Practical guide for volcano observatories on paleomagnetic sampling of pyroclastic deposits from active volcanoes

Geoffrey A Lerner , R. Marcela Lira-Beltrán

This brief guide is designed to teach workers at observatories of volcanoes exhibiting explosive activity how to take samples of pyroclastic deposits for paleomagnetic studies. Paleomagnetism is a powerful tool for studying volcanoes, both dormant and currently active. Studies of the rock magnetic and paleomagnetic characteristics of volcanic rocks can provide important information about volcanic deposits and the processes that deposit them. This information can include important characteristics such as emplacement temperature, age, and flow direction. To use these techniques, a specific type of sampling is required. Here we describe reasons for taking paleomagnetic samples and how to do so in the field without the use of specialized equipment.