EESC31H3 Study Guide - Midterm Guide: Ice Rafting, Clay Minerals, Turbidity Current
Document Summary
Exxon valdez oil spill: the oil tanker (exxon valdez) with full load of oil sailed through. Valdez narrows, the captain changed his sea line in order to avoid icebergs from. It is because of retreating of columbia glacier in 1980s, large amount of icebergs were released and floating on the sea. The icebergs related to exxon valdez oil spill is one of the columbia glacier icebergs, wind and ocean current drove it to valdez. It is a current of turbid water which as a result of a large meltwater stream underneath an ice entering a sea or an ocean. A crater created by vertical escape of gas or overpressure fluid water come up from deep below the sea floor which triggered by ice bergs. The process creates a tube, and then sediments fall in, a crater forms. It is sediment which transported by floating ice and released into water body.
