Astronomy:Shelter Island meteorite

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Shelter Island meteorite
Shelter Island meteorite cropped, sharpened and straightened.jpg
Shelter Island meteorite viewed by the Opportunity rover (October 3, 2009).
TypeIron
Parent bodyUnknown
CompositionKamacite, taenite[1]
Weathering gradeLarge-scale, cavernous weathering[1]
CountryMars
RegionMeridiani Planum
CoordinatesCoordinates: 02°07′04″S 05°31′41.30″W / 2.11778°S 5.528139°W / -2.11778; -5.528139[2]
Observed fallNo
Fall datePossibly late Noachian
Found dateDecember 1, 2009
Strewn fieldPossibly[3]
391243main-MarsRover-ShelterIslandMeteorite-20091002-crop.jpg
Shelter Island meteorite - close-up (October 1, 2009).

Shelter Island meteorite was found on Mars by the Opportunity rover on October 1, 2009. It is about 27 centimetres (11 in) long.[4]

History

Shelter Island was the second of three iron meteorites encountered by the rover on Meridiani Planum within a few hundred meters, the others being Block Island and Mackinac Island.[1]

Shelter Island may have fallen on Mars in the late Noachian period and is extensively weathered.[1][3]

See also


References

  1. 1.0 1.1 1.2 1.3 Ashley, J. W. (July 2011). "Evidence for mechanical and chemical alteration of iron-nickel meteorites on Mars: Process insights for Meridiani Planum". Journal of Geophysical Research: Planets 116 (E7): E00F20. doi:10.1029/2010JE003672. Bibcode2011JGRE..116.0F20A. 
  2. Google Mars
  3. 3.0 3.1 Beech, Martin; Ian M. Coulson (2010). "The making of Martian meteorite Block Island". Monthly Notices of the Royal Astronomical Society 404 (3): 1457. doi:10.1111/j.1365-2966.2010.16350.x. Bibcode2010MNRAS.404.1457B. http://hyperion2.cc.uregina.ca/~astro/block.pdf. Retrieved January 5, 2013. 
  4. "Opportunity Finds Another Meteorite". NASA. http://www.nasa.gov/mission_pages/mer/multimedia/mer20091002.html.