Rocks that have been altered by heat and pressure are called metamorphic rocks. This heat and pressure is mostly seen at plate margins where regional and hydrothermal metamorphism occur. IN this lecture we look at how rocks change when we apply various degrees of heat and pressure and release them. The resulting rocks are not only beautiful, and used in masonry or as table tops, they also contain the minerals that drives economic geology, such as iron, copper, lead, silver and gold. We will investigate where we can find these rocks in the Macquarie Arc located in central western NSW.
This PD will take no more than 30-40 minutes of your time. Extra time for Q&A can follow as required.