About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Abstract
AAPG Bulletin, V.
2004. The American Association of Petroleum Geologists. All rights reserved.
High-resolution geological AUV survey results across a portion of the eastern Sigsbee Escarpment
Y.-D. Eddy Lee,1 Robert A.
Tony
George2
![ldquo](IMAGES/LDQUO_BOLD.jpg)
![rdquo](IMAGES/RDQUO_BOLD.jpg)
1CC Technologies, Inc., 10615 Shadow Wood Drive, Suite 100, Houston, Texas 77043
2CC Technologies, Inc., 730 E. Kaliste Saloom Road, Lafayette, Louisiana 70508
AUTHORS
Y.-D. Eddy Lee is currently working as a geologist at CC Technologies, Inc., where he started in 1999. He received his M.S. degree (1995) and his Ph.D. (2000) in geological oceanography from Texas A
M University and his B.S. degree in geology from Chinese Culture University in Taiwan (1988). His areas of interest and specialization include the study of marine geologic hazards and the geotechnical engineering properties of soils.
Robert A. Tony
George is the geosciences manager at C
C Technologies, Inc. He holds B.S. degrees in
geophysics
(1985) from the University of Louisiana, Monroe, and computer science from Louisiana Tech University (1988). He has been involved with the acquisition and interpretation of high-resolution, marine geophysical survey data for more than 15 years. Tony is a 20-year member of the AAPG.
ACKNOWLEDGMENTS
The authors thank Andrew Hill, James Thomson, Nat Usher, and Phillippe Jeanjean, of BP Exploration
, Inc., for permission to publish this article. Hill had the foresight to see that AUV technology was a viable alternative to deep-towed systems. His efforts were instrumental in committing BP and C
C Technologies, Inc., to the development of the AUV technology. Thanks are extended to Dan Bean and William Sager (Texas A
M University) for their detailed and constructive review of the original manuscript submitted.
ABSTRACT
High-resolution geophysical data were acquired for an investigation across a portion of Sigsbee Escarpment using an autonomous underwater vehicle (AUV Hugin 3000), which allowed mapping of the seabed and near-seafloor features in detail and large two-dimensional data sets to be collected in a short time in deep water over rugged terrain. Complex seafloor structures are revealed in the survey area. These seafloor structures include a graben fault zone, rugged escarpment faces, slump deposits, and erosional furrows. Geological morphologies occurring in the survey area are associated with salt tectonics, gravitational driven failure, and ocean bottom-current activities. The Sigsbee Escarpment in the survey area is marked by an abrupt scarp on the order of 700 m (2300 ft) and a prominent increase in seafloor gradients as much as 30. The Sigsbee Escarpment in the center and west of the survey area is generally scalloped, representing retrogressive slumps. The escarpment face is characterized by narrow and sharp ridges and numerous gullies. In the east of the survey area, the escarpment appears to be upturned, tilted, and eroded. A graben fault structure, representing a suture zone possibly associated with the joining of the two underlying salt sheets, is observed in the north-central survey area. In front of the escarpment, on the continental rise, a series of longitudinal furrows and slump deposits have been interpreted. The slump deposits at the base of the escarpment form aprons of sediment consisting of displaced and mixed sediments primarily of clay.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
Watermarked PDF Document: $14 | |
Open PDF Document: $24 |
AAPG Member?
Please login with your Member username and password.
Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].