Building India: Clues from the Singhbhum Craton & Southern India
建设印度:辛格布姆克拉通的线索
基本信息
- 批准号:1347942
- 负责人:
- 金额:$ 23万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2014
- 资助国家:美国
- 起止时间:2014-08-15 至 2018-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This award is focused on understanding the geological history of the Indian subcontinent and the complexities of its formation. Like many continents, India is composed of several geographically and geologically distinct elements that were welded together to form modern-day Peninsular India. The principal investigators for this project are examining two regions in India that are poorly studied (Singhbhum craton-northeast India and the southern Indian Dharwar craton and surrounding region). The project involves a combination of paleomagnetic and geochronologic studies that provide us with information regarding where and when these continental blocks were incorporated into India along with their relationship to other landmasses during the Proterozoic Eon (2.5 billion to 540 million years ago). It is hypothesized that the Indian subcontinent or some of its sub-regions may have been part of two ancient supercontinents called Rodinia and Columbia. This research is aimed at deciphering the complexities of how these supercontinents were assembled and subsequently dispersed due to plate tectonics, as well as examining any potential links to concomitant changes in the biosphere and climate. This project will provide key information regarding the timing and location of the suture/rift zones between continental blocks within India and the larger landmasses of Columbia and Rodinia. The work involves an international team of scientists from the United States, India, and Canada. In addition to the research objectives of the project, the award is supporting the training of undergraduate and graduate graduate students in a STEM discipline. The principal investigators are working to broaden participation of underrepresented groups in STEM by recruiting students from under-represented groups in the Geosciences. The research results from this project will be disseminated through top journals, meetings, presentations at K-12 educational institutions and other public outreach efforts. Our knowledge of Proterozoic supercontinents such as Rodinia and Columbia are based on a relatively small (but growing) paleomagnetic database. East Gondwana (Australia, Antarctica, India, Madagascar and Sri Lanka) is a critical piece of the supercontinental models. Only India and Australia contain rocks that are relatively un-deformed and un-metamorphosed considered useful for paleomagnetic studies. Our goal in this proposal is to fill in critical gaps in India's drift history through the combined use of paleomagnetism and geochronology. The results are providing researchers with key tie points in reconstructing past continental assemblies. These reconstructions, in turn, will be evaluated for their effects on global climate change, evolution, mantle dynamics and mineral exploration. The key focus of this proposal is to obtain high-quality paleomagnetic data from a series of dykes in the Singhbhum craton and localities in southern India. These data will include geochronological data and field tests to fully constrain the age of magnetization in the rocks. The methodologies employed in this proposal have already proven effective in improving our knowledge of India?s relationship to other landmasses. This proposal will obtain well-dated paleomagnetic poles from the Singhbhum craton (east-central India) and the southernmost Dharwar craton (south India) in an effort to: (a) expand the Proterozoic paleomagnetic and geochronological database for India (its barcode); (b) use paleomagnetism to test cratonic coherence between the north and south Indian cratons across the Central Indian Tectonic zone during the Proterozoic; (c) establish the extent of a proposed ~1.9 Ga radiating dyke swarm already established in the Bastar and Dharwar cratons and (d) establish the position of India in the supercontinents of Rodinia and Columbia. These ideas will be tested by collecting paleomagnetic and geochronologic samples from the targeted regions within India.
