Estructuras de desvitrificación en lavas ácidas del Paleozoico medio-superior del Sarrabus (SE de la isla de Cerdeña. Italia)
This note describes the presence of fine devitrification structures within the acid calcalkaline lavas of Sarrabus region, SE Sardinia, Italy (Silurian-Devonian). Devitrification ranges from micropoikilitic to spherulitic stages; spherulites grew both on phenocrysts and on mesostase. Devitrification...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1990 |
| País: | España |
| Institución: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | español |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/18167 |
| Acceso en línea: | http://hdl.handle.net/10272/18167 |
| Access Level: | acceso abierto |
| Palabra clave: | Devitrification structures Acid laoas Sardinia Italy |
| Sumario: | This note describes the presence of fine devitrification structures within the acid calcalkaline lavas of Sarrabus region, SE Sardinia, Italy (Silurian-Devonian). Devitrification ranges from micropoikilitic to spherulitic stages; spherulites grew both on phenocrysts and on mesostase. Devitrification structures comparable to the present ones evidences preservation of acid lavas within a quiet environment, isolated from tectonic activity and without important superficial leaching |
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