|Name||Pre-Upper Jurassic metamorphic rocks of the low-grade zone|
Metamorphic > Metasedimentary > Metaclastic > Phyllite (Glaucophane-schist)Darrington Phyllite metamorphosed in blueschist facies (Misch, 1977, Brown, 1974).
Metamorphic > Schist (Greenschist, Amphibolite epidote-amphibolite)Included in Easton Schist in Central Cascades (Foster, 1960).
Metamorphic > Metasedimentary > Metacarbonate > Marble
Metamorphic > Granulite
Sedimentary > Clastic > Siltstone (Calcareous, Tuffaceous)Ellemeham Formation in Okanogan County.
Sedimentary > Chemical > Chert (Bed)Radiolarian
Sedimentary > Clastic > Conglomerate (Bed)Includes metaconglomerate.
Igneous > Plutonic > Gabbroic > GabbroMetagabbro
Metamorphic > Metaigneous > GreenstoneGreenstone comprises tuffs and flows (Rinehart and Fox, 1972).
Sedimentary > Clastic > Sandstone > Graywacke (Bed)Part of Peshastin formation of central Washington (Southwick, 1974).
Metamorphic > Metasedimentary > Metaclastic > QuartziteLocally in Okanogan County.
Metamorphic > Metasedimentary > Metaclastic > Slate
Sedimentary > Carbonate > Limestone (Lens)
Metamorphic > Metasedimentary > Metaclastic > ArgillitePart of Peshastin formation of central Washington (Southwick, 1974).
|Stratigraphic units||Darrington Phyllite (part of the Easton Metamorphic Suite); Kobau Formation; Ellemeham Formation; Chelan Batholithic Complex (in part: Twisp Valley Schist); Anarchist series (in part); Peshastin formation (part of Ingalls Tectonic Complex)|
Huntting, M.T., Bennett, W.A.G., Livingston, V.E.Jr., and Moen, W.S., 1961, Geologic Map of Washington: Washington Division of Mines and Geology, scale 1:500,000.
Rinehart, C.D., and Fox, K.F.Jr., 1972, Geology and Mineral Deposits of the Loomis Quadrangle, Okanogan County, Washington: Washington Division of Mines and Geology Bulletin No. 64, 124 p.
Misch, P., 1977, Bedrock Geology of the North Cascades, in Brown, E. H. and Ellis, R. C. (eds.), Geological Excursions in the Pacific Northwest, Geological Society of America 1977 Annual Meeting, Seattle: Western Washington University, p. 1-62.
Foster, R.J., 1960, Tertiary Geology of a Portion of the Central Cascade Mountains, Washington: Geological Society of America Bulletin v. 71, no. 2, p. 99-126.
Barksdale, J.D., 1975, Geology of the Methow Valley, Okanogan County, Washington: Washington Division of Geology and Earth Resources Bulletin no. 48, 72 p.
Brown, E.H., Comparison of the Mineralogy and Phase Relations of Blueschists from the North Cascades, Washington, and Greenschists from Otago, New Zealand: Geological Society of America Bulletin, v. 85, no. 3, p. 333-344.
Tabor, R.W., Waitt, R.B.,Jr., Frizzell, V.A.,Jr., Swanson, D.A., Byerly, G.R., Bentley, R.D., 1982, Geologic Map of the Wanatchee 1:100,000 Quadrangle, Central Washington: U. S. Geological Survey Miscellaneous Investigations Series Map I-1311, scale 1:100,000.
Southwick, D.L., 1974, Geology of the Alpine-type Ultramafic Complex and Mount Stuart, Washington: Geological Society of America Bulletin, v. 85, no. 3, p 391-402.
Stout, M.L., 1964, Geology of a Part of the South-Central Cascade Mountains, Washington: Geological Society of America Bulletin, v. 75, no. 4, p 317-334.
Adams, J.B., 1964, Origin of the Black Peak Quartz Diorite, Northern Cascades, Washington: American Journal of Science, v. 262, no. 3, p. 290-306.
Duggan, K.M. and Brown, E.H., 1994, Correlation of the Tonga Formation and Chiwaukum Schist, North Cascades, Washington: Implications for Late Cretaceous orogenic mechanisms: Tectonics, v. 13, no. 6, p. 1411-1424.
|Counties||Chelan - King - Kittitas - Okanogan - Skagit - Snohomish - Whatcom|