Groeber and the triassic in Argentina
Pablo Groeber´s contributions to characterize the Triassic of Argentina and, in particular, the chapter about the System included in the book Geografía de la República Argentina, written in co-authorship with Pedro Stipanicic, are discussed. A binary division for the Argentine Triassic is originally...
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| Autores principales: | , |
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| Formato: | JOUR |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00044822_v74_n1_p74_Ottone |
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| Sumario: | Pablo Groeber´s contributions to characterize the Triassic of Argentina and, in particular, the chapter about the System included in the book Geografía de la República Argentina, written in co-authorship with Pedro Stipanicic, are discussed. A binary division for the Argentine Triassic is originally proposed. The beginning of the infilling is characterized by the volcanics and sedimentary rocks attributed to the “Choiyoilitense”, the “Paganzo III”, and equivalent units all considered Carnian in age. This succession is unconformably overlied by Norian-Rhaetian continental sedimentary rocks. More recently, several new absolute dates obtained from different units attributed to the Triassic produced a different temporal context, where the first phase of infilling is located between the Cisuralian and the Early Triassic (eg., the “Choiyoilitense”, the “Paganzo III”) and the second phase of continental sedimentation is restricted to the Middle and Late Triassic. Nevertheless, these new ages did not change the original binary lithostratigraphic scheme proposed by Pablo Groeber and Pedro Stipanicic in their Geografía as it is still essentially valid to characterize the Triassic of Argentina. © 2017, Asociacion Geologica Argentina. All rights reserved. |
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