ESS102H1 Chapter Notes - Chapter 8: Differential Stress, Modelling Clay, Structural Geology
Document Summary
Anticline is most commonly formed by the upfolding, or arching, of rock layers. Synclines are commonly found in association with anticlines are downfolds, or troughs. Ways to describe folds: basic folds = symmetrical, asymmetrical fold = overturned, an overturned fold that lies on its side = recumbent. Folds eventually die out; some folds plunge because the axis of the fold descends into the ground; anticlines and synclines can plunge too. Note: ridges and valleys are not necessarily associated with anticlines or synclines. Reverse faults: dip-slip faults in which the hanging wall block moves up relative to the footwall block; has angle of 45 degrees or more. Thrust fault: when a reverse fault has an angle of dip less than. Because the movement along the san andreas fault causes the crustal block on the opposite side of the fault to move to the right as you face the fault, it is called a right-lateral strike-slip fault.
