BGS Rock Classification Scheme
Radiolarite - A type of siliceous rock which is predominantly composed of radiolaria. It is the lithified equivalent of radiolarian-ooze. British Geological Survey Research Report RR/99/03, section 8.2 and fig. 12.
| Code | RADLAR |
|---|---|
| Description | Radiolarite - A type of siliceous rock which is predominantly composed of radiolaria. It is the lithified equivalent of radiolarian-ooze. British Geological Survey Research Report RR/99/03, section 8.2 and fig. 12. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Non-clastic siliceous sedimentary rock with >50% silica of biogenic or chemical origin, porosity 50 to 90%. Silica dominantly opal-CT, Particles predominantly radiolaria. (0.01mm). |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/RADLAR |
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.