Zhang, Shuichang;
Wang, Huajian;
Wang, Xiaomei;
Zheng, Wang;
Hao, Jihua;
von Strandmann, Philip AE Pogge;
Ye, Yuntao;
... Lyu, Yitong; + view all
(2024)
Subaerial volcanism broke mid-Proterozoic environmental stasis.
Science Advances
, 10
(13)
, Article eadk5991. 10.1126/sciadv.adk5991.
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Abstract
The mid-Proterozoic, spanning 1.8 to 0.8 billion years ago, is recognized as a phase of marine anoxia, low marine primary productivity (MPP), and constrained eukaryotic biodiversity. However, emerging evidence suggesting intermittent environmental disturbances and concurrent eukaryotic evolution challenges the notion of a stagnant Earth during this era. We present a study detailing volcanic activity and its consequential impact on terrestrial weathering and MPP, elucidated through the examination of 1.4-billion-year-old tropical offshore sediments. Our investigation, leveraging precise mercury (Hg) and lithium (Li) isotopic analyses, reveals the introduction of fresh rock substrates by local volcanism. This geological event initiated a transformative process, shifting the initial regolith-dominated condition in tropical lowland to a regime of enhanced chemical weathering and denudation efficiency. Notably, the heightened influx of nutrient-rich volcanic derivatives, especially phosphorus, spurred MPP rates and heightened organic carbon burial. These factors emerge as potential drivers in breaking the long-term static state of the mid-Proterozoic.
| Type: | Article |
|---|---|
| Title: | Subaerial volcanism broke mid-Proterozoic environmental stasis |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1126/sciadv.adk5991 |
| Publisher version: | http://dx.doi.org/10.1126/sciadv.adk5991 |
| Language: | English |
| Additional information: | Copyright © 2024 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
| Keywords: | Science & Technology, Multidisciplinary Sciences, Science & Technology - Other Topics, LARGE IGNEOUS PROVINCES, LITHIUM-ISOTOPE EVIDENCE, MERCURY ISOTOPES, BLACK SHALES, EVOLUTION, CLIMATE, OXYGEN, OCEAN, BASIN, EARTH |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10201068 |
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