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Petrology and tectonic history of the Green Bay Schist, Portmore, St. Catherine Parish, Jamaica

There are three occurrences of medium- to high-grade metamorphic rocks in Jamaica: amphibolite facies Westphalia Schist, blueschist/greenschist facies Mt. Hibernia Schist, and the hitherto poorly characterized amphibolite facies Green Bay Schist. New trace element data and thermodynamic calculations show that Green Bay Schist is closely related to Westphalia Schist. The protoliths for both are ver

Authors
Richard N. Abbott, David P. West, Betsy R. Bandy, Ryan J. McAleer
By
Florence Bascom Geoscience Center, Bascom ARgon Dating (BARD) Laboratory

Geology of the Mount Rogers area, revisited: Evidence of Neoproterozoic continental rifting, glaciation, and the opening and closing of the Iapetus ocean, Blue Ridge, VA–NC–TN

Recent field and geochronological studies in eight 7.5-minute quadrangles near Mount Rogers in Virginia, North Carolina and Tennessee recognize important stratigraphic and structural relationships for the Neoproterozoic Mount Rogers and Konnarock formations, the northeast end of the Mountain City window, the separation of Mesoproterozoic rocks of the Blue Ridge into three age groups, and timing an

Authors
Arthur J. Merschat, C. Scott Southworth, Christopher S. Holm-Denoma, Ryan J. McAleer
By
Florence Bascom Geoscience Center, Bascom ARgon Dating (BARD) Laboratory