Book Review: Mathematica® in the Laboratory By Samuel Dick,Alfred Riddle,and Douglas Stein Cambridge University Press,Cambridge, 1997, 320 p., $74.95/$29.95 (U.S.), ISBN 0-521-58137-0 hardback, 0-521-49906-2 paperback

Mathematical Geosciences -     

Book Review: Geomodeling. By Jean-Laurent Mallet,Oxford University Press,New York, 2002, 599 p., $80.00 (U.S.) hardcover,ISBN 0-199-514460-0

Mathematical Geosciences -     

Molecular dynamics simulations of the orthoclase (0 0 1)- and (0 1 0)-water interfaces

Molecular dynamics simulations of water in contact with the (0 0 1) and (0 1 0) surfaces of orthoclase (KAlSi₃O₈) were carried out to investigate the structure and dynamics of the feldspar-water interface, contrast the intrinsic structural properties of the two surfaces, and provide a basis for future work on the diffusion of ions and molecules in microscopic mineral fractures. Electron density profiles were computed from the molecular dynamics trajectories and compared with those derived experimentally from high-resolution X-ray reflectivity measurements by Fenter and co-workers [Fenter P., Cheng L., Park C., Zhang H. and Sturchio N. C. (2003a) Structure of the orthoclase (0 0 1)- and (0 1 0)-water interfaces by high-resolution X-ray reflectivity. Geochim. Cosmochim. Acta67, 4267-4275]. For each surface, three scenarios were considered whereby the interfacial species is potassium, water, or a hydronium ion. Excellent agreement was obtained for the (0 0 1) surface when potassium is the predominant interfacial species; however, some discrepancies in the position of the interfacial peaks were obtained for the (0 1 0) surface. The two surfaces showed similarities in the extent of water ordering at the interface, the activation energies for water and potassium desorption, and the adsorption localization of interfacial species. However, there are also important differences between the two surfaces in the coordination of a given adsorbed species, adsorption site densities, and the propensity for water molecules in surface cavities and those in the first hydration layer to coordinate to surface bridging oxygen atoms. These differences may have implications for the extent of dissolution in the low-pH regime since hydrolysis of Si(Al)OSi(Al) bonds is a major dissolution mechanism.     

Book Review Introduction to Geostatistics: Applications in Hydrogeology By Peter K. Kitanidis,Cambridge University Press, 1997, 249 p + xx, $74.95 (U.S.), hardback,ISBN 0-521-58312-8; $29.95 (U.S.), paperback,ISBN 0-521-58747-6

Mathematical Geosciences -     

Book Review: Symmetry Methods for Differential Equations: A Beginner's Guide. By Peter E. Hydon,Cambridge University Press,Cambridge, 2000, 213 p. +xi, $74.95 (hardback) ISBN 0-521-49703-5, $29.95 (paperback) ISBN 0-521-49786-8

Mathematical Geosciences -     

EASY％R0与TTI-R0数值模拟方法比较——以黄骅坳陷乌深1井山西组为例

选取黄骅坳陷乌深1井的富含烃源岩的山西组地层为研究对象，并结合相关研究资料，在揭示其埋藏史与受热史的基础上，应用EASY％R0与TTI数值模拟方法对有机质成熟度进行了反演、对比分析。研究结果表明，EASY％R0反演的成熟度较合理与准确，在实际应用中的价值更大。