Lithology, tectonostratigraphy, ans paleogeography of the Vavenby area, Eagle Bay Assemblage, south-central British Columbia, a possible constraint for the timing of the rifting of Laurentia Academic Article uri icon

abstract

  • New 1:20 000 scale mapping within the pericratonic rocks of the Eagle Bay Assemblage near Vavenby, south- central British Columbia, has revealed a stratigraphic transition from continental slope siliciclastic rocks of Latest Neoproterozoic or Early Cambrian age to a sequence dominated by thick successions of Early Cambrian mafic vol- canic and volcaniclastic rocks with an associated archaeocyathid-bearing carbonate platform. These rocks are overturned and structurally emplaced above the Devonian and Mississippian portion of the Eagle Bay Assemblage. Overall, this section is interpreted as recording the transition from deeper water, turbiditic and pelagicsedimentation to a period of tectonism and creation of a shallow-water to subaerial, mafic volcanic edifice. These Latest (?)Neoproterozoic and Early Cambrian pericratonic rocks within the Eagle Bay Assemblage record a period of Early Cambrian tectonism and mafic volcanism, supporting recent models of continental separation in this region at that time.

published proceedings

  • Geological Survey of Canada, Current Research

author list (cited authors)

  • Hughes, N. D., Paradis, S., Sears, J. W., & Pope, M

complete list of authors

  • Hughes, ND||Paradis, S||Sears, JW||Pope, M

publication date

  • January 1, 2001 11:11 AM