UArk Student Posters at AAPG meeting in Wichita KS (14-15 Oct)

Adam Martin

Kevin Liner

Richard Benson

Thomas Liner

Caleb Jennings

L-to-R: Gerry Lundy, Kevin Liner, John Mitchell, Chris Liner, 

Mike McGowan, John Gist (poster presenter), and Steve Milligan 

AAPG Midcon core workshop

Over 6300 ft of core layed out in 15 stations. 

Permian halite

Penn/Miss unconformity in Woods County OK. The facies directly beneath the unconformity is called tripolite by the author, but may well be closer to the head cheese breccia reported in the Picher OK mining district report of 1970. The difference is fundamental, a tripolite is wholesale replacement of limestone with silica to create a very porous chalk-like rock, while headcheese breccia is a collapse breccia infilled with younger sediment.

Another Pennsylvanian/Mississippian unconformity look, this time from Sumner County Kansas. There are reworked Mississippian fragments in the lower Penn, and collapse breccia fragments in the upper Mississippi.

Fractured Atoka at Natural Dam Arkansas

Beautiful fractured Atoka Sandstone at Natural Dam. How would seismic waves behave in such a material?  Can we do direct seismic experiments to measure anisotropy in situ?  Probably, if we can find a company to sponsor the research.  

Natural Dam is also a fine place to swim or have a quiet lunch

Site is about 50 mi SSW of Fayetteville, on the north hinge line of the Arkoma Basin.