Petrology of Unique Impact Melt Rock, Ramsdorf (L Chondrite)

Details Petrology of Unique Impact Melt Rock, Ramsdorf (L Chondrite) Petrology of Unique Impact Melt Rock, Ramsdorf (L Chondrite)

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1467y&link_type=abstract

Lunar and Planetary Science, volume 27, page 1467

Mathematics

Logic

2

Chondrites: L, History: Thermal, Rocks: Impact Melt, Shock Metamorphism

Scientific paper

We have studied a unique impact melt rock, the Ramsdorf L chondrite. We have discovered that Ramsdorf contains not only clast-poor impact melt but also a chondritic portion (>60 g) with prominent chondritic texture. Detailed mineralogical studies suggest that most (~90 vol%) of the chondritic portion was melted by shock. Ramsdorf was produced by melting of a type 3-4 chondrite and crystallization in situ. The associated shock pressure could have been ~75-90 GPa, with a post shock temperature of ~1400 degrees-1600 degrees C. The shock stage of this rock may be the highest among ordinary chondrites and other rocks, namely shock stage S6+.

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