Sasa, Guo, Zhanli, Ren, Kerr, Andrew C.  ORCID: https://orcid.org/0000-0001-5569-4730, Kai, Qi and Guangyuan, Xing
2026.
Tectonic differentiation and thermal history of the eastern Ordos Basin (central-western China) since the Mesozoic.
Geological Magazine
163
, e13.
10.1017/S0016756826100545
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Abstract
The eastern Ordos Basin is situated in a transitional zone between the stable Ordos craton and an adjacent active orogenic belt. Episodic tectonic uplift and subsequent cooling of the eastern Ordos Basin since the Mesozoic have been spatially and temporally heterogeneous, with uplift and cooling commencing earlier in the central and northern segments than in the south. To constrain the differential tectono-thermal history of the eastern region, apatite fission-track analyses were carried out on Upper Palaeozoic samples from distinct tectonic units, and new data are presented. The results identify four discrete episodes of rapid exhumation at 110 Ma, 70 Ma, 50 Ma, and 30 Ma, confirming a heterogeneous uplift and exhumation history of the region since the Early Cretaceous. The Eastern Ordos has experienced three phases of uplift. North-south thermal histories differ significantly: the south shows later, rapid cooling (50 m/Ma, 110–90 Ma), while the north shows earlier, slower exhumation (25 m/Ma, 130–90 Ma). Since 30 Ma, the southern area experienced accelerated uplift, contrasting with the moderate exhumation observed in the north and centre. We infer that differential tectonic uplift, exhumation, and the cooling process are coupled to underlying mantle dynamics, which have resulted in the complex structure of the eastern basin. This research provides significant implications for reconstructing the divergent thermal evolution pathways of its various tectonic units.
| Item Type: | Article |
|---|---|
| Date Type: | Published Online |
| Status: | Published |
| Schools: | Schools > Earth and Environmental Sciences |
| Publisher: | Cambridge University Press |
| ISSN: | 0016-7568 |
| Date of First Compliant Deposit: | 2 March 2026 |
| Date of Acceptance: | 8 January 2026 |
| Last Modified: | 11 Mar 2026 10:22 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/185377 |
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