Earth material that is composed of one or more single rock types
Basalt lava and andesite lava

http://data.bgs.ac.uk/id/EarthMaterialClass/RockComposite/BLAL
Statushttp://data.bgs.ac.uk/ref/CurrentStatus/CURRENT
Has parthttp://data.bgs.ac.uk/id/EarthMaterialClass/RockName/ANDCLA
http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/BCLAVA
Schemahttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockComposite
Label"Basalt lava and andesite lava" language=en 
See alsohttp://dbpedia.org/resource/Andesite
http://dbpedia.org/resource/Basalt
http://dbpedia.org/resource/Lava
Typehttp://www.w3.org/2004/02/skos/core#Concept
Definition"BASALT LAVA AND ANDESITE LAVA" language=en 
Is in schemehttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockComposite
Preferred label"Basalt lava and andesite lava" language=en 

namespaces used
bgsienBGS RCS Named Rock
bgsiepBGS RCS Rock Component
bgsrBGS Schemas
bgsrcBGS Current Status Codes
bgsreBGS RCS Earth Material Classes
bgsrgBGS Geochronology
bgsrlBGS Lexicon of Named Rock Units
bgsrmBGS 1:625 000 Digital Geological Map
dctDublin Core terms
rdfResource Description Framework
rdfsResource Description Framework - Schema
skosSimple Knowledge Organization System
xsdXML Schema Data Type