PRELIMINARY FINDINGS OF A RECENTLY DISCOVERED MESOZOIC RIFT BASIN CONCEALED BENEATH COASTAL PLAIN COVER, BERTIE COUNTY, NORTH CAROLINA
We investigated and sampled core from well BE-110 in the repository of the NC Geological Survey. Investigation techniques include magnetic susceptibility, thin section petrography, and major and trace element geochemical analysis. Statistical analyses of susceptibility data demonstrate that Triassic strata are distinct from overlying Cretaceous strata. Triassic material has a mean susceptibility of -27.64 (SI), contrasted by a Cretaceous mean value of 46.49 (SI). Initial petrographic analysis suggests a likely tectonic provenance of recycled orogen, sub classified as a collision orogens or foreland uplift, based upon the abundance of quartz clasts identified during point counting. Geochemical studies are focusing on immobile trace element populations (e.g. Th, Zr, La), their respective ratios, and interpretations of these data regarding provenance.
Our results provide insight into the complex tectonic and sedimentary processes operating in continental extensional regimes. Ranging over 1700 km on the eastern seaboard of North America, Mesozoic rift basins offer valuable insight into the tectonic history of the region. These basins are also valuable to society, particularly as water aquifers and hydrocarbon reservoirs.