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Santa Marta crater

Coordinates: 10°10′S 45°15′W / 10.167°S 45.250°W / -10.167; -45.250
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Santa Marta crater
Santa Marta crater is located in Brazil
Santa Marta crater
Location of the crater in Brazil
Impact crater/structure
ConfidenceConfirmed
Diameter10 km (6.2 mi)
Age~66-100 Ma
Late Cretaceous
ExposedYes
DrilledNo
Location
LocationParnaíba Basin
Coordinates10°10′S 45°15′W / 10.167°S 45.250°W / -10.167; -45.250
CountryBrazil
StatePiauí

Santa Marta crater is a newly confirmed impact crater in Piauí State, northeastern Brazil.[1] It is 10 kilometres (6.2 mi) in diameter and it is estimated to have formed between 100 and 66 Ma, during the Late Cretaceous.

Description

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Its impact origin was first proposed by S. Master and J. Heymann in 2000 based primarily on satellite remote sensing data[2] and was confirmed more than a decade later after conclusive evidence of shock metamorphism such as breccia and shatter cones were found.[3]

See also

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References

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  1. ^ "Santa Marta". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2017-10-09.
  2. ^ Master, S.; Heymann, J (2000). A Possible New Impact Structure near Gilbués in Piauí Province, Northeastern Brazil, Meteoritics & Planetary Science, vol. 35, Supplement, p.A105
  3. ^ A. P. Crósta and M. A. Vasconcelos (2013). Confirmation Of The Impact Origin Of The Santa Marta Crater, Brazil, 76th Annual Meteoritical Society Meeting