Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B35281.1 |
The Capitanian (Guadalupian, Middle Permian) mass extinction in NW Pangea (Borup Fiord, Arctic Canada): A global crisis driven by volcanism and anoxia | |
Bond, David P. G.1; Wignall, Paul B.2; Grasby, Stephen E.3,4 | |
2020-05-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2020 |
卷号 | 132期号:5-6页码:931-942 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Canada |
英文摘要 | Until recently, the biotic crisis that occurred within the Capitanian Stage (Middle Permian, ca. 262 Ma) was known only from equatorial (Tethyan) latitudes, and its global extent was poorly resolved. The discovery of a Boreal Capitanian crisis in Spitsbergen, with losses of similar magnitude to those in low latitudes, indicated that the event was geographically widespread, but further non-Tethyan records are needed to confirm this as a true mass extinction. The cause of this crisis is similarly controversial: While the temporal coincidence of the extinction and the onset of volcanism in the Emeishan large igneous province in China provides a clear link between those phenomena, the proximal kill mechanism is unclear. Here, we present an integrated fossil, pyrite framboid, and geo-chemical study of the Middle to Late Permian section of the Sverdrup Basin at Borup Fiord, Ellesmere Island, Arctic Canada. As in Spitsbergen, the Capitanian extinction is recorded by brachiopods in a chert/limestone succession 30-40 m below the Permian-Triassic boundary. The extinction level shows elevated concentrations of redox-sensitive trace metals (Mo, V, U, Mn), and contemporary pyrite framboid populations are dominated by small individuals, suggestive of a causal role for anoxia in the wider Boreal crisis. Mercury concentrations-a proxy for volcanism-are generally low throughout the succession but are elevated at the extinction level, and this spike withstands normalization to total organic carbon, total sulfur, and aluminum. We suggest this is the smoking gun of eruptions in the distant Emeishan large igneous province, which drove high-latitude anoxia via global warming. Although the global Capitanian extinction might have had different regional mechanisms, like the more famous extinction at the end of the Permian, each had its roots in large igneous province volcanism. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000530917400003 |
WOS关键词 | LARGE IGNEOUS PROVINCES ; CARBON-ISOTOPE RECORD ; SEA-LEVEL CHANGE ; SVERDRUP BASIN ; TRIASSIC TRANSITION ; BOUNDARY SECTIONS ; DECCAN VOLCANISM ; SOUTH CHINA ; MERCURY ; END |
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/279469 |
专题 | 地球科学 |
作者单位 | 1.Univ Hull, Dept Geog Geol & Environm, Kingston Upon Hull HU6 7RX, N Humberside, England; 2.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England; 3.Geol Survey Canada, 3303 33Rd St Nw, Calgary, AB T2L 2A7, Canada; 4.Univ Calgaiy, Dept Geosci, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada |
推荐引用方式 GB/T 7714 | Bond, David P. G.,Wignall, Paul B.,Grasby, Stephen E.. The Capitanian (Guadalupian, Middle Permian) mass extinction in NW Pangea (Borup Fiord, Arctic Canada): A global crisis driven by volcanism and anoxia[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2020,132(5-6):931-942. |
APA | Bond, David P. G.,Wignall, Paul B.,&Grasby, Stephen E..(2020).The Capitanian (Guadalupian, Middle Permian) mass extinction in NW Pangea (Borup Fiord, Arctic Canada): A global crisis driven by volcanism and anoxia.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,132(5-6),931-942. |
MLA | Bond, David P. G.,et al."The Capitanian (Guadalupian, Middle Permian) mass extinction in NW Pangea (Borup Fiord, Arctic Canada): A global crisis driven by volcanism and anoxia".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 132.5-6(2020):931-942. |
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