Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1130/B25945.1 |
Quantitative and qualitative insights into bedrock landform erosion on the South Indian craton using cosmogenic nuclides and apatite fission tracks | |
Gunnell, Y.; Braucher, R.; Bourles, D.; Andre, G. | |
通讯作者 | Gunnell, Y. |
来源期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
出版年 | 2007 |
卷号 | 119期号:5-6页码:576-585 |
英文摘要 | Due to the scarcity of datable chronostratigraphic markers and the related difficulties of quantifying depths of erosion in cratonic landscapes, conceptual models of tropical pediplain and etchplain evolution commonly lack time and vertical elevation scales. Here, we present the first quantitative study of relief development in South India based on in situ-produced Be-10 dating aided by previously acquired apatite fission-track data. Erosion rates measured on the summits of inselbergs concur with the perception of inselbergs as islands of low erosion, but they also reveal a critical contrast between slowly evolving (<= 2 m/m.y.) higher-relief landforms and more rapidly eroding (8-12 m/m.y.) lower-relief landforms. This relationship is independent of lithology and climate but suggests that erosion rates on the surrounding plain, which are controlled by fluvial incision rates into the plateau surface, feed back on inselberg dynamism. A discussion on the most suitable sites for dating bedrock landforms highlights the problems of sampling design, the difficulties of linking measured erosion rates to the minutiae of process, and the limitations of both single- and multiple-chronometer denudation chronologies in low-energy cratonic environments. |
英文关键词 | inselberg cosmogenic nuclide dating erosion rate backwearing downwearing etchplain India |
类型 | Article |
语种 | 英语 |
国家 | France |
收录类别 | SCI-E |
WOS记录号 | WOS:000247630200005 |
WOS关键词 | PASSIVE MARGIN DENUDATION ; CENTRAL NAMIB DESERT ; LANDSCAPE DEVELOPMENT ; PENINSULAR INDIA ; HISTORY ; RATES ; GEOMORPHOLOGY ; THERMOCHRONOLOGY ; BE-10 |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
来源机构 | French National Research Institute for Sustainable Development |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/154304 |
作者单位 | (1)Univ Paris 07, Dept Geog, F-75251 Paris 05, France;(2)Ctr Europeen Rech & Enseignement Geosci Environm, UMR 6635, F-13545 Aix En Provence, France |
推荐引用方式 GB/T 7714 | Gunnell, Y.,Braucher, R.,Bourles, D.,et al. Quantitative and qualitative insights into bedrock landform erosion on the South Indian craton using cosmogenic nuclides and apatite fission tracks[J]. French National Research Institute for Sustainable Development,2007,119(5-6):576-585. |
APA | Gunnell, Y.,Braucher, R.,Bourles, D.,&Andre, G..(2007).Quantitative and qualitative insights into bedrock landform erosion on the South Indian craton using cosmogenic nuclides and apatite fission tracks.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,119(5-6),576-585. |
MLA | Gunnell, Y.,et al."Quantitative and qualitative insights into bedrock landform erosion on the South Indian craton using cosmogenic nuclides and apatite fission tracks".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 119.5-6(2007):576-585. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。