Virginia Institute of Marine Science
Geological Society of America Bulletin
Three generations of the ancestral Susquehanna River system have been mapped beneath Chesapeake Bay and the southern Delmarva Peninsula. Closely spaced seismic reflection profiles in the bay and boreholes in the bay and on the southern Delmarva Peninsula allow detailed reconstruction of each paleochannel system. The channel systems were formed during glacial low sea-level stands, and each contains a channel-fill sequence that records the subsequent transgression. The trunk channels of each system are 2 to 4 km wide and are incised 30 to SO m into underlying strata; they have irregular longitudinal profiles and very low gradients within the Chesapeake Bay area.
Atlantic Coastal Plain; buried channels; Cenozoic; Quaternary geology
Colman, Steven M.; Halka, Jeffrey P.; Hobbs, C.; Mixon, Robert B.; and Foster, David S., Ancient channels of the Susquehanna River beneath Chesapeake Bay and the Delmarva Peninsula (1990). Geological Society of America Bulletin, 102, 1268-1279.