End-Permian catastrophe by a bolide impact: Eviden
- journal_title：Geology
- Contributor：Kunio Kaiho ; Yoshimichi Kajiwara ; Takanori Nakano ; Yasunori Miura ; Hodaka Kawahata ; Kazue Tazaki ; Masato Ueshima ; Zhongqiang Chen ; Guang R. Shi
- Publisher：Geological Society of America
- Date：2001-
- Format：text/html
- Language：en
- Identifier：10.1130/0091-7613(2001)029<0815:EPCBAB>2.0.CO;2
- journal_abbrev：Geology
- issn：0091-7613
- volume：29
- issue：9
- firstpage：815
摘要
Our studies in southern China have revealed a remarkable sulfur and strontium isotope excursion at the end of the Permian, along with a coincident concentration of impact- metamorphosed grains and kaolinite and a significant decrease in manganese, phosphorous, calcium, and microfossils (foraminifera). These data suggest that an asteroid or a comet hit the ocean at the end of Permian time and caused a rapid and massive release of sulfur from the mantle to the ocean-atmosphere system, leading to significant oxygen consumption, acid rain, and the most severe biotic crisis in the history of life on Earth.