scispace - formally typeset
Search or ask a question
Topic

Permian

About: Permian is a research topic. Over the lifetime, 12457 publications have been published within this topic receiving 289458 citations. The topic is also known as: Permian period.


Papers
More filters
Journal ArticleDOI
19 Mar 1982-Science
TL;DR: A new compilation of fossil data on invertebrate and vertebrate families indicates that four mass extinctions in the marine realm are statistically distinct from background extinction levels.
Abstract: A new compilation of fossil data on invertebrate and vertebrate families indicates that four mass extinctions in the marine realm are statistically distinct from background extinction levels. These four occurred late in the Ordovician, Permian, Triassic, and Cretaceous periods. A fifth extinction event in the Devonian stands out from the background but is not statistically significant in these data. Background extinction rates appear to have declined since Cambrian time, which is consistent with the prediction that optimization of fitness should increase through evolutionary time.

1,412 citations

Journal ArticleDOI
03 Oct 2008-Science
TL;DR: A history of sea-level fluctuations for the entire Paleozoic by using stratigraphic sections from pericratonic and cratonic basins is reconstructed, revealing a gradual rise through the Cambrian and a short-lived but prominent withdrawal in response to Hirnantian glaciation.
Abstract: Sea levels have been determined for most of the Paleozoic Era (542 to 251 million years ago), but an integrated history of sea levels has remained unrealized. We reconstructed a history of sea-level fluctuations for the entire Paleozoic by using stratigraphic sections from pericratonic and cratonic basins. Evaluation of the timing and amplitude of individual sea-level events reveals that the magnitude of change is the most problematic to estimate accurately. The long-term sea level shows a gradual rise through the Cambrian, reaching a zenith in the Late Ordovician, then a short-lived but prominent withdrawal in response to Hirnantian glaciation. Subsequent but decreasingly substantial eustatic highs occurred in the mid-Silurian, near the Middle/Late Devonian boundary, and in the latest Carboniferous. Eustatic lows are recorded in the early Devonian, near the Mississippian/Pennsylvanian boundary, and in the Late Permian. One hundred and seventy-two eustatic events are documented for the Paleozoic, varying in magnitude from a few tens of meters to ∼125 meters.

1,227 citations

Book
01 Sep 2008
TL;DR: For a detailed discussion of the international divisions of geologic time, see as discussed by the authors, where the authors present the standard colors for the international division of geology time scales in detail.
Abstract: Introduction Planetary time scale Precambrian period Cambrian period Ordovician period Silurian period Devonian period Carboniferous period Permian period Triassic period Jurassic period Cretaceous period Paleogene period Neogene period Quaternary period Appendix Standard colors of the international divisions of geologic time References Index

1,155 citations

Journal ArticleDOI
24 May 1996-Science
TL;DR: Data on rocks from Spitsbergen and the equatorial sections of Italy and Slovenia indicate that the world's oceans became anoxic at both low and high paleolatitudes in the Late Permian, which may have been responsible for the mass extinction at this time.
Abstract: Data on rocks from Spitsbergen and the equatorial sections of Italy and Slovenia indicate that the world's oceans became anoxic at both low and high paleolatitudes in the Late Permian. Such conditions may have been responsible for the mass extinction at this time. This event affected a wide range of shelf depths and extended into shallow water well above the storm wave base.

966 citations

BookDOI
01 Jan 1974
TL;DR: The Tethys: An Ocean Broken by Seuils Lithospherique (B.J. Jaillard et al., this article ) is an ocean broken by seuils in the Tethyan Ocean, and the role of tethys in the evolution of the Northern Andes between Late Permian and Late Eocene times.
Abstract: Kinematic Section: The Plate Tectonic History of the Past Tethys Ocean (L.E. Ricou). Apparent Polar Wandering Paths for North America, Europe, Africa, Laurussia, and West Gondwana Since the Upper Carboniferous: A Review (J. Besse et al.). New Geologic Data: Late Carboniferous to Recent Geodynamic Evolution of the West Gondwanian Cratonic Tethyan Margins (R. Guiraud, Y. Bellion). Crustalscale, Thrust Complex in the Rhodope Massif: Evidence from Structures and Fabrics (J.P. Burg et al.). Paleogeographic Reconstructions: Late Permian to Late Triassic Tethyan Paleoenvironments (J. Marcoux, A. Baud). Synthetic View: Tethyan Carbonate Platforms (J. Philip et al.). Radiolarians and Tethyan Radiolarites from Primary Production to Their Paleogeography (P. De Wever et al.). Paleoenvironments and Organicrich Facies Deposition in the Tethyan Realm: Toarcian, Kimmeridgian and Cenomanian Time Intervals (F. Baudin, J.P. Herbin). Geodynamics of Bauxites in the Tethyan Realm (P.J. Combes, G. Bardossy). Tethyan Phosphates and Bioproductites (J. Lucas, L. PrevotLucas). From Tethys to Panthalassa: The Role of Tethys in the Evolution of the Northern Andes between Late Permian and Late Eocene Times (E. Jaillard et al.). Conclusions: The Tethys: An Ocean Broken by Seuils Lithospherique (B. Vrielynck et al.). 4 additional articles. Index.

938 citations


Network Information
Related Topics (5)
Sedimentary rock
30.3K papers, 746.5K citations
92% related
Volcanic rock
19.5K papers, 610.1K citations
89% related
Metamorphism
18.3K papers, 655.8K citations
88% related
Rift
15.3K papers, 556.4K citations
87% related
Craton
12.7K papers, 563K citations
86% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023433
2022971
2021440
2020387
2019348
2018346