http://repositorio.unb.br/handle/10482/20269
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ARTIGO_InPursuitCausesGreatest.pdf | 1,17 MB | Adobe PDF | View/Open |
Title: | In pursuit of causes for the greatest mass extinction : the Permo-Triassic Boundary in the Southern Hemisphere - part II : investigating 260 million years old, meteorite-impacted sedimentary rocks in central-west Brazil |
Other Titles: | Auf der Suche nach Ursachen für das grösste Massenaussterbe-Ereignis : die Perm-Trias-Grenze der Südhemisphäre – Teil II : erforschung 260 Millionen Jahre alter Meteoriteneinschlag-verformter Sedimentgesteine im zentralen Westbrasilien |
Authors: | Mutter, Raoul Josua Tomassi, Henrique Zimmermann Carmo, Dermeval Aparecido do |
Assunto:: | Peixes fósseis Geoquímica Paleontologia Meteoritos |
Issue Date: | 2008 |
Citation: | MUTTER, Raoul J.; TOMASSI, Henrique Z.; CARMO, Dermeval Aparecido do. In pursuit of causes for the greatest mass extinction: the Permo-Triassic Boundary in the Southern Hemisphere - part II: investigating 260 million years old, meteorite-impacted sedimentary rocks in central-west Brazil. Vierteljahrsschrift der Naturforschenden Gesellschaft in Zürich, Zürich, v. 153, p. 81-91, 2008. Disponível em: <http://www.ngzh.ch/archiv/2008_153/153_3-4/153_21.pdf>. Acesso em: 13 maio 2016. |
Abstract: | Various catastrophic and/or episodic events have been suggested to have caused the end-Permian mass extinction close to the Permo-Triassic Boundary (PTB). The theories and extinction-scenarios are however predominantly based on the sedimentary rock record and fossil record of the Northern Hemisphere – the Southern Hemisphere and in particular the fossil fish record worldwide being least well explored. In this second of four contributions we briefly present a little-known meteorite-impact crater relatively close to the PTB on the border of the States of Goiás and Mato Grosso in central west-Brazil. We discuss the occurrence of neighbouring Permian sedimentary rocks, a selection of accessible outcrops, fossil content and their potential to contribute to the discussion around the end-Permian extinction event. _______________________________________________________________________________________________ ABSTRAKT Verschiedene katastrophenhafte und/oder episodische Ereignisse sind als Ursachen für das Massenaussterbe- Ereignis am Ende des Perms in der Nähe der Perm-Trias-Grenze (PTB) vorgeschlagen worden. Die Theorien und Aussterbe-Szenarien gründen allerdings mehrheitlich auf dem Sedimentgestein- und Fossilbeleg der Nordhemisphäre, während die Südhemisphäre und speziell der fossile Fisch-Beleg weltweit am wenigsten gründlich erforscht sind. In diesem zweiten von vier Beiträgen stellen wir einen wenig bekannten Meteoriten-Einschlagkrater relativ nahe der PTB an der Grenze der Staaten Goiás und Mato Grosso im zentralen West-Brasilien vor. Wir diskutieren das Auftreten benachbarter permischer Sedimentgesteine, eine Auswahl zugänglicher Aufschlüsse, Fossilinhalte und ihr Potential zur Diskussion um das Aussterbe-Ereignis am Ende des Perms beizutragen. |
Licença:: | Autorização concedida ao Repositório Institucional da Universidade de Brasília (RIUnB) pelo editor para disponibilizar a obra, com as seguintes condições: disponível sob Licença Creative Commons 4.0, que permite copiar, distribuir e transmitir o trabalho, desde que seja citado o autor e licenciante. Não permite adaptações da obra. Não permite o uso para fins comerciais. |
Appears in Collections: | Artigos publicados em periódicos e afins |
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