Premium
Multiple fluvial reworking of impact ejecta—A case study from the Ries crater, southern Germany
Author(s) -
BUCHNER Elmar,
SCHMIEDER Martin
Publication year - 2009
Publication title -
meteoritics and planetary science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.09
H-Index - 100
eISSN - 1945-5100
pISSN - 1086-9379
DOI - 10.1111/j.1945-5100.2009.tb00787.x
Subject(s) - ejecta , fluvial , impact crater , geology , impact structure , feldspar , glacier , geochemistry , quartz , bedrock , geomorphology , paleontology , astrobiology , physics , structural basin , quantum mechanics , supernova
— Impact ejecta eroded and transported by gravity flows, tsunamis, or glaciers have been reported from a number of impact structures on Earth. Impact ejecta reworked by fluvial processes, however, are sparsely mentioned in the literature. This suggests that shocked mineral grains and impact glasses are unstable when eroded and transported in a fluvial system. As a case study, we here present a report of impact ejecta affected by multiple fluvial reworking including rounded quartz grains with planar deformation features and diaplectic quartz and feldspar glass in pebbles of fluvial sandstones from the “Monheimer Höhensande” ?10 km east of the Ries crater in southern Germany.