GEOL 106 Study Guide - Final Guide: Shield Volcano, Pyroclastic Flow, Tephra

• School: Queen's University
• Department: Geological Sciences and Geological Engineering
• Course: GEOL 106
• Professor: John Hages

Document Summary

Risk analysis for volcanoes (continued: understand the hazard in general (done previously), determine the risk from that hazard in a particular area (risk = ph x sh). Locate and determine the nature of volcanoes in the area. Most volcanoes occur at plate-tectonic margins; others are related to hotspots. Determine the shape of the volcano (eg, fissure, shield volcano, stratovolcano). Determine the composition of the rock (eg, mafic, felsic). Study the history of volcanoes in the area. Determine the nature of past eruptive deposits (eg, tephra, pyroclastic flow, lahar). Determine the recurrence interval using 14c dating (wood) and k-ar dating (minerals). Determine the geological and geographic factors in the area. What are the risks of a tsunami (eg, applicable only for volcanos on island arcs). Determine the potential human interactions with the volcanoes in the area.