PPT-Fault and Folds: Deformation of the Crust

Isostasy When gravitational and buoyant forces are equal a state of isostasy exists As erosion wears away the crust the lithosphere becomes lighter and rises As erosion continues the . Deformation. Whether a material bends or breaks depends on . h. ow much stress is applied to the material.. Deformation. Process by which the shape of a rock changes because of stress.. Objectives:. Describe. Lower Crust . and . Upper Mantle: Evidence . from . Rock Mechanics, Geodesy, and . Field Observations. Roland . Burgmann. . and Georg . Dresen. Key Purposes. Concerned . with describing material properties through constitutive equations that relate . InstantonS. , . Instanton. numbers and ADHM construction. 　. ICMP 09, Prague, August 3, 2009. Akifumi Sako. Kushiro National College of Technology. Noncommutativity. of . R. n. NC parameter , Comm. Lim. , . Answer these 2 questions in your journal!. 1. . Tectonic plates consist . of… . a. . continental crust. . . b. . oceanic . crust.. c. . both continental and oceanic . crust.. d. . mesosphere. .. 2. The deep interior of the Earth can be mapped . Mr Boland . Geography. The earths crust is divided into layers. But because the earths plates are convergent, neutral and divergent the layers of the earths crust have been changed and deformed.. The three types of deformation are. Lecture 23. Gly. 326. Fold geometry. Axial plane/hinge line geometry. Not all hinge lines are vertical .  folds may be asymmetric about the axis!. OLD. YOUNG. OLD. YOUNG. Fold geometry. Folds can described by hinge geometry. Kinematic analysis of deformation. B. Natalin. Stress, strain, and deformation. The . stress . (σ) acting on a plane is the force per unit area of the plane (σ = . F. /area).. The. deformation . refers to changes in shape, position, or orientation of a body resulting from the application of a differential stress (i.e., a state in which the magnitude of stress is not the same in all directions).. pg. . 115. http://www.indiana.edu/~g103/G103/week9/wk9.html. . http://www.uwgb.edu/DutchS/EarthSC202Notes/quakes.htm. . Folding. : . When . Rock Layers. . Bend. . because of STRESS. What are anticlines?. Abstract--First generation structures in greywackes of the Yuso Group from the Cantabrian Mountains of northern Spain show a distinct variation in geometry with depth in a regional synclinal structure point load in isotropic half space. “The . Boussinesq. Problem”. Nicholas Lau. 9. th. November, 2018. A very brief introduction to . Elastic Materials. Strain (deformation) when stress is applied. Thomas Voigt. 1. , Jonas Kley. 2. , . Christoph Wehner. 1. 1. Friedrich-Schiller-Universität Jena, Institut für Geowissenschaften, Germany (voigt@geo.uni-jena.de). 2. Geo 281: geology for engineers. Geology and Geophysics Department. King Saud University. ROCK . DEFORMATION (STRESS). Tectonic forces exert different types of stress on rocks in different geologic environments. . Arianne Petley-Ragan. 1,*. , . Ben-Zion, Y.. 2. , . Austrheim. , H.. 1. , . Ildefonse. , B.. 3. , Renard, F.. 1,4. and Jamtveit, B.. 1. 1. Physics of Geological Processes, The . Njord. Centre, University of Oslo, Oslo, Norway. -Reviewed by Jody R. Becker-. Post . Laramide. Forces at Work. Some Possible Models for Deformation. Trench pull and . S. ubduction. zone rollback. Rotation of the . Cascadia. . Forearc. Development and propagation of San Andreas and Walker Lane fault systems.