TY - RPRT TI - Distribution of anomalously high K2O volcanic rocks in Arizona: metasomatism at the Picacho Peak detachment fault AU - W. E. Brooks PY - 1986 DO - 10.1130/0091-7613(1986)14<339:doahkv>2.0.co;2 UR - https://pubs.usgs.gov/publication/70014602 ID - 70014602 ER -