.... Post-Altithermal glacial activity is restricted to a twofold late Neoglacial advance on Mount Jefferson and Three-Fingered Jack. Stone-weathering characteristics and soil development are used to differentiate and correlate the drifts throughout the area. The degree of soil development on the drifts...

... is divided into three units, all of which are dominated by tonalite ( Fig. 2B ; Miller and Paterson, 2001 ; Matzel, 2004 ; Shea, 2014 ): Blue Creek unit (ca. 91.7 Ma to 90.5 Ma), the Cougar Mountain unit (ca. 90 Ma), and the Whistling Pig unit (ca. 88 Ma). Directly east of the Seven-Fingered Jack pluton...

... quickly and may sequester some of the dissolved Cu and Pb ( Kimball et al . 2004 ). Three mine sites within the study area were identified as the principal sources of metal contaminants ( Church et al . 2004 b ; Nimick & Cleasby 2004 ). These are the Bullion mine upstream from the Jack Creek...

... brittle emplacement structures. The studied host rock is remarkably undeformed despite intrusion. Volumetric expansion caused by the intrusions is almost exclusively accommodated by vertical jack-up of the overburden, on a 1:1 ratio, implying that intrusions may play a significant role in uplift...

...David Tai Wai Ng Abstract A lithofacies analysis of the subsurface Atoka clastic rocks in parts of Jack, Palo Pinto, Parker, and Wise Counties, north-central Texas, was designed to provide a meaningful interpretation of depositional environments that existed during Atokan time, as well as the most...