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- W2120596386 abstract "Research Article| January 01, 2011 A biocalcification crisis at the Triassic-Jurassic boundary recorded in the Budva Basin (Dinarides, Montenegro) Alenka E. Črne; Alenka E. Črne † 1Ivan Rakovec Institute of Palaeontology, ZRC SAZU, Novi trg 2, SI-1000 Ljubljana, Slovenia †E-mail: acrne@zrc-sazu.si Search for other works by this author on: GSW Google Scholar Helmut Weissert; Helmut Weissert 2Geological Institute, Universitätstrasse 16, ETH-Zürich, CH-8092 Zürich, Switzerland Search for other works by this author on: GSW Google Scholar Špela Goričan; Špela Goričan 1Ivan Rakovec Institute of Palaeontology, ZRC SAZU, Novi trg 2, SI-1000 Ljubljana, Slovenia Search for other works by this author on: GSW Google Scholar Stefano M. Bernasconi Stefano M. Bernasconi 2Geological Institute, Universitätstrasse 16, ETH-Zürich, CH-8092 Zürich, Switzerland Search for other works by this author on: GSW Google Scholar Author and Article Information Alenka E. Črne † 1Ivan Rakovec Institute of Palaeontology, ZRC SAZU, Novi trg 2, SI-1000 Ljubljana, Slovenia Helmut Weissert 2Geological Institute, Universitätstrasse 16, ETH-Zürich, CH-8092 Zürich, Switzerland Špela Goričan 1Ivan Rakovec Institute of Palaeontology, ZRC SAZU, Novi trg 2, SI-1000 Ljubljana, Slovenia Stefano M. Bernasconi 2Geological Institute, Universitätstrasse 16, ETH-Zürich, CH-8092 Zürich, Switzerland †E-mail: acrne@zrc-sazu.si Publisher: Geological Society of America Received: 24 Aug 2009 Revision Received: 25 Nov 2009 Accepted: 30 Nov 2009 First Online: 08 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 2011 Geological Society of America GSA Bulletin (2011) 123 (1-2): 40–50. https://doi.org/10.1130/B30157.1 Article history Received: 24 Aug 2009 Revision Received: 25 Nov 2009 Accepted: 30 Nov 2009 First Online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Alenka E. Črne, Helmut Weissert, Špela Goričan, Stefano M. Bernasconi; A biocalcification crisis at the Triassic-Jurassic boundary recorded in the Budva Basin (Dinarides, Montenegro). GSA Bulletin 2011;; 123 (1-2): 40–50. doi: https://doi.org/10.1130/B30157.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Volcanic activity in the Central Atlantic magmatic province, resulting in an increased flux of CO2, SO2, and CH4 into the oceans and atmosphere, has been proposed as one of the mechanisms causing the biotic crisis at the Triassic-Jurassic boundary. Oceanic uptake of CO2 due to extreme greenhouse conditions should have had an impact on ocean chemistry and the position of the calcite compensation depth. In this study, we chose two pelagic sections from the Budva Basin as archives for paleoceanographic change across the Triassic-Jurassic boundary in deep-water settings. Our record represents the first documentation of a sudden termination of carbonate deposition across the Triassic-Jurassic boundary in a pelagic deep-water environment. Based on radiolarian biostratigraphy, the system boundary is placed at the sharp lithological contact between two pelagic formations, the Upper Triassic limestones and Lower Jurassic siliceous limestones alternating with shales. A rapid drop of carbonate content from 90% to less than 10% occurred contemporaneous with a negative anomaly in the stable carbon isotope record measured in both bulk carbonate (1.3‰) and bulk organic matter (1.1‰). The abrupt reduction of carbonate content in the Budva Basin was the result of either increased carbonate dissolution causing shoaling of the calcite compensation depth or reduced carbonate input due to biocalcification crisis. Both nonexclusive scenarios support the hypothesis of decreased ocean saturation with respect to calcium carbonate, which could be a direct consequence of increased CO2, SO2, and CH4 fluxes. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2120596386 title "A biocalcification crisis at the Triassic-Jurassic boundary recorded in the Budva Basin (Dinarides, Montenegro)" @default.
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