Climate Change Data Portal
DOI | 10.1007/s12594-019-1242-5 |
Estimation of Paleo-ice Sheet Thickness and Evolution of Landforms in Schirmacher Oasis and Adjoining Area, cDML, East Antarctica | |
Shrivastava, Prakash K.1; Roy, Sandip K.2; Srivastava, Hari B.3; Dharwadkar, Amit4 | |
发表日期 | 2019 |
ISSN | 0016-7622 |
EISSN | 0974-6889 |
卷号 | 93期号:6页码:638-644 |
英文摘要 | Quaternary period has witnessed perceptible climatic change in Schirmacher region, central Dronning Maud Land (cDML), East Antarctica. There were buildup of ice sheet and its recession throughout the period. The Schirmacher Oasis, Baalsrudfjellet, Veteheia and Veten nunataks are the prominent northernmost exposures in cDML area and play a major role in controlling the ice flow in this region resulting in glacial erosional as well as depositional landforms. These developments reveal vital information about the evolution of the region in Quaternary period. Erosional features such as roche-moutonees, glacially polished and abraded rocky outcrops with excellent preservation of glacial striations indicates the paleo-movement of overriding glaciers. Striations are generally preserved on polished surfaces of bedrock exposed on the high lands, however, glacial striations are also preserved over some mafic and resistant hard rocks in low lying areas. In general, the glacial striations indicate north-northeast movement of paleo ice sheet. Majority of the boulders in east-central valley show their longer axis trending in NNE-WSW to NE-SW directions. The cross cutting relation of striations give the changing directions of paleo ice sheet movement. Further, back calculation of depth of indentation and corresponding ice load gives a value of 100 to 500 m thick paleo-ice sheet in different parts of this region, documenting vast deglaciation in this region. |
WOS研究方向 | Geology |
来源期刊 | JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA
![]() |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/98545 |
作者单位 | 1.Geol Survey India, State Unit Sikkim, Gangtok 737101, India; 2.Geol Survey India, Cent Reg, Nagpur 440006, Maharashtra, India; 3.Banaras Hindu Univ, Dept Geol, Varanasi 221005, Uttar Pradesh, India; 4.Geol Survey India, Polar Studies Div, Faridabad 121001, India |
推荐引用方式 GB/T 7714 | Shrivastava, Prakash K.,Roy, Sandip K.,Srivastava, Hari B.,et al. Estimation of Paleo-ice Sheet Thickness and Evolution of Landforms in Schirmacher Oasis and Adjoining Area, cDML, East Antarctica[J],2019,93(6):638-644. |
APA | Shrivastava, Prakash K.,Roy, Sandip K.,Srivastava, Hari B.,&Dharwadkar, Amit.(2019).Estimation of Paleo-ice Sheet Thickness and Evolution of Landforms in Schirmacher Oasis and Adjoining Area, cDML, East Antarctica.JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA,93(6),638-644. |
MLA | Shrivastava, Prakash K.,et al."Estimation of Paleo-ice Sheet Thickness and Evolution of Landforms in Schirmacher Oasis and Adjoining Area, cDML, East Antarctica".JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA 93.6(2019):638-644. |
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。