In the Spring Semester of 1999, Dr. Kline collaborated with Don Owens of the University of Arkansas at Little Rock (UALR) so that the Petrology classes of the two schools could enjoy the geology available in the Wichita Mountains of OK. A series of mafic and ultramafic plutonic rocks is intruded by felsic plutonics and overlain with equivalent rhyolite volcanics within a failed rift arm, the Oklahoma aulacogen. The topography is a foretaste of the Rocky Mountains.
Flow-banding in devitrified rhyolite near the top of the volcanic series. Note that the flow bands are folded into tight isoclinal folds, just barely visible at base of the outcrop, indicating that after laminar flow formed the banding, slumping of the lava flow folded the flow bands before it completely solidified.
Melanie Griffin atop Mt. Scott with a view of part of the felsic series in the foreground and the mafic series in the background.
Wipavan Phiukao and Wes Davis check out mafic dikes of a series of intrusives that post-date the granite.
