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Valleys and Channels in the Upper Cretaceous-Lower Tertiary Succession, Northeastern Offshore Canning Basin, Australia
- Source :
- International Geology Review. 45:623-634
- Publication Year :
- 2003
- Publisher :
- Informa UK Limited, 2003.
-
Abstract
- During detailed interpretation of seismic survey JNOC88 and some AGSO lines in the northeastern part of the Offshore Canning Basin (Offshore Fitzroy graben and part of the Rowley sub-basin), different scales of valleys and channels in the Albian to Palaeocene succession were noted. The sediments in the area of valley/channel development are dominantly calcilutite, marl, clay, silt, and fine sand deposited in shelf-to-slope water depths. The most evident valleys are associated with the Upper Cretaceous seismic event C6-2 and the Base Tertiary seismic event C13-1, with dominant north-south and northeast trends that are different from the northwest dip of the paleo-slope and -shelf. Small channels developed between C6-2 and C13-1 with an estimated northwest trend. We classify these channels and valleys into four categories: Type 1 to 3 valleys and Type 1 channels according to their scale, morphology, and related geological processes. Among them, Type 1 and Type 2 valleys are associated with the low point of ...
Details
- ISSN :
- 19382839 and 00206814
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- International Geology Review
- Accession number :
- edsair.doi...........7cf90c8389b878bd40d394da5ff514be