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Marcelo Manassero,Patricia E. Zalba,Renato R. Andreis,Martin Morosi
Pág. 13 - 26
The volcaniclastic successions of the Cerro Barcino Formation (Chubut Group), of Aptian-Cenomanian age, crop out on both margins of the Chubut River with a thickness of 200 m. The Middle Member Cerro Castaño (syneruptive, 90 m) and the Upper Member, Las ...
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Patricia E. Zalba,Cristina Volzone,Liliana E. Garrido,Martín Morosi,Enrique Pereira
Pág. 303 - 311
ABSTRACT. Clay mineral composition and diagenetic processes of the two depositional systems recognized in the Cerro Negro Formation (Precambrian) were analyzed. The Cerro Negro Formation consists of calcareous and siliciclastic rocks of brown-olive to gr...
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