Initial Deposits in the Cordilleran Geosyncline: Evidence of a Late Precambrian (<850 m.y.) Continental Separation Stewart, John H. Abstract Publication: Geological Society of America Bulletin Pub Date: 1972 DOI: 10.1130/0016-7606(1972)83[1345:IDITCG]2.0.CO;2 Bibcode: 1972GSAB...83.1345S