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Block Island meteorite








Block Island meteorite


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Block Island meteorite

376060main PIA12161 full straightened and sharpened.jpg
Type
Iron
Parent body
Unknown
Composition
Nickel, iron, Kamacite, taenite[1][2]
Weathering grade
Large-scale, cavernous weathering[2]
Country
Mars
Region
Meridiani Planum
Coordinates
02°07′00.85″S 05°31′02.85″W / 2.1169028°S 5.5174583°W / -2.1169028; -5.5174583Coordinates: 02°07′00.85″S 05°31′02.85″W / 2.1169028°S 5.5174583°W / -2.1169028; -5.5174583[3]
Observed fall
No
Fall date
Possibly late Noachian
Found date
July 17, 2009[4]
TKW
>0.5 short tons (0.45 t)[5]
Strewn field
Possibly[6]

Block Island.jpg
Block Island in close up.


Commons pageRelated media on Wikimedia Commons

Block Island meteorite was found on Mars by the Opportunity rover on July 17, 2009. It is about 67 centimetres (26 in) across.[1]



History[edit]


Block Island was the first of three iron meteorites encountered by the rover on Meridiani Planum within a few hundred meters, the others being Shelter Island (the second meteorite found), and Mackinac Island (the third one found).[2]


No strong evidence exists concerning when Block Island may have fallen on Mars, though atmospheric conditions would have favored its arrival in the late Noachian period. Block Island may be extensively weathered,[2][6] or conversely the features covering it may simply be the regmaglypts formed by its passage through the atmosphere. Contrary to some claims, Block Island is not too large for the modern martian atmosphere to produce, though the denser the atmosphere the more effectively it would produce Block Island mass meteorites.[7]



See also[edit]



  • Atmospheric reentry

  • Bounce Rock

  • Glossary of meteoritics

  • Heat Shield Rock

  • List of Martian meteorites

  • List of meteorites on Mars

  • Mackinac Island meteorite

  • Oileán Ruaidh meteorite

  • Shelter Island meteorite



References[edit]




  1. ^ ab Nemiroff, R.; Bonnell, J., eds. (13 August 2009). "Block Island Meteorite on Mars". Astronomy Picture of the Day. NASA. Retrieved January 5, 2013. 


  2. ^ abcd Ashley, J. W.; et al. (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). Bibcode:2011JGRE..116.0F20A. doi:10.1029/2010JE003672. Retrieved January 5, 2013. 


  3. ^ Google Mars


  4. ^ Atkinson, Nancy. "Opportunity Spies Unusual Rock — Large Meteorite?". Universe Today. Retrieved January 5, 2013. 


  5. ^ Staff (September 14, 2010). "Mars' Odd 'Block Island' Meteorite - A Clue to an Ancient Atmosphere". Daily Galaxy. Retrieved January 5, 2013. 


  6. ^ ab Beech, Martin; Ian M. Coulson (2010). "The making of Martian meteorite Block Island" (PDF). Monthly Notices of the Royal Astronomical Society. 404. Bibcode:2010MNRAS.404.1457B. doi:10.1111/j.1365-2966.2010.16350.x. Archived from the original (PDF) on June 20, 2013. Retrieved January 5, 2013. 


  7. ^ Chappelow, J. E.; Golombek M.P. (July 2011). "Event and conditions that produced the iron meteorite Block Island on Mars". Journal of Geophysical Research: Planets. 115 (E12). Bibcode:2010JGRE..115.0F07C. doi:10.1029/2010JE003666. 




















































Notable rocks on Mars

Adirondacksquare.jpg


PIA00819left-MarsRock-BarnacleBill.gif


PIA14762-MarsCuriosityRover-BathurstInletRock.jpg


MarsViking1Lander-BigJoeRock-19780211.jpg


Block Island.jpg


58606main image feature 167 jwfull.jpg


MarsCuriosityRover-CoronationRock-N165-20120817-crop.jpg


El Capitan sol27 pancam.jpg


Adirondack
(Spirit)

Barnacle Bill
(Sojourner)

Bathurst Inlet
(Curiosity)

Big Joe*
(Viking)

Block Island
(Opportunity) M

Bounce
(Opportunity)

Coronation
(Curiosity)

El Capitan
(Opportunity)

PIA17074-MarsOpportunityRover-EsperanceRock-20130223-fig1.jpg


PIA16187-MarsCuriosityRover-GoulburnRock-20120817-crop.jpg

PIA07269-Mars Rover Opportunity-Iron Meteorite.jpg


PIA09089-RA3-hirise-closeup annotated.png


PIA17062-MarsCuriosityRover-HottahRockOutcrop-20120915.jpg

PIA16192-MarsCuriosityRover-Target-JakeRock-20120927.jpg

PIA05482 modest.jpg


NASA Curiosity rover - Link to a Watery Past (692149main Williams-2pia16188-43).jpg


Esperance*
(Opportunity)

Goulburn
(Curiosity)

Heat Shield
(Opportunity) M

Home Plate
(Spirit)

Hottah
(Curiosity)

Jake Matijevic
(Curiosity)

Last Chance
(Opportunity)

Link
(Curiosity)

Mackinac Island.jpg

Mars rock Mimi by Spirit rover.jpg


PIA13418 - Oileán Ruaidh meteorite on Mars (false colour).jpg


Pot of gold upclose.jpg


PIA16452-MarsCuriosityRover-Rocknest3Rock-20121005.jpg


391243main-MarsRover-ShelterIslandMeteorite-20091002-crop.jpg


PIA16795-MarsCuriosityRover-TintinaRock-Context-20130119.jpg


NASA-MarsRock-Yogi-SuperRes.jpg


Mackinac Island
(Opportunity) M

Mimi*
(Spirit)

Oileán Ruaidh
(Opportunity) M

Pot of Gold
(Spirit)

Rocknest 3
(Curiosity)

Shelter Island
(Opportunity) M

Tintina
(Curiosity)

Yogi
(Sojourner)

The table above contains clickable linksNotes: * = linked article is about the mission that encountered this rock; M = Meteorite - ()












Retrieved from "https://en.wikipedia.org/w/index.php?title=Block_Island_meteorite&oldid=847848034"





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