Characterisation, Sources and Flux of Unmelted Micrometeorites on Earth During the Last ~50,000 Years.
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ABSTRACT:
SUBMITTER: Prasad MS
PROVIDER: S-EPMC5995856 | biostudies-literature | 2018 Jun
REPOSITORIES: biostudies-literature
Publications
Characterisation, Sources and Flux of Unmelted Micrometeorites on Earth During the Last ~50,000 Years.
Prasad M Shyam MS Rudraswami N G NG de Araujo Agnelo Alexandre AA Khedekar V D VD
Scientific reports 20180611 1
Dust dominates extraterrestrial flux on the earth (30,000 tonnes/yr), however only ~5% of the cosmic dust survives atmospheric entry which is basically in two forms: melted and unmelted. Melted micrometeorites undergo transformational changes due to heating during atmospheric entry which obliterate evidences regarding their precursors. Unmelted micrometeorites (UMM) survive atmospheric entry with minimal alteration, they provide direct evidence for their parent bodies. Recent investigations unra ...[more]
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