A possible new impact structure near Lac de la Presqu'ile, Quebec, Canada

Details A possible new impact structure near Lac de la Presqu'ile, Quebec, Canada A possible new impact structure near Lac de la Presqu'ile, Quebec, Canada

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990metic..25..235h&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 25, Sept. 1990, p. 235, 236. Research supported by NSERC.

Computer Science

1

Impact Melts, Meteorite Craters, Meteoritic Composition, Shatter Cones, Basalt, Canada, Erosion, Geochronology

Scientific paper

Lac de la Presqu'ile is a sub-circular lake, about 7 km in diameter with a prominent central peninsula. The shape of this lake and the occurrence of shatter cones to the east suggest that an impact created a crater with an original diameter of at least 12 km (Tait, 1990). Deep erosion of the structure suggests that it was formed in the distant past, at least several hundred million years ago.

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