Paleo-Mesoproterozoic Rifting Along the Margins of Archean Bundelkhand Craton North-Central India: Timing the Event from U–Pb SHRIMP Zircon Data and Their Geodynamic Implications

Author:

Shrivastava Anuj K.1,Raza Mohammad B.2,Saha Lopamudra1ORCID,Yi Keewook3,Nasipuri Pritam2ORCID,Pati Jayanta K.45

Affiliation:

1. 1 Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India

2. 2 Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, 462066, India

3. 3 Korea Basic Science Institute, (202 dong)162 Yeongu-Danji-ro, OChang, CheongWon-gu, Cheongju, Chungbuk 28119, Republic of Korea

4. 4 National Center of Experimental Mineralogy and Petrology (NCEMP), University of Allahabad, Allahabad, Uttar Pradesh, 211002, India

5. 5 Department of Earth & Planetary Sciences, Nehru Science Centre, University of Allahabad, Allahabad, Uttar Pradesh, 211002, India

Abstract

Abstract In this article, novel geochronological (U–Pb SHRIMP) and geochemical data are presented from the lowermost sandstone unit (Par formation), basement granites of Gwalior Basin and sandstones from the Bhopal Basin, located along margins of the Archaean Bundelkhand Craton. The geochemical variation diagrams imply that sandstone units in the Gwalior and Bhopal Basins were deposited in rift-induced passive margin tectonic settings. In contrast to the magmatic features that are preserved in the zircons of granite of the Gwalior Basins, detrital zircons from sandstones of both basins are fragmentary and polymodal in size. The magmatic zircon grains from the basement granites yield a 207Pb/206Pb concordant age of 2538 ± 2 Ma. A group of detrital zircons from the sandstone of the Gwalior Basin with concentric magmatic zonation yield a weighted mean average age of 2564 ± 24 Ma. The detrital zircons from Gwalior Basin exhibit a patchy U-Th distribution overgrowing the magmatic zonation yield average age of 2044 ± 2 Ma. The detrital zircons from the Bhopal basin yield three distinct concordant ages of 2511 ± 5, 1694 ± 6, and 1355±9 Ma. The presence of ~2540 Ma concordant zircon population with concentric zonation in the sandstone of Bhopal Basin suggests their derivation from the granite of similar age. Therefore, an extension of Bundelkhand Craton granite below the Bhopal Basin is suggested. The 2500 Ma ages from the Gwalior granites are linked to global magmatic activity leading to the stabilization of extended Ur at ~2500 Ma. The 2048 and 1355 Ma ages from the Gwalior and Bhopal Basins, respectively, are concluded as the maximum depositional age (MDA) of the lowermost stratigraphic units within the basins. The MDAs are concluded to be the timings of passive margin basin formations along margins of the Bundelkhand Craton during extended Ur and Nuna or Columbia disintegration, respectively, during plume-driven tectonics.

Publisher

GeoScienceWorld

Subject

Geology

Reference107 articles.

1. “Breakup of a Paleoproterozoic Supercontinent,”;Condie;Gondwana Research,2002

2. “Superplume, Supercontinent, and post-Perovskite: Mantle Dynamics and anti-plate Tectonics on the core-Mantle boundary,”;Maruyama;Gondwana Research,2007

3. “The Supercontinent cycle,”;Mitchell;Nature Reviews Earth & Environment,2021

4. “Detrital Zircon U-PB Geochronology applied to Tectonics,”;Gehrels;Annual Review of Earth and Planetary Sciences,2014

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3