TY - RPRT TI - Paleomagnetism of the Middle Proterozoic Electra Lake Gabbro, Needle Mountains, southwestern Colorado AU - S. S. Harlan AU - J. W. Geissman PY - 1998 DO - 10.1029/98jb01350 UR - https://pubs.usgs.gov/publication/70020759 ID - 70020759 ER -