Your browser doesn't support javascript.
loading
Climate-forced Hg-remobilization associated with fern mutagenesis in the aftermath of the end-Triassic extinction.
Bos, Remco; Zheng, Wang; Lindström, Sofie; Sanei, Hamed; Waajen, Irene; Fendley, Isabel M; Mather, Tamsin A; Wang, Yang; Rohovec, Jan; Navrátil, Tomás; Sluijs, Appy; van de Schootbrugge, Bas.
Afiliación
  • Bos R; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Princetonlaan 8, 3584, CB, Utrecht, The Netherlands. r.bos@uu.nl.
  • Zheng W; Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, 300072, Tianjin, China. zhengw3@tju.edu.cn.
  • Lindström S; Department of Geosciences and Natural Resource Management, Copenhagen University, Øster Voldgade 10, DK-1350, Copenhagen K, Denmark.
  • Sanei H; Lithospheric Organic Carbon (LOC) Group, Department of Geoscience, Aarhus University, Høegh-Guldbergs gade 2, 8000C, Aarhus, Denmark.
  • Waajen I; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Princetonlaan 8, 3584, CB, Utrecht, The Netherlands.
  • Fendley IM; Department of Earth Sciences, University of Oxford, Parks Road, Oxford, OX1 3PR, UK.
  • Mather TA; Department of Geosciences, Pennsylvania State University, University Park, PA, 16802, USA.
  • Wang Y; Department of Earth Sciences, University of Oxford, Parks Road, Oxford, OX1 3PR, UK.
  • Rohovec J; Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, 300072, Tianjin, China.
  • Navrátil T; Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, Prague, 6 165 00, Czech Republic.
  • Sluijs A; Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, Prague, 6 165 00, Czech Republic.
  • van de Schootbrugge B; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Princetonlaan 8, 3584, CB, Utrecht, The Netherlands.
Nat Commun ; 15(1): 3596, 2024 Apr 27.
Article en En | MEDLINE | ID: mdl-38678037
ABSTRACT
The long-term effects of the Central Atlantic Magmatic Province, a large igneous province connected to the end-Triassic mass-extinction (201.5 Ma), remain largely elusive. Here, we document the persistence of volcanic-induced mercury (Hg) pollution and its effects on the biosphere for ~1.3 million years after the extinction event. In sediments recovered in Germany (Schandelah-1 core), we record not only high abundances of malformed fern spores at the Triassic-Jurassic boundary, but also during the lower Jurassic Hettangian, indicating repeated vegetation disturbance and stress that was eccentricity-forced. Crucially, these abundances correspond to increases in sedimentary Hg-concentrations. Hg-isotope ratios (δ202Hg, Δ199Hg) suggest a volcanic source of Hg-enrichment at the Triassic-Jurassic boundary but a terrestrial source for the early Jurassic peaks. We conclude that volcanically injected Hg across the extinction was repeatedly remobilized from coastal wetlands and hinterland areas during eccentricity-forced phases of severe hydrological upheaval and erosion, focusing Hg-pollution in the Central European Basin.
Asunto(s)
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Sedimentos Geológicos / Helechos / Extinción Biológica / Fósiles / Mercurio País/Región como asunto: Europa Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: Países Bajos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Sedimentos Geológicos / Helechos / Extinción Biológica / Fósiles / Mercurio País/Región como asunto: Europa Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: Países Bajos Pais de publicación: Reino Unido