Towards deciphering the Cenozoic evolution of the East Pisco Basin (southern Peru)

Autor: C. Di Celma, P.P. Pierantoni, T. Volatili, G. Molli, S. Mazzoli, G. Sarti, S. Ciattoni, G. Bosio, E. Malinverno, A. Collareta, K. Gariboldi, A. Gioncada, D. Jablonska, W. Landini, M. Urbina, G. Bianucci
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Maps, Pp 1-16 (2022)
Druh dokumentu: article
ISSN: 17445647
1744-5647
25147870
DOI: 10.1080/17445647.2022.2072780
Popis: The Cenozoic succession of the East Pisco Basin preserves the sedimentary record of several episodes of deformation of the forearc crust along the Peruvian margin. The 1:50,000 scale geological map presented here encompasses an area of about 1,000 km2 lying astride the Ica River, and contributes to our understanding of the timing and mode of basin filling and deformation. Our novel two-fold megasequence framework provides a sound basis for establishing a first-order tectono-stratigraphic setting of the mid-Eocene–upper Miocene succession exposed in the study area. We interpret that the mid-Eocene to lower Oligocene succession studied in this work (megasequence P) was deposited in a single forearc basin, which was dissected into the present-day West and East Pisco basins by a fault-bounded basement high during the late Oligocene, and subsequently overlain by the Miocene fill of the East Pisco basin (megasequence N).
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