Biological diversification linked to environmental stabilization following the Sturtian Snowball glaciation.

Autor: Bowyer FT; School of GeoSciences, University of Edinburgh, James Hutton Road, Edinburgh EH9 3FE, UK.; School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK., Krause AJ; School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK.; Department of Earth Sciences, University College London, London WC1E 6BT, UK., Song Y; School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK., Huang KJ; Department of Geology, Northwest University, 229 North Taibai Road, Xi'an 710069, Shaanxi Province, China., Fu Y; College of Resource and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China., Shen B; Ministry of Education Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing 100871, China., Li J; MNR Key Laboratory of Isotope Geology, MNR Key Laboratory of Deep-Earth Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China., Zhu XK; MNR Key Laboratory of Isotope Geology, MNR Key Laboratory of Deep-Earth Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China., Kipp MA; Division of Geological and Planetary Sciences, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA., van Maldegem LM; Research School of Earth Sciences, The Australian National University, Canberra, ACT 2601, Australia., Brocks JJ; Research School of Earth Sciences, The Australian National University, Canberra, ACT 2601, Australia., Shields GA; Department of Earth Sciences, University College London, London WC1E 6BT, UK., Le Hir G; Université Paris, Institut de Physique du Globe de Paris, CNRS, 1 rue Jussieu, 75005 Paris, France., Mills BJW; School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK., Poulton SW; School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK.
Jazyk: angličtina
Zdroj: Science advances [Sci Adv] 2023 Aug 25; Vol. 9 (34), pp. eadf9999. Date of Electronic Publication: 2023 Aug 25.
DOI: 10.1126/sciadv.adf9999
Abstrakt: The body fossil and biomarker records hint at an increase in biotic complexity between the two Cryogenian Snowball Earth episodes (ca. 661 million to ≤650 million years ago). Oxygen and nutrient availability can promote biotic complexity, but nutrient (particularly phosphorus) and redox dynamics across this interval remain poorly understood. Here, we present high-resolution paleoredox and phosphorus phase association data from multiple globally distributed drill core records through the non-glacial interval. These data are first correlated regionally by litho- and chemostratigraphy, and then calibrated within a series of global chronostratigraphic frameworks. The combined data show that regional differences in postglacial redox stabilization were partly controlled by the intensity of phosphorus recycling from marine sediments. The apparent increase in biotic complexity followed a global transition to more stable and less reducing conditions in shallow to mid-depth marine environments and occurred within a tolerable climatic window during progressive cooling after post-Snowball super-greenhouse conditions.
Databáze: MEDLINE