Magnetic and gravity anomalies in the Sierra del Padre and Sierra del Tala, San Luis Province, Argentina: evidence of buried mafic-ultramafic rocks
This paper presents the results of a geophysical study of the southern portion of the Sierra Grande de San Luis, San Luis Province, Argentina. A 26 mGal amplitude Bouguer anomaly 5Charlone anomaly), measuring 40 km long by 7 km wide, between Sierra de los Padres and Zanjitas re ̄ects the presence of...
| Autores: | , , , , , , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2001 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/31223 |
| Acesso em linha: | http://hdl.handle.net/11336/31223 |
| Access Level: | acceso abierto |
| Palavra-chave: | Mafic-Ultramafic Bms Geophysic Argentina https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
| Resumo: | This paper presents the results of a geophysical study of the southern portion of the Sierra Grande de San Luis, San Luis Province, Argentina. A 26 mGal amplitude Bouguer anomaly 5Charlone anomaly), measuring 40 km long by 7 km wide, between Sierra de los Padres and Zanjitas re ̄ects the presence of high-density rocks located at approximately 2000 m depth. Geophysical models based on more than 300 gravimetric, magnetometric, and geological ®eld measurements and observations suggest that the ma®c±ultrama®c belt of Sierra Grande de San Luis continues south of San Luis. The low magnitude of the terrestrial magnetic ®eld anomalies indicates that these ma®c±ultrama®c rocks do not carry a base metal sul®des 5BMS) mineralization. The Charlone gravimetric anomaly is generated by a belt of ma®c± ultrama®c rocks whose amplitude is comparable with that responsible for the Virorco-Las Aguilas gravimetric anomaly. |
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