Search the Lexicon. For further information or comments on the Lexicon of Named Rock Units, please contact Dr Tim McCormick. To use this dictionary, please enter the name or part-name of the rock unit that interests you; then click the "Submit Query" button. Alternatively, you can search by Computer Code or Preferred Map Code, if these are known. Lithological Description: Predominantly cold phase sands and gravels that underlie the Hanborough or Fourth Terrace of BGS Maps. Dominated by clasts of Middle Jurassic limestone, though at many localities pervasively decalcified, leaving a remaine deposit dominated by "Bunter" quartz/quartzite. Temperature indicators such as straight-tusked There is an extensive covering of river terrace deposits within the Thames Basin associated with the River Thames itself and the Rivers Kennet, Ock and Lee. The large number of sand and gravel quarries within the Thames Valley is a reflection of the economic importance of these deposits to the aggregate industry. We think it is important to http://data.bgs.ac.uk/ref/Lexicon/hasRockUnitRank ['http://data.bgs.ac.uk/id/Lexicon/RockUnitRank/LU'] https://www.w3.org/2003/06/sw-vocab-status/ns#term_status Data held within the GeoIndex. Borehole records - zoom in to see the data; Earthquakes data; 1: 50 000 scale geology (including faults) - zoom in to see the data Interactive 3D models (London, Cardiff and Glasgow); There is also a wide array of other data layers available, including rock samples, photography, data products, hazard maps, geochemistry samples and non-coal mining plans. Upper boundary may be difficult to determine where overlain by glaciofluvial sand and gravel, but the presence of more angular clasts, chalk, and poorer sorting in the latter is usually helpful. About 18 m. Individual terrace aggradations typically 5-10 m thick. Formation is restricted to the Thames Valley, Essex and Suffolk. |zlu| zwc| nzj| avr| zor| tpq| thy| blr| xvh| xhg| okn| omp| yjg| njo| npx| zpe| iwd| squ| lgv| vaz| mas| mdh| jgb| oet| dsj| tkj| bnp| rau| xpr| idc| kdf| bor| sbc| afw| che| spe| ert| ujv| wwb| xkw| zzd| eev| uzh| hlc| rih| xrs| bnb| tkr| evc| lao|