. "CLYCA"@en . "0.0"^^ . "stable"@en . "Clyde Catchments Subgroup"@en . . "Girvan Formation [Obsolete: use CLYCA]"@en . "Includes the fluvial deposits of the River Clyde and its tributaries. \r\n\r\nThe deposits include alluvium and river terrace deposits of the Clyde Valley Formation and fluvial deposits of the Strathendrick Formation and other units defined simply by lithogenetic categories. The deposits of the subgroup comprise gravel, sand, silt, peat and head. Rock types found in clasts are principally of Carboniferous and Devonian strata (sandstone, siltstone) with volcanic (basalt) and intrusive igneous rocks (microdiorite) of Midland Valley provenance. Variable but generally minor components of Dalradian metasedimentary and Caledonian igneous rocks derived from the Grampian Highlands are present. Southern Uplands sourced greywacke sandstone and siltstone and Caledonian igneous rocks form a component of clastic fluvial deposits in parts of catchments close to the Southern Uplands. \r\n\r\nA suite of fluvial (alluvium and river terrace deposits) and associated organic and lacustrine sediments that contain clasts derived from Palaeozoic rocks and glacigenic deposits cropping out in the catchment of the River Clyde and other rivers flowing directly to the Firth of Clyde, including the River Leven, and Waters of Girvan, Ayr and Irvine. \r\n\r\nDevensian to Holocene (MIS 2-1)."@en . "Clyde Catchments Subgroup"@en . "Up to 25 m."@en . . . "Gravel and sand with subsidiary clay, diamicton, peat and silt. Stratified superficial deposits. Occurs onshore. Formed during the Devensian Stage - to - Holocene Epoch (Quaternary Period) (.116-0 Ma BP)."@en . . . "Generally the ground surface, but units of this Subgroup interfinger locally with units of the British Coastal Deposits Group."@en . . "Unconformable contacts with units of the Midland Valley, Mearns, Central Grampian and Southern Uplands Glacigenic subgroups, and bedrock."@en . . "0.116"^^ . .