The Permian Extinction and the Tethys PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download The Permian Extinction and the Tethys PDF full book. Access full book title The Permian Extinction and the Tethys by A. M. Celâl ?engör. Download full books in PDF and EPUB format.
Author: A. M. Celâl ?engör
Publisher: Geological Society of America
ISBN: 0813724481
Category : Science
Languages : en
Pages : 110
Get Book Here
Book Description
The extinction that wiped out 95% of the living species at the end of the Paleozoic era can be explained by the fact that when it happened, all landmasses were one continent, Pangea, with an inner ocean, the Paleo-Tethys. This ocean included the richest n
Author: A. M. Celâl ?engör
Publisher: Geological Society of America
ISBN: 0813724481
Category : Science
Languages : en
Pages : 110
Get Book Here
Book Description
The extinction that wiped out 95% of the living species at the end of the Paleozoic era can be explained by the fact that when it happened, all landmasses were one continent, Pangea, with an inner ocean, the Paleo-Tethys. This ocean included the richest n
Author: Yin Yin Hongfu
Publisher: Elsevier
ISBN: 0080538657
Category : Science
Languages : en
Pages : 413
Get Book Here
Book Description
Permian and Triassic are the interval known for the integration and separation of Pangea, the closure of the Palaeotethys and the opening of Mesotethys. They were associated with a series of worldwide events including the Late Palaeozoic glaciation and succeeding extensive evaporatic and reef formations, the end-Palaeozoic regression, strong orogenies and widespread volcanism and magmatism, and finally, the Permo-Triassic biotic macro-extinction. These events resulted in the formation of enormous reserves of coal, petroleum, evaporites, phosphorites and metal resources. The Permian and Triassic thus constitutes a time interval particularly important both for understanding the Earth's history and for exploration of mineral resources.The book aims to reconstruct the Permian-Triassic history of Pangea, Palaeo-Tethys and Palaeo-Pacific through stratigraphic, palaeogeographic and other interdisciplinary approaches. It consists of two parts. Part 1 deals with regional stratigraphy of Tethyan and western Circum-Pacific countries which is the basis for interregional correlation, and palaeogeography. Part 2 deals with the biotic evolution at the Permian-Triassic transition, focusing on the major invertebrate groups: foraminifers, radiolarians, brachiopods, ammonoids and conodonts.
Author: Walter C. Sweet
Publisher: Cambridge University Press
ISBN: 9780521545730
Category : Science
Languages : en
Pages : 200
Get Book Here
Book Description
This book describes and interprets Upper Permian and Lower Triassic rocks and their fossils in the region of the eastern Tethys, bringing together information gathered in the International Geological Correlation Programme Project 203.
Author:
Publisher:
ISBN: 9780813724485
Category : Anoxic zones
Languages : en
Pages : 96
Get Book Here
Book Description
The extinction that wiped out 95% of the living species at the end of the Paleozoic era can be explained by the fact that when it happened, all landmasses were one continent, Pangea, with an inner ocean, the Paleo-Tethys. This ocean included the richest niches in the late Permian world and the extinctions occurred within and around it. Data from the rest of the world indicate that the extinction happened there only where it was polluted by Paleo-Tethyan spills. This book documents this history and shows that the Permian extinction was due to the global geography of the time.
