Türkiye Jeoloji Bülteni

Heavy Minerals of Fluvial Sediments in the Çiniyeri-Küre (Tire) Area

Abstract: Focused both on their lithological compositions and structural attitudes, basement rock units in theÇiniyeri-Küre area of Menderes Massif are made of augen gneiss, kyanite-garnet schist, garnet-mica schist calc-schist,marbles, amphibolites and dykes of gabbroic type. Data have been obtained from petrographical and mineralogicalstudy indicated that garnet-mica schists are not found as a homogenious unit but that they exhibit local changesbetween quartz-muskc vite and mica schists. This formation is locally cut by quartz veins including rutile. The metamorphic units along the southern edge of Küçük Menderes graben are covered by Quaternary sediments deposited withinan alluvial fan environment.Rutile is one of the most important heavy minerals of fluvial sediments. Detailed studies revealed that heavyminerals accompanying rutile were mainly derived from the metamorphic basement. On the other hand, volumes and rutile contents of quartz veins do not reach considerable amounts, the absolute contributions of quartz veins to the totalheavy mineral concentrations are less than metamorphic rocks. The heavy minerals which are accumulated under turbulent flow conditions, generally, enriched on the levels paralel to the channel. We can expressed that the textural parametres of sediments can be used as useful criteria for the exploration of heavy mineral concentrations.