Oxidised orange-red fabric; brown (PPL), dark brown (XP).
Semi-homogenous matrix, non-calcerous with low optical activity.
- ca. 30-45%
Inclusions
Quartz (++; mono+, poly-, weathering and alteration), sedimentary rock detritus (+; quartz arenite, weathering and alteration), chert/flint (+), metamorphic rock detritus (+; low grade, weathering and alteration), possible igneous rock (--; granite), feldspars (-; plagioclase, microcline, weathering and alteration), muscovite mica (+-; el & eq), amphibole/pyroxene (--), O/Fe (+), clay pellets (+; iron-rich).
The coarse fraction consists of medium sand, the fine fraction consists of very fine to fine sand. Grains are generally rounded to subangular. Overall the fabric is moderately to well sorted and moderately to well orientated, close to single spaced.
- ca. 40-50%
Voids
Many vughs of various sizes, very well aligned, calcite infill.
- ca. 15-20%
Diagnostic features
The fabric is characterized by a semi-homogenous oxidised matrix with low optical activity and high porosity. Dominant quartz inclusions with frequent sedimentary and metamorphic rock detritus, chert/flint, opaques/iron oxides and iron-rich clay pellets, common muscovite mica, few feldspars, and rare amphibole/pyroxene and possible granite fragment. Overall moderately well sorted fabric.