U.S. flag

An official website of the United States government

icon-dot-gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

icon-https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Depth to Quaternary regional unconformities offshore of the Delmarva Peninsula, including Maryland and Virginia state waters

Geologic structure and isopach maps were constructed by interpreting over 19,890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic reflection profiles from the continental shelf of the Delmarva Peninsula, including Maryland and Virginia state waters. In this region, Brothers and others (2020) interpret 12 seismic units and 11 regional unconformities. They interpret the infilled channels as Late Tertiary and Quaternary courses of the Susquehanna, Potomac, Rappahannock, York and James Rivers and tributaries, in addition to a broad drainage system. These regional unconformities form a composite unconformity interpreted as the Quaternary-Tertiary (Q-T) unconformity. A depth to Tertiary (Uqt) and total Quaternary sediment thickness (Q) isopach are included with this data release. Other products in this data release include thickness of an early Pleistocene unit (Qbd), thickness of a Pleistocene highstand system tract (Q2), thickness of a post last glacial maximum (LGM) fluvial/estuarine unit (Qcch), thickness of Holocene to modern marine sediment (Qmn), depth to the base of the Persimmons Point and Ocean City paleochannels (U4), depth to the base of the Exmore and Belle Haven paleochannels (U6), depth to the base of the Eastville paleochannel and tributaries (U8), depth to the base (fluvial unconformity) of the Cape Charles paleochannel and tributary paleochannels (fluvial unconformity, U10) and the base (tidal ravinement) of associated Holocene tidal and back-barrier deposits (tidal ravinement surface, U10.5).

Get Data and Metadata
Author(s) David S Foster orcid, Laura Brothers orcid, Wayne E Baldwin orcid, Elizabeth P Pendleton orcid
Publication Date 2023-05-19
Beginning Date of Data 1974-05-15
Ending Date of Data 2015-07-14
Data Contact
DOI https://doi.org/10.5066/P9GQY0ZN
Citation Foster, D.S., Brothers, L., Baldwin, W.E., and Pendleton, E.P., 2023, Depth to Quaternary regional unconformities offshore of the Delmarva Peninsula, including Maryland and Virginia state waters: U.S. Geological Survey data release, https://doi.org/10.5066/P9GQY0ZN.
Metadata Contact
Metadata Date 2023-05-19
Related Publication
Citations of these data

Loading https://doi.org/10.1016/j.margeo.2020.106287

Access public
License http://www.usa.gov/publicdomain/label/1.0/
Loading...
Harvest Source: Coastal and Marine Geoscience Data System
Harvest Date: 2025-01-06T09:34:50.952Z