Concept
Alternate Profiles
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- Preferred Labelskos:prefLabel
chalk
- URI
- http://resource.geosciml.org/classifier/cgi/lithology/chalk ↗Go to the persistent identifier link
- Within Vocab
- Simple Lithology
| Preferred Labelskos:prefLabel | chalk |
|---|---|
| Definitionskos:definition | A generally soft, white, very fine-grained, extremely pure, porous limestone. It forms under marine conditions from the gradual accumulation of skeletal elements from minute planktonic green algae (cocoliths), associated with varying proportions of larger microscopic fragments of bivalves, foraminifera and ostracods. It is common to find flint and chert nodules embedded in chalk. |
| Exact MatchexactMatch |
http://inspire.ec.europa.eu/codelist/LithologyValue/chalk
|
| Broaderbroader |
limestone
|
| Relatedrelated |
pure carbonate mudstone
|
| See AlsoseeAlso | Simple Lithology |
| Is Defined ByisDefinedBy | Simple Lithology |