Late Neogene environmental changes in the central Himalaya related to tectonic uplift and orbital forcing

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	Late Neogene environmental changes in the central Himalaya related to tectonic uplift and orbital forcing
	Wang, Yang 1,2; Deng, Tao3 ; Flynn, Lawrence 4; Wang, Xiaoming 5; Yin, An 6,7; Xu, Yingfeng 1,2; Parker, William 1,2; Lochner, Eric 8; Zhang, Chunfu 1,2; Biasatti, Dana 1,2,9
	2012-01-30
发表期刊	JOURNAL OF ASIAN EARTH SCIENCES
卷号	44 期号:1 页码:62-76
文章类型	Article
摘要	The linkage between tectonic forces and climate evolution remains a matter of much debate and speculation. Here we present high-resolution oxygen and carbon isotope data from an ancient lake basin in the central Himalaya. These data, together with sedimentologic evidence, reveal major changes in drainage systems and depositional settings at similar to 7.2, similar to 5.5 and similar to 3.2 Ma. These environmental changes appear to be driven by regional-scale tectonics. The oxygen isotope record also reveals alternating wet and dry climates with periodicities of 24 and 100 kyr that were likely controlled by orbital forcing. Paleo-temperatures, estimated using a fossil-based oxygen isotope "paleo-thermometer", are 21 +/- 6 degrees C at similar to 7 Ma, which is 19 +/- 6 degrees C higher than the present-day mean annual temperature in the same area. The much warmer environment inferred here is consistent with fossil mammalian and pollen assemblages and sediment clay mineralogy as well as carbon isotope data from fossil tooth enamels and paleosol carbonates. The estimated temperature difference would require the study area to have been raised by similar to 2-2.5 km since 7 Ma to its current elevation of 4100-4500 m above sea level. This result can be interpreted as either indicating the presence of a low-altitude intermountain basin in the hanging wall of the already formed Main Central Thrust or a protracted development of a north-trending rift basin that has experienced changes in drainage system and depositional environment through time. (C) 2011 Elsevier Ltd. All rights reserved.
关键词	Paleo-lake Basin Mammalian Fossils Stable Isotopes Neogene Environmental Change Himalaya Tibetan Plateau
WOS标题词	Science & Technology ; Physical Sciences
关键词[WOS]	MAIN CENTRAL THRUST ; ISOTOPE-BASED PALEOALTIMETRY ; EOCENE-OLIGOCENE TRANSITION ; CENTRAL NORTH-AMERICA ; TIBETAN PLATEAU ; STABLE-ISOTOPE ; LATE MIOCENE ; SOUTHERN TIBET ; CLIMATE-CHANGE ; PALEOELEVATION RECONSTRUCTIONS
收录类别	SCI
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000300203200006
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/2114
专题	古哺乳动物研究室
作者单位	1.Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA 2.Natl High Magnet Field Lab, Tallahassee, FL 32306 USA 3.Chinese Acad Sci, Key Lab Evolutionary Systemat Vertebrates, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 4.Harvard Univ, Peabody Museum, Cambridge, MA 02138 USA 5.Nat Hist Museum Los Angeles Cty, Dept Vertebrate Paleontol, Los Angeles, CA USA 6.Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA 7.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA 8.MARTECH, Analyt Facil, Tallahassee, FL 32306 USA 9.Two Med Dino Ctr, Bynum, MT 59419 USA
推荐引用方式 GB/T 7714	Wang, Yang,Deng, Tao,Flynn, Lawrence,et al. Late Neogene environmental changes in the central Himalaya related to tectonic uplift and orbital forcing[J]. JOURNAL OF ASIAN EARTH SCIENCES,2012,44(1):62-76.
APA	Wang, Yang.,Deng, Tao.,Flynn, Lawrence.,Wang, Xiaoming.,Yin, An.,...&Biasatti, Dana.(2012).Late Neogene environmental changes in the central Himalaya related to tectonic uplift and orbital forcing.JOURNAL OF ASIAN EARTH SCIENCES,44(1),62-76.
MLA	Wang, Yang,et al."Late Neogene environmental changes in the central Himalaya related to tectonic uplift and orbital forcing".JOURNAL OF ASIAN EARTH SCIENCES 44.1(2012):62-76.

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