TY - RPRT TI - Petrology, isotope characteristics, and K-Ar ages of the Maranhão, northern Brazil, Mesozoic basalt province AU - R.V. Fodor AU - A.N. Sial AU - S.B. Mukasa AU - E.H. McKee PY - 1990 DO - 10.1007/bf00306664 UR - https://pubs.usgs.gov/publication/70016225 ID - 70016225 ER -