Assessing the proposed pre-last glacial maximum human occupation of North America at Coats-Hines-Litchy, Tennessee, and other sites
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Keywords:
Beringia
Last Glacial Maximum
Assemblage (archaeology)
Based on the analyses of grain size,magnetic susceptibility,sporopollen,foraminifera,lithology and AMS14C from SC1 core in Chenghu Lake,this paper discusses the evolutions of climate and paleoenvironment since Late Pleistocene.The records of sporopollen show that climate is accord with the world's: warm-wet during the Late Pleistocene,a cool and dry climate during the last glaciation,warm-wet in the Early Holocene,a hot-wet climate in the Middle Holocene,cool-dry to warm-moist during the Late Holocene;Two marine invasion events are discovered,one is Gehu during Late Pleistocene and the other is Zhenjiang in the Middle Holocene.This district has undergone great palaeogeographic changes since Late Pleistocene: rivers in the Late Pleistocene,rivers and marshlands during the last glaciation,flood plain-estuary during the Early Holocene,estuary-shallow marine in the Middle Holocene,lakes and marshlands during the Late Holocene.
Holocene climatic optimum
Lithology
Marine transgression
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The Ushki Paleolithic sites of Kamchatka, Russia, have long been thought to contain information critical to the peopling of the Americas, especially the origins of Clovis. New radiocarbon dates indicate that human occupation of Ushki began only 13,000 calendar years ago-nearly 4000 years later than previously thought. Although biface industries were widespread across Beringia contemporaneous to the time of Clovis in western North America, these data suggest that late-glacial Siberians did not spread into Beringia until the end of the Pleistocene, perhaps too recently to have been ancestral to proposed pre-Clovis populations in the Americas.
Beringia
Upper Paleolithic
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Based on the analyses of grain size,sporopollen,foraminifera,AMS14 C and OSL dating from LH01Core in the Northern Liaodong Bay,the evolutions of climate and paleoenvironment since Late Pleistocene are discusses in this paper.LH01Core has undergone great palaeogeographic changes since Late Pleistocene:rivers and lakes in the Late Pleistocene,marine and lands during the Early Holocene,shallow marine in the Middle Holocene,estuary shallow marine during the Late Holocene.The records of sporopollen show that climate:cool-dry during the Late Pleistocene,cool-wet during the Late Pleistocene, cool-wet in the Early Holocene,hot-wet in the Middle Holocene,hot-dry in the Middle Holocene,warmdry during the LateHo locene.PanShan invasion event is discovered aboaut 7.5ka BP in LH01Core.
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