THE PERMIAN-TRIASSIC CRISIS IN THE BIOSPHERE AS MANIFESTED IN THE PALEO-PACIFIC DEEP-WATER SEQUENCES
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.
dc.contributor.author | Bragin N.Yu. | |
dc.date.accessioned | 2021-01-29T03:39:17Z | |
dc.date.available | 2021-01-29T03:39:17Z | |
dc.date.issued | 2000 | |
dc.identifier | https://elibrary.ru/item.asp?id=13358810 | |
dc.identifier.citation | Stratigraphy and Geological Correlation, 2000, 8, 3, 232-242 | |
dc.identifier.issn | 0869-5938 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/23945 | |
dc.description.abstract | The deep-water successions in Japan, Sikhote-Alin, and Nevada demonstrate a sharply decreased silica productivity across the Permian-Triassic boundary, accumulation of carbonaceous shales, and virtually absolute absence of fossil radiolarians and sponges. In Japanese sections, this stratigraphic level is enriched in titanium, phosphorus, and yttrium, and also demonstrate a sharp decline in cerium content relative to other rare-earth elements. These phenomena are directly or indirectly related to the biotic crisis at the Permian-Triassic boundary. The geochemical anomalies are interpreted as related to significant environmental changes in response to intense tectonic activity. The changes caused extinction of many marine biotic groups, including siliceous plankton, and increased the primary productivity of lower phytoplankton taxa. The event in question differs from the Mesozoic anoxic episodes in its origin, significance, and duration, being followed by the well-manifested biotic crisis. | |
dc.subject | Permian | en |
dc.subject | Triassic | en |
dc.title | THE PERMIAN-TRIASSIC CRISIS IN THE BIOSPHERE AS MANIFESTED IN THE PALEO-PACIFIC DEEP-WATER SEQUENCES | |
dc.type | Статья | |
dc.subject.age | Mesozoic::Triassic | en |
dc.subject.age | Paleozoic::Permian | en |
dc.subject.age | Мезозой::Триасовая | ru |
dc.subject.age | Палеозой::Пермская | ru |
Files in this item
This item appears in the following Collection(s)
-
ELibrary
Метаданные публикаций с сайта https://www.elibrary.ru