A lithologic log of the Oak Grove core, northeastern Virginia

The Oak Grove core was taken as part of a multifaceted project to develop a stratigraphic and tectonic framework for the Rappahannock drainage basin, northeastern Virginia. This core is at present the only continuously cored Cretaceous and Tertiary section on the Northern Neck of Virginia and is one of the few deep cores in the entire Salisbury embayment. The core includes most of the Chesapeake Group sediments (Miocene part) in the Oak Grove area, the Pamunkey Group (Paleocene and Eocene) and nearly all of the Potomac Group (Lower Cretaceous part) (see Table 1).