TY - RPRT TI - Elemental, isotopic, and geochronological variability in Mogollon-Datil volcanic province archaeological obsidian, southwestern USA: Solving issues of intersource discrimination AU - M. Steven Shackley AU - Leah E. Morgan AU - Douglas Pyle PY - 2017 DO - 10.1002/gea.21672 UR - https://pubs.usgs.gov/publication/70195095 ID - 70195095 ER -