Arid
DOI10.1006/qres.1999.2097
The full-glacial environment of the northern Seward Peninsula, Alaska, reconstructed from the 21,500-year-old kitluk paleosol
Hofle, C; Edwards, ME; Hopkins, DM; Mann, DH; Ping, CL
通讯作者Edwards, ME
来源期刊QUATERNARY RESEARCH
ISSN0033-5894
出版年2000
卷号53期号:2页码:143-153
英文摘要

Paleoenvironmental conditions are reconstructed from soils buried under volcanic ash ca. 21,500 years ago on the Seward Peninsula. Soil development was minimal, reflecting the continuous regional deposition of loess, which originated from river floodplains and the exposed Chukchi shelf. Cryoturbated soil horizons, ice wedges, and ice-lens formation indicate a permafrost environment and mean annual temperatures below -6 degrees to -8 degrees C. Shallow active layers (average 45 cm), minimal evidence for chemical leaching of soils, and the presence of earthen hummocks indicate a cold and seasonally dry climate. Neither steppe nor polar desert soils are appropriate analogues for these zonal soils of loess-covered central Beringia, No exact analogues are known; however, soils underlying dry tundra near the arctic coast of northern Yakutia, Russia, and under moist, nonacidic tundra of the Alaskan North Slope have properties in common with the buried soils. (C) 2000 University of Washington.


英文关键词Beringia Bering Land Bridge paleosols paleoenvironmental reconstruction permafrost soils last glacial maximum
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000085958200002
WOS关键词BERING LAND-BRIDGE ; NORTHWEST ALASKA ; LATE-PLEISTOCENE
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/139879
作者单位(1)Univ Alaska Fairbanks, Alaska Quaternary Ctr, Fairbanks, AK 99775 USA;(2)Univ Alaska Fairbanks, Palmer Res Ctr, Agr & Forestry Expt Stn, Palmer, AK 99645 USA
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Hofle, C,Edwards, ME,Hopkins, DM,et al. The full-glacial environment of the northern Seward Peninsula, Alaska, reconstructed from the 21,500-year-old kitluk paleosol[J],2000,53(2):143-153.
APA Hofle, C,Edwards, ME,Hopkins, DM,Mann, DH,&Ping, CL.(2000).The full-glacial environment of the northern Seward Peninsula, Alaska, reconstructed from the 21,500-year-old kitluk paleosol.QUATERNARY RESEARCH,53(2),143-153.
MLA Hofle, C,et al."The full-glacial environment of the northern Seward Peninsula, Alaska, reconstructed from the 21,500-year-old kitluk paleosol".QUATERNARY RESEARCH 53.2(2000):143-153.
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