TY - RPRT TI - Conodont color alteration index (CAI) map and conodont-based age determinations for the Winchester 30' x 60' Quadrangle and adjacent area, Virginia, West Virginia, and Maryland AU - Anita G. Harris AU - Nancy R. Stamm AU - David J. Weary AU - John E. Repetski AU - Robert G. Stamm AU - Ronald A. Parker PY - 1994 DO - 10.3133/mf2239 UR - https://pubs.usgs.gov/publication/mf2239 ID - mf2239 ER -