Preprints
https://doi.org/10.5194/cp-2021-108
https://doi.org/10.5194/cp-2021-108
05 Oct 2021
 | 05 Oct 2021
Status: this discussion paper is a preprint. It has been under review for the journal Climate of the Past (CP). The manuscript was not accepted for further review after discussion.

Low-latitude climate change linked to high-latitude glaciation during the Late Paleozoic Ice Age: evidence from the terrigenous detrital kaolinite

Peixin Zhang, Jing Lu, Minfang Yang, Longyi Shao, Ziwei Wang, and Jason Hilton

Abstract. The Late Paleozoic Ice Age (LPIA; ca. 360–260 million years ago) was one of the most significant glacial events in Earth history that records cycles of ice advance and retreat in southern high-latitude Gondwana and provides a deep-time perspective for climate-glaciation coevolution. However, climate records from the LIPA are poorly understood in low latitudes, particularly in the North China Plate (NCP) on the eastern Palaeo-Tethys. We address this through a detailed mineralogical study of the marine-continental sedimentary succession in the Yuzhou Coalfield from the southern NCP in which we apply Zircon U-Pb dating, biostratigraphy, and high-resolution clay mineral composition to reconstruct latest Carboniferous to early Permian chronostratigraphy and climate change. The Benxi, Taiyuan, and Shanxi formations in the study area are assigned to the Gzhelian, Asselian-Artinskian, and Kungurian-Roadian stages respectively and the Carboniferous Permian lithostratigraphy across NCP recognized as widely diachronous. Detrital micromorphology of kaolinite under scanning electron microscopy and illite crystallization indicates kaolinite contents to be a robust proxy for palaeoclimate reconstruction. Kaolinite data show alternating warm-humid and cool-humid climate conditions that are roughly consistent with the calibrated glacial-interglacial successions recognized in high-latitude eastern Australia, including the glaciations P1 (Asselian-early Sakmarian) and P2 (late Sakmarian-early Artinskian), as well as the climatic transition to glaciation P3 (Roadian). Our results indicate a comparatively cool-humid and warm-humid climate mode in low-latitude NCP during glacial and interglacial periods, and this is a significant step toward connecting climate change in low-latitudes to high-latitude glaciation during the LPIA.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Peixin Zhang, Jing Lu, Minfang Yang, Longyi Shao, Ziwei Wang, and Jason Hilton

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on cp-2021-108', Anonymous Referee #1, 13 Oct 2021
    • AC1: 'Reply on RC1', Jason Hilton, 30 Oct 2021
      • AC2: 'Reply on AC1', Jason Hilton, 30 Oct 2021
  • RC2: 'Comment on cp-2021-108', Anonymous Referee #2, 30 Oct 2021
    • AC3: 'Reply on RC2', Jason Hilton, 06 Nov 2021

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on cp-2021-108', Anonymous Referee #1, 13 Oct 2021
    • AC1: 'Reply on RC1', Jason Hilton, 30 Oct 2021
      • AC2: 'Reply on AC1', Jason Hilton, 30 Oct 2021
  • RC2: 'Comment on cp-2021-108', Anonymous Referee #2, 30 Oct 2021
    • AC3: 'Reply on RC2', Jason Hilton, 06 Nov 2021
Peixin Zhang, Jing Lu, Minfang Yang, Longyi Shao, Ziwei Wang, and Jason Hilton
Peixin Zhang, Jing Lu, Minfang Yang, Longyi Shao, Ziwei Wang, and Jason Hilton

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Short summary
Earth experienced frequent high-latitude glaciations from 360–260 million years ago but impacts on low latitude climates are poorly known. We use multiple proxies including clay mineral analysis on low latitude sediments in China to unveil past climates and correlate cool and humid climates with glacials and warm and humid climates to interglacials. Our results track high latitude glacial rhythms and show glacial cycles drove plant evolution and terrestrial environment change in low latitudes.