India in the Nuna to Gondwana supercontinent cycles: Clues from the north Indian and Marwar Blocks

IF 1.9 3区 地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY
W. Wang, Peter A. Cawood, M. Pandit
{"title":"India in the Nuna to Gondwana supercontinent cycles: Clues from the north Indian and Marwar Blocks","authors":"W. Wang, Peter A. Cawood, M. Pandit","doi":"10.2475/01.2021.02","DOIUrl":null,"url":null,"abstract":"Evolution of the Indian Block can be traced through Earth's Phanerozoic and Precambrian supercontinent cycles. The Paleoproterozoic tectonostratigraphic record of the North Indian Block and the Aravalli Delhi Fold Belt in the Nuna supercontinent assembly shows a close link with the events in the Cathaysia Block of South China. Accretion of the two terranes is documented by 1.97 to 1.92 Ga continental arc igneous rocks and 1.91 to 1.81 Ga syn- and post-collisional magmatism in the Lesser Himalaya, along with 1.88 to 1.86 Ga granulite metamorphism in both continental blocks. The connection between the North Indian Block and the Cathaysia Block continued through Nuna dispersal and was followed by the accretion of a series of terranes/microcontinents along the western margin of this united North India-Cathaysia Block during Rodinia assembly (ca. 1.0 Ga). This is recorded by accretion of the Marwar Block to the North Indian Block and Yangtze Block to the Cathaysia Block. Long-lived active continental margins continued along Marwar (NW India), Yangtze, Madagascar and the Seychelles until ca. 720 Ma that jointly occupied a peripheral or even independent paleoposition in the Rodinia reconstructions. The eastern margin of India sutured with the Western Australia-Mawson blocks along the Kunnga Orogen during the final assembly of Gondwana in the early Paleozoic, whereas microcontinental blocks including south Qiangtang and north Lhasa, were accreted to the northern margin of Gondwana in the vicinity of India. The collision of this ensemble of blocks with Africa (western Gondwana) is marked by the East African Orogen/Mozambique Belt, extending through central east Africa, Madagascar, South India and Antarctica. However, further north, India was separated from the Arabian-Nubian Shield by an embayment of the proto-Tethys that remained integral until the breakup of Gondwana. The accretion of Laurussia to Gondwana in the mid-Paleozoic during the assembly of Pangea corresponds with lithospheric extension along the northern margin of India (Gondwana) and separation of several continental blocks including South China, south Qiangtang, and north Lhasa, which then drifted northward across the Paleo-Tethys to collide with the Asian segment of Pangea in the Permo-Triassic.","PeriodicalId":7660,"journal":{"name":"American Journal of Science","volume":"321 1","pages":"83 - 117"},"PeriodicalIF":1.9000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Journal of Science","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.2475/01.2021.02","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 13

Abstract

Evolution of the Indian Block can be traced through Earth's Phanerozoic and Precambrian supercontinent cycles. The Paleoproterozoic tectonostratigraphic record of the North Indian Block and the Aravalli Delhi Fold Belt in the Nuna supercontinent assembly shows a close link with the events in the Cathaysia Block of South China. Accretion of the two terranes is documented by 1.97 to 1.92 Ga continental arc igneous rocks and 1.91 to 1.81 Ga syn- and post-collisional magmatism in the Lesser Himalaya, along with 1.88 to 1.86 Ga granulite metamorphism in both continental blocks. The connection between the North Indian Block and the Cathaysia Block continued through Nuna dispersal and was followed by the accretion of a series of terranes/microcontinents along the western margin of this united North India-Cathaysia Block during Rodinia assembly (ca. 1.0 Ga). This is recorded by accretion of the Marwar Block to the North Indian Block and Yangtze Block to the Cathaysia Block. Long-lived active continental margins continued along Marwar (NW India), Yangtze, Madagascar and the Seychelles until ca. 720 Ma that jointly occupied a peripheral or even independent paleoposition in the Rodinia reconstructions. The eastern margin of India sutured with the Western Australia-Mawson blocks along the Kunnga Orogen during the final assembly of Gondwana in the early Paleozoic, whereas microcontinental blocks including south Qiangtang and north Lhasa, were accreted to the northern margin of Gondwana in the vicinity of India. The collision of this ensemble of blocks with Africa (western Gondwana) is marked by the East African Orogen/Mozambique Belt, extending through central east Africa, Madagascar, South India and Antarctica. However, further north, India was separated from the Arabian-Nubian Shield by an embayment of the proto-Tethys that remained integral until the breakup of Gondwana. The accretion of Laurussia to Gondwana in the mid-Paleozoic during the assembly of Pangea corresponds with lithospheric extension along the northern margin of India (Gondwana) and separation of several continental blocks including South China, south Qiangtang, and north Lhasa, which then drifted northward across the Paleo-Tethys to collide with the Asian segment of Pangea in the Permo-Triassic.
努纳至冈瓦纳超大陆旋回中的印度:来自北印度和马尔瓦尔地块的线索
印度地块的演化可以追溯到地球显生宙和前寒武纪超大陆旋回。努纳超大陆组合中北印度地块和Aravalli德里褶皱带的古元古代构造地层记录与华南华夏地块的事件有着密切的联系。小喜马拉雅地区1.97 ~ 1.92 Ga的大陆弧火成岩和1.91 ~ 1.81 Ga的同碰撞岩浆活动以及1.88 ~ 1.86 Ga的麻粒岩变质作用记录了这两个地块的增生。北印度地块与华夏地块之间的联系通过努纳分散继续进行,随后在罗迪尼亚组装(约1.0 Ga)期间,北印度-华夏地块联合的西边缘出现了一系列地体/微大陆的增生。这是由马尔瓦尔地块向北印度地块和扬子地块向华夏地块的增生所记录的。长期活跃的大陆边缘沿马尔瓦尔(印度西北部)、长江、马达加斯加和塞舌尔继续存在,直到大约720 Ma,它们在罗迪尼亚重建中共同占据了一个外围甚至独立的古位置。早古生代冈瓦纳最后拼合期间,印度东部边缘沿昆嘎造山带与西澳大利亚-莫森地块缝合,而印度附近的冈瓦纳北缘则增生了包括羌塘南部和拉萨北部在内的微陆块。这一地块群与非洲(冈瓦纳西部)的碰撞以东非造山带/莫桑比克带为标志,该带延伸至中非东部、马达加斯加、南印度和南极洲。然而,在更北的地方,印度被原始特提斯的封锁从阿拉伯-努比亚盾牌中分离出来,直到冈瓦纳分裂,这个盾牌仍然是完整的。在中古生代泛大陆拼合期间,Laurussia向Gondwana的增加与沿印度(Gondwana)北缘的岩石圈伸展和包括华南、南羌塘和拉萨北部在内的几个大陆块体的分离相对应,这些大陆块体随后向北漂移穿过古特提斯,在二叠纪-三叠纪与泛大陆亚洲板块碰撞。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
American Journal of Science
American Journal of Science 地学-地球科学综合
CiteScore
5.80
自引率
3.40%
发文量
17
审稿时长
>12 weeks
期刊介绍: The American Journal of Science (AJS), founded in 1818 by Benjamin Silliman, is the oldest scientific journal in the United States that has been published continuously. The Journal is devoted to geology and related sciences and publishes articles from around the world presenting results of major research from all earth sciences. Readers are primarily earth scientists in academia and government institutions.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信