REFLEKSYJNOŚĆ MATERII WITRYNITOPODOBNEJ JAKO WSKAŹNIK DOJRZAŁOŚCI TERMICZNEJ CECHSZTYŃSKIEGO ŁUPKU MIEDZIONOŚNEGO

Abstract

REFLECTANCE OF VITRINITE-LIKE MATTER AS A THERMAL MATURITY INDEX FOR THE ZECHSTEIN KUPFERSCHIEFERAbstract. The Zechstein Kupferschiefer is significantly enriched in organic matter. Liptinite macerals are the most abundant organic components, in which bituminite prevails. However, vitrinite-like matter is noteworthy in both transitional and oxidized facies, replacing bituminite there. Vitrinite and inertinite are rather minor organic constituents of this horizon. Because of the scarce occurrence of vitrinite in the thermally altered Kupferschiefer, the reflectance was measured on the vitrinite-like matter. The relationships between the reflectance parameters of different macerals with inereasing coalification were studied. Vitrinite-like matter evolves in a similar way to vitrinite during coalification. Its reflectance is lower (0.21-0.13%) than vitrinite Ro. Taking certain limitations into account, reflectance of vitrinite-like matter may be applied as a maturity parameter.