Geochemistry of formation waters from the Wolfcamp and “Cline” shales: Insights into brine origin, reservoir connectivity, and fluid flow in the Permian Basin, USA - Engle, Mark; Reyes, Francisco; Varonka, Matthew; Orem, William; Lin, Ma; Ianno, Adam; Westphal, Tiffani; Xu, Pei; Carroll, Kenneth C. (Chemical Geology, 2016)