Keyword Definition

Fine grained igneous rock than contains less than 90 percent mafic minerals, between 10 and 60 percent feldspathoid mineral in the QAPF fraction and has a plagioclase to total feldspar ratio greater than 0.5. Includes rocks classified in QAPF field 13 and 14 or chemically in TAS field U1 as basanite or tephrite.

LeMaitre et al. 2002

Parents: Fine grained igneous rock (86)

Children: Basanite (24); Phonolitic basanite (191); Phonolitic tephrite (193); Tephrite (250)

[Description taken from GeoSciML SimpleLithology201012.rdf]

Hierarchical classification

Sample >> Lithosphere >> Rock >> Whole >> Rock >> Igneous >> Fine grained >> Tephritoid


Basanite | Phonolitic basanite | Phonolitic (tephrite) | Tephrite

Category: Analysed material

The different kinds of sample material collected in the field have been classified hierarchically. Examples: “till”, “soil”, “vegetation”. Taken from the “Sample_Types_SHARED” database table.

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