Middle Triassic transcontinental connection between the North China Craton and the Paleo-Tethys Ocean

IF 8.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Communications Earth & Environment Pub Date : 2024-12-19 DOI:10.1038/s43247-024-01945-z
Heng Peng, Lin Ding, Chiyang Liu, Massimiliano Zattin, Jianqiang Wang, Licheng Wang
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Abstract

Middle Triassic paleogeography is essential for the paleoclimate change and ecosystem recovery after the end-Permian mass extinction, but is highly debated in the Paleo-Tethys Ocean and North China Craton, eastern Pangaea. Here we report a detailed provenance fingerprinting dataset from Middle Triassic sediments across the North China Craton, Qinling and Songpan-Ganzi and identify the paleo-uplift in the northern North China Craton as a primary sediment source. We propose that a Middle Triassic transcontinental drainage system flowed from the northern North China Craton through the central Qinling into the eastern Paleo-Tethys Ocean along the gradually descending landform, challenging the suggestion that the North China Craton was a great endorheic basin. The finding of this study will provide a better understanding of Middle Triassic physiography and paleogeography of the North China Craton. Such heterogeneous paleotopography and transcontinental drainage played a critical role in the marine-terrestrial ecosystems of the eastern Pangaea. A transcontinental drainage system transported sediments from the North China Craton into the eastern Paleo-Tethys Ocean in the Middle Triassic, as shown by a multi-proxy provenance and paleogeographic study from MiddleTriassic sediments from the North China Craton, Qinling, and Songpan-Ganzi regions.

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华北克拉通与古特提斯洋的中三叠世跨大陆连接
中三叠世古地理对二叠纪末大灭绝后的古气候变化和生态系统恢复至关重要,但在泛大陆东部古特提斯洋和华北克拉通的古地理研究中存在很大争议。本文报道了华北克拉通、秦岭和松潘-甘孜地区中三叠统沉积物的详细物源指纹图谱,并确定华北克拉通北部古隆起为主要沉积源。我们认为华北克拉通北部有一个中三叠世横贯大陆的水系,流经中秦岭,沿着逐渐下降的地形进入古特提斯洋东部,挑战了华北克拉通是一个巨大的内陆盆地的说法。研究结果将为进一步认识华北克拉通的中三叠世地貌和古地理提供依据。这种不均匀的古地形和横贯大陆的水系在盘古大陆东部的海陆生态系统中起着至关重要的作用。中三叠世华北克拉通、秦岭和松潘-甘孜地区中三叠世沉积物的多代物源和古地理研究表明,中三叠世华北克拉通的横贯大陆排水系统将沉积物输送到东部古特提斯洋。
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来源期刊
Communications Earth & Environment
Communications Earth & Environment Earth and Planetary Sciences-General Earth and Planetary Sciences
CiteScore
8.60
自引率
2.50%
发文量
269
审稿时长
26 weeks
期刊介绍: Communications Earth & Environment is an open access journal from Nature Portfolio publishing high-quality research, reviews and commentary in all areas of the Earth, environmental and planetary sciences. Research papers published by the journal represent significant advances that bring new insight to a specialized area in Earth science, planetary science or environmental science. Communications Earth & Environment has a 2-year impact factor of 7.9 (2022 Journal Citation Reports®). Articles published in the journal in 2022 were downloaded 1,412,858 times. Median time from submission to the first editorial decision is 8 days.
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