Lecture Index: Notebook terms./ Description of idealized fault components./ Fault zone rocks and structures./ Fault recognition at map scale./ A traditional fault classification. The bedrock geology will be discussed only in generalities because it . The block that should be in the foreground has been eroded away. STRUCTURAL GEOLOGY ALONG THE NORTHWESTERN COLUMBIA RIVER BASALT MARGIN, WASHINGTON by Newell P. Campbell WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN FILE REPORT 88-5 November 1988 This report has not been edited or reviewed for conformity with Division of Geology and Earth Resources standards and nomenclature A fault is a planar discontinuity along which displacement of the rocks occurs. • Fault zones and fault rocks • Types of faults and terminology • Slip vs. separation • Faults in wells • Fault propagation Terminology Hanging wall Foot wall Faults, fault zones, shear zones Fault Zone Shear Zone Fault zone geometry depends on mechanical stratigraphy (Richard et al., 2013) Fault The geology student is standing where the foreground block was prior to erosion. All of the topics presented in Chapter 2 fall under the sphere of geology, and questions or problems in characterizing soils or 19 Normal: rocks above the fault plane, or hanging wall, move down relative to the rocks below the fault plane, or footwall. GEOLOGIC MAPS . A fault on which the two blocks slide past one another. Hanging wall – HW – block above fault plane Readings: Reading in Fossen, Structural Geology textbook, pages 119-126, and 135-138, 151-185 A left-lateral strike-slip fault. Descriptive geometry of faults A. In the illustrated example, a fault surface is exposed in a ravine. You may need to install Acrobat Reader to obtain the PDF documents. The Coal Oil Point fault is located approximately 4,000 feet south of the San Joaquin Download PDF : Missouri Landscapes: A Tour Through Time, by John Hawker. The fault trends east-west and has resulted in at least 5,400 feet of vertical separation. Dowload PDF Detailed mapping of the sea floor has revealed no surface expression of this fault. Geological Maps 3-Faults 4 moves downward relative to the other resulting in a stretching of the strata (B). PURPOSE: To be able to understand, visualize, and analyze geologic maps . The fault is located about 200 feet south of both Coal Oil Point and Goleta Point. The contacts between different geologic formations Fault, in geology, a planar or gently curved fracture in the rocks of Earth’s crust, where compressional or tensional forces cause relative displacement of the rocks on the opposite sides of the fracture. Faults fracture = a discontinuity or break in rock fault = a discontinuity in which one block has slipped past another (Mode II or III) joint = a discontinuity in with no slip parallel to fractures some opening (Mode I) 1. The relative position of the hanging wall and footwall (as discussed in GY 111 lectures) is also indicated on the diagram. CE 437: Structural Geology Notes 3 IV. Description of faults. Figure 3. Types of Strike-slip fault movement. Slickenlines lying in a fault surface track the slip direction. 2019 Geotechnical Manual Page 2 of 15 is too complex and diverse to cover within the scope of this manual. 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