--> Abstract: Sequence Stratigraphy of the Middle to Late Devonian Carbonate Strata of Alberta, Canada, by P. Wong, M. Gilhooly, K. Potma, and J. Weissenberger; #91012 (1992).

Datapages, Inc.Print this page

ABSTRACT: Sequence Stratigraphy of the Middle to Late Devonian Carbonate Strata of Alberta, Canada

WONG, P., M. GILHOOLY, K. POTMA, and J. WEISSENBERGER, Esso Resources Canada Ltd., Calgary, Alberta, Canada

Middle to Late Devonian (Givetian to Frasnian) strata of Alberta, Canada, belong to a second-order sequence comprising the uppermost Elk Point, Beaverhill Lake, Woodbend, and Winterburn groups. This transgressive-regressive sequence, between the Gilwood and Graminia formations, is 8 to 10 million years in duration and consists of a 750 m thick succession of reefal and platformal carbonates and basin-filling shales and limestones.

The second-order sequence can be further subdivided into eight third-order transgressive-regressive sequences that are each approximately 1 million years in duration. The lower, transgressive phase of each sequence is characterized by backstepping carbonate platforms and reefs, and the upper regressive phase, by forestepping carbonate platforms and basin-filling shales and limestones.

The third-order sequences can be regionally correlated between the subsurface and outcrop based on the distinctive stacking patterns of component fourth-order cycles and their stratigraphic position within the second-order sequence and corroborated by biostratigraphic information.

 

AAPG Search and Discovery Article #91012©1992 AAPG Annual Meeting, Calgary, Alberta, Canada, June 22-25, 1992 (2009)