TY - RPRT TI - Diagenetic alteration of impact spherules in the Neoarchean Monteville layer, South Africa AU - I. Kohl AU - B.M. Simonson AU - M. Berke PY - 2006 DO - 10.1130/2006.2405(04) UR - https://pubs.usgs.gov/publication/70035447 ID - 70035447 ER -