ISNS 2367 Lecture 5: ch 10
12 Nov 2017
School
Course
Professor
Document Summary
Moving and dynamic, moving seaward, landward, and along the shore by nearshore wave and current action: eustatic - worldwide change in sea level that may submerge previous coasts or expose sea floor, two different classifications. Decided often by being active/leading or passive/trailing. In us, eastern coasts are passive and depositional. Western coasts are active and are erosional: primary coasts - formed by: Erosion of the land by running surface water, wind, or land ice followed by sinking land or rising sea level. Uplift and subsidence of the land by earthquakes and associated crustal movements: secondary coasts. Erosion due to waves, currents, or dissolving action of seawater. Deposition of sediments by waves, tides, and currents. Sea stacks - small rock islands and tall, slender pinnacles of resistant rocks. As coasts erode, they may make depositional bars which grow to become barrier islands: fill-in the blank sentences. Formed through erosion by water, wind, or ice. Formed from river, glacier, or wind deposits.
