Fission track ages and Mesozoic tectonic uplift in the Niushoushan-Luoshan area on the western edge of the Ordos Basin

The western margin of the Ordos Basin and its adjacent regions have undergone a complex tectonic evolution from the Mesozoic to the Cenozoic era. However, the question of tectonic uplift since the Cenozoic era remains a topic of contention, and the regional thermal evolution history necessitates pre...

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Published inDizhi Lixue Xuebao Vol. 29; no. 5; pp. 599 - 617
Main Authors TIAN Zhaoyang, CHEN Hong, LIU Xinshe, GONG Wangbin, ZHAO Weibo, KANG Rui
Format Journal Article
LanguageChinese
Published Institute of Geomechanics, Chinese Academy of Geological Sciences 01.10.2023
Subjects
chronology
fission track
mesozoic
niushoushan-luoshan
ordos
tectonic uplift
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Summary:The western margin of the Ordos Basin and its adjacent regions have undergone a complex tectonic evolution from the Mesozoic to the Cenozoic era. However, the question of tectonic uplift since the Cenozoic era remains a topic of contention, and the regional thermal evolution history necessitates precise chronological evidence. Situated close to the thrust belt within the western margin of the Ordos Basin, the Niushoushan-Luoshan area holds pivotal significance in unraveling the Mesozoic tectonic events within the basin's confines. Through a meticulous exploration employing apatite fission track (AFT) analysis and thermal history simulation, this study delineates the Mesozoic uplift sequence and its temporal confines in the Niushoushan-Luoshan area. The results reveal that the Mesozoic uplift within this region predominantly occurred during the Middle Jurassic period (170 Ma) to the end of the Early Cretaceous (110 Ma). Furthermore, we observe a slightly earlier onset of uplift in the Luoshan area (170 Ma) com
ISSN:1006-6616
DOI:10.12090/j.issn.1006-6616.2023030