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Minerals 2015, 5(2), 221-246; https://doi.org/10.3390/min5020221

Approaches to the Low Grade Metamorphic History of the Karakaya Complex by Chlorite Mineralogy and Geochemistry

1
Department of Geological Engineering, Batman University, 72100 Batman, Turkey
2
Department of Geological Engineering, Cumhuriyet University, 58140 Sivas, Turkey
3
Department of Geological Engineering, Pamukkale University, 20070 Denizli, Turkey
*
Author to whom correspondence should be addressed.
Academic Editor: Antonio Simonetti
Received: 18 November 2014 / Revised: 8 April 2015 / Accepted: 9 April 2015 / Published: 16 April 2015
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Abstract

In this study, chlorite is used to investigate the diagenetic-metamorphic evolution and accurate geological history of the different units belonging to the Karakaya complex, Turkey. Primary and secondary chlorite minerals in the very low-grade metamorphic rocks display interference colors of blue and brown and an appearance of optical isotropy. Chlorites are present in the matrix, pores, and/or rocks units as platy/flaky and partly radial forms. X-ray diffraction (XRD) data indicate that Mg-Fe chlorites with entirely IIb polytype (trioctahedral) exhibit a variety of compositions, such as brunsvigite-diabantite-chamosite. The major element contents and structural formulas of chlorite also suggest these were derived from both felsic and metabasic source rocks. Trace and rare earth element (REE) concentrations of chlorites increase with increasing grade of metamorphism, and these geochemical changes can be related to the tectonic structures, formational mechanics, and environments present during their generation. View Full-Text
Keywords: petrography; XRD; major and trace elements; geological evolution petrography; XRD; major and trace elements; geological evolution
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Tetiker, S.; Yalçın, H.; Bozkaya, Ö. Approaches to the Low Grade Metamorphic History of the Karakaya Complex by Chlorite Mineralogy and Geochemistry. Minerals 2015, 5, 221-246.

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