Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.epsl.2018.08.018 |
Controls on subaerial erosion rates in Antarctica | |
Marrero, Shasta M.1; Hein, Andrew S.1; Naylor, Mark1; Attal, Mikael1; Shanks, Richard2; Winter, Kate3; Woodward, John3; Dunning, Stuart4; Westoby, Matthew3; Sugden, David1 | |
通讯作者 | Marrero, Shasta M. |
来源期刊 | EARTH AND PLANETARY SCIENCE LETTERS
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ISSN | 0012-821X |
EISSN | 1385-013X |
出版年 | 2018 |
卷号 | 501页码:56-66 |
英文摘要 | Erosion rates offer insight on landscape development and the relative importance of chemical and physical processes of weathering. Minimal chemical weathering makes Antarctica an ideal location in which to compare the physical weathering of carbonate rocks to other lithologies. Here we report the first cosmogenic nuclide-derived erosion rates for carbonate rocks in Antarctica. Carbonate samples collected in the southernmost Ellsworth Mountains reflect a (CI)-C-36 erosion rate of 0.22 +/- 0.02 mm/ka. This erosion rate is consistent with other reported Antarctic erosion rates, but is lower than (CI)-C-36 erosion rates derived from other arid regions in the world. These results are integrated with a continent-wide reanalysis of 28 cosmogenic nuclide erosion rate studies (>200 measurements), which comprise numerous rock types and multiple cosmogenic nuclides. By combining cosmogenic nuclide-derived erosion rates across studies, the larger trends provide insight into factors (e.g. lithology, glacial history, and availability of abrasive material) affecting subaerial erosion rates in Antarctica. Statistical analysis of the compiled data set shows differences based on lithology, with sandstone having the largest range of erosion rates. The compiled data also reveals higher erosion rates in areas with a large potential sediment supply, like the Dry Valleys. Samples collected from boulders yield lower erosion rates than those collected from bedrock, likely due to a combination of physical processes that affect boulders and bedrock differently, and glacial history, which can affect the apparent cosmogenic-nuclide derived erosion rate. (C) 2018 The Authors. Published by Elsevier B.V. |
英文关键词 | erosion rate cosmogenic nuclides chlorine-36 lithology Antarctica |
类型 | Article |
语种 | 英语 |
国家 | Scotland ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000447105000006 |
WOS关键词 | SURFACE EXPOSURE AGES ; NUCLIDE PRODUCTION-RATES ; NORTHERN VICTORIA LAND ; WEDDELL SEA EMBAYMENT ; DRY VALLEYS REGION ; ICE-SHEET ; COSMOGENIC NUCLIDES ; LANDSCAPE EVOLUTION ; CLIMATE-CHANGE ; SIRIUS GROUP |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/208610 |
作者单位 | 1.Univ Edinburgh, Sch GeoSci, Drummond St, Edinburgh EH8 8XP, Midlothian, Scotland; 2.Scottish Univ Environm Res Ctr, E Kilbride, Lanark, Scotland; 3.Northumbria Univ, Fac Engn & Environm, Dept Geog & Environm Sci, Newcastle Upon Tyne, Tyne & Wear, England; 4.Newcastle Univ, Sch Geog Polit & Sociol, Dept Geog, Newcastle Upon Tyne, Tyne & Wear, England |
推荐引用方式 GB/T 7714 | Marrero, Shasta M.,Hein, Andrew S.,Naylor, Mark,et al. Controls on subaerial erosion rates in Antarctica[J],2018,501:56-66. |
APA | Marrero, Shasta M..,Hein, Andrew S..,Naylor, Mark.,Attal, Mikael.,Shanks, Richard.,...&Sugden, David.(2018).Controls on subaerial erosion rates in Antarctica.EARTH AND PLANETARY SCIENCE LETTERS,501,56-66. |
MLA | Marrero, Shasta M.,et al."Controls on subaerial erosion rates in Antarctica".EARTH AND PLANETARY SCIENCE LETTERS 501(2018):56-66. |
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