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CSPG Bulletin

Abstract


Bulletin of Canadian Petroleum Geology
Vol. 37 (1989), No. 1. (March), Pages 48-82

Stratigraphy of the Lower to Middle Devonian Bird Fiord Formation Canadian Arctic Archipelago

Quentin H. Goodbody

ABSTRACT

The Lower to Middle Devonian Bird Fiord Formation, deposited in the Franklinian Mobile Belt, reflects the changeover from a carbonate shelf/argillaceous basin regime to a siliciclastic system of shelf, deltaic, and fluvial sedimentation. The following six members constitute the formation and are herein defined: Cross Bay, Blubber Point, Baad Fiord, Norwegian Bay, Cardigan Strait, and Grise Fiord members. The distribution of these members is governed by structural and sedimentological controls. On the south limb of the Schei Syncline between Arthur Fiord (Devon Island) and Baad Fiord (Ellesmere Island), the formation is 550 m thick and comprises mainly siliciclastic deposits. On the north limb, there is a stratigraphic thickening and change in sedimentary facies to argillaceous and carbonate deposits. Correlation of these members with other units in the Arctic Archipelago is discussed.

RESUME

La foramtion Bird Fiord, Devonien inferieur a moyen, fut deposee dans la zone orogenique Franklinienne et reflete le changement entre un regime de plate-forme carbonatee/bassin argileux a un systeme siliciclastique de sedimentation de plate-forme, deltaique et fluviatile. Les six membres suivants composent la formation et sont ici definis: Cross Bay, Blubber Point, Baad Fiord, Norwegian Bay, Cardigan Strait et Grise Fiord. La repartition de ces membres est controlee par des facteurs structuraux et sedimentaires. Sur le flanc sud du synclinal Schei entre Arthur Fiord (ile de Devon) et Baad Fiord (ile d'Ellesmere), la formation atteint une epaisseur de 550 m et est composee surtout de sediments siliciclastiques. Sur le flanc nord, il y a un epaississement des strates et des changements de facies sedimentaire vers des depots argileux et carbonates. La correlation de ces membres avec d'autres unites dans l'Archipel Arctique est discutee.

Traduit par Marc Charest


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