BGS Rock Classification Scheme
Siliciclastic arenaceous rock - In the Rock Classification Scheme, these are siliciclastic rocks that are predominantly in size range 32 µm - 2 mm, with less than 75% of clasts smaller than 32 µm and less than 25% larger than 2 mm. British Geological Survey Research Report RR/99/03, section 2.2 and fig. 3.
| Code | ARENR |
|---|---|
| Description | Siliciclastic arenaceous rock - In the Rock Classification Scheme, these are siliciclastic rocks that are predominantly in size range 32 µm - 2 mm, with less than 75% of clasts smaller than 32 µm and less than 25% larger than 2 mm. British Geological Survey Research Report RR/99/03, section 2.2 and fig. 3. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Siliciclastic arenaceous sedimentary rock, grains >50% from pre-existing siliceous rocks, Grains >50% or predominantly sand-grade, 0.032 to 2mm. |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/ARENR |
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.