Nature & geography・Zushi & Hayama
Hayama Group
Also known as: 葉山層群
A belt of Neogene-Miocene marine strata running through the central Miura Peninsula, made of mudstone and sandstone deposited on the seafloor roughly 15 to 18 million years ago. From oldest to youngest it is divided into the Morito, Abuzuri, Oyama, Kinugasa, and Yabe formations, the oldest bedrock exposed on the peninsula.
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