Print this pageAbstract: Genetic
potential of source menilitic shales in Carpathian Mountains: Comparison
of results of thermal decomposition tests and 
well
log data
BACZYNSKI, ANDRZEJ, MARIA CIECHANOWSKA, and JAN KUSMIEREK
The menilitic shales
are one of the most frequently encountered rocks in older sediments of
Oligocene age in Carpathian allochtonic units. Lithology and thickness
of these shales are known in numerous outcrops and wells. High genetic
potential of these rocks was well documented in recently published papers.
It is worth to note the varying maturity of these rocks as well as content
and type of kerogen. To evaluate the range of original TOC content, we
selected the one layer of menilitic shale characterized by the low degree
of maturity of the organic matter.
Results of thermal decomposition
tests carried out using Leco and Rock-Eval method (about 200 rock cuttings
and cores were used) enabled the precise evaluation of TOC content. Obtained
results were used to calibrate the date of sonic logs and electric logs
(CARBOLOG). The combined analysis of thermal decomposition date and well
log
date obtained using the GEO System allowed for the precise scaling
of rock maturity and to see how the lithology influence the maturity of
rocks.
AAPG Search and Discovery Article #90942©1997 AAPG International Conference and Exhibition, Vienna, Austria