GL101 Lecture Notes - Lecture 9: Aerial Photography, Reflection Seismology, Azimuth
Document Summary
Structure is so large that only a portion is visible for a vantage point. Aerial photography, satellite and gis imagery, gps, seismic reflection data, drill holes, etc. The compass direction of the line produced by the intersection of an inclined rock later or fault with a horizontal plane. Generally expressed in azimuth form, as an angle clockwise from north. Angle of inclination of surface of a rock unit or fault measured from a horizontal plane. Includes both the inclination and the direction toward which the rock is inclined (direction that water will run down the rock surface) Dip will always be at 90 degree angle to the strike. Rocks are often bent into a series of wave-like undulations called folds. As if you were holding both ends of a piece of paper, and then pushed them together. Most folds result from compressional stresses that shorten and thicken the crust. Limbs refers to the two sides of a fold.
