Luna crater is an

impact crater An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters ...

at Luna village in

Bhuj Bhuj () is a Municipality and District Headquarters of Kutch District in the state of Gujarat, India. Etymology According to legend, Kutch was ruled by the Nāga chieftains in the past. Sagai, a queen of Sheshapattana, who was married to Kin ...

taluka of Kutch district of

Gujarat Gujarat (, ) is a state along the western coast of India. Its coastline of about is the longest in the country, most of which lies on the Kathiawar peninsula. Gujarat is the fifth-largest Indian state by area, covering some ; and the ninth ...

, India. The crater is located in a low-lying, soft, flat area and appears unconventional and deceptive when compared to other craters in India, which are usually found on hard, rocky surfaces.

Description

Rock fragments and glasslike materials found at the site indicate a meteorite impact, the date of which has tentatively been put at around 2000 BCE. The crater, located in the

Rann of Kutch The Rann of Kutch (alternately spelled as Kuchchh) is a large area of salt marshes that span the border between India and Pakistan. It is located in Gujarat (primarily the Kutch district), India, and in Sindh, Pakistan. It is divided into t ...

, is circular, with a diameter of , and its lowest point is only about above sea level. Crater is visibly a kilometre wide, but the satellite radar imagery shows it is spread over a five kilometres radius. Since it lacks the characteristics of a typical impact site, it is a unique site in the world, it has a very low depth to diameter ratio. A round lake of 1 km² in area and 2 meter in depth lies in the centre of crater, which remains dry during summers. Crater depression is covered with thick vegetation of thorny Acacia species (

Acacia nilotica ''Vachellia nilotica'', more commonly known as ''Acacia nilotica'', and by the vernacular names of gum arabic tree, babul, thorn mimosa, Egyptian acacia or thorny acacia, is a flowering tree in the family Fabaceae. It is native to Africa, the Mi ...

and

Prosopis juliflora ''Prosopis juliflora'' ( es, bayahonda blanca, Cuji Venezuela, Trupillo Colombia, Aippia Wayuunaiki and long-thorn kiawe in Hawaii) is a shrub or small tree in the family Fabaceae, a kind of mesquite. It is native to Mexico, South America and ...

). Rim of the crater, with up-turned beds and shutter cone, has no hard rocks. X-ray analysis of the materials adhering to meteorite fragments carried out by George Mathew, Earth Science Department, the

Indian Institute of Technology Bombay The Indian Institute of Technology Bombay (IIT Bombay or IITB) is a public research university and technical institute in Powai, Mumbai, Maharashtra, India. It is considered as one of the best engineering universities in India and is top ranke ...

revealed

stishovite Stishovite is an extremely hard, dense tetragonal form (Polymorphism (materials science), polymorph) of silicon dioxide. It is very rare on the Earth's surface; however, it may be a predominant form of silicon dioxide in the Earth, especially in ...

and

coesite Coesite is a form ( polymorph) of silicon dioxide Si O2 that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (), are applied to quartz. Coesite was first synthesized by Loring Coes Jr., a chemist at the N ...

, the high pressure polymorphs of

silica Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , most commonly found in nature as quartz and in various living organisms. In many parts of the world, silica is the major constituent of sand. Silica is one ...

, which confirms the impact origin of the crater. Among the various objects/products expected in an impact site, fragments appearing like metallic meteorites that are dark, heavy and magnetic with spherical cavities are found at the rim of the suspected crater, and glassy objects comparable to tektites have been recovered.R V Karan, R. V. Karanth, P. S. Thakker And M. S. Gadhavi, A Preliminary Report on The Possible Impact Crater of Kachchh, Current Science, Vol. 91, No. 7, 10 Oct 2006.

Religious significance

Luna Dham Temple lies in the north end of the crater.

More potential craters in Kutch

The satellite data indicates that there could be a few more craters within the Kutch, which are hidden by the subsequent denudational activities.

References

{{DEFAULTSORT:Luna Crater National Geological Monuments in India Landforms of Gujarat Impact craters of India

Description

Religious significance

More potential craters in Kutch

See also

References