Author: Nilotpal Ghosh
Publisher:
ISBN:
Category :
Languages : en
Pages : 127
Get Book Here
Book Description
"Interpreting global consequences of the Permian-Triassic (P-Tr) extinction event at ~252 million years (Ma) before present requires geological examination across paleogeographic sites of Pangaea, including Panthalassic Ocean, Paleotethys, Neotethys, Laurasia and Gondwanaland. Despite numerous studies on Tethyan and Boreal sediments extending from China and Europe to Canada, Neo-Tethyan sediments spanning this geological boundary have received much lesser attention. This thesis provides a detailed geological, geochemical and isotopic characterization of the P-Tr boundary in Spiti Valley of India that is a remnant of the peri-Gondwana continental shelf along Neo-Tethys Ocean. New sedimentological observations and high-resolution trace element and carbon, oxygen, lead isotope data across the P-Tr boundary in Spiti are reported and documented for the first time. Discovery of framboidal pyrites, fossil assemblages and laminated lithology of the Late Permian shales indicate deeper anoxic depositional environment while carbon isotope excursions in Atargu and Guling outcrops, respectively, identify the P-Tr transition across a clayey, partly gypsiferous ferruginous layer. Sedimentological similarities of this layer to other Neo-Tethyan sections from Transcaucasia and Iran indicate subaqueous oxidation of shallow marine sediments on a regional scale. Light Rare Earth Element - enriched Late Permian shales with Ce - Eu anomalies reflect their source as Panjal Trap basalt (ca. 289 Ma) of Kashmir while Nb-Ta and Zr-Hf anomalies at and above the P-Tr boundary indicate increased erosion in oxidizing conditions. The [delta]13Corg, trace element and Pb isotope record from Spiti indicate catastrophic changes in sediment sources and facies, with effects on global carbon cycle and are consistent with an abrupt episode of marine regression and erosional forcing, also observed elsewhere along northern Gondwanaland. In contrast, the Raman spectroscopic and lead isotope investigation of a P-Tr boundary Tethyan section in Vietnam shows large scale deposition of black carbon soot into the Paleo-Tethys, a likely cause of marine anoxia. We propose that a chain of catastrophic processes, primarily triggered by Siberian flood volcanic eruption and bolide impact in the Parana basin of Brazil and possibly elsewhere, in combination, left catastrophic local to regional imprints on sea level, climate, marine anoxia and tectonic instability that connected the P-Tr crisis across the terrestrial and marine realms of Pangaea"--Page vii-viii.
Author: Douglas H. Erwin
Publisher: Columbia University Press
ISBN: 0231074670
Category : Computers
Languages : en
Pages : 342
Get Book Here
Book Description
Carefully examines the events recorded at the major Permo-Triassic boundary sections and documents the patterns of extinction and survival among the major groups of marine and terrestrial plants and animals. Erwin also provides a detailed summary of the climatic, geologic, geophysical and geochemical events of the Late Permian and Early Triassic.
Author: Dorrik Stow
Publisher: Oxford University Press
ISBN: 0199214298
Category : Science
Languages : en
Pages : 313
Get Book Here
Book Description
Once, the ocean of Tethys stretched across the world. It vanished just before Man appeared on Earth. Dorrik Stow tells of the powerful forces that created and destroyed a great ocean, its marine life, its extinctions, its impact on climate, and the many clues by which scientists have put together its story, stretching back 250 million years.
Author: Peter A. Scholle
Publisher: Springer Science & Business Media
ISBN: 364278593X
Category : Science
Languages : en
Pages : 263
Get Book Here
Book Description
The Permian was a remarkable time period. It represents the maximum stage of Pangean continental assembly, includes a major global climatic shift from glacial to nonglacial conditions (icehouse-greenhouse transition), and is ter minated by one of the most profound faunal/floral extinction events in the Earth's history. In addition, Permian oceans, although poorly understood, must have had some quite unique characteristics. Permian seas reached the most extreme values of carbon, sulfur, and strontium isotopic ratios ever achieved in Phanerozoic time, and the isotopic ratios of all three elements abruptly returned to more "normal" values at, or very close to, the Permo Triassic boundary. Finally, the Permian is marked by an abundance of important sedimentary mineral resources. It has large fossil fuel concentra tions (coal, oil, and natural gas), enormous phosphate reserves, and very extensive evaporite deposits, including gypsum, anhydrite, and halite, as well as a variety of potash salts. Study of the Permian has been hampered, however, by a number of factors. These include a scattered geologic literature (presented in a variety of languages), a confusing regional and global stratigraphic framework (based, in part, on inadequate type sections), and largely provincial, often poorly correlatable faunas. All have contributed to the sparsity and inadequacy of overviews of this critical geological interval. The two volumes attempts to bring together some of the widely scattered observations about these fascinating rocks, at least for the northern (pre dominantly nonglacial) parts of Pangea.
Author: Field Conference On: Permian and Permian-Triassic Boundary in the South-Alpine Segment of the Western Tethys. and additional regional reports
Publisher:
ISBN:
Category :
Languages : en
Pages : 366
Get Book Here
Book Description
Author: Trond H. Torsvik
Publisher: Cambridge University Press
ISBN: 1107105323
Category : Science
Languages : en
Pages : 329
Get Book Here
Book Description
This book provides a complete Phanerozoic story of palaeogeography, using new and detailed full-colour maps, to link surface and deep-Earth processes.
