This photograph was taken on Fish Creek Trail in the Sierra Nevada, California, and show...

This photograph was taken on Fish Creek Trail in the Sierra Nevada, California, and shows two black metavolcanic erratics on granodiorite bedrock that has been intruded by a white dike. Using your knowledge of igneous rocks and processes, glacial features, and relative dating principles, provide a geologic history of this area based on what is shown in this image.