FORAMINIFERAL BIOFACIES AND PALEOENVIRONMENTS IN A PLIOCENE MEGACHANNEL OF THE GLACIOMARINE YAKATAGA FORMATION, GULF OF ALASKA
Published:May 11, 1994
M.B. Lagoe, C.H. Eyles, N. Eyles, 1994. "FORAMINIFERAL BIOFACIES AND PALEOENVIRONMENTS IN A PLIOCENE MEGACHANNEL OF THE GLACIOMARINE YAKATAGA FORMATION, GULF OF ALASKA", Late Cenozoic Benthic Foraminifera: Taxonomy, Ecology and Stratigraphy. In honour of Rolf W. Feyling-Hanssen on his 75th Birthday. July 24, 1993, Hans Petter Sejrup, Karen Luise Knudsen
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Foraminifera are common in the glaciomarine Yakataga Formation of the eastern Gulf of Alaska and can provide key insights into the depositional history of Late Cenozoic glaciomarine paleoenvironments in the northeast Pacific Ocean. Lithologic evidence of tidewater glaciation consists of two main intervals of diamictites and sediments containing ice-rafted debris. The first is in the basal Yakataga Formation and is of latest Miocene age, while the second consists of 2-4 km of late Pliocene-early Pleistocene glaciomarine sediment in the upper Yakataga Formation. A distinctive feature of this latter interval is megachannels up to 400 meters deep and several kilometers...