Matrix: Brown to reddish-brown clayey matrix, optically active (weak?), moderately to poorly sorted, with 1-3% coarse clay/fine silty calcareous (high birefringence) and translucent brown grains (biotite?); foraminifera absent; some clay nodules observed

Non-plastic inclusions:

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  Dolomite – 3% fine sand-sized, 5-7% v. fine sand to coarse silt-sized, subangular to angular, some weathered, some with distinct rhombohedral crystals; high birefringence, with granular/agglomerated texture, medium/low relief; some grains showing preferred orientation


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  Iron oxide – 1% dark brown color, mostly translucent reddish-brown birefringence but rarely opaque in center, mostly fine silt-sized rarely fine sand-sized minerals

Voids: 3% mostly fine sand-sized, thin calcitic formation on margins