The Black Earth—Peridotite to Basalt
Lecture no. 18 from the course: The Origin and Evolution of Earth: From the Big Bang to the Future of Human Existence
Taught by Professor Robert M. Hazen | 34 min | Categories: The Great Courses Plus Online Science Course
Trace the evolution of Earth’s first rocks, which crystallized from the young planet’s seething magma oceans. Peridotite was the earliest major rock type to form. Discover why peridotite is now found mostly deep in the mantle, while a related rock called basalt covers 70 percent of Earth’s surface.