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Scientific Investigations Report 2007–5102

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5102

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Figure - refer to figure caption for alternative text description

Figure 3. Bedrock geology of the Granger Drain and DR2 basins, Washington (Schuster, 1994). Mc(e) = Miocene (middle to upper) – continental sedimentary deposits or rocks; Mcg(e) = Miocene (upper) – continental sedimentary deposits or rocks, conglomerate; Mv(sem) = Miocene (upper) – basalt flows (Elephant Mountain Member [CRB, SMB]); Mv(sp) = Miocene (late) – basalt flows (Pomona Member [CRB, SMB]); Mv(su) = Miocene (middle) – basalt flows (Umatilla Member [CRB, SMB]); Qa = Quaternary – alluvium; Qaf = Quaternary – alluvial fan deposits; Qafo = Quaternary – alluvial fan deposits, older; Qfs(t) = Pleistocene – outburst flood deposits, sand and silt, late Wisconsinan; Qt = Quaternary – loess. (Source: Washington Division of Geology and Earth Resources, 2005.)

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