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Porphyry and Related Deposits in Subduction and Post‐Subduction Settings
Author(s) -
Richards Jeremy P.
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12374_19
Subject(s) - subduction , citation , geology , magma , geochemistry , library science , history , tectonics , computer science , volcano , paleontology
Porphyry Cu±Mo±Au deposits typically form from hydrothermal fluids exsolved from subduction-related calc-alkaline magmas. However, it has become clear over the last two decades that similar deposit types can also form in distal or post-subduction tectonic settings, such as during back-arc extension, arc reversal, collision-related lithospheric delamination, and post-collisional stress relaxation and thermal rebound. This wide range of tectonic settings leads to a wide range of potential sources and conditions for magma genesis, and consequently to a wide range of possible associated ore deposit types.