title: Volcanism, mass extinction, and carbon isotope fluctuations in the Middle Permian of China.
abstract: The 260-million-year-old Emeishan volcanic province of southwest China overlies and is interbedded with Middle Permian carbonates that contain a record of the Guadalupian mass extinction. Sections in the region thus provide an opportunity to directly monitor the relative timing of extinction and volcanism within the same locations. These show that the onset of volcanism was marked by both large phreatomagmatic eruptions and extinctions amongst fusulinacean foraminifers and calcareous algae. The temporal coincidence of these two phenomena supports the idea of a cause-and-effect relationship. The crisis predates the onset of a major negative carbon isotope excursion that points to subsequent severe disturbance of the ocean-atmosphere carbon cycle.
authors.affiliation: School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK. p.wignall@see.leeds.ac.uk
authors.forename: Paul B
authors.initials: PB
authors.lastname: Wignall
authors.forename: Yadong
authors.initials: Y
authors.lastname: Sun
authors.forename: David P G
authors.initials: DP
authors.lastname: Bond
authors.forename: Gareth
authors.initials: G
authors.lastname: Izon
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Newton
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Védrine
authors.forename: Mike
authors.initials: M
authors.lastname: Widdowson
authors.forename: Jason R
authors.initials: JR
authors.lastname: Ali
authors.forename: Xulong
authors.initials: X
authors.lastname: Lai
authors.forename: Haishui
authors.initials: H
authors.lastname: Jiang
authors.forename: Helen
authors.initials: H
authors.lastname: Cope
authors.forename: Simon H
authors.initials: SH
authors.lastname: Bottrell
mesh_terms: D000818:Animals; D001272:Atmosphere; D002247:Carbon Isotopes / Q000032:analysis*; D002254:Carbonates / Q000032:analysis; D002681:China; D017753:Ecosystem; D056890:Eukaryota; D053476:Extinction, Biological; D005580:Fossils; D019015:Geologic Sediments / Q000032:analysis; D012623:Seawater; D018707:Volcanic Eruptions
chemical_list: D002247:Carbon Isotopes; D002254:Carbonates