granitic gneiss - All Posts

On the Rocks – A Day at Nottoway Falls

By Chuck Bailey On October 7, 2016
In Academics, Faculty & Staff Blogs 
In this photo an older biotite-rich gneissic inclusion is surrounded by the younger granitic gneiss. Both rocks are strongly lineated (oriented NE to SW). Strain is heterogenous as evidenced by the deflection of the biotite-rich gneiss in a cryptic high-strain zone. The asymmetry and offset along the discrete fault is consistent with right-lateral (dextral shear). There is geological craziness at the far end of the biotite-rich gneiss.
In August, I described a set of cascades that form a major knickpoint on the Nottoway River in the Southside Virginia Piedmont. Last Saturday,
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Knickpoint on the Nottoway

By Chuck Bailey On August 24, 2016
In Faculty & Staff Blogs, Research 
an elevation map of Nottoway falls and nottoway river
Deep in the heart of Southside Virginia lies a bedrock outcrop of tremendous size. Quality outcrops are rare in the Piedmont, but between the
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