Artículo
Lower-middle ordovician sedimentary environment and provenance of the suri formation in the northern region of the Famatina belt, Catamarca, Argentina
Armas, María Paula
; Cristofolini, Eber Ariel
; Escribano, Facundo Agustín
; Camilletti, Giuliano Cesar
; Barzola, Matias Gaston
; Otamendi, Juan Enrique
; Cisterna, Clara Eugenia
; Leisen, Mathieu; Romero, Rurik; Barra, Fernando; Tibaldi, Alina María
Fecha de publicación:
01/2021
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Journal of South American Earth Sciences
ISSN:
0895-9811
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The Suri Formation is a sedimentary-volcanic succession in the Famatina belt formed during Lower - Middle Ordovician arc magmatism along the western margin of Gondwana. This study reports new lithostratigrafic data relating to the Suri Formation in the Chaschuil valley (Catamarca). The survey defines the main characteristics of volcanism and sedimentation through facies analysis. Epiclastic, volcaniclastic, pyroclastic and peperitic facies were recognized and interpreted in five facies association. The features and relationships of the facies associations indicate environments such as apron volcaniclastic, inner to an outer shelf, and fan distal delta, interbedded with effusive and explosive volcanism. Volcanic activity and relative sea-level changes were controls on sedimentation style in basins adjacent to the volcanic edifice. The study reports U–Pb geochronological analysis of zircon from a sandstone sample of the Suri Formation to infer detrital provenance. The detrital zircon pattern with peaks at 486 Ma points to active Famatinian magmatism as recorded on the nearby Narváez batholith. Eruptive masses experienced rapid reworking, short sedimentary transport and intra-arc deposition. The maximum deposition age of detrital zircon corresponds to a subordinate age cluster at 464.4 ± 4.4 Ma and reflects synchronism between volcano-sedimentary deposition in the Suri Formation and plutonic-volcanic construction of the Las Planchadas Formation.
Palabras clave:
Famatinian arc
,
Suri Formation
,
Gondwana
,
Volcano-sedimentary deposit
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Articulos (ICBIA)
Articulos de INSTITUTO DE CIENCIAS DE LA TIERRA, BIODIVERSIDAD Y AMBIENTE
Articulos de INSTITUTO DE CIENCIAS DE LA TIERRA, BIODIVERSIDAD Y AMBIENTE
Citación
Armas, María Paula; Cristofolini, Eber Ariel; Escribano, Facundo Agustín; Camilletti, Giuliano Cesar; Barzola, Matias Gaston; et al.; Lower-middle ordovician sedimentary environment and provenance of the suri formation in the northern region of the Famatina belt, Catamarca, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 105; 1-2021; 1-15
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