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Saint Lawrence Platform

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Journal Article
Published: 01 September 2018
Environmental Geosciences (2018) 25 (3): 75-100.
... Ordovician units and is divided into three tectono-stratigraphic domains ( Figure 1A, B ). The autochthonous domain (Lotbinière and Nicolet Formations of the Sainte-Rosalie and Lorraine Groups, respectively), which is part of the St. Lawrence Platform and is little tectonized. The near-surface outcrop...
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Journal Article
Published: 01 November 1978
Canadian Journal of Earth Sciences (1978) 15 (11): 1724-1736.
...Norman Silverberg Abstract The Rimouski shelf is a smooth-surfaced, gently sloping platform which gives way to the north to a steep, sometimes irregular margin of the Laurentian Trough. The surficial sediments are sandy and change rapidly over short distances particularly in areas close...
Journal Article
Published: 02 January 2014
Geological Magazine (2014) 151 (6): 996-1012.
..., the documentation of the contact between the autochthonous St Lawrence Platform and the Appalachians and highlights the regional significance of previously poorly documented ENE faults that experienced post-Ordovician strike-slip motion. Seismic data reveal tectonic slices in the foreland domain underlying...
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Journal Article
Published: 01 September 2010
Bulletin of Canadian Petroleum Geology (2010) 58 (3): 219-234.
... and mélange units are not shown. AF, Aston fault; BBL, Baie Verte-Brompton Line; BF, Bennett fault; DFF, Du Foulon fault; LGF, La Guadeloupe fault; LL, Logan’s Line; SJF, Saint-Joseph fault. The St. Lawrence Platform is bounded to the northwest by the Grenvillian basement and to the southeast...
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Journal Article
Published: 07 January 2002
Canadian Journal of Earth Sciences (2002) 39 (1): 1-17.
... . Seismic refraction data in the northern Gulf of Saint Lawrence: implications for the lower crustal blocks . Canadian Journal of Earth Sciences , 35 : 1222 – 1237 . Kafla A.L. Ebel J.E. 1988 . Seismic structure of the Earth’s crust underlying the state of Maine . Maine Geological...
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Journal Article
Published: 14 May 2004
Canadian Journal of Earth Sciences (2004) 41 (5): 489-505.
...Esther Asselin; Aïcha Achab; Azzedine Soufiane Abstract Chitinozoan studies recently carried out in the “Appalachian Forelands and St. Lawrence Platform” National Geoscience Mapping Program (NATMAP) project have confirmed the regional biostratigraphic value of a number of chitinozoan species...
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Journal Article
Published: 01 July 1991
Canadian Journal of Earth Sciences (1991) 28 (7): 1019-1030.
...Y. Héroux; R. Bertrand Abstract The organic matter (OM) sampled in 15 oil exploration wells and 102 outcrops of Cambrian-Ordovician rocks in the St. Lawrence Lowlands consists of zooclasts (chitinozoans, graptolites, and scolecodonts) and solid bitumen (mainly pyrobitumen). The reflectance...
Journal Article
Published: 17 May 2017
Canadian Journal of Earth Sciences (2017) 54 (8): 827-849.
...J.M. Emberley; D.A. Schneider The St. Lawrence Platform (SLP) and Humber Zone (HZ) of the southern Quebec Appalachians have been the subject of extensive studies to resolve the degree of thermal maturation, yet the timing of the thermal maximum is not well understood. We have employed apatite (AHe...
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Journal Article
Published: 01 March 2010
Bulletin of Canadian Petroleum Geology (2010) 58 (1): 36-55.
... relationships among different structural features observed on the Island and in the Gulf of St. Lawrence are assessed with the aim of understanding the role of these structural features for petroleum migration through the Anticosti Platform. The tectonic impact of Appalachian orogenic events on Anticosti...
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Journal Article
Published: 21 November 2002
Canadian Journal of Earth Sciences (2002) 39 (11): 1675-1687.
...John W.F. Waldron; Jerry DeWolfe; Robert Courtney; Doris Fox Abstract The “Odd-twins magnetic anomaly” is a pair of linear asymmetric positive anomalies located in the Gulf of St. Lawrence, over the post-Taconian, pre-Acadian foreland basin fill related to the development of the Appalachians...
