1. Shale composed wholly or chiefly of clayey material which becomes clay again on weathering. 2. Consolidated sediment composed of up to 10% sand and having a silt to clay ratio of less than 1:2.
Related terms:
1. Shale composed wholly or chiefly of clayey material which becomes clay again on weathering. 2. Consolidated sediment composed of up to 10% sand and having a silt to clay ratio of less than 1:2.
Related terms: