Authentication controversies and impactite petrography of the New Quebec Crater

Details Authentication controversies and impactite petrography of the New Quebec Crater Authentication controversies and impactite petrography of the New Quebec Crater

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992metic..27..585m&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 27, no. 5, p. 585-595.

Computer Science

5

Craters, Impact Melts, Meteoritic Damage, Petrology, Aerial Photography, Crystal Structure, Magnetite, Metamorphic Rocks, Quebec, Shock Loads

Scientific paper

The literature reports that led to the current acceptance of New Quebec Crater (Chubb Crater) as an authentic impact crater are reviewed, and it is noted that, for reasons that are not entirely clear, a meteoritic origin for the New Quebec Crater achieved wider acceptance at an earlier data than for the Lake Bosumtwi Crater, for which petrographic and chemical evidence is more abundant and compelling. The petrography of two impact melt samples from the New Quebec Crater was investigated, and new evidence is obtained on the degrees of shock metamorphism affecting the accessory minerals such as apatite, sphene, magnetite, and zircon.

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