| Phased evolution and variation of the South Asian monsoon, and resulting weathering and surface erosion in the Himalaya-Karakoram Mountains, since late Pliocene time using data from Arabian Sea core | |
| Lu, Huayu1; Liu, Ruixuan1; Cheng, Linhai1; Feng, Han1; Zhang, Hanzhi1; Wang, Yao1; Hu, Rong1; Zhao, Wancang1,2; Ji, Junfeng2; Xu, Zhaokai3; Yu, Zhaojie3; Kulhanek, Denise K.4; Pandey, Dhananjai K.5; Clift, Peter D.6 | |
| 2020-06-01 | |
| 发表期刊 | GEOLOGICAL MAGAZINE
 |
| ISSN | 0016-7568 |
| 卷号 | 157期号:6页码:864-878 |
| 通讯作者 | Lu, Huayu([email protected]) |
| 摘要 | We investigate the phased evolution and variation of the South Asian monsoon and resulting weathering intensity and physical erosion in the Himalaya-Karakoram Mountains since late Pliocene time (c. 3.4 Ma) using a comprehensive approach. Neodymium and strontium isotopic compositions and single-grain zircon U-Pb age spectra reveal the sources of the deposits in the east Arabian Sea, and show a combination of sources from the Himalaya and the Karakoram-Kohistan-Ladakh Mountains, with sediments from the Indian Peninsula such as the Deccan Traps or Craton. We interpret shifts in the sediment sources to have been forced by sea-level changes that correlate with South Asian monsoon rainfall variation since late Pliocene time. We collected 908 samples from the International Ocean Discovery Program Hole U1456A, which was drilled in the east Arabian Sea. Time series of hematite content and grain size of the sediments were examined downcore. We found South Asian monsoon precipitation and weathering intensity experienced three phases from late Pliocene time. Lower monsoon precipitation, with a lower variability and strong weathering intensity, occurred during 3.4-2.4 Ma; an increased and more variable South Asian monsoon rainfall, along with strengthened but fluctuating weathering intensity, occurred at 1.8-1.1 Ma; and a reduced rainfall with lower South Asian monsoon precipitation variability and moderate weathering intensity marked the period 1.1-0.1 Ma. Maximum entropy spectral analysis and wavelet transform show that there were orbital-dominated cycles of periods c. 100 and c. 41 ka in these proxy-based time series. We propose that the monsoon, sea level, global temperature and insolation together forced the weathering and erosion in SW Asia. |
| 关键词 | zircon U-Pb ages Nd-Sr isotopes hematite content grain size IODP Hole U1456A east Arabian Sea monsoon rainfall belt |
| DOI | 10.1017/S0016756820000291 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[41888101]; National Natural Science Foundation of China[41690111]; National Natural Science Foundation of China[41920104005]; post-cruise research grant |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000539094000004 |
| 出版者 | CAMBRIDGE UNIV PRESS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/167697 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Lu, Huayu |
| 作者单位 | 1.Nanjing Univ, Key Lab Coast & Isl Dev, Minist Educ, Sch Geog & Ocean Sci, Nanjing 210023, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, Key Lab Surficial Geochem, Minist Educ, Nanjing 210023, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 4.Texas A&M Univ, Int Ocean Discovery Program, 1000 Discovery Dr,10, College Stn, TX 77845 USA 5.Natl Ctr Antarctic & Ocean Res NCAOR, Dept Marine Geophys, Vasco Da Gama 403804, Goa, India 6.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA |
| 推荐引用方式 GB/T 7714 | Lu, Huayu,Liu, Ruixuan,Cheng, Linhai,et al. Phased evolution and variation of the South Asian monsoon, and resulting weathering and surface erosion in the Himalaya-Karakoram Mountains, since late Pliocene time using data from Arabian Sea core[J]. GEOLOGICAL MAGAZINE,2020,157(6):864-878. |
| APA | Lu, Huayu.,Liu, Ruixuan.,Cheng, Linhai.,Feng, Han.,Zhang, Hanzhi.,...&Clift, Peter D..(2020).Phased evolution and variation of the South Asian monsoon, and resulting weathering and surface erosion in the Himalaya-Karakoram Mountains, since late Pliocene time using data from Arabian Sea core.GEOLOGICAL MAGAZINE,157(6),864-878. |
| MLA | Lu, Huayu,et al."Phased evolution and variation of the South Asian monsoon, and resulting weathering and surface erosion in the Himalaya-Karakoram Mountains, since late Pliocene time using data from Arabian Sea core".GEOLOGICAL MAGAZINE 157.6(2020):864-878. |
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| phased-evolution-and（9462KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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