ORGANIC GEOCHEMICAL PROPERTIES OF ADIYAMAN GOLBASI (SOUTH EAST OF TURKEY) COALS

11th International Multidisciplinary Scientific GeoConference SGEM2011, www.sgem.org, SGEM2011 Conference Proceedings/ ISSN 1314-2704, June 20-25, 2011, Vol. 1, 201-206 pp

ABSTRACT

This study was carried out in Golbasi (Adıyaman) region (SE of TURKEY), which
owns rare coal formations in the region. Chemical, petrographic analysis and organic
geochemical evaluations of the Tertiary aged coals were taken into consideration. Coal
quality investigation along with proximate (moisture, volatile matter, fixed carbon, ash)
and elemental analyses (C, H, O, S, N) were performed and revealed. The huminite
reflectance of organically abundant matter and coal levels were found to be between
0.30 and 0.52% which refer to lower maturity levels. This parameter is compatible with
fluorescence colors, calorific value (average original 2736 - dry 3727 Kcal/kg) and
average Tmax (422 oC). Organic matters of the investigated coals exhibit a low grade
transformation, due to a low lithostatic pressure on them. Golbasi coals show low grade
maturity and own sub-bituminous and lignite coalification ranks.
Rock Eval analysis results show that TYPE II/III and III kerogen, with average Tmax
values is 422 oC and corresponding to the immature and premature rank for
hydrocarbon generation. The coals are characterized with their abundance of huminite
maceral group and gelinite maceral, with small amount of inertinite and liptinite
macerals. The coals were deposited in a lake environment and were supposed to form as
a hypautochtonous way. Mineral matters of the Golbasi coals are clay, calcite and sulfur
minerals.

Keywords: Turkish Coals, Adıyaman Golbasi Coal, Organic Geochemistry, Organic
Petrography of Adiyaman coals, Tertiary Aged Coal of Turkey.