FN Archimer Export Format
PT J
TI The role of temperature in the initiation of the end-Triassic mass extinction
BT 
AF Petryshyn, Victoria A.
   Greene, Sarah E.
   Farnsworth, Alex
   Lunt, Daniel J.
   Kelley, Anne
   Gammariello, Robert
   Ibarra, Yadira
   Bottjer, David J.
   Tripati, Aradhna
   Corsetti, Frank A.
AS 1:1,2,3;2:4;3:5,6;4:5,6;5:1;6:1;7:7;8:8;9:1,2,9;10:8;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;
C1 Department of Earth, Planetary and Space Sciences; Institute of the Environment and Sustainability, Center for Diverse Leadership in Science; University of California Los Angeles, Los Angeles, CA 90095, USA
   European Institute of Marine Sciences (IUEM), Université de Bretagne Occidentale, UMR 6538/6539, Rue Dumont D'Urville, and IFREMER, Plouzané, France
   Environmental Studies Program, University of Southern California, Los Angeles, CA 90089, USA
   School of Geography, Earth, and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
   BRIDGE, School of Geographical Sciences, University of Bristol, Bristol BS8 1SS, UK
   Cabot Institute, University of Bristol, Bristol, UK
   San Francisco State University, Department of Earth and Climate Sciences, San Francisco, CA 94132, USA
   Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, USA
   Department of Atmospheric and Oceanic Sciences, American Indian Studies Center University of California Los Angeles, Los Angeles, CA 90095, USA
   European Institute of Marine Sciences (IUEM), Université de Bretagne Occidentale, UMR 6538/6539, Rue Dumont D'Urville, and IFREMER, Plouzané, France
C2 UNIV CALIF LOS ANGELES, USA
   UBO, FRANCE
   UNIV SOUTHERN CALIF, USA
   UNIV BIRMINGHAM, UK
   UNIV BRISTOL, UK
   UNIV BRISTOL, UK
   UNIV SAN FRANCISCO STATE, USA
   UNIV SOUTHERN CALIF, USA
   UNIV CALIF LOS ANGELES, USA
   IFREMER, FRANCE
SI BREST
SE PDG-REM-GM-LCG
UM LEMAR
   LGO
IN WOS Ifremer UPR
   WOS Cotutelle UMR
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
IF 12.413
TC 8
UR https://archimer.ifremer.fr/doc/00641/75267/75477.pdf
LA English
DT Article
DE ;End-Triassic extinction;Clumped isotopes;Triassic-Jurassic boundary;Microbialite;Climate model;Paleoclimate
AB The end-Triassic mass extinction coincided with the eruption of the Central Atlantic Magmatic Province, a large igneous province responsible for the massive atmospheric input of potentially climate-altering volatile compounds that is associated with a sharp rise in atmospheric CO2. The extinction mechanism is debated, but both short-term cooling (~10s of years) related to sulfur aerosols and longer-term warming (10,000 yrs) related to CO2 emissions—essentially opposite hypotheses—are suggested triggers. Until now, no temperature records spanning this crucial interval were available to provide a baseline or to differentiate between hypothesized mechanisms. Here, we use clumped-isotope paleothermometry of shallow marine microbialites coupled with climate modeling to reconstruct ocean temperature at the extinction horizon. We find mild to warm ocean temperatures during the extinction event and evidence for repeated temperature swings of ~16 °C, which we interpret as a signature of strong seasonality. These results constitute the oldest non-biomineralized marine seasonal temperature record. We resolve no apparent evidence for short-term cooling or initial warming across the 1-80kyr of the extinction event our record captures, implying that the initial onset of the biodiversity crisis may necessitate another mechanism. 
PY 2020
PD SEP
SO Earth-science Reviews
SN 0012-8252
PU Elsevier BV
VL 208
UT 000575846300003
DI 10.1016/j.earscirev.2020.103266
ID 75267
ER

EF