Dhala crater

Dhala crater (N25°17'59.7" and E78°8'3.1"), a crater formed by impact of an asteroid, is situated in Shivpuri district, Madhya Pradesh India and it is second such crater found in India, after Lonar lake.^[1] The diameter of the structure is estimated at 11 km and basement rocks are predominantly composed of granitoids. It is estimated that the impact occurred between 1.6 and 2.5 Ga^[2] or about 2,500 million years ago.

Largest in India

Dhala crater is considered as largest crater in India as well as between Mediterranean and South East Asia and such craters are not found any where in China and Japan.^[1] ^[2] The crater is considered as a "large complex impact structure" with estimated diameter extending upto 25 k.m.^[3]

References

1 2 PTI (11 January 2009). "Indian geologist discovers oldest impact structure in India". Live Mint, News. Retrieved 26 July 2015.
1 2 Pati.K., J. (2008). "DHALA - A NEW, COMPLEX, PALEOPROTEROZOIC IMPACT STRUCTURE IN CENTRAL INDIA" (PDF). Large Meteorite Impacts and Planetary Evolution IV (2008). Retrieved 2008.
↑ Vishwas, S Kale (2014). Landscapes and Landforms of India. Springer. p. 229. ISBN 9789401780292. Retrieved 28 July 2015.

Coordinates: 25°18′N 78°8′E / 25.300°N 78.133°E / 25.300; 78.133

Impact cratering on Earth

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Confirmed ≥20 km diameter	Acraman Amelia Creek Araguainha Beaverhead Boltysh Carswell Charlevoix Chesapeake Bay Chicxulub Clearwater East & West Gosses Bluff Haughton Kamensk Kara Karakul Keurusselkä Lappajärvi Logancha Manicouagan Manson Mistastin Mjølnir Montagnais Morokweng Nördlinger Ries Obolon' Popigai Presqu'île Puchezh-Katunki Rochechouart Saint Martin Shoemaker Siljan Ring Slate Islands Steen River Strangways Sudbury Tookoonooka Tunnunik Vredefort Woodleigh Yarrabubba

Topics	Alvarez hypothesis Breccia Coesite Complex crater Cretaceous–Paleogene boundary Cryptoexplosion Ejecta blanket Impact crater Impact structure Impactite Late Heavy Bombardment Lechatelierite Meteorite Moldavite Ordovician meteor event Planar deformation features Shatter cone Shock metamorphism Shocked quartz Stishovite Suevite Tektite

Research	Baldwin, Ralph Belknap Barringer, Daniel Barringer Medal Chao, Edward C T Dietz, Robert S Hartmann, William K Melosh, H Jay Ryder, Graham Schultz, Peter H Shoemaker, Eugene Earth Impact Database Impact Field Studies Group Lunar and Planetary Institute Traces of Catastrophe

Dhala is the largest impact structure currently known in the region between the Mediterranean and southeast Asia.

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