| http://data.bgs.ac.uk/ref/Lexicon/hasPredominantAge | ['http://data.bgs.ac.uk/id/Geochronology/Division/SO'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasOldestAge | ['http://data.bgs.ac.uk/id/Geochronology/Division/SO'] |
| http://www.w3.org/2004/02/skos/core#inScheme | ['http://data.bgs.ac.uk/ref/Lexicon'] |
| http://www.w3.org/2004/02/skos/core#broader | ['http://data.bgs.ac.uk/id/Lexicon/NamedRockUnit/KMF'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasYoungestAge | ['http://data.bgs.ac.uk/id/Geochronology/Division/SO'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasBroaderPredominantAge | ['http://data.bgs.ac.uk/id/Geochronology/Division/S'] |
| http://www.w3.org/2004/02/skos/core#prefLabel | ['Helm Member'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasYoungestAgeValue | ['419.0'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasUpperBoundaryDefinition | ['Base of the lowest thick and unreddened sandstone bed from the upper part of the Kirkby Moor Formation.'] |
| http://www.w3.org/2000/01/rdf-schema#label | ['Helm Member'] |
| http://www.w3.org/1999/02/22-rdf-syntax-ns#type | ['http://www.w3.org/2004/02/skos/core#Concept'] |
| https://www.w3.org/2003/06/sw-vocab-status/ns#term_status | ['stable'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasLowerBoundaryDefinition | ['Base of the lowest reddened laminated siltstone unit where it overlies thickly bedded, unreddened, coarse- to medium-grained sandstone forming the lower part of the Kirkby Moor Formation.'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasRockUnitRank | ['http://data.bgs.ac.uk/id/Lexicon/RockUnitRank/M'] |
| http://www.w3.org/2004/02/skos/core#notation | ['1HELM'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasOldestAgeValue | ['422.7'] |
| http://www.w3.org/2004/02/skos/core#definition | ['Siltstone with subsidiary mudstone and sandstone and trace mud-flake conglomerate. Stratified bedrock. Occurs onshore. Deposited during the Pridoli Epoch (Silurian Period) (422.7-419 Ma BP).'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasLithologyDescription | ['Laminated siltstone and mudstone with thinly interbedded, fine-grained sandstone that is pervasively reddened.'] |
| http://data.bgs.ac.uk/ref/Lexicon/hasThicknessDescription | ['About 250m'] |