CLICK ON A COLORED AREA OF THE GEOLOGY MAP TO SHOW INFORMATION HERE
	wtr	---	water	---
	Qd	Holocene	dune sand	---
	Qf	Holocene	artificial fill, including modified land	---
	Qla	Holocene	lacustrine deposits	---
	Qa	Holocene-Pleistocene	alluvium	---
	Qaf	Holocene-Pleistocene	alluvial fan deposits	---
	Ql	Holocene-Pleistocene	loess	Palouse Formation
	Qls	Holocene-Pleistocene	mass-wasting deposits, mostly landslides	---
	Qf(b)	Pleistocene	Bonneville flood deposits	Bonneville flood deposits
	Qf(bg)	Pleistocene	outburst flood deposits, gravel, late Wisconsin	Missoula flood deposits, backwater gravel of
	Qfg	Pleistocene	outburst flood deposits, gravel, late Wisconsin	Missoula, glacial Lake, deposits of
	Qfs(t)	Pleistocene	outburst flood deposits, late Wisconsin	Touchet Beds, glacial Lake Missoula
	QMcg	Pleistocene-Miocene	continental sedimentary deposits, conglomerate	---
	PLMc(r)	Pliocene-Miocene	continental sedimentary deposits, conglomerate	Ringold Formation
	Mv(sem)	Miocene, upper	basalt flows	Elephant Mountain Member, Saddle Mountains Basalt
	Mv(slm)	Miocene, upper	basalt flows	Lower Monumental Member, Saddle Mountains Basalt
	Mv(s)	Miocene, mid-upper	basalt flows	Saddle Mountains Basalt, Columbia River Basalt Group
	Mv(gN2)	Miocene, middle	basalt flows	Grande Ronde Basalt, N2 (upper flows of norm.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(swc)	Miocene, middle	basalt flows	Wilbur Creek Member, Saddle Mountains 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