Geochronological constraints on the age of a Permo–Triassic impact event: U–Pb and 40Ar/39Ar results for the 40 km Araguainha structure of central Brazil

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Geochronological constraints on the age of a Permo–Triassic impact event: U–Pb and 40Ar/39Ar results for the 40 km Araguainha structure of central Brazil

Impact cratering has been a fundamental geological process in Earth history with major ramifications for the biosphere. The complexity of shocked and melted rocks within impact structures presents difficulties for accurate and precise radiogenic isotope age determination, hampering the assessment of...

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Bibliographic Details
Main Authors:	Tohver, E, Lana, C, Cawood, Peter, Fletcher, Ian, Jourdan, Fred, Sherlock, Sarah, Rasmussen, Birger, Trindade, R, Yokoyama, E, Souza-Filho, C, Marangoni, Y
Format:	Journal Article
Published:	Pergamon-Elsevier Science Ltd 2012
Online Access:	http://hdl.handle.net/20.500.11937/44373

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