Tensile Fracturing in Rocks

From the contents: Fracture Physics: The Griffith Criterion; Nucleation; Linear Elastic Fracture Mechanisms; Dynamic Fracture; Subcritical Cracking.- Fracture Geology: Fractography and Tectonofractography; Uplift, Post-Uplift, Neotectonic and Surface Joints; Primary and Secondary Fractures.- Four Fracture Provinces in Sedimentary Rocks: The Appalachian Plateau; The Bristol Channel Basin; Zion National Park; Beer-Sheva Syncline, Israel; Comparison of Unrelated Fracture Provinces.- Jointing in Granites: The Cloos Model; Fracture in Granites from the North Bohemian Massif in the Lusatian Granodiorite Complex and the Erzgebirge; Joints in Granites from the South Bohemian Pluton; Joints in Granites from the Sierra Nevada Batholith in California; Fractographies - Quasi-Static and Dynamic Fractures; Comparative Jointing; Analysis of Fracture Velocity versus Stress Intensity Factor in the Borsov Joints; Velocity and Stress Intensity Manifestations of Fracture Propagation in Granites; New Fracture Areas in the Enchelon and Hackle Fringes on Joint Surfaces; The Index of Hackle Raggedness on Joint-Fringes; Drilling in-situ Fracture from the Rock.- Electromagnetic Radiation Induced in Fractured Materials: History of EMR Research; The EMR Model; EMR Pulses Induced by Rock Fracture; EMR and Material Elasticity; EMR and Percussion Drilling; EMR Detection; EMR Induced by Underground Rocks under Stress.- Assorted Problems in Fracture Geology: Regional Jointing; Systematic Joints; Joint-Length Distribution; Paleo-Fracture Stress; Fault Termination Zone; Fault-Joint Relationships; A New Fringe Characterization and Analysis.