They are used to extract geological features such as faults, stratigraphy, channels, and rock properties from seismic data. 9.1 Genetic and Geometric Classification 9.2 Identification and Effect of Faulting 9.2.1 Fault Plane Criteria 9.2.2 Topographic Criteria 9.2.3 Geological Criteria 9.2.4 Types of Faults and its relation to Major Stress Directions 9.3 Influence of Faults on Major Geo-Engineering Projects 10. The acute angle between the oblique bounding faults of this pull-apart basin is almost 30°, consistent with a typical range of 30°-35° (e.g., Gürbüz, 2010). Reappraisal and extension of published measures allows study of geologically realistic asymmetrical folds. Over the last ~15 years we have excavated 73 trenches across active normal faults in the Taupo and Hauraki Rifts, North Island, New Zealand. Where the strike- slip and dip- slip di splacements have similar magnitude, the fault may be called an Geometric Classification of Folds Replaces both "Classification, standards .of accuracy, and general specifications of ieodetic control surveys," issued February 1974 and "Specifications to support classification, standards of accuracy, and general specifications of geodetic contrcii surveys," revised June 1980 Pref. 1.Geodesy-Standards-United States. D Classification by orientation of axial plane and plunge of fold axis E Symmetrical folds vs. asymmetrical folds III Ramsay's classification scheme; single-layer folds in profile A Relates the curvature of the inner and outer surfaces of a fold. The terms normal fault and reverse fault, while strictly defined for faults with zero strike-slip displacements, also apply to faults with small strike- slip components accompanying much larger dip - slip displacements. and thrust faults. We use a geometric classification of damage zones into tip-, wall-, and linking- damage zones, based on their location around faults. Geometric seismic attributes are derived calculations of 3D seismic reflection data. Fold 10.1 Genetic and Geometric Classification Andersonian classification: This classification is based both on observation of what types of faults are common, and on theory guided by the idea that the earth's surface tends to shape fault orientations. Real faults are more complicated, as we will see later in the course, but this is a useful starting classification. "September 1984." The geometrically possible range of cleavage-transected folds is explored. 23.VCK_Geometric Classification of Folds - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. The stratigraphy in these trenches is quite similar because of the predominance of volcanic and volcanic-derived deposits, sourced from the active Taupo Volcanic Zone. I. The present criterion for recognizing fault breccia as having no ‘primary cohesion’ is often difficult to assess. B Dip isogons: lines that connect points of equal dip Fold class Curvature (C) Comment General ClassificationGeneral Classification 11. Despite extensive research on fault rocks, and on their commercial importance, there is no non-genetic classification of fault breccias that can easily be applied in the field. Fold ClassificationFold Classification General ClassificationGeneral Classification Morphological ClassificationMorphological Classification Geometric ClassificationGeometric Classification Special ClassificationSpecial Classification 10. Terms and measures for describing real and theoretical three-dimensional cleavage-transected folds are reviewed and clarified. 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