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Book Chapter

Cardium and Viking Sandstone Cores

By
R. G. Walker
R. G. Walker
Department of Geology McMaster University, Hamilton, Ontario
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Published:
January 01, 1985

Abstract

Three shelf sandstone cores from western Alberta are discussed in terms of lithology, bedding types, log character, and processes of deposition. Two of the cores are Cardium cores, one each from Ricinus and Caroline Fields. A single Viking Sandstone core from Stettler Field is discussed.

The general geology of the Cardium field at Ricinus is given in Walker (this volume: “Upper Cretaceous (Turonian) Cardium Formation, Southern Foothills and Plains, Alberta”). The Cardium Formation is a 50-100 m thick sandstone within the dominantly shaley Alberta (= Colorado) Group, and is Turonian (U. Cretaceous) in age. The geologic setting at Ricinus is summarized in Walker (this volume, Figs. 1, 12, 14, 15, 18); the field is basically a channel fill, the channel being at least 45 km long, 4-5 km wide (before palinspastic reconstruction), and 20-40 m deep. Ricinus sits on top of the junction between the Plains (no deformation) and Foothills (multiple imbricate thrusts); in some wells the sandstone is repeated up to about 6 times.

The Gulf Ricinus 13-26 well is in the northern part of Ricinus Field, which is structurally simpler than the southern part. The gamma-sonic log (Fig. 1) and SP-resistivity log show the sand to be abrupt and sharp-based; the top is also abrupt. Serrations in the gamma ray indicate either thin mud-stone partings, or zones of ripped-up mud clasts (e.g., 9011.5, 9017, 9019, 9020 feet).

As can be seen in the photographs of the slabbed cores (Fig. 2, A-D) the base of the sandstone (9023.6 feet)

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Contents

SEPM Short Course Notes

Shelf Sands and Sandstone Reservoirs

R. W. Tillman
R. W. Tillman
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D. J. P. Swift
D. J. P. Swift
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R. G. Walker
R. G. Walker
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SEPM Society for Sedimentary Geology
Volume
13
ISBN electronic:
9781565762428
Publication date:
January 01, 1985

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