1990
DOI: 10.4138/1694
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Structural trends and basement rock subdivisions in the western Gulf of St. Lawrence, northern Appalachians

Abstract: We compiled industry seismic and LITHOPROBE deep seismic data in the southwestern Gulf o f St. Lawrence, and interpreted them together with gravity, magnetic and industry well data, to study the deepest sediments, which are assignable to the Horton Group o f Late Devonian-Early Carboniferous age, and the basement rocks of the northern Appalachians.Three upper crustal basement blocks with differing seismic character and orientation of geological structures were identified. South o f the Appalachian structural f… Show more

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Cited by 17 publications
(25 citation statements)
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“…The Late Devonian and Carboniferous rocks of the Basin formed in an abortedrift environment as indicated by structural, magmatic and geophysical evidence of widespread crustal thinning and extension (McCutcheon & Robinson, 1987;Fyffe & Barr, 1986;Durling & Marillier, 1990). The Piskahegan Group was deposited just before or during the initial rapid-subsidence stage of basin development, as were a number of other volcanic suites in Nova Scotia and Newfoundland (McCutcheon & Robinson, 1987).…”
Section: Regional Geology and Tectonic Settingmentioning
confidence: 96%
See 1 more Smart Citation
“…The Late Devonian and Carboniferous rocks of the Basin formed in an abortedrift environment as indicated by structural, magmatic and geophysical evidence of widespread crustal thinning and extension (McCutcheon & Robinson, 1987;Fyffe & Barr, 1986;Durling & Marillier, 1990). The Piskahegan Group was deposited just before or during the initial rapid-subsidence stage of basin development, as were a number of other volcanic suites in Nova Scotia and Newfoundland (McCutcheon & Robinson, 1987).…”
Section: Regional Geology and Tectonic Settingmentioning
confidence: 96%
“…The late-to post-Acadian magmatism was synchronous with formation of the Maritimes Basin by tensional collapse and thermal subsidence that followed Acadian continental collision (McCutcheon & Robinson, 1987;Durling & Marillier, 1990). The Late Devonian and Carboniferous rocks of the Basin formed in an abortedrift environment as indicated by structural, magmatic and geophysical evidence of widespread crustal thinning and extension (McCutcheon & Robinson, 1987;Fyffe & Barr, 1986;Durling & Marillier, 1990).…”
Section: Regional Geology and Tectonic Settingmentioning
confidence: 96%
“…4.15A, B). Malo and Béland (1989) The extension of the Grande-Rivière Fault within the Gulf of St-Lawrence can be observed in the geophysical map of Durling and Marillier (1990), where it separates the structural blocks of Laurent and Bradeile (Fig. 4.16).…”
Section: Synopsis Of Fault Motion Affecting Carboniferous Rocks W Thementioning
confidence: 98%
“…In the Late Devonian, small faultbounded basins opened up from the oblique convergence of Gondwana after the Middle Devonian Acadian orogeny (Gibling et al, 2008); they are collectively known as the Maritimes basin. Regional strike-slip faults were active through most of the Maritime basin's development, resulting in local development of pull-apart basins and subsequent basin inversions and deformation (e.g., Bradley, 1982;Durling and Marillier, 1993). With time, these small continental basins expanded, and sedimentation was largely continental to marginal marine (Gibling et al, 2008).…”
Section: Geological and Tectonic Settingsmentioning
confidence: 99%