Alaskan Upper Miocene Marine Glacial Deposits and the Turborotalia pachyderma Datum Plane
- 31 October 1969
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 166 (3905), 607-609
- https://doi.org/10.1126/science.166.3905.607
Abstract
Ln southeastern Alaska the first marine evidence of widespread glaciation occurs in Miocene sections near the base of the Yakataga Formation. An associated temperature decrease of about 10°C is indicated by the influx of an upper Miocene cold-water planktontic foraminifer, Turborotalia pachyderma, an event that occurred about 13 million years ago.Keywords
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