Stratigraphy and chronology of late interglacial and early Vashon glacial time in the Seattle area, Washington
By: by Donal R. Mullineaux, Howard H. Waldron, and Meyer Rubin ; work done in cooperation with the Municipality of Metropolitan Seattle.
Contributors: Waldron, Howard H. 1917-; Rubin, Meyer.; Municipality of Metropolitan Seattle (Wash.)
Series: Contributions to stratigraphy; Geological Survey bulletin -- 1194-O
Publisher: U.S. G.P.O.
Published: 1965
Place of publication: Washington
Language: eng
Number of pages: 10
Subjects: Glacial epoch -- Washington (State) -- Seattle.; Geology, Stratigraphic -- Pleistocene.; Drift -- Washington (State) -- Seattle.; Sediments (Geology) -- Washington (State) -- Seattle.; Radiocarbon dating -- Washington (State) -- Seattle.; Geological time.; Stratigraphic correlation -- Washington (State) -- Seattle.
Description: A conformable late Pleistocene sequence of interglacial and glacial sediments in the Seattle area, Washington, can be divided into three units: a lower, unnamed nonglacial unit; a middle unit, the Lawton Clay Member of the Vashon Drift; and an upper unit, the Esperance Sand Member of the Vashon Drift. Radiocarbon dates from the lower unit indicate that the Puget glacial lobe of the Vashon age advanced into the area at some time after 15,000 years ago - several thousand years later than was previously believed.
Notes: Includes bibliographical references (p. 9-10).