Some marine material, along with microcontinents and/or island arcs, was bent, crushed, sheared, and melted in the collision to form metamorphic rock of eastern Appalachian mountains and foothills.
(Some marine material, along with microcontinents and/or island arcs; was; bent, crushed, sheared, and melted in the collision)
Some marine material, along with microcontinents and/or island arcs
was
bent, crushed, sheared, and melted in the collision