Digital paleogeographic reconstruction of the eastern Tethyan tectonic domain from the Middle Permian to the Middle Triassic

Mengxia Tang; Qiang Ren; Mingcai Hou; Zhilin Li; Wen Du; Anqing Chen; Hanting Zhong; Jicheng Wang; Peng Ti

Geosystems and Geoenvironment (May 2024)

Digital paleogeographic reconstruction of the eastern Tethyan tectonic domain from the Middle Permian to the Middle Triassic

Mengxia Tang,
Qiang Ren,
Mingcai Hou,
Zhilin Li,
Wen Du,
Anqing Chen,
Hanting Zhong,
Jicheng Wang,
Peng Ti

Affiliations

Mengxia Tang: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; Key Laboratory of Deep-time Geography and Environment Reconstruction and Applications, MNR & Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China; College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China
Qiang Ren: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; Key Laboratory of Deep-time Geography and Environment Reconstruction and Applications, MNR & Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China; Corresponding author.
Mingcai Hou: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; Key Laboratory of Deep-time Geography and Environment Reconstruction and Applications, MNR & Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China
Zhilin Li: Faculty of Geosciences and Environmental Engineering and The State-Province Joint Engineering Laboratory of Geospatial Information Technology for High-Speed Railway Safety, Southwest Jiaotong University, Chengdu 611756, China
Wen Du: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; Key Laboratory of Deep-time Geography and Environment Reconstruction and Applications, MNR & Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China
Anqing Chen: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; Key Laboratory of Deep-time Geography and Environment Reconstruction and Applications, MNR & Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China
Hanting Zhong: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; Key Laboratory of Deep-time Geography and Environment Reconstruction and Applications, MNR & Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China
Jicheng Wang: Faculty of Geosciences and Environmental Engineering and The State-Province Joint Engineering Laboratory of Geospatial Information Technology for High-Speed Railway Safety, Southwest Jiaotong University, Chengdu 611756, China
Peng Ti: Faculty of Geosciences and Environmental Engineering and The State-Province Joint Engineering Laboratory of Geospatial Information Technology for High-Speed Railway Safety, Southwest Jiaotong University, Chengdu 611756, China

Journal volume & issue: Vol. 3, no. 2
p. 100127

Abstract

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Paleogeographic reconstruction studies the evolution of the earth's surface tectonic process, the pattern of land and sea, climate, and biology in time and space in geological history. With the advent of the big data era, the accuracy of the digital paleogeographic reconstruction is essential. Although there are various global paleogeographic reconstruction models, there is still a lack of paleogeographic reconstruction integrating tectonic, lithofacies, paleontology, and paleoclimate data. In this paper, a case study of the comprehensive paleogeographic reconstruction is carried out in the Middle Permian-Middle Triassic eastern Tethyan tectonic domain, which is highly concerned and rich in geological data accumulation. The digital paleogeographic map is completed by the combination of automatic mapping with machine learning and manual correction. We use the newly upgraded paleomagnetic, geological and paleontological data to reconstruct the paleoposition of the East Asian blocks at 260, 250 and 240 Ma, which shows the Paleo-Tethys Ocean (PTO) had a wider east-west range than the previous version due to adopting the method of Torsvik et al. (2008) to reconstruct the paleolongitude of South China at 260 Ma. The new model shows the PTO was semi-closed with several narrow seaways and was divided into north and south branches at 260 Ma. Based on the updated lithofacies paleogeographic map data of China and marine fossils data, we updated the paleogeographic map of the Eastern Tethyan tectonic domain on the basis of the global paleogeographic map, combining automatic mapping with machine learning and manual revision of paleotopography and paleocoastline. Based on the new tectonic paleogeographic reconstruction, we revised the paleoclimate zonation pattern of the East Tethys ocean using climate-sensitive lithologies.

Published in Geosystems and Geoenvironment

ISSN: 2772-8838 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Geography. Anthropology. Recreation: Physical geography
Website: https://www.journals.elsevier.com/geosystems-and-geoenvironment

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