GEO 101 Lecture Notes - Lecture 17: Syncline, Compressive Stress, Anticline
27 Mar 2017
School
Department
Course
Professor
Document Summary
From last time: earthquake locations, depths, and magnitudes, earthquake hazards. Rock returns to original shape once stress is removed: plastic deformation: Rock is permanently deformed will not return to its original shape. Factors controlling deformation: temperature and pressure conditions, higher temperature and pressure leads to ductile deformation, lower temperature and pressure leads to brittle deformation. Emily-paige montgomery: amount of time the stress is applied epmontgomery@crimson. ua. edu, stress applied slowly leads to ductile deformation, stress applied quickly leads to brittle deformation, rock composition/strength. Review questions: if stress is applied slowly, materials tend to exhibit brittle deformation, true, false, ductile deformation in rocks occurs at high temperatures and pressures, true, false. Emily-paige montgomery epmontgomery@crimson. ua. edu: limb: arms of the fold, axial plane: imaginary plane that divides the fold in half, hinge line: line connecting points of maximum curvature. Other types of folds: dome, upwarped rock layers, basin, downwarped rock layers.
