Dhala impact structure
{{Short description|Impact structure in India}}
{{use dmy dates|date=January 2025}}
{{Infobox terrestrial impact site
| name = Dhala impact structure
| other_name = tapkeshwar pahadi
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| map = India
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| confidence = Confirmed
| diameter = {{convert|3-11|km}}
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| age = 2.44 and 2.24 Ga
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| country = India
| state = Madhya Pradesh
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| district = Shivpuri district
| municipality = Bhonti village
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The Dhala impact structure (N25°17'59.7" and E78°8'3.1") is an impact structure formed by an asteroid impact.{{cite Earth Impact DB | name = Dhala| linkname = dhala| accessdate = 2016-04-26}} It is situated near Bhonti village in Pichhore block of Shivpuri district of Madhya Pradesh state in India. It is the largest impact structure in India, and between the Mediterranean and Southeast Asia. The diameter of the structure is estimated at {{convert|3|km}},{{Cite web|url=https://www.lpi.usra.edu/meteor/metbull.php?code=49717|title=Meteoritical Bulletin: Entry for Dhala|website=www.lpi.usra.edu|access-date=2020-01-24}} while other sources estimate its diameter to be 11 km diameter. It is the second such structure found in India, after Lonar lake.{{cite news|last1=PTI|title=Indian geologist discovers oldest impact structure in India|url=http://www.livemint.com/Industry/uMSLhf2ryC7wyH0qbJtBrI/Indian-geologist-discovers-oldest-impact-structure-in-India.html|accessdate=26 July 2015|publisher=Live Mint, News|date=11 January 2009}}
It is 200 km east of the Ramgarh crater.
Impact date
It is estimated that the impact occurred between 2.44 and 2.24 Ga.{{cite journal |doi=10.1016/j.gr.2017.10.006 |title=Anatomy of impactites and shocked zircon grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India |journal=Gondwana Research |volume=54 |pages=81–101 |year=2018 |last1=Li |first1=Shan-Shan |last2=Keerthy |first2=S |last3=Santosh |first3=M |last4=Singh |first4=S.P |last5=Deering |first5=C.D |last6=Satyanarayanan |first6=M |last7=Praveen |first7=M.N |last8=Aneeshkumar |first8=V |last9=Indu |first9=G.K |last10=Anilkumar |first10=Y |last11=Sajinkumar |first11=K.S |bibcode=2018GondR..54...81L }} Basement rocks are predominantly composed of granitoids.
Largest in India
This impact structure on the Bundelkhand craton is the largest in India.{{cite conference |bibcode=2008LPICo1423.3041P |title=Dhala - A New, Complex, Paleoproterozoic Impact Structure in Central India |url=https://www.lpi.usra.edu/meetings/lmi2008/pdf/3041.pdf |last1=Pati |first1=J. K. |last2=Reimold |first2=W. U. |last3=Koeberl |first3=C. |last4=Singh |first4=H. K. |last5=Pati |first5=P. |year=2008 |conference=Large Meteorite Impacts and Planetary Evolution IV }}
See also
{{Portal|Astronomy|India}}
; Impact craters in India
- Lonar crater at Lonar in Buldhana district of Maharashtra
- Luna crater at Kutch district of Gujarat
- Shiva crater, a proposed undersea crater west of India
; Other related topics
References
{{reflist}}
Further reading
- {{cite journal |title=Reconstructing the dimension of Dhala Impact Crater, Central India,through integrated geographic information system and geological records |journal=Planetary and Space Science |year=2019 |last1=Keerthy |first1=S |last2=Vishnu |first2=CL |last3=Li |first3=SS |last4=Reshma |first4=N |last5=Praveen |first5=MN |last6=Oommen |first6=T |last7=Singh |first7=SP |last8=Sajinkumar |first8=KS|volume=177 |page=104691 |doi = 10.1016/j.pss.2019.07.006|bibcode=2019P&SS..17704691K |s2cid=199113888 }}
- {{cite journal |title=Anatomy of impactites and shocked zircon grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India |journal=Gondwana Research |volume = 54|pages = 81–101|year=2018 |last1=Li |first1=SS |last2=Keerthy |first2=SS |last3=Santosh |first3=M |last4=Singh |first4=SP |last5=Deering |first5=CD |last6=Satyanarayanan |first6=M |last7=Praveen |first7=MN |last8=Aneeshkumar |first8=V|last9=Indu |first9=GK |last10=Anilkumar |first10=Y |last11=Sajinkumar |first11=KS|doi = 10.1016/j.gr.2017.10.006|bibcode = 2018GondR..54...81L}}
- {{cite journal |doi=10.1111/j.1945-5100.2008.tb00704.x |title=The Dhala structure, Bundelkhand craton, Central India-Eroded remnant of a large Paleoproterozoic impact structure |journal=Meteoritics & Planetary Science |volume=43 |issue=8 |pages=1383–1398 |year=2008 |last1=Pati |first1=Jayanta K |last2=Reimold |first2=Wolf Uwe |last3=Koeberl |first3=Christian |last4=Pati |first4=Puniti |bibcode=2008M&PS...43.1383P |doi-access=free }}
External links
- [https://www.google.com/maps/place/Dhala+crater/@25.297804,78.134036,4698m/data=!3m2!1e3!4b1!4m5!3m4!1s0x39775a38494f785f:0x6616883cb9868b0d!8m2!3d25.2974931!4d78.1421905 Google map link]
{{coord|25|18|N|78|8|E|display=title}}
{{Impact cratering on Earth}}
Category:Impact craters of India