Mathematics – Logic
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988metic..23..185r&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 23, Sept. 1988, p. 185-196. Research supported by DFG, Geological Survey of Canada, and Depar
Mathematics
Logic
36
Breccia, Impact Melts, Meteorite Craters, Mineralogy, Canada, Grain Size, Lithology, Meteoritic Composition, Stratigraphy
Scientific paper
This paper considers the 90-m-thick breccia layer that covers the central depression of the Haughton impact structure. Geological setting of the breccia is discussed, and the results on the modal composition, grain-size characteristics, and the degree of shock metamorphism for the grain-size ranges 10-50, 1-10, 0.03-1, and less than 0.03 mm are presented. The results of this study confirm earlier interpretation of this allochthonous polymict breccia as the erosional remnant of a breccia lens partially filling a complex impact crater with a central uplift. The data obtained in this study should help to set boundary conditions for the geometry of the excavation cavity and the transient crater.
Redeker H.-J.
Stoeffler Dieter
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