ENVIRSC 1G03 Study Guide - Final Guide: Quick Clay, Eastern Canada

• School: McMaster University
• Department: Environmental Science
• Course: ENVIRSC 1G03
• Professor: Maureen Padden

Document Summary

If load becomes too heavy, the clay collapses: problem: has a tendency to instantaneously liquefy, forms from marine clay deposits (high salt content when deposited) Salt concentration is an important factor changes clay from liquid to solid: with dropping sea level, clay is exposed, when it had previously been very deep. Pushed down by glaciers ends up bouncing back up. How did the quick clay event start: farmer was building a basement, dug out the fill (composed of clay) and placed it by the lake. Initial failure caused by collapse of soil masses into the lake. What are the implications for planning communities on quick clays in other parts of the world (such as eastern canada): wave of clay flooded a nearby village. Remaining quick clay had to be removed through (cid:710)blasting(cid:711: nationwide mapping of quick clay deposits, test groundwater (salinity, limit the depth allowed for excavation and digging.