Multiproxy record of monsoon variability from the Ganga Plain during 400-1200 AD
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作者:
Sen Singh, Dhruv
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Univ Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, IndiaUniv Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, India
Sen Singh, Dhruv
[1
]
Gupta, Anil K.
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机构:
Wadia Inst Himalayan Geol, Dehra Dun 248001, India
Savitribai Phule Pune Univ, Dept Geol, Pune 411007, Maharashtra, IndiaUniv Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, India
Gupta, Anil K.
[2
,3
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Sangode, S. J.
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Savitribai Phule Pune Univ, Dept Geol, Pune 411007, Maharashtra, IndiaUniv Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, India
Sangode, S. J.
[3
]
Clemens, Steven C.
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Brown Univ, Dept Geol Sci, Providence, RI 02912 USAUniv Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, India
Clemens, Steven C.
[4
]
Prakasam, M.
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IIT, Dept Geol & Geophys, Kharagpur 721302, W Bengal, IndiaUniv Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, India
Prakasam, M.
[5
]
Srivastava, Priyeshu
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Savitribai Phule Pune Univ, Dept Geol, Pune 411007, Maharashtra, IndiaUniv Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, India
Srivastava, Priyeshu
[3
]
Prajapati, Shailendra K.
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Univ Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, IndiaUniv Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, India
Prajapati, Shailendra K.
[1
]
机构:
[1] Univ Lucknow, CAS Geol, Lucknow 226007, Uttar Pradesh, India
[2] Wadia Inst Himalayan Geol, Dehra Dun 248001, India
[3] Savitribai Phule Pune Univ, Dept Geol, Pune 411007, Maharashtra, India
[4] Brown Univ, Dept Geol Sci, Providence, RI 02912 USA
[5] IIT, Dept Geol & Geophys, Kharagpur 721302, W Bengal, India
Indian Summer Monsoon;
Ganga Plain;
Sedimentology;
Environmental magnetism;
Stable oxygen isotope;
Medieval Warm Period;
ASIAN SOUTHWEST MONSOON;
GANDAK RIVER-BASIN;
MAGNETIC-PROPERTIES;
INDIAN MONSOON;
LAKE BASIN;
HOLOCENE;
PLEISTOCENE;
CLIMATE;
VEGETATION;
ISOTOPES;
D O I:
10.1016/j.quaint.2015.02.040
中图分类号:
P9 [自然地理学];
学科分类号:
0705 ;
070501 ;
摘要:
Understanding on the Indian Summer Monsoon (ISM) variability is chiefly based upon the marine proxies and a few continental records. The Ganga Plain, one of the most densely populated regions of the world marked by intensive cultivation of monsoon dependent crops and a rich cultural history, is not yet well understood in the context of monsoon variability. We present here a 400-1200 A.D. AMS radiocarbon dated record of Ropan Chhapra tal in the Central Ganga Plain using sedimentology, environmental magnetism, and stable isotope of oxygen for ISM variability. The environmental magnetic parameters (chi(1f), chi(ARM), SIRM/chi(1f), S-Ratio, B-(0)CR and HIRM) inferred antiferromagnetic mineralogy (hematite and/or goethite) independent of grain size variation during 400 -900 A.D., depicting climate variability within warm humid to warm arid conditions favouring stronger ISM seasonality. Prevalence of ferrimagnetic mineralogy under less oxygenated conditions intermittently demonstrates an altered catchment regime or possibly in response to stronger winter monsoon. The higher delta O-18 values around 500, 580 and 740 A.D. indicate warm and arid conditions under weak ISM. The lower delta O-18 values around 480, 540 and 700 A.D. and from 900 to 1200 A.D. occur during warm and humid conditions indicating maximum intensity of the ISM. Increased silt content from 800 A.D. onwards is due to increased surface runoff in response to enhanced precipitation, and the higher clay percentage around 500, 580 and 740 indicates low-energy (ponding) conditions under weak ISM. The well sorted nature of sediment indicates consistency of the lacustrine environments under fairly uniform energy and constant bottom water conditions, under varied monsoonal intensity. Combinations of sediment textures and stable isotope indicate intense ISM at similar to 480 and similar to 540 A.D. with flooding around similar to 700 A.D. and a weak monsoon at 580 and 740 A.D., with drought at 500 A.D. During similar to 900-1200 A.D. the multiproxy record suggests strong summer monsoon synchronous with Medieval Warm Period (MWP), whereas after 1200 A.D. the weak monsoon phase coincides with the onset of the Little Ice Age (LIA). (C) 2015 Elsevier Ltd and INQUA. All rights reserved.
