An in-depth look at igneous rocks and how they are formed deep in the earth’s crust through a process of melting and recrystallization. The programme covers volcanic rocks, igneous rocks of dykes and sills, plutonic rocks such as granite, syenite, gabbro and ultramafic rocks.
Discover the wonders of our Earth. The third classification of rocks are those which were formed deep in the earth’s crust by melting and then re-crystallization. These rocks include volcanic rocks igneous rocks of dykes and sills and plutonic rocks such as granite syenite gabbro and ultramafic rocks. Many specimens are discussed that are not often found in classroom labs or textbooks. The Physical Geography series is a series dealing with natural phenomenon such as volcanoes earthquakes caves rocks geysers and glaciers presented by Dr. Laurence J. Jankowski. He is an Associate Professor at Bowling Green State University in Ohio and a member of the National Science Teachers Association and the National Association of Geology Teachers. His prior achievements include the Science Teacher of the Year Award from the Ohio Academy of Science and Outstanding Professor Award from Bowling Green State University.