Raman study of carbonaceous matter and anthraxolite in rocks from the Sudbury, Ontario, impact structure

Details Raman study of carbonaceous matter and anthraxolite in rocks from the Sudbury, Ontario, impact structure Raman study of carbonaceous matter and anthraxolite in rocks from the Sudbury, Ontario, impact structure

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28..563h&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 563.

Physics

Raman Spectra, Rocks, Carbonaceous Materials, Hypervelocity Impact, Crystallization, Earth Surface, Canada, Graphite

Scientific paper

The 1.85 My old Sudbury structure represents the partially eroded remnant of a 200-300 km diameter multiring impact basin. In its center, the heterolithic impact breccias of the Black Member of the Onaping Formation and the mudstones of the Onwatin Formation contain up to about 4 percent finely disseminated carbonaceous matter of unknown provenance. A suggestion that it had formed by the reduction of methane during fumarolic activity was considered unlikely. Anthraxolite occurs as two veins up to 1.5 m wide in the Onwatin Formation. Its emplacement by tectonometamorphic remobilization has been suggested. Raman spectroscopy alone is unlikely to resolve the riddle of the provenance of the carbonaceous matter. However, it might be a useful first step in the right direction. A detailed investigation of the carbonaceous matter is important in the context of the reported discovery of fullerenes in the Onaping Formation and will also lead to a better understanding of planetary impact processes.

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