Epithermal gold-copper mineralization associated with Late Neogene-magmatism and crustal extension crustal extension in the Sunda-Banda Arc.

SOERIA-ATMADJA, Rubini and SUNARYA, yudi and SUTANT0, sutanto and HENDARYON0, hendar (1998) Epithermal gold-copper mineralization associated with Late Neogene-magmatism and crustal extension crustal extension in the Sunda-Banda Arc. GeoL. Soc. MaLaysiia, BuLLetin, 24. pp. 257-268.

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Abstract

Abstract: The majority of gold-copper mineralization along the Sunda-Banda arc belongs to lowsulfidation
epithermal type. Studies by previous authors suggest that mineralization environment
changes from low-sulfidation epithermal in the western segment of the arc, minor porphyry and highsulfidation
epithermal to submarine stratiform deposit in the eastern region. It seems that the nature
of geologic setting and magmatic evolution exert a profound influence on the mineralization environment.
Most epithermal mineralization are hosted by stratovolcanoes and are associated with old caldera
complexes controlled by strike-slip faults and graben subsidence. The present available K-Ar ages of
mineralization suggest that the process is related to primarily Late Neogene volcanic eruption of fine
silicic pyroclastics of calc-alkaline to potassic calc-alkaline affinity.

Item Type:	Article
Subjek:	Q Science > QE Geology
Depositing User:	sutanto sutanto -
Date Deposited:	09 Aug 2017 07:40
Last Modified:	18 Aug 2017 05:50
URI:	http://eprints.upnyk.ac.id/id/eprint/12367

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