DOI: 10.1016/j.quascirev.2014.01.013
Scopus记录号: 2-s2.0-84896692263
论文题名: Timing and climatic drivers for glaciation across monsoon-influenced regions of the Himalayan-Tibetan orogen
作者: Murari M.K. ; Owen L.A. ; Dortch J.M. ; Caffee M.W. ; Dietsch C. ; Fuchs M. ; Haneberg W.C. ; Sharma M.C. ; Townsend-Small A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 88 起始页码: 159
结束页码: 182
语种: 英语
英文关键词: Asian monsoon
; Garhwal
; Glacial geomorphology
; Himalaya
; Mid-latitude westerlies
; Terrestrial cosmogenic nuclides
; Tibet
Scopus关键词: Asian monsoon
; Garhwal
; Glacial geomorphology
; Himalayas
; Mid-latitude westerlies
; Terrestrial cosmogenic nuclides
; Tibet
; Atmospheric thermodynamics
; Climate change
; Isotopes
; Structural geology
; Glacial geology
; beryllium isotope
; chronology
; correlation
; fluvial geomorphology
; geomorphology
; glacial landform
; glaciation
; Holocene
; Last Glacial Maximum
; latitude
; Little Ice Age
; mapping method
; mass movement
; moraine
; Northern Hemisphere
; uncertainty analysis
; Garhwal Himalayas
; Himalayas
; India
; Uttarakhand
英文摘要: Mapping and thirty-eight 10Be terrestrial cosmogenic nuclide (TCN) ages help define the timing of glaciation in the monsoon-influenced Greater Himalaya in central Garwhal, India. Glacial landforms in central Garwhal are present only within a few kilometers of the present glaciers and all date to less than ~12.5ka. This suggests that the Lateglacial and/or Holocene glacial advances were more extensive than their predecessors and hence destroyed or buried evidence for earlier glaciation or that other processes, such as intensive fluvial erosion and/or hillslope mass movements, have destroyed evidence of earlier glaciation. Prominent laterofrontal moraines date to the Lateglacial, the Early Holocene, and the Neoglaciation. Moraines next to the active ice and boulders on contemporary glaciers date to 101-102 years before present. This suggests only a minor glacial advance during the Little Ice Age occurred in central Garhwal. These young ages indicate that inheritance of TCNs in areas that were recently glaciated is very small and likely has little effect when considering TCN ages on moraines older than the global Last Glacial Maximum. The new 10Be ages are combined with 1081 recalculated 10Be ages from previous studies to develop a regional framework of glaciation across the monsoon-influenced and adjacent regions of the Himalayan-Tibetan orogen. We separate what appears to be continuous glaciation into 27 regional glacial stages (plus 2 tentative glacial stages) that are termed monsoonal Himalayan-Tibetan stages (MOHITS). The regional glacial stages cover a wide chronologic range that includes: five regional glacial stages older than the Last Glacial cycle (MOHITS 13 at 483±38ka to MOHITS 5E at 122±15ka); thirteen regional glacial stages within the Last Glacial cycle (MOHITS 5B at 91±15ka to MOHITS 2A at 12.9±0.9ka); and eleven regional glacial stages during the Holocene (MOHITS 1k at 11.4±0.7ka to MOHITS 1A at 0.4±0.1ka). There are strong correlations both with periods of strong monsoons, and northern hemisphere events throughout the entire chronologic range with 16 stages linked to the monsoon, 11 stages linked to the mid-latitude westerlies, and two unassigned because of large age uncertainties. Overall, we see a complex pattern of glaciation influenced by two climatic systems throughout the mid/late Quaternary. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60359
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geology, University of Cincinnati, Cincinnati, OH 45221, United States; School of Environment and Development, The University of Manchester, M0 1QD, United Kingdom; Department of Physics/PRIME Laboratory, Purdue University, West Lafayette, IN 47906, United States; Department of Geography, Justus-Liebig-University Giessen, Senckenbergstr. 1, D-35390 Giessen, Germany; Fugro GeoConsulting, Inc., 6100 Hillcroft, Houston, TX 77081, United States; Centre for the Study of Regional Development, Jawaharlal Nehru University, New Delhi 110067, India
Recommended Citation:
Murari M.K.,Owen L.A.,Dortch J.M.,et al. Timing and climatic drivers for glaciation across monsoon-influenced regions of the Himalayan-Tibetan orogen[J]. Quaternary Science Reviews,2014-01-01,88