GEO 311 Study Guide - Midterm Guide: Thrust Fault, San Andreas Fault, Plate Tectonics
Document Summary
Fundamental definitions: structure, tectonics (similarities, differences, latin & greek roots) Structure exam 1: structural geology- essential tool in unraveling geologic history of any given area or region within the earth. Looking at the architecture of the earth --> look at it and unmake it to see how the structure was made: addresses form, geometry, symmetry, strength/mechanical properties of crustal materials. If straddling the fault the block on the left side moves toward the observer: dextral movement- right-handed meaning the block on the other side of the fault moves to the right. Thrust fault systems: allochtonous vs. autochtonous, allochtonous- regional thrust sheets that are far out of place. Hanging wall flat on footwall flat (flat on flat) Hanging wall flat on footwall ramp (flat on ramp) Hanging wall ramp on footwall ramp (ramp on ramp) (1) flat movement is not reflected in stratigraphic separation until the hanging wall flat moves onto another unit at the footwall ramp.
