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Magmatic mafic enclaves in granitoids of northern Sierra de Paimán, Argentina
Author(s) -
Lorenc Marek W.
Publication year - 1990
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350250322
Subject(s) - mafic , geology , geochemistry , fragmentation (computing) , petrology , computer science , operating system
Field relationships of three types of granitoids with basic rocks, with different mineralogy and structure are described. Zones of mixed‐type character exist between the several types of granitoids as well as between the granitoids and basic rocks. The distribution of magmatic mafic enclaves (MME) in the granitoids varies widely but the largest concentrations occur in the mixed zones between the granites and basic bodies. The origin of such enclaves is closely related to processes of hybridization and mingling of acid and basic magmas. One of the possible variants of such interaction is the fragmentation and partial hybridization of synplutonic basic dykes.