该奖项旨在了解印度次大陆的地质历史及其形成的复杂性。 像许多大陆一样,印度由几个地理和地质上不同的元素组成,这些元素焊接在一起形成了现代的印度半岛。 该项目的主要研究人员正在研究印度两个研究不足的地区(印度东北部的Singhbhum craton和印度南部的Dharwar craton及周边地区)。 该项目涉及古地磁和地质年代学研究的结合,为我们提供有关这些大陆块在元古宙(25亿至5.4亿年前)期间沿着与其他大陆块的关系以及何时何地并入印度的信息。 据推测,印度次大陆或它的一些次区域可能是两个古老的超级大陆Rodinia和哥伦比亚的一部分。 这项研究的目的是破译这些超级大陆如何组装并随后由于板块构造而分散的复杂性,以及研究与生物圈和气候伴随变化的任何潜在联系。该项目将提供关于印度大陆块与哥伦比亚和Rodinia较大陆块之间缝合/裂谷带的时间和位置的关键信息。 这项工作涉及来自美国,印度和加拿大的国际科学家团队。 除了该项目的研究目标外,该奖项还支持STEM学科的本科生和研究生的培训。主要研究人员正在努力通过从地球科学中代表性不足的群体中招募学生来扩大代表性不足的群体在STEM中的参与。 该项目的研究成果将通过顶级期刊,会议,K-12教育机构的演讲和其他公共宣传活动进行传播。 我们对Rodinia和哥伦比亚等元古宙超大陆的了解是基于一个相对较小(但不断增长)的古地磁数据库。东冈瓦纳(澳大利亚,南极洲,印度,马达加斯加和斯里兰卡)是超大陆模型的关键部分。只有印度和澳大利亚含有相对未变形和未变质的岩石,被认为对古地磁研究有用。我们的目标是通过结合使用古地磁学和地质年代学来填补印度漂移历史中的关键空白。这些结果为研究人员提供了重建过去大陆组合的关键联系点。这些重建,反过来,将评估其对全球气候变化,演化,地幔动力学和矿产勘探的影响。该建议的重点是从Singhbhum克拉通和印度南部地区的一系列堤坝中获得高质量的古地磁数据。这些数据将包括地质年代学数据和实地测试,以充分限制岩石的磁化年龄。在这个建议中采用的方法已经证明有效地提高我们对印度的了解?与其他大陆的关系。这项建议将获得来自Singhbhum克拉通的年代明确的古磁极(印度中东部)和最南端的达尔瓦尔克拉通(a)扩大印度元古宙古地磁和年代学数据库(其条形码);(B)使用古地磁来测试在元古代期间横跨中印度构造带的北印度板块和南印度板块之间的磁相干性;(c)确定在Bastar和Dharwar盆地已经建立的约1.9 Ga辐射岩墙群的范围;(d)确定印度在Rodinia和哥伦比亚超大陆中的位置。这些想法将通过收集印度目标地区的古地磁和地质年代学样本进行测试。
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)
专利数量(0)
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Joseph Meert其他文献
Multistage melt–rock interaction and redox evolution during chromitite formation in the Bulqiza ophiolite (Albania): Constraints from Mӧssbauer spectroscopy, Feimg class="glyph" src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/sbnd" /Mg isotopes and chromitite geochemistry
布尔奇察蛇绿岩(阿尔巴尼亚)中铬铁矿形成过程中的多阶段熔体-岩石相互作用和氧化还原演化:来自穆斯堡尔光谱、铁镁同位素和铬铁矿地球化学的约束
- DOI:
10.1016/j.chemgeo.2025.122948 - 发表时间:
2025-09-30 - 期刊:
- 影响因子:3.600
- 作者:
Fahui Xiong;Basem Zoheir;Joseph Meert;Xiangzhen Xu;Tian Qiu;Xuxuan Ma;Ibrahim Milushi;Jingsui Yang - 通讯作者:
Jingsui Yang
Joseph Meert的其他文献
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{{ truncateString('Joseph Meert', 18)}}的其他基金
Acquisition of a JR-6A Spinner Magnetometer
购买 JR-6A 旋转磁力计
- 批准号:
2207720 - 财政年份:2022
- 资助金额:
$ 23万 - 项目类别:
Standard Grant
Incredible India: High Resolution Proterozoic Paleogeography through integrated studies of mafic dykes
不可思议的印度:通过镁铁质岩脉综合研究进行高分辨率元古代古地理
- 批准号:
1850693 - 财政年份:2019
- 资助金额:
$ 23万 - 项目类别:
Standard Grant
Ediacaran Paleomagnetism and Geochronology of Eastern Baltica: A Key to Paleogeography and Climatic History of the Continent
埃迪卡拉古地磁学和东波罗的海地质年代学:大陆古地理和气候史的关键
- 批准号:
1119038 - 财政年份:2011
- 资助金额:
$ 23万 - 项目类别:
Standard Grant
Further Refinement of India's Proterozoic Paleogeography and Geochronology
印度元古代古地理和地质年代学的进一步完善
- 批准号:
0910888 - 财政年份:2009
- 资助金额:
$ 23万 - 项目类别:
Standard Grant
Paleomagnetism of Neoproterozoic to Lower Paleozoic Rocks on Microcontinents of Central Asia: Implications for the Precambrian Glacial Paradox and Amalgamation of Eurasia
中亚微大陆新元古代至下古生界岩石的古地磁:对前寒武纪冰川悖论和欧亚大陆合并的启示
- 批准号:
0508597 - 财政年份:2005
- 资助金额:
$ 23万 - 项目类别:
Continuing Grant
The Assembly of East Gondwana: A Proterozoic Perspective from India
东冈瓦纳大陆的组装:来自印度的元古代视角
- 批准号:
0409101 - 财政年份:2004
- 资助金额:
$ 23万 - 项目类别:
Standard Grant
RUI: Neoproterozoic Madagascar: Its Paleoposition and Role in the Assembly of Gondwana
RUI:新元古代马达加斯加:其古位置及其在冈瓦纳大陆组装中的作用
- 批准号:
9805306 - 财政年份:1998
- 资助金额:
$ 23万 - 项目类别:
Standard Grant
Acquisition of Paleomagnetic Lab Equipment
购置古地磁实验室设备
- 批准号:
9521571 - 财政年份:1995
- 资助金额:
$ 23万 - 项目类别:
Standard Grant
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