Geology of the Cobbs Arm Area, New World Island, Newfoundland 1966 W/ Maps Rare

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Geology of the Cobbs Arm area, New World Island, Newfoundland: Newfoundland and Labrador Mineral Resources Div.
Harris Ian McK Geology of the Cobbs Arm area New World Island Newfoundland Newfoundland and Labrador Mineral Resources Div Bull 37 38 p illus table geol map 1966
Ordovician rocks of the area are intermediate and basic volcanic flows massive crystalline limestone and black argillite Minor pyroclastics limestone and black argillite interbedded in the flows contain Middle Ordovician fossils Grey green and silty argillites with Early Silurian fossils disconformably overlie the black argillite followed by interlayered terrigenous conglomerate greywacke sandstone siltstone and argillite of Silurian age A recumbent fold system was overthrust into the map area from the southeast Normal faulting produced a graben which forms a structural belt in the central part High angle transcurrent transverse faults are numerous and rotational and normal transverse faults are present Ordovician limestone is quarried commercially at Cobbs Arm estimated recoverable high calcium limestone reserves are one million tons from Author's abstract