About This Item
- Full text of this item is not available.
- Abstract PDFAbstract PDF(no subscription required)
Share This Item
The AAPG/Datapages Combined Publications Database
CSPG Bulletin
Abstract
C.S.P.G. 1990 Convention, "Basin Perspectives"
Applications of Sequence Stratigraphy in the Alberta Foreland Basin: Examples from the Upper Cretaceous [Abstract]
ABSTRACT
The basic approach used to interpret sedimentary sequences in the context of sequence stratigraphy is the recognition of changes in coastal onlap patterns. On passive continental margins, this approach is the most useful since the basin margin which sediments onlap (i.e. the landward margin) is frequently preserved and available for study. In a foreland basin, coastal onlap patterns are often not preserved.
The portion of a foreland basin most easily studied is the distal end, which often comprises marine lithofacies. The analytical approach most easily applied in clastic wedges is the determination of the position of relative basinal downlap based on the distal progradational limits of sandstone into the basin (i.e. seaward) and the parasequence stacking patterns. Regional unconformities and systems tract boundaries may be recognized by the truncation of log markers, by changes in parasequence stacking patterns, and by paleontological data. Using an example from the Upper Cretaceous Dunvegan Formation, this data is used to construct Wheeler diagrams from which the basin history is inferred.
End_of_Record - Last_Page 158-------
ACKNOWLEDGMENTS AND ASSOCIATED FOOTNOTES
1 Alberta Geological Survey, Edmonton T6H 5X2
Copyright © 2003 by The Society of Canadian Petroleum Geologists. All Rights Reserved.