BGS Rock Classification Scheme

Cobbles, bouldery [Unlithified Deposits Coding Scheme]

Code LB
Description Cobbles, bouldery [Unlithified Deposits Coding Scheme]
Qualifiers bouldery      
Definition Siliciclastic sediment, with >50vol% clasts from pre-existing siliceous rocks. Clasts >50% or predominantly boulders, >256mm & cobbles 64 to 256mm in equal proportions. Composition not defined
Linked data http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/LB

CAVEAT

"Thumbnail" definitions attached to some of the table entries are an interim attempt to provide simple short descriptions of the "unqualified" rock types presented within the BGS Rock Classification Scheme. Every effort has been made to ensure accuracy and consistency but minor contradictions or omissions might be present. The BGS welcomes any feedback pointing out such minor imperfections and/or providing constructive comment and suggestions for improvement of the definitions. In the first instance such feedback should be directed to Dr Tim McCormick.