The natural rock crust, composed primarily of whewellite and gypsum with lesser amounts of quartz and silicates, encapsulates the paints of the extraordinary pictographs at more than 250 rock art sites in the region.
The authors propose a model that describes the origin of each crust constituent and the evolution of these surfaces. Furthermore, they describe the relationship between the ancient paints and crust matrices, information that is necessary for the development of sound conservation strategies.
1996-03 Origin of Whewellite-Rich Rock Crust in the Lower Pecos Region of Southwest Texas and its Significance to Paleoclimate Reconstructions
1999-14 Fourier Transform Raman Spectrographic Studies Of Prehistoric Rock Paintings from Big Bend
2000-11 A Paleoclimate Reconstruction for Southwestern Texas Using Oxalate Residue from Lichen as a Paleoclimate Proxy
This research was made possible through Grant MT-0424-5-NC-18 from the National Center for Preservation Technology and Training (NCPTT).