Very low grade metamorphism of Upper Paleozoic-Lower Mesozoic sedimentary rocks related to burial and thrusting in the Central Taurus Belt, Konya, Turkey

Metasedimentary and sedimentary rocks that represent the allochthonous Bolk ardagi Unit crop out in the Central Taurus Belt. Devonian units include mai nly slate, metadolomite, metadolomitic limestone, and metasandstone. Slates with slaty cleavage and chlorite-mica stacks are characterized by phyllosi licate, quartz, calcite, dolomite, feldspar, and goethite. Phyllosilicates consist of 2M(1) and lesser amounts of 1M muscovite, IIb, chlorite, pyrophy llite, paragonite. PM, C-V, C-S. rectorite, and dickite. and reflect condit ions of the low epizone-anchizone. In the Carboniferous-Triassic units. lim estone, clayey limestone, dolomitic limestone, marl, shale, and sandstone r etaining primary textures are composed of calcite, dolomite, quartz, 1M,I i llite, chlorite, and T-S, and locally smaller quantities of 2M(1) muscovite , PM, paragonite, pyrophyllite, and rectorite. In contrast, the Triassic fo rmation is made up of calcite. 1M(d) illite, I-S, kaolinite, smectite, chlo rite, C-S, C-V, dolomite. and quartz. Textural and mineralogical data indic ate that development of the diagenetic-metamorphic grade in the Central Tau rus was related to sedimentary burial and thrusting; moreover. the metasedi mentary rocks were metamorphosed in a typical anticlockwise P-T-t pathway i n an extensional setting.