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Full-Text Articles in Physical Sciences and Mathematics
Steller's Sea Cow In Pleistocene Interglacial Beach Deposits On Amchitka, Aleutian Isknds, L. M. Gard Jr., G. E. Lewis, Frank C. Whitmore Jr.
Steller's Sea Cow In Pleistocene Interglacial Beach Deposits On Amchitka, Aleutian Isknds, L. M. Gard Jr., G. E. Lewis, Frank C. Whitmore Jr.
United States Geological Survey: Staff Publications
The first discovery of Steller's Sea Cow (Hydrodamalis) in place in Pleistocene deposits has been made in interglacial beach sand and gravel 35 m above present sea level on Amchitka, Aleutian Islands. Uranium series dating of the bone indicates that it is about 135,000 yrs old.
Late Quaternary Eustatic Sea-Level Changes Along The Malibu Coast, Los Angeles County, California, Peter W. Birkeland
Late Quaternary Eustatic Sea-Level Changes Along The Malibu Coast, Los Angeles County, California, Peter W. Birkeland
United States Geological Survey: Staff Publications
Late Quaternary relative sea-level changes along the Malibu coast can be deciphered by study of geomorphic features and marine and associated stream deposits. Evidence for such changes includes (a) stream downcutting in large valleys during low stands of sea level, (b) stream aggradation in the same valleys during high stands of sea level, and (c) marine shoreline angles whose altitudes coincide with the tops of valley-fill stream deposits. This evidence, and open-system uranium-series dates for shells from the Corral and Dume terrace deposits, provide a time scale for certain sea-level changes. Evidence from other …