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Formation of oceanic crust at slow spreading rates: New constraints from an extinct spreading center in the Labrador Sea
Deep seismic reflection data across the conjugate margins of the Labrador Sea
Effects of rifting and subsidence on thermal evolution of sediments in Canada's east coast basins
Listric faults imaged in oceanic crust
Lithoprobe: new perspectives on crustal evolution
Deep seismic reflection data from the Bay of Fundy and Gulf of Maine: tectonic implications for the northern Appalachians
A deep seismic reflection profile across the Nova Scotia continental margin, offshore eastern Canada
Deep crustal structure beneath a rifted basin: results from seismic refraction measurements across the Jeanne d'Arc Basin, offshore eastern Canada
Temperature effects and their geological consequences at transform margins
Northeastern extension and crustal expression of terranes from Cape Breton Island, Nova Scotia, based on geophysical data
Collision along an irregular margin: a regional plate tectonic interpretation of the Canadian Appalachians: Reply
Crustal structure across the Southwest Newfoundland Transform Margin
Deep crustal structure and evolution of the rifted margin northeast of Newfoundland: results from LITHOPROBE East
Collision along an irregular margin: a regional plate tectonic interpretation of the Canadian Appalachians
Comment and Reply on “Deep seismic reflection profile across the northern Appalachians”: REPLY
Deep seismic reflection profile across the northern Appalachians
Abstract The continental margin south of the Grand Banks (Fig. 1) is of transform origin and formed by shearing between the African and North American plates. It traces the northern limit of these plate motions. Its age is Early-Middle Jurassic in the northwest where it joins the rifted Nova Scotian margin and Early-Middle Cretaceous at its southeastern terminus. The northwestern segment of this margin (see geological map and Fig. 1) is similar to the adjacent rifted margin off Nova Scotia. The salt diapirs which form the Sedimentary Ridge Province continue northward from that rifted margin, and are present in the northwestern part of the transform margin. A thick sequence of Mesozoic-Cenozoic sediments are present in the South Whale Sub-basin, where stratigraphy and depositional environment is similar to that of the sediments on the Nova Scotia rifted margin. Thus, the junction between the Nova Scotian rifted margin and this transform margin is complex and diffuse. It is only southeast of the South Whale Sub-basin that the geologic style of margin typifies transform tectonics, and the transect crosses the margin in this region. Continental basement beneath the southern Grand Banks comprises rocks of the Meguma and Avalon terranes of the Appalachian Orogen (Hatcher and Williams, 1983). The detailed geology of these terranes is obscured by the overlying Mesozoic-Cenozoic sedimentary cover. Thus the Avalon zone is simply depicted as continental crust on this transect. The boundary between the Avalon and Meguma terranes is defined by the Collector Anomaly (Haworth, 1981), a positive gravity