Peixin Zhang
Volcanically-Induced Environmental and Floral Changes Across the Triassic-Jurassic (T-J) Transition
Zhang, Peixin; Lu, Jing; Yang, Minfang; Bond, David P.G.; Greene, Sarah E.; Liu, Le; Zhang, Yuanfu; Wang, Ye; Wang, Ziwei; Li, Shan; Shao, Longyi; Hilton, Jason
Authors
Jing Lu
Minfang Yang
David Bond D.Bond@hull.ac.uk
Palaeoenvironmental Scientist and Schools Liason Officer
Sarah E. Greene
Le Liu
Yuanfu Zhang
Ye Wang
Ziwei Wang
Shan Li
Longyi Shao
Jason Hilton
Abstract
The End-Triassic Mass Extinction (ETME) saw the catastrophic loss of ca. 50% of marine genera temporally associated with emplacement of the Central Atlantic Magmatic Province (CAMP). However, the effects of the ETME on land is a controversial topic. Evaluation of the disparate cause(s) and effects of the extinction requires additional, detailed terrestrial records of these events. Here, we present a multidisciplinary record of volcanism and environmental change from an expanded Triassic-Jurassic (T-J) transition preserved in lacustrine sediments from the Jiyuan Basin, North China. High-resolution chemostratigraphy, palynological, kerogen, and sedimentological data reveal that terrestrial conditions responded to and were defined by large-scale volcanism. The record of sedimentary mercury reveals two discrete CAMP eruptive phases during the T-J transition. Each of these can be correlated with large, negative C isotope excursions (CIE-I of −4.7‰; CIE-II of −2.9‰), significantly reduced plant diversity (with ca. 45 and 44% generic losses, respectively), enhanced wildfire (marked by increased fusinite or charcoal content), and major climatic shifts toward drier and hotter conditions (indicated by the occurrence of calcareous nodules, increased Classopollis pollen content, and PCA analysis). Our results show that CAMP eruptions may have followed a bimodal eruptive model and demonstrate the powerful ability of large-scale volcanism to alter the global C cycle and profoundly affect the climate, in turn leading to enhanced wildfires and a collapse in land plant diversity during the T-J transition.
Citation
Zhang, P., Lu, J., Yang, M., Bond, D. P., Greene, S. E., Liu, L., Zhang, Y., Wang, Y., Wang, Z., Li, S., Shao, L., & Hilton, J. (2022). Volcanically-Induced Environmental and Floral Changes Across the Triassic-Jurassic (T-J) Transition. Frontiers in ecology and evolution, 10, Article 853404. https://doi.org/10.3389/fevo.2022.853404
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 24, 2022 |
Online Publication Date | Mar 28, 2022 |
Publication Date | Mar 28, 2022 |
Deposit Date | Feb 24, 2022 |
Publicly Available Date | Mar 28, 2022 |
Journal | Frontiers in Ecology and Evolution |
Electronic ISSN | 2296-701X |
Publisher | Frontiers Media |
Peer Reviewed | Peer Reviewed |
Volume | 10 |
Article Number | 853404 |
DOI | https://doi.org/10.3389/fevo.2022.853404 |
Keywords | End-Triassic mass extinction; Palynology; Volcanism; Paleoenvironment; Paleoclimate; Carbon cycle; North China |
Public URL | https://hull-repository.worktribe.com/output/3935840 |
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Copyright Statement
Copyright © 2022 Zhang, Lu, Yang, Bond, Greene, Liu, Zhang, Wang, Wang, Li, Shao and Hilton. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
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