Chemostratigraphy Across the Triassic–Jurassic Boundary
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Chemostratigraphy Across the Triassic–Jurassic Boundary. / Korte, Christoph; Ruhl, Micha; Pálfy, József; Ullmann, Clemens Vinzenz; Hesselbo, Stephen Peter.
Geophysical Monograph Series. John Wiley and Sons, Inc., 2018. p. 185-210 (Geophysical Monograph Series, Vol. 240).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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TY - CHAP
T1 - Chemostratigraphy Across the Triassic–Jurassic Boundary
AU - Korte, Christoph
AU - Ruhl, Micha
AU - Pálfy, József
AU - Ullmann, Clemens Vinzenz
AU - Hesselbo, Stephen Peter
N1 - Funding Information: We thank two anonymous reviewers for providing critical comments that helped to improve the quality of this review. This publication is MTA-MTM-ELTE Paleo contribution no. 259. Publisher Copyright: © 2019 the American Geophysical Union. Published 2019 by John Wiley & Sons, Inc.
PY - 2018
Y1 - 2018
N2 - The Triassic-Jurassic transition (~201.5Ma) is marked by one of the largest mass extinctions in Earth’s history. This was accompanied by significant perturbations in ocean and atmosphere geochemistry, including the global carbon cycle, as expressed by major fluctuations in carbon isotope ratios. Central Atlantic Magmatic Province (CAMP) volcanism triggered environmental changes and played a key role in this biotic crisis. Biostratigraphic and chronostratigraphic studies link the end-Triassic mass extinction with the early phases of CAMP volcanism, and notable mercury enrichments in geographically distributed marine and continental strata are shown to be coeval with the onset of the extrusive emplacement of CAMP. Sulfuric acid induced atmospheric aerosol clouds from subaerial CAMP volcanism can explain a brief, relatively cool seawater temperature pulse in the mid-paleolatitude Pan-European seaway across the T–J transition. The occurrence of CAMP-induced carbon degassing may explain the overall long-term shift toward much warmer conditions. The effect of CAMP volcanism on seawater87Sr/86Sr values might have been indirect by driving enhanced continental weathering intensity. Changes in ocean-atmosphere geochemistry and associated (causative) effects on paleoclimatic, paleoenvironmental, and paleoceanographic conditions on local, regional, and global scales are however not yet fully constrained.
AB - The Triassic-Jurassic transition (~201.5Ma) is marked by one of the largest mass extinctions in Earth’s history. This was accompanied by significant perturbations in ocean and atmosphere geochemistry, including the global carbon cycle, as expressed by major fluctuations in carbon isotope ratios. Central Atlantic Magmatic Province (CAMP) volcanism triggered environmental changes and played a key role in this biotic crisis. Biostratigraphic and chronostratigraphic studies link the end-Triassic mass extinction with the early phases of CAMP volcanism, and notable mercury enrichments in geographically distributed marine and continental strata are shown to be coeval with the onset of the extrusive emplacement of CAMP. Sulfuric acid induced atmospheric aerosol clouds from subaerial CAMP volcanism can explain a brief, relatively cool seawater temperature pulse in the mid-paleolatitude Pan-European seaway across the T–J transition. The occurrence of CAMP-induced carbon degassing may explain the overall long-term shift toward much warmer conditions. The effect of CAMP volcanism on seawater87Sr/86Sr values might have been indirect by driving enhanced continental weathering intensity. Changes in ocean-atmosphere geochemistry and associated (causative) effects on paleoclimatic, paleoenvironmental, and paleoceanographic conditions on local, regional, and global scales are however not yet fully constrained.
UR - http://www.scopus.com/inward/record.url?scp=85135459259&partnerID=8YFLogxK
U2 - 10.1002/9781119382508.ch10
DO - 10.1002/9781119382508.ch10
M3 - Book chapter
AN - SCOPUS:85135459259
T3 - Geophysical Monograph Series
SP - 185
EP - 210
BT - Geophysical Monograph Series
PB - John Wiley and Sons, Inc.
ER -
ID: 355782132