouse Formation
	Qls	Holocene-Pleistocene	mass-wasting deposits, mostly landslides	---
	QPLls	Holocene-Pliocene	mass-wasting deposits, mostly landslides	---
	Qf(b)	Pleistocene	Bonneville flood deposits	Bonneville flood deposits
	Qf(m)	Pleistocene	outburst flood deposits, undivided, late Wisconsin	Missoula, glacial Lake, deposits of, undivided
	Qfs(t)	Pleistocene	outburst flood deposits, late Wisconsin	Touchet Beds, glacial Lake Missoula
	QMcg	Pleistocene-Miocene	continental sedimentary deposits, conglomerate	---
	Mv(sb)	Miocene, upper	basalt flows	Buford Member, Saddle Mountains Basalt
	Mv(sem)	Miocene, upper	basalt flows	Elephant Mountain Member, Saddle Mountains Basalt
	Mv(slm)	Miocene, upper	basalt flows	Lower Monumental Member, Saddle Mountains Basalt
	Mc	Miocene	continental sedimentary deposits, conglomerate	---
	Mcg	Miocene	continental sedimentary deposits, conglomerate	---
	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(gR1)	Miocene, middle	basalt flows	Grande Ronde Basalt, R1 (lower flows of rev.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(sl)	Miocene, middle	basalt flows	Saddle Mountains Basalt, lower, undivided
	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(swr)	Miocene, middle	basalt flows	Weissenfels Ridge Member, Saddle Mountains Basalt
	Mv(swu)	Miocene, middle	basalt flows	Wilbur Creek & Umatilla Members, Saddle Mountains Basalt
	Mv(w)	Miocene, middle	basalt flows	Wanapum Basalt, Columbia River Basalt Group
	Mv(wem)	Miocene, middle	basalt flows	Eckler Mountain Member, Wanapum Basalt
	Mv(wfe)	Miocene, middle	basalt flows	Frenchman Spr. & Eckler Mtn. Members, Wanapum Basalt
	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
	Mv(i)	Miocene, lower	basalt flows	Imnaha Basalt, Columbia River Basalt Group
	pTmt	pre-Tertiary	metasedimentary and metavolcanic rocks	---
	KJi	Cretaceous-Jurassic	intrusive rocks, undivided	---
	Jm(ch)	Jurassic	marine sedimentary rocks	Coon Hollow Formation
	TRcb(mb)	Triassic	metacarbonate	Martin Bridge Limestone
	TRmt(dc)	Triassic	metasedimentary and metavolcanic rocks	Doyle Creek Formation
	TRmt(ws)	Triassic	metasedimentary and metavolcanic rocks	Wild Sheep Creek Formation