Eva Interglaciation Forest Bed, Unglaciated East-central Alaska: Global Warming 125,000 Years Ago
Troy Lewis Péwé
Geological Society of America, 1997 - Science - 54 pages
The ancient, boreal Eva forest forms the centerpiece in this evaluation of the time and nature of the enfironment during an interglaciation. This title brings together results of exmaination of hundreds of loess exposures, when loess faces were still frozen in gold-mining excavation, and data on the character and age of the deposits from fission-track dating of tphra, paleomagnetism of the loess, thermoluminescnece dating of loess, and radiocarbon dating by liquid scintillation. Dendrochronology studies of trees are compared to those from trees of the modern boreal forest.
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angiosperm Arizona Ash Bed bark beetles beaver dam Berger Birch Creek boreal forest buried Cenozoic central Alaska climate cm diameter College Hill Dawson Cut east-central Alaska environment erosion Eva Creek Eva Forest Bed Fairbanks Fairbanks area Figure Forest Bed samples Forest Bed trees fragments Fritts frozen loess Giddings Forest Bed glacial Gold Hill Loess Goldstream Formation Halfway House Holocene ice wedges km west last interglaciation Leavitt mean annual air mining cuts modern Alaskan Northway Junction Old Crow tephra paleosol perennially frozen permafrost Péwé Picea glauca pollen preserved radiocarbon dating reaction wood Ready Bullion Formation retransported loess ring width Sangamon sections sediments Sheep Creek tephra silt slopes specimens spruce log stratigraphic stump surface T. L. Pewe Table Tanana tephra beds tephra layers TL date tree rings tree-ring UAZTRL unpub Upland Fig Upper Eva valley bottoms Viereck west of Fairbanks white spruce Wisconsin Yukon Yukon River Yukon-Tanana Upland