Permian–Triassic extinction event - Wikipedia
In the North China Basin, highly arid climatic conditions are recorded during the latest Permian, near the Permian-Triassic boundary, with a swing towards increased precipitation during the Early Triassic, the latter likely assisting biotic recovery following the mass extinction.
Permian-Triassic Boundary - an overview | ScienceDirect Topics
The Permian—Triassic (P/T) boundary is regarded as the most important biotic crisis to have affected global affect biotas, caused by a series of ecological disruptions, at least partly triggered by massive flood basalt eruptions in Siberia.
Environmental crises at the Permian–Triassic mass extinction
2022年2月22日 · At the Permian–Triassic boundary (252 million years ago), a series of environmental crises triggered by the Siberian Traps eruptions caused the extinction of 81–94% of marine species and 70% ...
Triassic Period - Permian Extinction, Climate Change, Fossils
2024年12月5日 · At the Permian-Triassic boundary the number of families was reduced by half, with an estimated 85 to 95 percent of all species disappearing. Ammonoids were common in the Permian but suffered drastic reduction at the end of that period.
Triassic Period - Establishing Boundaries | Britannica
2024年12月5日 · The Permian-Triassic boundary. The exact position of both the Permian-Triassic and Triassic-Jurassic boundaries has been the subject of great controversy for many years.
Impact Event at the Permian-Triassic Boundary: Evidence from
The Permian-Triassic boundary (PTB) event, which occurred about 251.4 million years ago, is marked by the most severe mass extinction in the geologic record. Recent studies of some PTB sites indicate that the extinctions occurred very abruptly, consistent with a catastrophic, possibly extraterrestrial, cause.
Permian Period - Triassic, Carboniferous, Extinction | Britannica
2024年11月25日 · Permian-Triassic boundary Except for the central and eastern parts of the Tethys region, where local deposition was apparently continuous, the boundary between the Permian System and the overlying Triassic System is a hiatus of one to several million years.
Pattern of Marine Mass Extinction Near the Permian-Triassic Boundary in ...
2000年7月21日 · The Meishan section across the Permian-Triassic boundary in South China is the most thoroughly investigated in the world. A statistical analysis of the occurrences of 162 genera and 333 species confirms a sudden extinction event at 251.4 million years ago, coincident with a dramatic depletion of δ 13 C carbonate and an increase in microspherules.
Sedimentology - Wiley Online Library
2025年1月9日 · The strata encompassing the Permian–Triassic boundary interval capture a pivotal period in Earth's history, with significant changes in Phanerozoic Earth system dynamics, culminating in a severe mass extinction. In carbonate platforms, this boundary is marked by a shift from skeletal to microbial carbonate production.
The Permian-Triassic Boundary: GSSP - Carleton University
The Permian-Triassic Boundary: GSSP Precise evidence of the boundary between the Permian and Triassic is greatly obscured; a relatively low distribution of rocks from this period coupled with several orogenic cycles combine to limit the available rock record.
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