I thank P. A. Berge and V. Y. Grechka for their insight and collaboration during our earlier related studies in this research area. Work performed under the auspices of the U. S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under contract No.W-7405-ENG-48 and supported specifically by the Geosciences Research Program of the DOE Office of Energy Research within the Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences.