In this video students will learn about unconformities and how they help geologists to discover episodes of volcanism, uplift, erosion and deposition that provide evidence for plate tectonics during Earth's history. Through video and graphic animation students will learn to identify unconformities and come to understand how they form.

Originally released by Mazzarella Media, 2015. Streaming video file encoded with permission for digital streaming by Infobase on July 16, 2018.

Unconformities (2:43); .