Journal of Petroleum Geology, Vol.5,
No.2, pp. 161-172, 1982
©Copyright 2000 Scientific Press,
Ltd.
GURI LIMESTONE, A NEW
HYDROCARBON RESERVOIR IN SOUTH IRAN
Mansour S. Kashfi*
* Minerals Dept., The Navajo
Nation, PO Box 146, Window Rock, Arizona 86515, USA.
Abstract
The Guri Limestone Member of the
Mishan Formation of Early to Middle Miocene age produces gas in
the SE portion of the Zagros geosyncline. The Mishan Formation,
which is predominantly marl in its type section near Khuzestan
Province, becomes more argillaceous with an increase in organic
content towards the SE where the sequence thickens. In the SE
portion of the Zagros geosyncline, the lower part of the Mishan
changes to a highly-resistant, fossiliferous limestone which is
called the Guri Limestone. This is of Late-Early Miocene age in
most of the SE Zagros and rises in stratigraphic position towards
the NW, becoming of Middle Miocene age in Khuzestan Province. The
Guri thickens considerably with massive reefal-type deposits
towards the eastern end of the Fars Province near the Oman high.
