Plunge is the vertical angle between the horizontal plane and the axis or line of maximum elongation of a feature. Trend is the direction of the line formed by the intersection of the planar feature with the ground surface trend is the same as strike only if the ground surface is parallel to the horizontal plane. A dip of 0° means its flat and 90° for a vertical bed. A strike of 000° means the bed is dipping east 090° for south 180° for west and 270° for north. The bed is usually not homogeneous since it usually folds when tilting, fractured, or compressed. For a recently created flat bed it would have a dip of 0° and a directionless strike. Dip is the angle at which a planar feature is inclined to the horizontal plane it is measured in a vertical plane perpendicular to the strike of the feature.Ī bed will be used in this description. Strike and dip are used to describe the orientation of a rock bed, fault, fracture, cuestas, igneous dikes, and sills.
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