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Surface feature of a karst landscape.
|What is porous limestone?||Limestone that contains small holes that can hold water.|
|What are pervious joints?||Joints that allow water to pass through.|
|One surface feature.||Limestone pavement. Area of flat, exposed blocks that are separated by deep, intersecting joints. Burren in Co. Clare.|
|What is carbonation?||Carbonation= most important process in the formation and shaping of limestone pavement. Glaciers strip away the overlying soil, leaving the underlying limestone exposed to weathering by carbonation. Oxygen and carbon dioxide in the air mix forming a wea|
|What is percolation?||The carbonic acid that falls on the limestone, before before flowing through its cracks and joints. The percolated water dissolves the rock causing it to widen.|
|The surface features of limestone pavement.||The widening and deepening of the joints for a series of intersecting lines known as grikes. Once a grike develops, more acidic water drains into the cracks causing it to deepen. When the grikes deepen the remaining stone is divided into sections called|