Geology — Loire Wines
The Loire River Valley’s geology is a diverse, 1,000-km sequence transitioning from the ancient volcanic Massif Central through Mesozoic limestone basins to the metamorphic Armorican Massif. It features distinctive sedimentary layers like tuffeau stone, extensive alluvial terraces, and varied soil types that define its rich terroir and create a unique, often steep-sided, river valley.







