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DOI:10.2113/50.3.419
Corpus ID: 131571900
Subaerial unconformity at the Potsdam-Beekmantown contact in the Quebec Reentrant: regional significance for the Laurentian continental margin history
O. Hersi, A. H. Mohamed, +1 author G. Nowlan
Published 2002
Geology

Bulletin of Canadian Petroleum Geology
ABSTRACT The Cambrian-Ordovician Potsdam and Beekmantown groups of the Quebec Reentrant (southwestern Quebec and southeastern Ontario) were deposited during rifting and drifting phases of the… Expand
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35 Citations
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ABSTRACT The Beekmantown Group (Lower Ordovician) of the Saint-Flavien reservoir has produced 162x106 m3 (5.7 bcf) of natural gas between 1980 and 1994. The conversion of the field into gas storage… Expand
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Geology
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The Middle Ordovician St. George Unconformity is the Sauk/Tippecanoe sequence boundary in western Newfoundland. It is a karst unconformity to disconformity to paraconformity. It formed by uplift and… Expand
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The Upper Ordovician Trenton Group of southern Quebec represents the last Taconian foreland basin carbonate unit in the Quebec Reentrant, prior to final collapse of Laurentia's continental margin and… Expand
85 Citations
Paleokarst breccias, calcretes, silcretes and fault talus breccias at the base of upper Proterozoic "Windermere" strata, northern Canadian Cordillera
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Geology
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In the Ogilvie Mountains, west-central Yukon, the upper Proterozoic lower Mount Harper group (informal name) is stratigraphically equivalent to basal Windermere Supergroup rocks that occur in other… Expand
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Blackriveran (lower Mohawkian, Upper Ordovician) lithostratigraphy, rhythmicity, and paleogeography: Ottawa Embayment, eastern Ontario, Canada
O. Hersi, G. Dix
Geology
1999
The Ottawa Embayment contains erosional remnants of a shallow-water carbonate platform (St. Lawrence Platform) of Late Ordovician (Caradocian) age. Stratigraphy of three Blackriveran formations — in… Expand
23 Citations
Correlation and Timing of Platform-Margin Megabreccia Deposition, Cow Head and Related Groups, Western Newfoundland: ABSTRACT
N. James, R. Stevens, R. Fortey
Geology
1979
The allochthonous Cow Head Group of Cambrian-Ordovician age is a well-exposed but laterally discontinuous succession of continental-margin deposits. Spectacular megabreccias that punctuate the… Expand
3 Citations
Stratigraphic framework for the Cambrian Chaudière Nappe in the external domain of the Humber Zone in the Quebec Re-entrant, and preliminary correlation with adjacent stratigraphic frameworks
D. Lavoie
Geology
2002
The Chaudiere Nappe is limited to the north by the Logan’s Line and associated melange units, and to the south by the Foulon Fault. Sedimentary units of the Chaudiere Nappe form the Sillery Group… Expand
7 Citations
Pre-Cairnside Formation carbonate-rich sandstone: evidence for a Cambrian carbonate platform in southwestern Quebec?
O. Hersi, D. Lavoie
Geology
2000
Logging of cores drilled from the Unimin quarry, near St.-Canut, southwestern Quebec, revealed bioclastic, dolomitic sandstone lithofacies below the upper Cambrian Cairnside Formation, upper Potsdam… Expand
16 Citations
UPPERMOST CAMBRIAN–LOWER ORDOVICIAN FAUNAS AND LAURENTIAN PLATFORM SEQUENCE STRATIGRAPHY, EASTERN NEW YORK AND VERMONT
E. Landing, S. R. Westrop, Linda Van Aller Hernick
Geology
2003
Abstract The Cambrian–Ordovician boundary is a type 1 depositional sequence boundary with dramatic local erosional incision in restricted marine facies on the easternmost New York Promontory. The… Expand
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