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Allan Hills 84001 (ALH84001 [1]) is a fragment of a Martian meteorite that was found in the Allan Hills in Antarctica on December 27, 1984, by a team of American meteorite hunters from the ANSMET project. Like other members of the shergottite–nakhlite–chassignite (SNC) group of meteorites, ALH84001 is thought to have originated on Mars ...
In 1996, the Martian meteorite ALH84001, a specimen that is much older than the majority of Martian meteorites that have been recovered so far, received considerable attention when a group of NASA scientists led by David S. McKay reported microscopic features and geochemical anomalies that they considered to be best explained by the rock having ...
The main fragment of meteorite NWA 11119, the oldest dated whole rock. One of the oldest Martian meteorites found on Earth, Allan Hills 84001 has been measured to have crystallized from molten rock 4.091 billion years ago.
For example, ALH84001 was collected in the Allan Hills region in 1984. The 2004–2005 ANSMET expedition consisted of 12 members and collectively they returned 1,230 meteorites. These included over 130 kilograms (290 lb) of pallasite meteorites, one of which is the largest yet found in Antarctica at over 30 kilograms (66 lb).
This is an incomplete list of Martian meteorites i.e. meteorites that have been identified as having originated from Mars.. As of September 2020, 277 meteorites had been classified as Martian, less than half a percent of the 72,000 meteorites that have been classified. [1]
ALH84001, a Martian meteorite; Atypical lobular hyperplasia, a breast disease This page was last edited on 25 September 2023, at 11:43 (UTC). Text is available ...
Structures found in the ALH84001 meteorite are similar to the structures found in nanobes Not to be confused with Nanobacteria or Ultramicrobacteria . A nanobe ( / ˈ n æ n oʊ b , ˈ n eɪ n oʊ b / ) [ 1 ] is a tiny filamental structure first found in some rocks and sediments .
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