Petrology and geochemistry of some high pressure rocks from northern part of Rio San Juan complex, Dominican Republic
Master of Science (MS)
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Petrology, Dominican Republic, Geochemistry
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The Rio San Juan Complex is an important occurrence of high pressure/low temperature rocks in the circum-Caribbean region which contains both coherent blueschist units and two varieties of melange in the same area. The melanges contain a diverse assemblage of blocks of various sizes, different degrees of metamorphism, and mineral assemblages. Some high pressure blocks show two stages of metamorphism. The earliest stage is characterized by high pressure-low temperature conditions and the second stage is characterized by high pressure-lower temperature conditions. The geochemistry of thirteen samples from the Rio San Juan Complex has been studied and data have been compared with rocks of adjacent regions. Geochemical evidence indicates that rocks from the Rio San Juan Complex have predominant calc-alkaline affinities with subordinate tholeiitic affinities. This suggests that they have a multiple tectonic provenance.
Anam, Khandaker I., "Petrology and geochemistry of some high pressure rocks from northern part of Rio San Juan complex, Dominican Republic" (1993). FIU Electronic Theses and Dissertations. 1284.
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