Concept
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- Preferred Labelskos:prefLabel
sub feldspathic detrital mode
- URI
- http://resource.geosciml.org/classifier/cgi/compositioncategory/sub_feldspathic_detrital_mode ↗Go to the persistent identifier link
- Within Vocab
- Composition Category
| Preferred Labelskos:prefLabel | sub feldspathic detrital mode |
|---|---|
| Definitionskos:definition | Sandstone petrographic composition term indicating that detrital mode for clastic rock (Q-F-L) includes less than 50 percent lithic fragments, between 75 and 95 percent quartz (thus less than 25 percent feldspar). This corresponds to the subarkose field of Folk (1968), the 75 percent quartz boundary is consistent with the quartzsose composition as defined in the mineralogic compostion terms vocabulary, but if more than a few percent 'matrix' or cement is present, this is not necessarily equivalent to the mineralogical composition term. |
| See AlsoseeAlso | Composition Category |
| Is Defined ByisDefinedBy | Composition Category |