The Arbuckle Uplift is a unique study area with a complex geologic past consisting of Precambrian rifting followed by Pennsylvanian inversion and uplift. This field course offers participants a chance to study the structures of the thick-skin Arbuckle Uplift followed by several days in the thin-skin Ouachita Fold and Thrust Belt. We will also have the opportunity to see strike-slip deformation associated with the Arbuckle Uplift and learn how an evolving stress field can lead to multiple structural styles in an area that underwent multiple tectonic events.
Some of the concepts taught include: thick-skin vs thin-skin deformation; flexural slip vs flexural flow; fault bend folds, fault propagation folds, and faulted detachment folds; the impact of mechanical stratigraphy on structural styles; the impact of pre-existing structures and stress; damage zones around faults; fold accommodation faults; and much more. Participants are encouraged to ask questions, take notes, and will be given several exercises to help grasp these concepts.
This field area also provides a great opportunity to study fractures and how they can be used as kinematics indicators for paleostress conditions. In the field, we will look at different fracture types and the implications to stress, mechanical stratigraphy, and faulting. We will also look at cross-cutting relationships when multiple fracture sets are present to decipher the sequence of events and tectonic evolution of a structure.
Rocks at the surface include the Precambrian basement, Cambrian rhyolite from the rifting stage, Ordovician through Mississippian pre-tectonic carbonates and clastics, as well as syn-tectonic Pennsylvanian clastics. Participants will have the opportunity to see the role of mechanical stratigraphy on the structural styles that resulted.
On the last day, the attendees will take a boat trip around Lake Ouachita where we will dock at several locations to look at unique fracture sets, overturned folds, and faults. At the end of the boat trip, participants will have the opportunity to hunt for graptolite fossils in the Womble Shale.
Discussions will be held on not only understanding the structural styles of contraction but will also include topics on petroleum systems elements such as trapping styles, timing, and migration into traps, and proper seals. Small-scale structures seen in outcrop will be compared to analog fields in the adjacent Anadarko and Ardmore Basins, as well as to field all over the world that underwent similar tectonic events with similar structural styles.
• Geologists • Geophysicists
This course is meant for those making structural interpretations in seismic data, constructing regional tectonic models, and working in systems that underwent multiple tectonic events. Events include rift faulting, fold, and thrust belts, and strike-slip systems that develop within these types of systems. Structural models can be crucial for exploration and development. This course will provide participants with multiple models and analogs that can be applied back at the office.
This field trip is available upon request. The field trip is $3500/person and this cost includes all hotels, meals, transportation, national park passes, permits, field guide, exercise materials, and tuition. Group discounts are available if your company decides to send 3 or more participants.
Visas for the US typically take 1-2 months to process therefore we recommend contacting us as soon as possible so we can send you a letter of invitation that you can take to your local US consulate.