Implicaciones de los enclaves máficos microgranulares en la petrogénesis de los granitoides calcoalcalinos hercínicos
Hercynian calc-alkaline granitoids are characterized by the presence of microgranular magmatic enclaves of tonalitic to diorite composition. Recent studies of these enclaves and host granitoids reveal that they were generated from disruption of synplutonic dikes of hybrid tonalites. Two stages of hy...
| Autores: | , , |
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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:10272/18177 |
| Acceso en línea: | http://hdl.handle.net/10272/18177 |
| Access Level: | acceso abierto |
| Palabra clave: | Microgranular enclave Magma mixing Hybridization Texture Xenocrysts Grani-toid Hercynian belt |
| Sumario: | Hercynian calc-alkaline granitoids are characterized by the presence of microgranular magmatic enclaves of tonalitic to diorite composition. Recent studies of these enclaves and host granitoids reveal that they were generated from disruption of synplutonic dikes of hybrid tonalites. Two stages of hybridization can be distinguished: (1) Injection mixing giving to a hybrid tonalite from a mafic magma, and (2) convective mixing, giving rise to homogeneous hybrid rocks of calc-alkaline composition |
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