DOI: 10.1016/j.palaeo.2017.02.026
论文题名: Late Pleistocene-Holocene climate and sea level changes inferred based on the tidal terrace sequence, Kachchh, Western India
作者: Das A. ; Prizomwala S.P. ; Makwana N. ; Thakkar M.G.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 473 起始页码: 82
结束页码: 93
语种: 英语
英文关键词: Harappan culture
; High sea stand
; Holocene climate
; Middle Holocene
; OSL
; Western India
英文摘要: An estuarine tidal terrace sequence at the mouth of the Kharod River, Kachchh, Western India is investigated for Pleistocene to Holocene climate and sea-level changes. Based on sedimentology, major element geochemistry, mineralogy, supported by optical dating, the study reports a lowered sea level during 13.8 ka, followed by gradual rise in the sea level until around 6 ka. This is ascribed to a combination of enhanced melt water discharge and strengthened Indian Summer Monsoon (ISM). The temporal changes in major elements (detrital proxies), suggest a fluctuating to an overall arid monsoon conditions during 5.7 to 3.1 ka with a rapidly rising sea level. This is further supported by the dominance of fine textured sediment along with the occurrences of shell rich horizon. In the absence of any evidence of land-level changes, the study suggests that at around 6 ka to 3 ka, the sea was approximately 2 m higher then present. The decline in the concentration of geochemical proxies and occurrence of Aeolian sand after 3 ka is interpreted as the onset of aridity and present day like conditions. The three levels of sea stands, during – Early, Middle and Late Holocene are synchronous with various archeological (Harappan) settlements in the region. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67867
Appears in Collections: 过去全球变化的重建
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作者单位: Institute of Seismological Research, Raisan, Gandhinagar, India; Department of Earth and Environmental Science, KSKV Kachchh University, Bhuj, India
Recommended Citation:
Das A.,Prizomwala S.P.,Makwana N.,et al. Late Pleistocene-Holocene climate and sea level changes inferred based on the tidal terrace sequence, Kachchh, Western India[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,473