TY  - RPRT
TI  - Radiometric age (Late Ordovician) of the Quincy, Cape Ann, and Peabody Granites from eastern Massachusetts
AU  - Robert E. Zartman
AU  - Richard F. Marvin
PY  - 1971
DO  - 10.1130/0016-7606(1971)82[937:raloot]2.0.co;2
UR  - https://pubs.usgs.gov/publication/70227316
ID  - 70227316
ER  -