At this stop the students measured strike and dip of bedding and of tension fractures. They also observed some sedimentary structures like ripple marks.

Above: Carrie Cazes and Judith Barnes examine micro-sedimentary structures on a rocky shore of Lake Ouachita.

Stop 4:

At this stop the sights were amazing! The students examined an extremely well-preserved deep water fold structure and few sedimentary dikes (not shown).The students were able to characterize the type of fold by analyzing the geometry of the beds surrounding the hinge.

Above: The students are eager to analyze this fold. In teams of two the students were required to measure strike and dips. In the picture from left to right Kim Gunderson, Judith Barnes, Will Gauthier, Sherri Castle. Climbing up the fold (left to right):Melanie Thompson, and Brian Velardo. This structure is composed of many massive sands with some interbedded silty sand layers.

Above: Dr. Lorenzo explains that the hinge of this fold is plunging, and asks for student feedback to the plunge angle. Dr. Lorenzo's left hand is on the axial plane of the fold which contains the hinge points for each bed.