Bahaedin Nakhjavani; Ali Asghar Calagari; Seyed ghafour Aavi; Kamal Siah Cheshm
Abstract
The monzonitic-syenitic Gowdal intrusive body located in the north of Ahar, East- Azerbaidjan province is a member of the Shivardagh batholithic body and a part of the Alborz- Azerbaidjan- ...
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The monzonitic-syenitic Gowdal intrusive body located in the north of Ahar, East- Azerbaidjan province is a member of the Shivardagh batholithic body and a part of the Alborz- Azerbaidjan- Lesser Caucasus magmatic belt related to the Meso-Tethys (Sevan- Akera- Ghareh Dagh) Ocean. Fe- Cu and Mo skarn mineralization (magnetite, specularite, pyrite, chalcopyrite, and molybdenite) occurred at the contact of the Gowdal intrusive body with limestone- marly limestone units. The supergene copper and iron minerals (malachite, azurite, secondary hematite, and Fe-hydroxides) are superimposed on the hypogene skarn mineralization assemblages. Based upon diagrams of major elements versus SiO2, with mean values, ratios of trace elements, and diagrams of trace elements, the Gowdal intrusive body formed from relatively evolved magma and compositionally lies within the range of intrusive bodies affiliated with copper and to some extent zinc skarns. On the other hand, distribution patterns of trace elements of the Gowdal intrusive body normalized to N-MORB shows considerable similarity to known zinc and to some extent copper skarn-related intrusive bodies. Consequently, despite having dominant iron mineralization at the current level, the Gowdal intrusive body displays the utmost similarity with the bodies associated with copper skarns.
