title: Alaskan Upper Miocene Marine Glacial Deposits and the Turborotalia pachyderma Datum Plane.
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 degrees 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.
authors.forename: O L
authors.initials: OL
authors.lastname: Bandy
authors.forename: E A
authors.initials: EA
authors.lastname: Butler
authors.forename: R C
authors.initials: RC
authors.lastname: Wright