GEOLOGY, GEOCHEMISTRY AND GENESIS OF POLYMETAL MINERALIZATION IN THE MIVEH–RUD AREA, NW IRAN

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JAMALI HEMAYAT; YAGHOUBPOUR A.A.M.; MEHRABI BEHZAD

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Journal: GEOSCIENCES Year:2009 | Volume:18 | Issue:71 Page(s): 53-62

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Title

GEOLOGY, GEOCHEMISTRY AND GENESIS OF POLYMETAL MINERALIZATION IN THE MIVEH–RUD AREA, NW IRAN

Author(s)

JAMALI HEMAYAT | YAGHOUBPOUR A.A.M. | MEHRABI BEHZAD | Issue Writer Certificate

Keywords

POLYMETALQ2

POLYFORMQ3

SKARNQ2

GEOCHEMICAL ZONEQ3

MIVEH-RUDQ3

Abstract

Miveh–Rud area is located 50 km north of Tabriz and 65 km west of Ahar at 36o 33′ 02″to 38 o, 34′ 52″ N and 46o 12’ 20” to 46 o 14’ 35” E. The oldest rock unit in the area includes a thick sequence of Paleocene sedimentary rocks comprising of sandstone, shale, siltstone, marl and marly limestone that have been intruded by a porphyritic intrusive body and dykes of granodioritic to diabasic composition (probably Oligocene in age). The intrusive rocks resulted in the formation of hornfels, SKARN and alteration in Paleocene rocks. All of the mentioned rock units are unconformably covered by Pliocene age trachyte, trachyandesite. Alteration of potassic, sericitic, argillic, propylithic and silicification types occurred in the subvolcanic and sedimentary rocks, while there is no observed alteration in the volcanic cover. Anomalies of Au, Ag, Sb, Cu, Bi, W and Mo detected by geochemical investigations are confirmed by field evidences.The anomalies of Sb, Ag, Au and As are located in the northern part, while the Cu, Co, W and Mo anomalies are in the southern part of the area. The degree of the contact metamorphism decreases toward the north and the potassic alteration can be shown mostly in the southern part of the area. This may suggest uplift and erosion of the southern part compared to northern part of the studied area. Composite halos of As, Pb, Ag / Cu, W and Co confirm the results. The mineralization includes formation of SKARN, epithermal and sheeted veins. The epithermal veins cut the SKARN and other contact metamorphic rocks.

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APA: Copy

JAMALI, HEMAYAT, YAGHOUBPOUR, A.A.M., & MEHRABI, BEHZAD. (2009). GEOLOGY, GEOCHEMISTRY AND GENESIS OF POLYMETAL MINERALIZATION IN THE MIVEH–RUD AREA, NW IRAN. GEOSCIENCES, 18(71), 53-62. SID. https://sid.ir/paper/32433/en

Vancouver: Copy

JAMALI HEMAYAT, YAGHOUBPOUR A.A.M., MEHRABI BEHZAD. GEOLOGY, GEOCHEMISTRY AND GENESIS OF POLYMETAL MINERALIZATION IN THE MIVEH–RUD AREA, NW IRAN. GEOSCIENCES[Internet]. 2009;18(71):53-62. Available from: https://sid.ir/paper/32433/en

IEEE: Copy

HEMAYAT JAMALI, A.A.M. YAGHOUBPOUR, and BEHZAD MEHRABI, “GEOLOGY, GEOCHEMISTRY AND GENESIS OF POLYMETAL MINERALIZATION IN THE MIVEH–RUD AREA, NW IRAN,” GEOSCIENCES, vol. 18, no. 71, pp. 53–62, 2009, [Online]. Available: https://sid.ir/paper/32433/en

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