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
GCAGS Transactions
Abstract
Abstract: System Tract History Analysis: Key to Understanding Deposition in Cored Reservoir Analog Units on the Shelf
Richard H. Fillon
ABSTRACT
An analytical procedure: "shelf system tract history analysis", has been developed to integrate high-resolution bio-chronostratigraphy, sediment accumulation, compaction-induced subsidence, and late Quaternary sea level records into a detailed accommodation space framework for characterizing system tract deposition. The technique, a modification of geo-history analysis has been profitably applied to section cored on the mid-Louisiana shelf in ca. 70 m of water. Analysis of the cored section places a wave-based induced erosional fourth order sequence boundary at ca. 75 kyBP, within the isotope stage 4 sea level low-stand. It further indicates that a channel-cut, "forced regression surface," within a reservoir analog low-stand delta unit, marks a ca. +30 m terrace that was extant during a portion of the intense isotope stage 2 sea level low-stand which culminated ca. 18 kyBP. Bounding transgressive and highstand system tracts are consistent with deposition in middle neritic depths (ca. 60 to 90 m).
End_of_Record - Last_Page 514-------
ACKNOWLEDGMENTS AND ASSOCIATED FOOTNOTES
Texaco, Inc., P. O. Box 60252, New Orleans, LA 70160
Copyright © 1999 by The Gulf Coast Association of Geological Societies