GEOCHEMISTRY AND PETROLOGY OF VOLCANIC ROCKS IN THE NORTH OF MEYDOOK COPPER DEPOSIT WITH REFERENCE TO ALTERATION ROLE IN THE PORPHYRY COPPER MINERALIZATION

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RASOULI JAMAL; GHORBANI MANSOOR

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Journal: GEOCHEMISTRY Year:2016 | Volume:4 | Issue:4 Page(s): 315-325

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Title

GEOCHEMISTRY AND PETROLOGY OF VOLCANIC ROCKS IN THE NORTH OF MEYDOOK COPPER DEPOSIT WITH REFERENCE TO ALTERATION ROLE IN THE PORPHYRY COPPER MINERALIZATION

Author(s)

RASOULI JAMAL | GHORBANI MANSOOR | Issue Writer Certificate

Keywords

VOLCANIC ROCKSQ2

CALC-ALKALINE MAGMATISMQ2

SUBDUCTION ZONEQ2

URMIA-DOKHTAR MAGMATIC BELTQ2

Abstract

The study area is located in the north of Meydook porphyry copper deposit, north east of Shahr- babak. The VOLCANIC ROCKS consist of basaltic andesite, andesite, trachyte and trachy-andesite and pyroclastic deposits are mainly lithic tuffs and trachyte tuffs. Plutonic to subVOLCANIC ROCKS are combined with dolerite. The rocks are formed during 4 magmatic phases from Eocene to Pliocene. The first stage is altered dark basalts with Lower Eocene age (the oldest magmatic activity in this area). The Second stage is andesite, dark green to brown trachyte and with volcanic breccias with middle to upper Eocene age. The third stage is porphyry andesite with very coarse-grained phenocrysts with Upper Eocene to Oligocene age. The fourth stage consists of some ore-bearing porphyry intrusives with acidic domes belonging to middle Miocene to Pliocene age. Based on geochemical data, trace and REE element diagrams the rocks are calc-alkaline in nature. The study of VOLCANIC ROCKS shows a relative enrichment of large ion lithophile elements (eg., K, Ba, Rb) and depletion in high field strength elements (HFSE) Nb, Ti, Eu normalized to chondrites and primitive mantle. In the geochemical-tectonic diagrams, the VOLCANIC ROCKS of north of Meydook copper deposit show a close relationship having formed in an active continental margin. Geochemical evidence reveals a common magma source for VOLCANIC ROCKS which had been formed in a SUBDUCTION ZONE. The results are consistent with magmatism in Urmia-Dokhtar belt.

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APA: Copy

RASOULI, JAMAL, & GHORBANI, MANSOOR. (2016). GEOCHEMISTRY AND PETROLOGY OF VOLCANIC ROCKS IN THE NORTH OF MEYDOOK COPPER DEPOSIT WITH REFERENCE TO ALTERATION ROLE IN THE PORPHYRY COPPER MINERALIZATION. GEOCHEMISTRY, 4(4), 315-325. SID. https://sid.ir/paper/230868/en

Vancouver: Copy

RASOULI JAMAL, GHORBANI MANSOOR. GEOCHEMISTRY AND PETROLOGY OF VOLCANIC ROCKS IN THE NORTH OF MEYDOOK COPPER DEPOSIT WITH REFERENCE TO ALTERATION ROLE IN THE PORPHYRY COPPER MINERALIZATION. GEOCHEMISTRY[Internet]. 2016;4(4):315-325. Available from: https://sid.ir/paper/230868/en

IEEE: Copy

JAMAL RASOULI, and MANSOOR GHORBANI, “GEOCHEMISTRY AND PETROLOGY OF VOLCANIC ROCKS IN THE NORTH OF MEYDOOK COPPER DEPOSIT WITH REFERENCE TO ALTERATION ROLE IN THE PORPHYRY COPPER MINERALIZATION,” GEOCHEMISTRY, vol. 4, no. 4, pp. 315–325, 2016, [Online]. Available: https://sid.ir/paper/230868/en

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