kimmeridgian soil

champagne soils, white chalk soils; "chalk crescent, the area that spans from the British cliffs to Champagne was the basin of a vast prehistoric sea some 65 million years ago. When the water receded, it left behind minerals like quartz and zircon, fossils and sea urchins, sea sponges and other sea animals,"---producing vast quantities of (CHALK). (wine bible)