Dataset description: Delmarva

Depth to Quaternary regional unconformities offshore of the Delmarva Peninsula, including Maryland and Virginia state waters. This dataset contains six grids: 1) Uqt, the Quaternary-Tertiary composite unconformity; 2) U4, the subaerially and fluvially eroded lower boundary of the Persimmons Point and Ocean City Paleochannels; 3) U6, the subaerially and fluvially eroded lower boundary of the Exmore (Qx) and Belle Haven Paleochannels; 4) U8, the subaerially and fluvially eroded lower boundary of the Eastville Paleochannel and tributaries (Qe);5) U9, the transgressive ravinement surface above Qe and at the base of a Pleistocene highstand system tract (Q2); and 6) U10-U10.5, the composite of subaerially eroded (U10) and tidal ravinement (U10.5) unconformities that are the lower boundaries of the Cape Charles Paleochannel and tributaries and tidal inlet and back-barrier estuarine deposits.

Version	1
Keywords	Holocene, Pleistocene, Quaternary, Tertiary, scientific interpretation, geologic contacts, geospatial datasets, marine geology
Format	GeoTIFF; TFW
Amount	8 MB; 6 grids

Comments:

Includes using multichannel sparker seismic-reflection data collected in 2013 by Coastal Planning & Engineering, Inc. for the Maryland Energy Administration offshore of the Delmarva Peninsula, Maryland Wind Energy Area.

Contacts

Contact	David S Foster WHSC_data_contact@usgs.gov

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Location of materials and files

Public files	https://doi.org/10.5066/P9GQY0ZN https://www.sciencebase.gov/catalog/item/64371a38d34ee8d4addccf2a
Metadata	https://cmgds.marine.usgs.gov/metadata/whcmsc/SB_data_release/DR_P9GQY0ZN/Delmarva_depth_meta.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
1975-003-FA	Seismic Engineering streamer 300-active-foot
1974-004-FA	Single channel hydrophone
2014-002-FA	GeoEel 16-channel hydrophone Multi-channel (16 channel) solid digital seismic streamer
2015-001-FA	GeoEel 16-channel hydrophone Multi-channel (16 channel) solid digital seismic streamer

Geometries linked to this dataset

Map	Name	Description
Map	Delmarva_depth_footprint	Footprint of depth to Quaternary regional unconformities offshore of the Delmarva Peninsula, including Maryland and Virginia state waters. Footprint covers 6 different depth grids, not all covering the full area of the footprint.