Measuring extensional paleorifting in the Scottsville Basin

The Scottsville Basin is a small Mesozoic rift basin formed by extensional faulting in eastern North America. This basin is a very small geologic structure located in central Virginia between the Blue Ridge and Piedmont provinces.  It is bounded by a normal fault on its western border and a shallow normal fault on the eastern border; this segmented half-graben structure is generally indicative of extensional rifting. The Scottsville basin is roughly 130 km², with strata across the surface increasing in thickness from west to east. This is likely indicative of syndepositional rifting, which can be seen in Fig. 1 below. The half-grabens that make up the deeper structure of the basin pass through isothermal closure temperatures that can be measured using isotopic ratios.

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