| Compositionally, the turbidites are mostly feldspathic litharenites with trace amounts of serpentinite, anorthosite and mafic volcanic clasts. |
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| Neither sample showed optical evidence for postformation alteration in the form of chloritized veins or sericitization of feldspathic minerals or micas. |
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| The lower member is dominated by a thick basal dolomite and passes transitionally upwards into the psammitic upper member, which is largely feldspathic schist and quartzite. |
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| Some varieties include feldspathic greywacke, which is rich in feldspar, and lithic greywacke, which is rich in tiny rock fragments. |
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| Sandstone clasts are most commonly feldspathic, with medium-to-coarse arkosic texture. |
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| Formulations were later developed based on kaolin with quartz, feldspars, nepheline syenite or other feldspathic rocks. |
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| The MSU is modelled as being a southward plunging, lenticular body that runs parallel to, but above, the coarse grained feldspathic peridotite intrusion. |
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