Collaborative research: Testing Himalayan tectonic and erosional history via chronostratigraphic correlation between the Lesser Himalaya and Indian craton
合作研究:通过小喜马拉雅山和印度克拉通之间的年代地层相关性测试喜马拉雅构造和侵蚀历史
基本信息
- 批准号:1124545
- 负责人:
- 金额:$ 5.55万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2011
- 资助国家:美国
- 起止时间:2011-10-01 至 2015-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Collaborative Research: Testing Himalayan tectonic and erosional history via chronostratigraphic correlation between the Lesser Himalaya and Indian cratonNigel Hughes, University of California, Riverside EAR-1124303Shuhai Xiao, Virginia Tech EAR-1124026Paul Myrow, Colorado College EAR-1124518Ganging Jiang, Univ. Nevada, Las Vegas EAR-1124545ABSTRACT This project will test the hypotheses that (1) the Paleoproterozoic, Mesoproterozoic, Neoproterozoic, and Cambrian of all parts of the Himalaya are part of a continuous passive margin succession and not part of an accreted terrane; (2) that neodymium isotopic values (åNd) of Himalayan rocks are primarily controlled by depositional age, rather than by geographical source; and (3) that the erosion of Neoproterozoic and Cambrian material from the northern or "inner" part of the Lesser Himalaya (LH) requires that uplift in that region took place several million years before currently accepted. Confirmation of these hypotheses, which preliminary data suggests is likely, will be achieved by detailed stratigraphic correlation between strata of the Himalayan region and the Indian craton. If confirmed, our results will require that progressive unroofing of a continuous margin succession took place, initially with erosion of a thick succession of "outer" LH-age strata with a geochemical signature identical to that of the Greater and Tethyan Himalaya. As a consequence, the initiation of uplift of the LH took place significantly earlier in the Miocene than currently invoked, thus significantly revising the Cenozoic uplift history of the Himalayan region. Hence in addition to clarifying the pre-deformational history of the northern Indian margin, this proposal will impact understanding of Himalayan tectonics, uplift, and erosion. Furthermore, the fossils present in these deposits are poorly known and detailed analysis may also provide novel insights into early eukaryotic evolution.As the world's greatest mountain chain the Himalaya has significant impact on a wide range of environmental issues, ranging from the chemistry of ocean waters to the nature of global climate. Accurate understanding of this influence requires knowledge how global systems changed during the growth of these mighty mountains. This, in turn, requires knowledge of conditions prior to the event that initiated Himalayan uplift - the collision of the Indian subcontinent with Asia. This project brings together scientists with a wide range of experience who will jointly investigate the geological relationship between rocks that make up the much of the Himalayan bedrock and those that occur within the heart of India itself. This comparison will test the currently popular idea that much of the Himalaya is 'exotic', meaning that it was not originally attached to the core landmass of India. This idea is important because, if correct, it means that PIs can 'fingerprint' the uplift and erosional history of the Himalaya based on when ?exotic? and, when truly Indian materials, first appeared in the record of Himalayan uplift and erosion recorded in the rocks of the Bay of Bengal and other areas. PIs initial studies suggest that the 'exotic' idea is incorrect, and rests on a misunderstanding of the ages of formation of the original Himalaya rocks. If PIs are right, it will suggest that the southern Himalaya began uplift 5 million years before currently accepted, and will reconcile an important global geochemical shift with the timing of Himalayan uplift. In addition to training undergraduate and graduate students, this award also will facilitate publication of children?s book on global environmental change in a major Indian regional language, and its dissemination to village schools in rural Bengal.
