Geological Survey of Canada, Current Research (Online) no. 2000-D4
Geological Survey of Canada, Current Research (Online) no. 2000-D4

Author: O. Salad Hersi

Publisher: Natural Resources Canada

Published: 2000

Total Pages: 10

ISBN-13: 0660180472

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This paper documents some aspects of the lithostratigraphic and sedimentological attributes of the Upper Cambrian Cairnside Formation, as observed in drill core and in surface exposures in a quarry near Covey Hill, southern Quebec. The paper begins with a review of previous research and stratigraphic terminology, then describes the lithology and depositional environment of the uppermost beds of the underlying Covey Hill Formation. The two units of the Cairnside Formation are then described and correlations with other localities are discussed. The final section briefly describes the Cairnside Formation depositional environment.

Geological Survey of Canada, Current Research (Online) no. 2000-D3
Geological Survey of Canada, Current Research (Online) no. 2000-D3

Author: O. Salad Hersi

Publisher: Natural Resources Canada

Published: 2000

Total Pages: 10

ISBN-13: 0660180464

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Cores drilled from a quarry north of Montreal show a distinct lithostratigraphic unit occurring below the Upper Cambrian Cairnside Formation. The unit was previously considered as the Covey Hill Formation of the Lower Potsdam Group. This paper describes the regional geological setting, lithology, and depositional environment of this unit. Evidence for considering the unit as part of the Rivière Aux Outardes Member (Clark, 1966) is presented. Correlations with other stratigraphic units in southern Quebec are discussed along with evidence for a possible Cambrian carbonate platform in the region. Two scenarios of possible regional depositional episodes are also hypothesized.

Geological Survey of Canada, Current Research (Online) no. 2000-C14
Geological Survey of Canada, Current Research (Online) no. 2000-C14

Author: C. Sasseville

Publisher: Natural Resources Canada

Published: 2000

Total Pages: 11

ISBN-13: 0660180332

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Presents results of 1999 field studies focusing on the structure & stratigraphy within the Wallace Lake greenstone belt of east central Manitoba. The stratigraphic results involve redefinition of some of the sequences previously described in the belt and the introduction of new stratigraphic nomenclature. The nature of the contact between stratigraphic assemblages, and the internal stratigraphy of these assemblages, is then presented. This is followed by a discussion of the stratigraphic position of various komatiitic units found in the belt. The final sections describe the geochemistry of the volcanic rocks and the structural history of the greenstone belt.

Geological Survey of Canada, Current Research (Online) no. 2000-C15
Geological Survey of Canada, Current Research (Online) no. 2000-C15

Author: John A. Percival

Publisher: Natural Resources Canada

Published: 2000

Total Pages: 10

ISBN-13: 0660180340

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The North Caribou terrane is one of the largest blocks with continental affinities in the western Superior Province. This paper reviews field relationships at the southern margin of this terrane in the western Uchi belt between Trout Lake, north-west Ontario, and Lake Winnipeg, Manitoba. After an introduction on the regional geological framework, the paper describes the Trout Lake Batholith, the Red Lake-Garner Lake lobe, the Bloodvein-Wanipigow River corridor, the English Lake magmatic complex, and the eastern Lake Winnipeg area. Implications of the observations for crustal architecture are discussed.