Middle Ordovician disorganized arc rifting in the peri-Laurentian Newfoundland Appalachians: implications for evolution of intra-oceanic arc systems

• Main Authors: A. Zagorevski, V. J. McNicoll, N. Rogers, G. H. van Hees
• Format: Dataset
• Language: unknown
• Published: 2016
• Subjects: Geology; Annieopsquotch Accretionary Tract; tectonostratigraphic units; Mary March Brook group; Red Indian Lake Group; Annieopsquotch Accretionary Tract submarine arc system; tholeiitic island arc; arc rifting; DM; Indian; Tonga; Newfoundland
• Online Access: https://doi.org/10.6084/m9.figshare.3454055.v1; https://figshare.com/articles/Middle_Ordovician_disorganized_arc_rifting_in_the_peri-Laurentian_Newfoundland_Appalachians_implications_for_evolution_of___intra-oceanic_arc_systems/3454055

The Annieopsquotch Accretionary Tract comprises a tectonic collage of Ordovician peri-Laurentian terranes that formed during closure of Iapetus Ocean and imbricated beneath the composite margin of Laurentia. New zircon U–Pb geochronological data ( n = 8) for felsic volcanic rocks representing three...