编号：CDUT-2022-19

标题：Sedimentary sequence and evolutionary history of the Proterozoic basin at the southern margin of the North China Craton

入藏号：WOS:000536778900013

中国科学院文献情报中心期刊分区：地球科学1区/TOP（2020年升级版）

本校作者：岳亮;刘自亮*;陈洪德

来源出版物：PRECAMBRIAN RESEARCH 卷: 344 文献号: 105765

出版年：2020

第一地址：成都理工大学

关键词：元古宇；地层序列；微生物成因沉积构造；臼齿构造；沉积响应；哥伦比亚超大陆

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摘要：Aulacogen/Rift system deposits and tectonic-magmatic activities can be linked to the breakup of the Columbiasupercontinent and have developed in the North China Craton (NCC). The Xiong'er Basin at the southern marginof the NCC consists of late Palaeoproterozoic-Neoproterozoic sedimentary strata and can be divided into threesedimentary sequences. Sedimentary Sequence I (1.83–1.75 Ga) consists of bimodal volcanic-sedimentary rocksof the Xiong'er Group with continental-marine facies and alluvial fan deposits of the Bingmagou Formation withlocal development. It represents the evolution of the intracontinental fault from initiation to decline.Sedimentary Sequence II (1.75–1.6 Ga) developed after the southern margin of the NCC entered a stable con tinental margin stage, is dominated by clastic rocks interbedded with local carbonate deposits, and fills theinterior of the basin. As continuous transgression led to a transition in the sedimentary environment, sedi mentary Sequence III (1.6–1.4 Ga) is dominated by carbonate strata that began to develop afterwards. Thissequence is the caprock deposit in the Xiong'er Basin. Subsequently, tectonic uplift events occurred at thesouthern margin of the NCC, along with the start of exposure and denudation, which lasted for hundreds ofmillions of years. Moreover, abundant microbially induced sedimentary structures (MISS) with different mor phological characteristics developed in clastic strata across different areas of the Xiong'er Basin. These structureseffectively indicate sedimentary facies and their evolution, which facilitates the establishment of regionalstratigraphic isochronous correlation and connection. For example, based on the time limit for the developmentof molar-tooth structures (MTS), the Hejiazhai Formation belongs to the Neoproterozoic strata, with a depositiontime of 1.0–0.72 Ga. In conclusion, the study of the Precambrian sedimentary succession in the Xiong'er Basin, inresponse to the supercontinental breakup, can be useful in exploring the coupling mechanisms between variousgeological events.

文章链接地址：https://www.sciencedirect.com/science/article/pii/S0301926819304449?via%3Dihub