4th Year Geology Trip Around the Cornish Coast

Last week the 4th Year Geologists ventured out for their second field trip of the year. They visited two locations on the Cornish coast, where they could apply the knowledge they developed during the first year of their GCSE course, identifying minerals and interpreting igneous, metamorphic and sedimentary rocks.

They began the day at Praa Sands, examining the textures and minerals within a porphyritic dyke to understand its formation and how its emplacement had affected the surrounding rocks of the Mylor Slate Formation.

The afternoon was then spent at Godrevy examining the formation of an unconformity and using the sedimentary structures and textures to interpret the sea-level changes shown by the raised beach.