Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1006/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
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ISSN | 0033-5894 |
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 |
推荐引用方式 GB/T 7714 | 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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