合作研究:通过小喜马拉雅和印度喜马拉雅之间的年代地层对比测试喜马拉雅构造和侵蚀历史Nigel Hughes,加州大学,滨江肖树海,弗吉尼亚理工大学,1124026保罗·麦罗,科罗拉多学院,1124518江刚,内华达州,拉斯维加斯,1124545摘要本项目将测试以下假设:(1)古元古代,喜马拉雅地区中、新元古代和寒武系是一个连续的被动边缘序列的一部分,而不是一个增生的陆缘序列的一部分:(2)喜马拉雅岩石的钕同位素值(Δ Nd)主要受沉积时代的控制,而不是受地理来源的控制;(3)小喜马拉雅北方或“内部”新元古代和寒武纪物质的侵蚀要求该地区的隆起发生在目前公认的几百万年前。初步数据表明,这些假设的证实是可能的,将通过喜马拉雅地区和印度克拉通地层之间的详细地层对比来实现。如果得到证实,我们的研究结果将需要一个连续的利润继承渐进的去顶发生,最初与侵蚀的厚继承的“外”LH-年龄层的地球化学签名相同的大和特提斯喜马拉雅山。因此,启动隆升的LH发生在中新世比目前调用,从而显着修订新生代隆升历史的喜马拉雅地区。因此,除了澄清前变形历史的北方印度边缘,这一建议将影响喜马拉雅构造,隆起和侵蚀的理解。此外,这些矿床中的化石知之甚少,详细的分析也可能为早期真核生物的进化提供新的见解。作为世界上最大的山脉,喜马拉雅山对广泛的环境问题有重大影响,从海洋沃茨的化学到全球气候的性质。要准确理解这种影响,需要了解全球系统在这些巨大山脉的生长过程中如何变化。这反过来又需要了解喜马拉雅山隆起事件--印度次大陆与亚洲碰撞--发生之前的情况。该项目汇集了具有广泛经验的科学家,他们将共同研究构成喜马拉雅基岩的岩石与印度心脏地带的岩石之间的地质关系。这种比较将检验目前流行的观点,即喜马拉雅山的大部分地区是“外来的”,这意味着它最初并不与印度的核心大陆相连。这个想法很重要,因为如果正确的话,这意味着PI可以根据何时“指纹”喜马拉雅山的隆起和侵蚀历史?异国情调?而当真正的印度材料,最早出现在喜马拉雅山脉的隆起记录和孟加拉湾等地区的岩石侵蚀记录中。PI的初步研究表明,“异国情调”的想法是不正确的,并依赖于对原始喜马拉雅岩石形成年龄的误解。如果PI是正确的,它将表明南喜马拉雅山在目前接受的500万年前开始隆起,并将使一个重要的全球地球化学变化与喜马拉雅山隆起的时间相一致。除了培养本科生和研究生,这个奖项还将促进儿童的出版?他用一种主要的印度地方语言编写了一本关于全球环境变化的书,并将其传播到孟加拉农村的乡村学校。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
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Ganqing Jiang其他文献
Coronene spikes in the Ediacaran Doushantuo Formation, South China: A combustion origin?
华南埃迪卡拉系陡山沱组中的并五苯尖峰:燃烧起源?
- DOI:
10.1016/j.gloplacha.2025.104943 - 发表时间:
2025-10-01 - 期刊:
- 影响因子:4.000
- 作者:
Can Chen;Jiasheng Wang;Thomas J. Algeo;Xiaohong Chen;Kai Wei;Zhou Wang;Yongsong Huang;Ganqing Jiang - 通讯作者:
Ganqing Jiang
Benthic Foraminiferal Biostratigraphy, Microfacies Analysis and Depositional Environment during the PETM in the Tingri-Gamba Basin, Southern Tibet
西藏南部定日-岗巴盆地古新世-始新世极热事件期间底栖有孔虫生物地层学、微相分析与沉积环境
- DOI:
10.1016/j.palaeo.2024.112684 - 发表时间:
2025-03-01 - 期刊:
- 影响因子:2.700
- 作者:
Kezhantu Bao;Guobiao Li;David B. Kemp;Simin Jin;Ganqing Jiang;Tianyang Wang;Xingpeng Li;Xinfa Li;Yuewei Li;Wenyuan Zhang;Jie Ding;Youjia Yao;Jingjing Wang;Wenjing Zhang;Jiaoyu Li;Xi Xu - 通讯作者:
Xi Xu
A pulse of oxygen increase in the early Mesoproterozoic ocean at ca. 1.57–1.56 Ga
- DOI:
https:// doi.org/10.1016/j.epsl.2019.115797 - 发表时间:
2019 - 期刊:
- 影响因子:
- 作者:
Mohan Shang;Dongjie Tang;Xiaoying Shi;Limin Zhou;Xiqiang Zhou;Huyue Song;Ganqing Jiang - 通讯作者:
Ganqing Jiang
Carbonate concretions from the Gaoyuzhuang Formation (ca. 1.6 Ga) of the North China platform: Implication for a methane-rich Mesoproterozoic ocean
- DOI:
10.1007/s12583-010-0156-3 - 发表时间:
2010-06-01 - 期刊:
- 影响因子:4.700
- 作者:
Xiaoying Shi;Ganqing Jiang;Dongjie Tang - 通讯作者:
Dongjie Tang
<span style="font-size:10.5pt;font-family:" color:black;"="">Cyclostratigraphy and orbital tuning of the terrestrial upper Santonian-Lower Danian in Songliao Basin, northeastern China</span>
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:
- 作者:
Huaichun Wu;Shihong Zhang;Linda A. Hinnov;Ganqing Jiang;Tianshui Yang;Haiyan Li;Xiaoqiao Wan;Chengshan Wang; - 通讯作者:
Ganqing Jiang的其他文献
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{{ truncateString('Ganqing Jiang', 18)}}的其他基金
Collaborative Research: Ocean Redox Evolution at the Dawn of Animal Life: An Integrated Geological and Geochemical Study of the Ediacaran Yangtze Platform in South China
合作研究:动物生命初期的海洋氧化还原演化:华南埃迪卡拉纪扬子地台综合地质与地球化学研究
- 批准号:
0745825 - 财政年份:2008
- 资助金额:
$ 5.55万 - 项目类别:
Continuing Grant
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