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Glaciomarine deposits of Miocene through Holocene age in the Yakataga Formation along the Gulf of Alaska margin, Alaska

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Glaciomarine deposits of Miocene through Holocene age in the Yakataga Formation along the Gulf of Alaska margin, Alaska; 1976; Article; Conference publication; Recent and ancient sedimentary environments in Alaska: Proceedings of the Alaska Geological Society Symposium held April 2-4, 1975, at Anchorage, Alaska; Plafker, George ; Addicott, W. O.

Summary

Perhaps the world's longest and most complete onshore sedimentary record of late Cenozoic glaciation is preserved in the Gulf of Alaska Tertiary province that extends 800 km along the coast of southern Alaska. The Yakataga Formation, with an aggregate outcrop thickness of about 5,000 m, is characterized by variable amounts of distinctive neritic marine tillite-like diamictite and laminated siltstone containing dropstones interpreted as ice-rafted glacial debris. The lithology, sedimentary structures and molluscan fauna of the formation suggest that active tidal glaciers or an ice shelf were present along the landward margin of the basin possibly beginning in early or early middle Miocene time. Dropstone distribution in outcrop sections [...]

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Harvested on Mon Jul 21 12:41:54 MDT 2014 from MODS XML Service

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Type Scheme Key
local-index unknown 70043504
local-pk unknown 70043504

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parts
typePublication Place
valueAnchorage, AK
languageEnglish
citationTypeConference Paper

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