Zhu, C., Qiu, N., Liu, Y., Xiao, Y. and Hu, S. (2019) Constraining the denudation process in the eastern Sichuan Basin, China using low-temperature thermochronology and vitrinite reflectance data. Geological Journal, 54(1), pp. 426-437. (doi: 10.1002/gj.3191)
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Abstract
The temperature history of samples and maximum palaeogeothermal profiles of boreholes were reconstructed based on low‐temperature thermochronology and vitrinite reflectance data, and the results provide limits for the timescale and amount of uplift–denudation of the eastern Sichuan Basin. The thermal history showed that the uplifting and cooling of eastern Sichuan Basin began around the Late Cretaceous (approximately 100–80 Ma). The region had experienced a continuous cooling process from the Late Cretaceous until the present, with the geothermal gradient decreasing from 32–36 °C/km to 20–23 °C/km. The amount of denudation at the Puguang region in north‐eastern Sichuan was approximately 2.3 km, whereas that at south‐eastern Sichuan was 1.9 km, and the erosion thickness in the eastern Sichuan fold belt that was revealed via the field samples is 2.3 ± 0.3–2.6 ± 0.3 km. The north‐eastern Sichuan experienced sustained cooling with inconspicuous fluctuations, whereas the thrust belt and the south‐eastern Sichuan Basin presented 2–4 stages with different cooling rates. It may indicate that the eastern Sichuan fold belt experienced a complex structural evolution, characterized by episodic upliftings and deformations since Late Cretaceous, while a different and gentle deformation took place in the northeastern Sichuan Basin.
| Item Type: | Articles |
|---|---|
| Additional Information: | The study was supported by the National Natural Science Foundation of China (Grant No. 41772248, 41690013) “National Science and the Technology Major Project” of China (Grant No. 2017ZX05008004). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Zhu, Dr Chuanqing |
| Authors: | Zhu, C., Qiu, N., Liu, Y., Xiao, Y., and Hu, S. |
| College/School: | College of Science and Engineering > School of Geographical and Earth Sciences > Earth Sciences |
| Journal Name: | Geological Journal |
| Publisher: | Wiley |
| ISSN: | 0072-1050 |
| ISSN (Online): | 1099-1034 |
| Published Online: | 14 March 2018 |
| Copyright Holders: | Copyright © 2018 John Wiley and Sons Ltd |
| First Published: | First published in Geological Journal 54(1):426-437 |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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