How many sedimentary basins are there in India?
26 sedimentary basins
India has 26 sedimentary basins covering an area of 3.14 million square kilometres.
What is meant by sedimentary basin?
Sedimentary basins are the primary locations on the continents where sufficient subsidence exists for long-term preservation of continental sediments, and in fact may be the only locations where significant long-term preservation is possible. From: Geomorphology, 2015.
Where are sedimentary basins found?
Sedimentary basins occur in diverse geological settings usually associated with plate tectonic activity. Tectonic processes that lead to subsidence include the thinning of underlying crust; sedimentary, volcanic, or tectonic loading; or changes in the thickness or density of adjacent lithosphere.
Which of the following basins belongs to India?
The major river basin is the Ganga-Brahmaputra-Meghna , which is the largest with catchment area of about 11.0 lakh km2 (more than 43% of the catchment area of all the major rivers in the country). The other major river basins with catchment area more than 1.0 lakh km2 are Indus, Mahanadi, Godavari and Krishna.
Where is Krishna Godavari basin?
Andhra Pradesh
Krishna Godavari (KG) Basin is spread across 50,000 sq km in the Krishna River and Godavari river basins near the coast of Andhra Pradesh. The site Dhirubhai-6 (D6) is where Reliance Industries discovered the biggest gas reserves in India.
Where are sedimentary rocks found in India?
The spread of Sedimentary Rocks in India Alluvial deposits in the Indo-Gangetic plain and coastal plains is of sedimentary accumulation. These deposits contain loam and clay. Different varieties of sandstone are spread over Madhya Pradesh, eastern Rajasthan, parts of Himalayas, Andhra Pradesh, Bihar and Orissa.
What is the largest sedimentary basin on earth?
The deepest basins (>15 km) are found in the southern Caspian Sea and in the western Gulf of Mexico. Sedimentary rocks are important because they are the “tape recorder” of past climate, sea-level and environmental change. They are also the world’s largest repositories of oil and gas.
What are the types of sedimentary basins?
| Types of sedimentary basins | |
|---|---|
| Rift-related basins | |
| Basin type | Geological Origin |
| Rift basin | The down-dropped basin formed during rifting because of stretching and thinning of the continental crust |
| Passive margin basin | Subsidence along a passive margin, mostly due to long-term accumulation of sediments on the continental shelf |
Which is largest basin in India?
The Ganga basin
The Ganga basin is the largest. Narmada river is the fifth largest river and is also the largest west flowing river. Narmada basin has been shown at index 15 in the basin map.
Where is KG-D6 block?
Krishna Godavari Basin
The KG-D6 block is located in the Krishna Godavari Basin, off the coast of Kakinada, India. The offshore block is situated approximately 40-60km southeast of Kakinada in the Bay of Bengal.
What is KG PG basin?
Krishna Godavari Basin is a peri-cratonic passive margin basin in India. It is spread across more than 50,000 square kilometres in the Krishna River and Godavari River basins in Andhra Pradesh.
Concerned efforts are continuously being done to reduce the unexplored area further. These 26 Indian sedimentary basins have been divided into three categories based on their degree of prospectivity. Category II : Basins with contingent resources to be developed and produced
Where is the Bombay offshore basin in India?
BOMBAY OFFSHORE BASIN The Bombay offshore region of the western continental shelf of India forms an important hydrocarbon bearing province and comprises sediments of Cenozoic age. This basin is extending from Saurashtra Coast in the North to Vengurla arch near Goa in the South.
What kind of sediments are in the Panna basin?
Panna Formation is spread over the entire Bombay Offshore Basin excepting the Paleohighs. It is represented by sandstone, claystone, shale andn coal bed at the middle. It overlies Deccan Trap or Archean basement and is overlain unconformably by Bassein/Belapur/Pipavav Formation which coincides with H-4 seismic marker.
Where are the exposed sediments of Bengal Basin?
The Geosynclinal sediments are exposed in South of Naga thrust. The Dauki Fault separates the sediments of Bengal Basin from exposed shelf sediments leaving platform closed by the convergence of Himalayas and Naga Hills in the North-East in the area of Minshmi Hills of Arunachal Pradesh.