The film explores the origins of various rocks found in the Grand Canyon, revealing that many rocks are formed from ancient sand dunes that hardened over time. It discusses how to interpret clues in ...

The Nishisonogi metamorphic rock was thought to belong to the same geological formation as the Sanbagawa belt. b: Enlarged map of Saikai city.

Today, rocks can function as both a carbon source and sink. "Many people, including myself, considered metamorphic decarbonation to be a background process in the recycling of carbon," Penman said.