TY - RPRT TI - Composition of the crust in the Grenville and Appalachian Provinces of North America inferred from VP/VS ratios AU - G. Musacchio AU - Walter D. Mooney AU - James H. Luetgert AU - Nikolas I. Christensen PY - 1997 DO - 10.1029/96jb03737 UR - https://pubs.usgs.gov/publication/70210154 ID - 70210154 ER -