TY - RPRT TI - U-Pb, Re-Os, and Ar/Ar geochronology of rare earth element (REE)-rich breccia pipes and associated host rocks from the Mesoproterozoic Pea Ridge Fe-REE-Au deposit, St. Francois Mountains, Missouri AU - John N. Aleinikoff AU - David Selby AU - John F. Slack AU - Warren C. Day AU - Renee M. Pillers AU - Michael A. Cosca AU - Cheryl Seeger AU - C. Mark Fanning AU - Iain Samson PY - 2016 DO - 10.2113/econgeo.111.8.1883 UR - https://pubs.usgs.gov/publication/70188829 ID - 70188829 ER -