Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31818.1 |
Global perturbation of the marine calcium cycle during the Permian-Triassic transition | |
Silva-Tamayo, Juan Carlos1,2,3; Lau, Kimberly, V3; Jost, Adam B.4; Payne, Jonathan L.3; Wignall, Paul B.5; Newton, Robert J.5; Eisenhauer, Anton6; Depaolo, Donald J.7; Brown, Shaun7; Maher, Kate3; Lehrmann, Daniel J.8; Altiner, Demir9; Yu, Meiyi10; Richoz, Sylvain11,12; Paytan, Adina13 | |
2018-07-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN
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ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2018 |
卷号 | 130页码:1323-1338 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Colombia; England; Germany; Turkey; Peoples R China; Austria; Sweden |
英文摘要 | A negative shift in the calcium isotopic composition of marine carbonate rocks spanning the end-Permian extinction horizon in South China has been used to argue for an ocean acidification event coincident with mass extinction. This interpretation has proven controversial, both because the excursion has not been demonstrated across multiple, widely separated localities, and because modeling results of coupled carbon and calcium isotope records illustrate that calcium cycle imbalances alone cannot account for the full magnitude of the isotope excursion. Here, we further test potential controls on the Permian-Triassic calcium isotope record by measuring calcium isotope ratios from shallow-marine carbonate successions spanning the Permian-Triassic boundary in Turkey, Italy, and Oman. All measured sections display negative shifts in delta Ca-44/40 of up to 0.6 parts per thousand. Consistency in the direction, magnitude, and timing of the calcium isotope excursion across these widely separated localities implies a primary and global delta Ca-44/40 signature. Based on the results of a coupled box model of the geological carbon and calcium cycles, we interpret the excursion to reflect a series of consequences arising from volcanic CO2 release, including a temporary decrease in seawater delta Ca-44/40 due to short-lived ocean acidification and a more protracted increase in calcium isotope fractionation associated with a shift toward more primary aragonite in the sediment and, potentially, subsequently elevated carbonate saturation states caused by the persistence of elevated CO2 delivery from volcanism. Locally, changing balances between aragonite and calcite production are sufficient to account for the calcium isotope excursions, but this effect alone does not explain the globally observed negative excursion in the delta C-13 values of carbonate sediments and organic matter as well. Only a carbon release event and related geochemical consequences are consistent both with calcium and carbon isotope data. The carbon release scenario can also account for oxygen isotope evidence for dramatic and protracted global warming as well as paleontological evidence for the preferential extinction of marine animals most susceptible to acidification, warming, and anoxia. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437009200017 |
WOS关键词 | ISOTOPE FRACTIONATION ; MASS EXTINCTION ; GREAT BANK ; OCEAN ACIDIFICATION ; FACIES ARCHITECTURE ; BOUNDARY INTERVAL ; NANPANJIANG BASIN ; GUIZHOU PROVINCE ; CENTRAL TAURIDES ; SOUTH CHINA |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24697 |
专题 | 地球科学 |
作者单位 | 1.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77004 USA; 2.Testlab Geoambiental, Cra 45D 60-16, Medellin, Antioquia, Colombia; 3.Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA; 4.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA; 5.Univ Leeds, Dept Earth & Environm Sci, Leeds LS2 9JT, W Yorkshire, England; 6.GEOMAR Kiel, Helmholtz Ctr Ocean Res, D-94148 Kiel, Germany; 7.Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA; 8.Trinity Univ, Dept Geosci, San Antonio, TX 78212 USA; 9.Middle East Tech Univ, Dept Geol Engn, TR-06800 Ankara, Cankaya, Turkey; 10.Guizhou Univ, Coll Resource & Environm Engn, Guiyang 550003, Guizhou, Peoples R China; 11.Karl Franzens Univ Graz, Bereich Geol & Palaontol, Inst Erdwissensch, A-8010 Graz, Austria; 12.Lund Univ, Dept Geol, S-22362 Lund, Sweden; 13.Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA |
推荐引用方式 GB/T 7714 | Silva-Tamayo, Juan Carlos,Lau, Kimberly, V,Jost, Adam B.,et al. Global perturbation of the marine calcium cycle during the Permian-Triassic transition[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2018,130:1323-1338. |
APA | Silva-Tamayo, Juan Carlos.,Lau, Kimberly, V.,Jost, Adam B..,Payne, Jonathan L..,Wignall, Paul B..,...&Paytan, Adina.(2018).Global perturbation of the marine calcium cycle during the Permian-Triassic transition.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,130,1323-1338. |
MLA | Silva-Tamayo, Juan Carlos,et al."Global perturbation of the marine calcium cycle during the Permian-Triassic transition".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 130(2018):1323-1338. |
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