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Cordilleran Section - 98th Annual Meeting (May 13–15, 2002)

Paper No. 0
Presentation Time: 8:00 AM-12:00 PM

GEOLOGIC MAP OF WASHINGTON--NORTHWEST QUADRANT


DRAGOVICH, Joe D.1, LOGAN, Robert L.2, SCHASSE, Henry W.2, WALSH, Timothy J.2, LINGLEY Jr, William S.3, NORMAN, David K.2, GERSTEL, Wendy J.4, LAPEN, Thomas J.1 and SCHUSTER, J. Eric1, (1)Washington Department of Natural Resources, Division of Geology and Earth Resources, P.O. Box 47007, Olympia, WA 98504-7007, (2)Washington Department of Natural Resources, Division of Geology and Earth Resources, P. O. Box 47007, Olympia, WA 98504-7007, (3)Washington Division of Geology and Earth Resources, Box 47007, Olympia, WA 98504-7007, (4)WA State Dept. of Nat Rscs, P.O. Box 47016, Olympia, WA 98504-7016, tim.walsh@wadnr.gov

Work began on the 1:250,000-scale geologic map of Washington in 1982. Previous quadrangles were published in 1987 (southwest), 1991 (northeast), and 1997 (southeast). The northwest quadrant represents the culmination of the first state map of Washington since 1961. This quadrant contains some of the most complex geology in the state, including rocks of the Northwest Cascades system, Olympic Mountains subduction complex, and the San Juan archipelago, as well as deposits of multiple incursions of Cordilleran ice sheets into the Puget Sound lowlands and the Straits of Juan de Fuca. This map is the first of the quadrants to be prepared by digital methods, and all of the source mapping is available digitally at a scale of 1:100,000.

Session No. 16--Booth# 1

T5. Architecture of Cascadia: A Synthesis of New Geologic and Geophysical Mapping in the Forearc (Posters)
Tuesday, 14 May 2002: 8:00 AM-12:00 PM
Geological Society of America Abstracts with Programs. Vol. 34, No. 5, April 2002, p.31
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