Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

Development and distribution of Salt Keels in the Deepwater Northern Gulf of Mexico

By Carl Fiduk

The development and distribution of salt keels projecting below the base of allochthonous salt as observed on modern 3-D seismic data in the deep Northern Gulf of Mexico is not random. Although keels may form by several different processes, a suite of keels which form due to extension of sub canopy sediments on a detachment within Oligocene-to-Eocene strata have a unique profile and distinct location. Regional mapping of the base of the salt canopy reveals that keels of this type are found parallel to, but offset shelfward (updip) from the present day Sigsbee Escarpment. This relationship holds across all of Keathley Canyon OCS area and into the Alaminos Canyon OCS area. Keels formed by other processes do not show this unique pattern.

The distanced between keel structures and the Sigsbee Escarpment varies from 10-30 km. The keel structure itself is not a single discrete feature but a series of linked shorter keels. Linkage style between keels appears similar to that for growth faults (relays). The location for detachment initiation and the orientation of individual keels can change markedly between salt lobes comprising the allochthonous canopy. The location for detachment initiation is often found in close relationship with deeper salt structures. Sparse well data indicate that the timing for displacement, which occurred after emplacement of the shallow canopy, is Plio-Pleistocene and therefore geologically quite recent. I speculate that the location where displacement initiates is structurally controlled and has relationships to deeper salt features and flexure points caused by updip crustal loading.

Author Bio:

Dr. Joseph Carl Fiduk


Carl Fiduk graduated with a B.S. (1979) and an M.S. (1982) in Geology, both from the University of Florida. He later received his M.B.A (1985) degree from the University of Texas of the Permian Basin and his Ph. D. in Geology and Geophysics from the University of Texas in Austin (1994). He has worked for the USGS, Gulf Oil, Discovery Logging, the Texas Bureau of Economic Geology, British Petroleum, Texas A&M University, the University of Colorado, CGG, CGGVeritas, WesternGeco/Schlumberger and as a private consultant. His research interests cover sedimentology, coastal and shelf clastic deposition, salt structural deformation and evolution, basin analysis, shelf margin to deep marine depositional processes, petroleum systems analysis, and the use of three-dimensional time and depth data in petroleum exploration. He is currently involved salt-sediment interaction research in the Flinders Ranges, South Australia, fluvial deltaic deposition in the Cretaceous Seaway of NW Colorado, and deep marine stratigraphic analysis in the Gulf of Mexico. Carl is presently Senior Geophysicist for Freeport McMoran O&G working in Houston, TX. In 30+ years as a working geoscientist he has published over 80 peer-reviewed abstracts and papers.

Carl Fiduk picture

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