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The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies ArchiMer
Bischoff, Addi; Alexander, Conel M. O'D; Barrat, Jean-alix; Burkhardt, Christoph; Busemann, Henner; Degering, Detlev; Di Rocco, Tommaso; Fischer, Meike; Fockenberg, Thomas; Foustoukos, Dionysis, I; Gattacceca, Jerome; Godinho, Jose R. A.; Harries, Dennis; Heinlein, Dieter; Hellmann, Jan L.; Hertkorn, Norbert; Holm, Anja; Jull, A. J. Timothy; Kerraouch, Imene; King, Ashley J.; Kleine, Thorsten; Koll, Dominik; Lachner, Johannes; Ludwig, Thomas; Merchel, Silke; Mertens, Cornelia A. K.; Morino, Precillia; Neumann, Wladimir; Pack, Andreas; Patzek, Markus; Pavetich, Stefan; Reitze, Maximilian P.; Rufenacht, Miriam; Rugel, Georg; Schmidt, Charlotte; Schmitt-kopplin, Philippe; Schonbachler, Maria; Trieloff, Mario; Wallner, Anton; Wimmer, Karl; Woelfer, Elias.
On September 12, 2019 at 12:49:48 (UT) a bolide was observed by hundreds of eye-witnesses from the Netherlands, Germany, Belgium, Denmark and the UK. One day later a small meteorite stone was found by accident in Flensburg. The presence of short-lived cosmogenic radionuclides with half-lives as short as 16 days proves the recent exposure of the found object to cosmic rays in space linking it clearly to the bolide event. An exceptionally short exposure time of similar to 5000 years was determined. The 24.5 g stone has a fresh black fusion crust, a low density of <2 g/cm(3), and a magnetic susceptibility of log chi = 4.35 (chi in 10(-9) m(3)/kg). The rock consists of relict chondrules and clusters of sulfide and magnetite grains set in a fine-grained...
Tipo: Text Palavras-chave: C1 chondrite; Carbonaceous chondrite; Aqueous alteration; Carbonates; Early solar system; Oldest carbonates in solar system; Unique chondrite; Ungrouped C chondrite.
Ano: 2021 URL:
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