Journal of Petroleum Geology, Vol.5,
No.1, pp. 51-75, 1982
©Copyright 2000 Scientific Press,
Ltd.
FACIES DISTRIBUTION AND
PETROLEUM GEOLOGY OF THE BOMBAY OFFSHORE BASIN, INDIA <./>
D. N. Basu*, A. Banerjee**, and D.
M. Tamhane**
*Institute of Petroleum
Exploration, ONGC, Dehradun, India.
**Oil & Natural Gas
Commission, Bombay Offshore Project, 16-E, Maker Towers, Cuffe
Parade, Bombay 400 005, India.
A modified version of the abstract was published at the
International Geological Congress held in Paris in June 1980.
Abstract
In view of the recent oil and gas
discoveries in the Bombay Offshore basin, its detailed geology
has been worked out in terms of its source rock and reservoir
potential. An agewise, layer-cake lithofacies analysis and five
depositional model maps from Paleocene to Middle Miocene age,
together with a number of paleotectonic sections has led to the
reconstruction of a generalized depositional model of the basin
as a whole. This proposed depositional model envisages the Bombay
Offshore basin as a shelf-to-basin carbonate model. During
Paleogene and Early Neogene time the clastic supply by the
proto-Narmada river from the NE resulted in delta progradation up
to the Dahanu depression, which was a region of pro-deltas and
lagoons with a considerable thickness of finer clastics. Beyond
the Dahanu depression, the Bombay High and
Bassein-Alibag-Ratnagiri shelf remained open carbonate platforms,
while the DCS area was the locale of shelf-edge carbonate
build-up.
