In the Konya area, the Neotethyan assemblage is represented by Late Cretaceous aged Hatıp Ophiolitic Mélange, in where the metamorphic sole rocks crop out as thin slices beneath the sheared serpentinites and harzburgites, and Çayırbağı ophiolite. This study aims to characterize the mineralogical characteristics and chemical composition of the amphiboles in the metamagmatic sole rocks of the Hatıp Ophiolitic Mélange. The main rock types in the metamorphic sole rocks are amphibolite (amphibole up to 90.3 %); epidote-amphibolite (65.3% amphibole); zoisite-amphibolite (amphibole 52.2%) and amphibolequartzite (amphibole 28.5%) with nematoblastic to porphyroblastic texture. The microprobe analyses of the amphiboles suggest that the amphiboles have crystallized from a wet magma in medium pressure condition (≤ 7 kb), and are magnesiohornblende, pargasite and edenite in composition. The obtained data also reveal that the Neotethyan assemblage has experienced a regional metamorphism in greenschist facies conditions, which resulted in no chemical changes in the amphiboles.
T he term epidote {Ca 2 Fe x Al 3-x Si 3 0 12 (OH)} first used in 1801 by Haüy [1], typically forms as a result of medium-temperature alterations of intermediate-basic rocks [2]. However, It is also recognised in various magmatic rocks, e.g. alkaline granite [3], granodiorite, monzogranite [4], tonalite [5], orbicular diorite [6] [7], gabbro [8] and dacite [9]. Epidote can also be developed in eclogites [10], and high-pressure migmatites and pegmatites derived from eclogites [11] [12]. In the SW part of Konya city, widespread epidote minerals occur in the metamorphic basement at the base of Neotethyan ophiolitic melange, which tectonically overlied the Middle Triassic-Upper Cretaceous carbonates (Midostepe and Lorasdagi formations) of the Tauride platform [13] (Fig. 1). The Melange contains Carboniferous-Late Cretaceous carbonates, radiolarian cherts, ultramafic rocks, volcanics and gabbro bodies within sedimentary and sheared serpentinite matrix. Çayırbağı ophiolites obducted onto the melange, and contain various ultramafic rocks, namely, harzburgite, dunite, pyroxenite and gabbro. Substantial magnesite deposits are hosted by serpentinized harzburgite. The
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