Basinal to Local Scale Stratigraphy and Facies Architecture of the Jackfork Group Turbidites, Arkansas

Discover a combination of regional and local observations that will provide greater insights for both improved conceptualization at the regional scale exploration and straitgraphic (and structural) details that affect production developments of the Jackfork Group Turbidites. Excellent exposures of Jackfork Group strata in southwest-central Arkansas offer examples of regional and local scale stratigraphy and the characteristics within. This field seminar will provide not only a specific look at the Jackfork Group but also an overall look at regional and local stratigraphy that can be applied to many other environments. This field seminar will be taking place Thursday, April 3 thru Saturday, April 5, 2014 in Little Rock, Arkansas. For more information on this course: Basinal to Local Scale Stratigraphy and Facies Architecture of the Jackfork Group Turbidites, Arkansas

Who Should Attend

Beginning/intermediate level geologists/geophysicists involved in exploration and production of deep-water (turbidite) reservoirs who are seeking an understanding of their regional to local scale stratigraphy and characteristics. A basic understanding of structure and stratigraphy is desirable. Emphasis is placed on relating the outcrops to Gulf of Mexico deepwater deposits.

The objectives of this trip are three-fold, and include outcrops that have not been previously utilized in prior Jackfork field trips by various organizations:

  • Highlight regional variations in stratigraphy and facies architecture over a 250-300 mile Jackfork traverse across part of the Ouachita Basin.
  • Compare and contrast more localized stratigraphic and facies characteristics at the reservoir scale.
  • Provide insight into the origin of the Jackfork, particularly with respect to an ‘out-of-grade’ continental margin’.

Course Content

The first day of the trip will comprise examination of a depositionally updip sandy submarine canyon fill (Big Rock Quarry), followed by a slope deposit consisting of mass transport deposits and intervening sandy fill (Pinnacle Mountain State Park). The second day will begin with a traverse through the famous DeGray Spillway 1000 ft. section of lower/base of slope Jackfork strata, then move onto a newly studied, complete 5000 ft. Jackfork section near the town of Kirby, Arkansas, where 25 individual sandstone packages are separated by shales; some of these are 3D outcrops. The third day will comprise a detailed examination of base of slope strata at Hollywood Quarry, which contains several different structural and stratigraphic features at reservoir scale. This will be followed by a final stop along a more basinal section of sandstone at Dierks Spillway.

Field Seminar Location/Itinerary

Begins and ends in Little Rock, Arkansas. Flights to Houston from Little Rock airport are available on Sunday, April 6, to arrive in time for the afternoon opening session of the Convention. (Participants should plan to arrive in Little Rock on Wednesday April 2 and depart on Sunday morning April 6.)

– For registration and full course details please visit: HERE!

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