Akademik Veri Yönetim Sistemi
7th Biennial SGA Meeting, Athens, Yunanistan, 24 - 28 Ağustos 2003, ss.429-432, (Tam Metin Bildiri)
The Emirli epithermal stibnite-gold deposit is located in western Turkey and occurs within an argillic alteration zone close to the Emirli fault. Spatially associated with the deposit is a dolomite layer containing minor pyrite. Dolomite crystals have a consistent deep-red CL colour with no zoning, whilst intercrystalline pores and some crystal boundaries are dark. EDS analysis indicates Fe-enrichment and Mg-depletion, showing a late stage Fe metasomatism (ankeritisation). delta(13)C(PDB) data indicate that the dolomites resulted from the interaction of light-carbon enriched fluids with calcitic marbles and the carbon was sourced from decarbonation of graphitic schists. Dolomite and marble delta(18)O(PDB) show large isotopic differences, and these are attributed to oxygen isotope exchange between dolomitising fluid and precursor calcites. Estimates of delta(18)O(PDB) fluid compositions (c. -19parts per thousand) indicate derivation from modified surface waters. High heat flow related to extensional tectonics is believed to be responsible for the hydrothermal activity.