Concept
Alternate Profiles
Different views and formats:
Alternate Profiles ?Profiles (alternative information views) encoded in various Media Types (HTML, text, RDF, JSON etc.) are available for this resource.
- Preferred Labelskos:prefLabel
alkali olivine basalt
- URI
- http://resource.geosciml.org/classifier/cgi/lithology/alkali-olivine_basalt ↗Go to the persistent identifier link
- Within Vocab
- Simple Lithology
| Preferred Labelskos:prefLabel | alkali olivine basalt |
|---|---|
| Definitionskos:definition | Alkali olivine basalt is silica-undersaturated, characterized by the absence of orthopyroxene, absence of quartz, presence of olivine, and typically contains some feldspathoid mineral, alkali feldspar or phlogopite in the groundmass. Feldspar phenocrysts typically are labradorite to andesine in composition. Augite is rich in titanium compared to augite in tholeiitic basalt. Alkali olivine basalt is relatively rich in sodium. |
| Exact MatchexactMatch |
http://inspire.ec.europa.eu/codelist/LithologyValue/alkali-OlivineBasalt
|
| Broaderbroader |
basalt
|
| See AlsoseeAlso | Simple Lithology |
| Notenote | The definition of tholeiite and alkali basalt here are more prescriptive than those found in most reference authorities. This is to actually provide some descriptive criteria to allow assignment of rocks on a hand sample basis to the tholeiite or alkali basalt categories if detailed petrographic or chemical data are available. |
| Is Defined ByisDefinedBy | Simple Lithology |