CE 437: Structural Geology Notes 3 IV. The San Andreas Fault is an example of a right lateral fault. Types of Strike-slip fault movement. The relative position of the hanging wall and footwall (as discussed in GY 111 lectures) is also indicated on the diagram. Geologic maps show the distribution of the various igneous, sedimentary, and metamorphic rocks at Earth’s surface in plan view. The fault is located about 200 feet south of both Coal Oil Point and Goleta Point. Slickenlines lying in a fault surface track the slip direction. The geology student is standing where the foreground block was prior to erosion. You may need to install Acrobat Reader to obtain the PDF documents. Download PDF : Missouri Landscapes: A Tour Through Time, by John Hawker. 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. 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 Geological Maps 3-Faults 4 moves downward relative to the other resulting in a stretching of the strata (B). Reverse: rocks above the hanging wall moves up relative to the footwall Strike-slip: rocks on either side of a nearly vertical fault plane move Hanging wall – HW – block above fault plane Detailed mapping of the sea floor has revealed no surface expression of this fault. 19 Normal: rocks above the fault plane, or hanging wall, move down relative to the rocks below the fault plane, or footwall. The bedrock geology will be discussed only in generalities because it . Readings: Reading in Fossen, Structural Geology textbook, pages 119-126, and 135-138, 151-185 The block that should be in the foreground has been eroded away. Figure 3. Hardcopy $10 . A fault is a planar discontinuity along which displacement of the rocks occurs. 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. Lecture Index: Notebook terms./ Description of idealized fault components./ Fault zone rocks and structures./ Fault recognition at map scale./ A traditional fault classification. Download PDF : Roadside Geology of Missouri, by Charles G. Spencer. Descriptive geometry of faults A. Description of faults. A fault on which the two blocks slide past one another. All of the topics presented in Chapter 2 fall under the sphere of geology, and questions or problems in characterizing soils or GEOLOGIC MAPS . A left-lateral strike-slip fault. Dowload PDF The Coal Oil Point fault is located approximately 4,000 feet south of the San Joaquin The fault trends east-west and has resulted in at least 5,400 feet of vertical separation. Lecture notes are available as PDF files. • 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 In the illustrated example, a fault surface is exposed in a ravine. PURPOSE: To be able to understand, visualize, and analyze geologic maps . 2019 Geotechnical Manual Page 2 of 15 is too complex and diverse to cover within the scope of this manual. 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