机构:
Inst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Key Lab Black Soil & Water Resources Res Heilongji, Harbin 150036, Peoples R China
Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
Nat Resources Survey Inst Heilongjiang Prov, Harbin 150036, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Zhan, Tao
Yang, Ye
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Inst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Key Lab Black Soil & Water Resources Res Heilongji, Harbin 150036, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Yang, Ye
Liang, Yanxia
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Inst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Key Lab Black Soil & Water Resources Res Heilongji, Harbin 150036, Peoples R China
Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Liang, Yanxia
Liu, Xiaoyan
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Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Liu, Xiaoyan
Zeng, Fangming
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Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Zeng, Fangming
Ge, Junyi
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Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Ge, Junyi
Ma, Yongfa
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Inst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Key Lab Black Soil & Water Resources Res Heilongji, Harbin 150036, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Ma, Yongfa
Zhao, Keliang
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Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Zhao, Keliang
Zhou, Xinying
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Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Zhou, Xinying
Jiang, Xia
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Key Lab Black Soil & Water Resources Res Heilongji, Harbin 150036, Peoples R China
Heilongjiang Bur Geol & Mineral Resources, Harbin 150036, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Jiang, Xia
Huang, Rongfu
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Inst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Key Lab Black Soil & Water Resources Res Heilongji, Harbin 150036, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Huang, Rongfu
Wang, Xun
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Key Lab Black Soil & Water Resources Res Heilongji, Harbin 150036, Peoples R China
Heilongjiang Bur Geol & Mineral Resources, Harbin 150036, Peoples R China
Nat Resources Survey Inst Heilongjiang Prov, Harbin 150036, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Wang, Xun
Zhou, Xin
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Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
Zhou, Xin
Deng, Chenglong
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Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R ChinaInst Ecol Geol Survey & Res Heilongjiang Prov, Harbin 150030, Peoples R China
机构:
Cornell Coll, Dept Geol, Mt Vernon, IA 52314 USACornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Denniston, Rhawn F.
Wyrwoll, Karl-Heinz
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Univ Western Australia, Perth, WA 6009, AustraliaCornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Wyrwoll, Karl-Heinz
Polyak, Victor J.
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Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USACornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Polyak, Victor J.
Brown, Josephine R.
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Ctr Australian Weather & Climate Res, Melbourne, Vic, AustraliaCornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Brown, Josephine R.
Asmerom, Yemane
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Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USACornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Asmerom, Yemane
Wanamaker, Alan D., Jr.
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Iowa State Univ, Dept Geol & Atmospher Sci, Ames, IA USACornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Wanamaker, Alan D., Jr.
LaPointe, Zachary
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Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USACornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
LaPointe, Zachary
Ellerbroek, Rebecca
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Cornell Coll, Dept Geol, Mt Vernon, IA 52314 USACornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Ellerbroek, Rebecca
Barthelmes, Michael
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Cornell Coll, Dept Geol, Mt Vernon, IA 52314 USACornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Barthelmes, Michael
Cleary, Daniel
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Cornell Coll, Dept Geol, Mt Vernon, IA 52314 USACornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Cleary, Daniel
Cugley, John
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Kimberley Toad Busters, Kununurra, WA, AustraliaCornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Cugley, John
Woods, David
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Dept Environm & Conservat, Broome, WA, AustraliaCornell Coll, Dept Geol, Mt Vernon, IA 52314 USA
Woods, David
Humphreys, William F.
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Univ Western Australia, Perth, WA 6009, Australia
Western Australian Museum, Welshpool Dc, WA, Australia
Univ Adelaide, Adelaide, SA, AustraliaCornell Coll, Dept Geol, Mt Vernon, IA 52314 USA