TY - RPRT TI - Early Proterozoic activity on Archean faults in the western Superior province - evidence from pseudotachylite AU - Z. E. Peterman AU - W. Day PY - 1989 DO - 10.1130/0016-7606(1990)102<1623:epditw>2.3.co;2 UR - https://pubs.usgs.gov/publication/70015426 ID - 70015426 ER -