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	wtr	---	water	---
	Qa	Holocene-Pleistocene	alluvium	---
	Qls	Holocene-Pleistocene	mass-wasting deposits, mostly landslides	---
	Qad	Pleistocene	alpine glacial drift, Fraser-age	---
	Qao	Pleistocene	alpine glacial outwash, Fraser-age	---
	Qap	Pleistocene	alpine glacial drift, pre-Fraser	---
	Qap(1)	Pleistocene	alpine glacial drift, pre-Fraser	---
	Qapo	Pleistocene	alpine glacial outwash, pre-Fraser	---
	Qapt	Pleistocene	alpine glacial till, pre-Fraser	---
	Qapt(1)	Pleistocene	alpine glacial till, pre-Fraser	---
	Qapt(m)	Pleistocene	alpine glacial till, pre-Fraser	morainal deposits
	Qapw(1)	Pleistocene	alpine glacial drift, pre-Wisconsin	older
	Qapw(2)	Pleistocene	alpine glacial drift, pre-Wisconsin	younger
	Qapwo(1)	Pleistocene	alpine glacial outwash, pre-Wisconsin	older
	Qapwo(2)	Pleistocene	alpine glacial outwash, pre-Wisconsin	younger
	Qapwt(1)	Pleistocene	alpine glacial till, pre-Wisconsin	older
	Qapwt(1m)	Pleistocene	alpine glacial till, pre-Wisconsin	morainal deposits, older
	Qapwt(2)	Pleistocene	alpine glacial till, pre-Wisconsin	younger
	Qapwt(2m)	Pleistocene	alpine glacial till, pre-Wisconsin	morainal deposits, younger
	Qat	Pleistocene	alpine glacial till, Fraser-age	---
	Qat(m)	Pleistocene	alpine glacial till, Fraser-age	morainal deposits
	Qgd	Pleistocene	continental glacial drift, Fraser-age	mostly Vashon Stade in western WA; unnamed in eastern WA
	Qgdc	Pleistocene	glacial and non-glacial deposits, Fraser-age	---
	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
	PLMm	Pliocene-Miocene	marine sedimentary rocks	---
	Mm(r)	Miocene	marine sedimentary rocks	rhythmic thin- to medium-bedded sandstone and shale
	Mm(t)	Miocene	marine sedimentary rocks	thick-bedded sandstone with thin-bedded sandstone and shale
	Mml	Miocene	marine clastic rocks	dominantly thick-bedded lithic sandstone
	Mml(c)	Miocene	marine clastic rocks	dominantly thick-bedded lithic sandstone
	MEbx	Miocene-Eocene	tectonic breccia	---
	MEm	Miocene-Eocene	marine sedimentary rocks	---
	MEm(r)	Miocene-Eocene	marine sedimentary rocks	rhythmic thin- to medium-bedded sandstone and shale
	MEm(t)	Miocene-Eocene	marine sedimentary rocks	thick-bedded sandstone with thin-bedded sandstone and shale
	MEml	Miocene-Eocene	marine clastic rocks	dominantly thick-bedded lithic sandstone
	MEml(c)	Miocene-Eocene	marine clastic rocks	dominantly thick-bedded lithic sandstone
	OEm	Oligocene-Eocene	marine sedimentary rocks	---
	OEm(o)	Oligocene-Eocene	marine sedimentary rocks	Ozette Lake-Calawah Ridge block
	Evb	Eocene	basaltic rocks	---