Journal of Petroleum Geology, Vol.14,
No.4, pp. 445-458, 1991
©Copyright 2000 Scientific Press,
AN ISOLATED CARBONATE BANK
IN THE ZECHSTEIN MAIN DOLOMITE BASIN, WESTERN POLAND
T. M. Peryt* and K. Dyjaczynski**
* Panstwowy Instytut Geologiczny,
ul. Rakowiecka 4, 00-975 Warszawa, Poland
** Zaklad Poszukiwan Nafty i Gazu.
ul. Westerplatte 15, 65-034 Zielona Gora, Poland.
Isolated carbonate banks in starved basins
are very attractive targets for hydrocarbon prospecting. In the
Zechstein (Late Permian) Main Dolomite (Ca2) Basin of Western
Poland. six such banks or isolated platforms have been penetrated
by wells, and gas and/or oil has been found in all of them. The
largest is the Chartow Platform, which lies a few tens of
kilometres from the edge of the carbonate shelf; and shows well
defined facies zonation. Three shallowing-upward cycles may be
distinguished in the bank-edge sands, while the central
(lagoonal) region and lower slope show a single deepening-upward
sequence. Local rapid subsidence, usually balanced by the rate of
deposition, is inferred for the edge of the Chartow Platform,
this subsidence was not balanced in other zones.