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Journal Article
Published: 03 April 2012
Canadian Journal of Earth Sciences (2012) 49 (5): 637-652.
... the vertical throw of the Saint-Laurent fault to be ∼2 km based on the offset of the St. Lawrence Platform unconformity. In the Quebec City area, the Montmorency fault marks a topographic escarpment of ∼80 m, but the fault throw is not precisely known. Three types of fault-rocks were distinguished...
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Journal Article
Published: 01 January 1983
Canadian Journal of Earth Sciences (1983) 20 (1): 66-85.
...R. Bertrand; L. Humbert; A. Achab; G. Calise; A. Chagnon; Y. Héroux; Y. Globensky Abstract Typical sections of the Ordovician carbonate platform sequence in the St. Lawrence Lowlands (Beekmantown, Chazy, Black River, Trenton, and Utica Groups) were sampled at Neuville, Joliette, and Montreal...
Journal Article
Published: 22 December 2004
Canadian Journal of Earth Sciences (2004) 41 (12): 1473-1490.
... Ordovocian). Lithological, stratigraphic, and structural criteria indicate that tectonosome slices are imbricated foreland basin rocks that are correlative to the Black River, Trenton, Utica, Sainte-Rosalie, and Lorraine groups of the Laurentian platform. Thermal maturation data indicates that disruption...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1993
AAPG Bulletin (1993) 77 (5): 743-760.
...Brian R. Shaw ABSTRACT: Traditional structural interpretations of faults identified in the autochthonous, Ordovician platform rocks of the St. Lawrence Lowlands basin of Quebec, Canada, assert that the primary sense of faulting is normal, extensional, and dip-slip in motion. Interpretation of field...
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Journal Article
Published: 01 June 2001
Bulletin of Canadian Petroleum Geology (2001) 49 (2): 186-201.
...–St. Lawrence Promontory can be summarized in five broad phases that resulted from the interplay of tectonics and sea-level change. Phase 1 is a Llandoverian–Wenlockian regressive phase (R 1 ) related to post-Taconian successor basin infilling, which culminated in extensive carbonate platform...
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Journal Article
Published: 27 December 2007
Canadian Journal of Earth Sciences (2007) 44 (12): 1775-1790.
.... Lawrence Platform were mainly based on sparse macrofauna and inferred stratigraphic position. Unconformities at the Cambrian–Ordovician and Early Ordovician – Middle Ordovician boundaries occurring in autochthonous St. Lawrence Platform and the allochthonous Philipsburg succession (Philipsburg tectonic...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2000
GSA Bulletin (2000) 112 (1): 4-20.
... the land facies north of the La Vieille platform is unknown. Mid-Pridolian time was marked by the coincidence of the eustatic sea-level lowstand of regressive phase R2 (Fig. 11) and the Salinic event, both causing local subaerial erosion. Significant thickening of the Saint-Léon Formation...
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Journal Article
Published: 01 March 2011
Bulletin of Canadian Petroleum Geology (2011) 59 (1): 54-84.
... faulting and southeast-verging structures are also documented. At the edge of the frontal nappes, near Logan’s Line, some of the thrust slices include St. Lawrence Platform units, such as in the Saint-Flavien slice (Fig. 4 ). The foreland thrust belt is separated from the autochthonous platform sequence...
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Journal Article
Published: 01 December 1992
Canadian Journal of Earth Sciences (1992) 29 (12): 2677-2694.
...Lawrence Bernstein Abstract The Lower – lower Middle Ordovician Beekmantown Group of the St. Lawrence Lowlands is a variably thick pertitidal succession of dolostone, limestone, quartzose carbonate, and subordinate siltstone and shale that is gradationally bound by the Potsdam Group below...
Journal Article
Published: 01 November 1991
Canadian Journal of Earth Sciences (1991) 28 (11): 1827-1833.
...Nan-Hai Zhang; Maurice-K. Seguin Abstract Magnetic susceptibility ( K ) and anisotropy of magnetic susceptibility (AMS) were measured on 69 specimens from five sites in the Chazy Group of the St. Lawrence Lowlands in southern Quebec. The K values depict an isotropic to slightly anisotropic...