Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.geomorph.2006.05.005 |
Quaternary bedrock erosion and landscape evolution in the Sor Rondane Mountains, East Antarctica: Reevaluating rates and processes | |
Matsuoka, Norikazu; Thomachot, Celine E.; Oguchi, Chiaki T.; Hatta, Tamao; Abe, Masahiro; Matsuzaki, Hiroyuki | |
通讯作者 | Matsuoka, Norikazu |
来源期刊 | GEOMORPHOLOGY
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ISSN | 0169-555X |
出版年 | 2006 |
卷号 | 81期号:3-4页码:408-420 |
英文摘要 | Rates and processes of rock weathering, soil formation, and mountain erosion during the Quaternary were evaluated in an inland Antarctic cold desert. The fieldwork involved investigations of weathering features and soil profiles for different stages after deglaciation. Laboratory analyses addressed chemistry of rock coatings and soils, as well as Be-10 and Al-26 exposure ages of the bedrock. Less resistant gneiss bedrock exposed over 1 Ma shows stone pavements underlain by in situ produced silty soils thinner than 40 cm and rich in sulfates, which reflect the active layer thickness, the absence of cryoturbation, and the predominance of salt weathering. During the same exposure period, more resistant granite bedrock has undergone long-lasting cavernous weathering that produces rootless mushroom-like boulders with a strongly Fe-oxidized coating. The red coating protects the upper surface from weathering while very slow microcracking progresses by the growth of sulfates. Geomorphological evidence and cosmogenic exposure ages combine to provide contrasting average erosion rates. No erosion during the Quaternary is suggested by a striated roche moutonnee exposed more than 2 Ma ago. Differential erosion between granite and gneiss suggests a significant lowering rate of desert pavements in excess of 10 m Ma(-1). The landscape has been (on the whole) stable, but the erosion rate varies spatially according to microclimate, geology, and surface composition. (c) 2006 Elsevier B.V. All rights reserved. |
英文关键词 | Antarctica weathering soil erosion cosmogenic exposure age |
类型 | Article |
语种 | 英语 |
国家 | Japan ; France |
收录类别 | SCI-E |
WOS记录号 | WOS:000242879700013 |
WOS关键词 | DRY VALLEYS ; EXPOSURE AGES ; COSMOGENIC NUCLIDES ; COLD DESERT ; IN-SITU ; BE-10 ; AL-26 ; LANDFORM ; HISTORY |
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/2XILL650/151540 |
作者单位 | (1)Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan;(2)Univ Reims, Grp Etud Geomat & Environm Nat & Anthrop, F-51100 Reims, France;(3)Saitama Univ, Geosphere Res Inst, Urawa, Saitama 3388570, Japan;(4)Japan Int Res Ctr Agr Sci, Tsukuba, Ibaraki 3058686, Japan;(5)Univ Tokyo, Nucl Sci & Technol Res Ctr, Tokyo 1130032, Japan |
推荐引用方式 GB/T 7714 | Matsuoka, Norikazu,Thomachot, Celine E.,Oguchi, Chiaki T.,et al. Quaternary bedrock erosion and landscape evolution in the Sor Rondane Mountains, East Antarctica: Reevaluating rates and processes[J],2006,81(3-4):408-420. |
APA | Matsuoka, Norikazu,Thomachot, Celine E.,Oguchi, Chiaki T.,Hatta, Tamao,Abe, Masahiro,&Matsuzaki, Hiroyuki.(2006).Quaternary bedrock erosion and landscape evolution in the Sor Rondane Mountains, East Antarctica: Reevaluating rates and processes.GEOMORPHOLOGY,81(3-4),408-420. |
MLA | Matsuoka, Norikazu,et al."Quaternary bedrock erosion and landscape evolution in the Sor Rondane Mountains, East Antarctica: Reevaluating rates and processes".GEOMORPHOLOGY 81.3-4(2006):408-420. |
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