Eruptive centre localization by means of aeromagnetometry in the central area of the Cura Valley, San Juan, Argentina: Implications for the evolution of the Cenozoic arc/retroarc
A solid geology map was prepared for the study region, based on the aeromagnetic survey and geological mapping of the region. The geological-structural analysis of the aeromagnetic survey has identified circular features interpreted as anular fractures associated with eruptive centres. The Brea erup...
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2005
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v32_n1_p77_Litvak http://hdl.handle.net/20.500.12110/paper_07160208_v32_n1_p77_Litvak |
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paper:paper_07160208_v32_n1_p77_Litvak2023-06-08T15:42:51Z Eruptive centre localization by means of aeromagnetometry in the central area of the Cura Valley, San Juan, Argentina: Implications for the evolution of the Cenozoic arc/retroarc Aereomagnetometry Cenozoic Central Andes Eruptive centres geological mapping volcanic eruption Argentina San Juan [Argentina] South America Western Hemisphere World Cura A solid geology map was prepared for the study region, based on the aeromagnetic survey and geological mapping of the region. The geological-structural analysis of the aeromagnetic survey has identified circular features interpreted as anular fractures associated with eruptive centres. The Brea eruptive centre is of shallow nature; there is no evidence of the occurrence of an associated subvolcanic body; it is located in a structurally favourable setting characterized by the intersection of a submeridional thrust and a system of NE-trending fractures; its age is assigned to the Eocene and it is located in a back-arc setting, considering the location of the contemporaneous volcanic-arc deposits. The Zancarrón eruptive centre is regarded as a volcanic caldera, an observation which is consistent with the geological evidences of the presence of a Miocene strato-volcano in this region. There is geophysical evidence that indicates Oligocene volcanic rocks underlying the core of the eruptive centre, which suggests that its magmatic activity would have started during the Oligocene; in the case, the Zancarrón eruptive centre would represent an additional centre of the Doña Ana Group (Oligocene) similar to the one recognized within the Chilean territory. Based on the association of this group with minerralised hydrothermal alteration zones within the Valle del Cura region, the possible identification of covered Oligocene volcanic rocks may be of a sppecial interest for mining exploration. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v32_n1_p77_Litvak http://hdl.handle.net/20.500.12110/paper_07160208_v32_n1_p77_Litvak |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Aereomagnetometry Cenozoic Central Andes Eruptive centres geological mapping volcanic eruption Argentina San Juan [Argentina] South America Western Hemisphere World Cura |
| spellingShingle |
Aereomagnetometry Cenozoic Central Andes Eruptive centres geological mapping volcanic eruption Argentina San Juan [Argentina] South America Western Hemisphere World Cura Eruptive centre localization by means of aeromagnetometry in the central area of the Cura Valley, San Juan, Argentina: Implications for the evolution of the Cenozoic arc/retroarc |
| topic_facet |
Aereomagnetometry Cenozoic Central Andes Eruptive centres geological mapping volcanic eruption Argentina San Juan [Argentina] South America Western Hemisphere World Cura |
| description |
A solid geology map was prepared for the study region, based on the aeromagnetic survey and geological mapping of the region. The geological-structural analysis of the aeromagnetic survey has identified circular features interpreted as anular fractures associated with eruptive centres. The Brea eruptive centre is of shallow nature; there is no evidence of the occurrence of an associated subvolcanic body; it is located in a structurally favourable setting characterized by the intersection of a submeridional thrust and a system of NE-trending fractures; its age is assigned to the Eocene and it is located in a back-arc setting, considering the location of the contemporaneous volcanic-arc deposits. The Zancarrón eruptive centre is regarded as a volcanic caldera, an observation which is consistent with the geological evidences of the presence of a Miocene strato-volcano in this region. There is geophysical evidence that indicates Oligocene volcanic rocks underlying the core of the eruptive centre, which suggests that its magmatic activity would have started during the Oligocene; in the case, the Zancarrón eruptive centre would represent an additional centre of the Doña Ana Group (Oligocene) similar to the one recognized within the Chilean territory. Based on the association of this group with minerralised hydrothermal alteration zones within the Valle del Cura region, the possible identification of covered Oligocene volcanic rocks may be of a sppecial interest for mining exploration. |
| title |
Eruptive centre localization by means of aeromagnetometry in the central area of the Cura Valley, San Juan, Argentina: Implications for the evolution of the Cenozoic arc/retroarc |
| title_short |
Eruptive centre localization by means of aeromagnetometry in the central area of the Cura Valley, San Juan, Argentina: Implications for the evolution of the Cenozoic arc/retroarc |
| title_full |
Eruptive centre localization by means of aeromagnetometry in the central area of the Cura Valley, San Juan, Argentina: Implications for the evolution of the Cenozoic arc/retroarc |
| title_fullStr |
Eruptive centre localization by means of aeromagnetometry in the central area of the Cura Valley, San Juan, Argentina: Implications for the evolution of the Cenozoic arc/retroarc |
| title_full_unstemmed |
Eruptive centre localization by means of aeromagnetometry in the central area of the Cura Valley, San Juan, Argentina: Implications for the evolution of the Cenozoic arc/retroarc |
| title_sort |
eruptive centre localization by means of aeromagnetometry in the central area of the cura valley, san juan, argentina: implications for the evolution of the cenozoic arc/retroarc |
| publishDate |
2005 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v32_n1_p77_Litvak http://hdl.handle.net/20.500.12110/paper_07160208_v32_n1_p77_Litvak |
| _version_ |
1768544229908283392 |