Tectonic evolution of the Neoproterozoic Tandilia sedimentary cover, Argentina: New evidence of contraction and extensional events in the southwest Gondwana margin

At the northwestern portion of the Tandilia System, a detailed structural analysis on the Precambrian sedimentary units exposed in the quarries of the Olavarría-Sierras Bayas area was carried out. These units exhibit deformational structures of several scales, from centimeters to hundreds of meters....

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Detalles Bibliográficos
Autores principales: Hernández, Mariano, Arrouy, María Julia, Scivetti, Nicolás, Franzese, Juan Rafael, Canalicchio, José M., Poiré, Daniel Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Naturales
Geología
Folding
Fractures
La Providencia Group
Normal faulting
Precambrian
Sierras Bayas Group
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/102358
https://ri.conicet.gov.ar/11336/50256
https://www.sciencedirect.com/science/article/abs/pii/S0895981117300962
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-102358
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Geología
Folding
Fractures
La Providencia Group
Normal faulting
Precambrian
Sierras Bayas Group
spellingShingle Ciencias Naturales
Geología
Folding
Fractures
La Providencia Group
Normal faulting
Precambrian
Sierras Bayas Group
Hernández, Mariano
Arrouy, María Julia
Scivetti, Nicolás
Franzese, Juan Rafael
Canalicchio, José M.
Poiré, Daniel Gustavo
Tectonic evolution of the Neoproterozoic Tandilia sedimentary cover, Argentina: New evidence of contraction and extensional events in the southwest Gondwana margin
topic_facet Ciencias Naturales
Geología
Folding
Fractures
La Providencia Group
Normal faulting
Precambrian
Sierras Bayas Group
description At the northwestern portion of the Tandilia System, a detailed structural analysis on the Precambrian sedimentary units exposed in the quarries of the Olavarría-Sierras Bayas area was carried out. These units exhibit deformational structures of several scales, from centimeters to hundreds of meters. The hundreds of meters scale involves E-W- and NW-SE-trending normal faults and NW-SE- and NE-SW-trending contractional folds. The centimeters to meters scale involves veins, joints, normal faults, shear fractures and stylolites, with a prevailing ∼ E-W to NW-SE trend. All these structures were formed by two major tectonic events. The first was the folding event at ∼580 Ma, with NNE-SSW to NE-SW and NW-SE direction of contraction. The second was the extensional faulting event, given by the widespread NNE-SSW-directed extension event during the Atlantic Ocean opening (Jurassic-Cretaceous). Both major events would have been controlled by the reactivation of basement anisotropies. These major tectonic events controlled the deformation of the Precambrian sedimentary cover of the Tandilia system, leading to an economically important aspect in the mining development of the Olavarría-Sierras Bayas area.
format Articulo
Articulo
author Hernández, Mariano
Arrouy, María Julia
Scivetti, Nicolás
Franzese, Juan Rafael
Canalicchio, José M.
Poiré, Daniel Gustavo
author_facet Hernández, Mariano
Arrouy, María Julia
Scivetti, Nicolás
Franzese, Juan Rafael
Canalicchio, José M.
Poiré, Daniel Gustavo
author_sort Hernández, Mariano
title Tectonic evolution of the Neoproterozoic Tandilia sedimentary cover, Argentina: New evidence of contraction and extensional events in the southwest Gondwana margin
title_short Tectonic evolution of the Neoproterozoic Tandilia sedimentary cover, Argentina: New evidence of contraction and extensional events in the southwest Gondwana margin
title_full Tectonic evolution of the Neoproterozoic Tandilia sedimentary cover, Argentina: New evidence of contraction and extensional events in the southwest Gondwana margin
title_fullStr Tectonic evolution of the Neoproterozoic Tandilia sedimentary cover, Argentina: New evidence of contraction and extensional events in the southwest Gondwana margin
title_full_unstemmed Tectonic evolution of the Neoproterozoic Tandilia sedimentary cover, Argentina: New evidence of contraction and extensional events in the southwest Gondwana margin
title_sort tectonic evolution of the neoproterozoic tandilia sedimentary cover, argentina: new evidence of contraction and extensional events in the southwest gondwana margin
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/102358
https://ri.conicet.gov.ar/11336/50256
https://www.sciencedirect.com/science/article/abs/pii/S0895981117300962
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