Data consist of census counts of Pliocene benthic foraminifera from the lectostratotype of the Yorktown Formation at Rushmere, Viriginia, and from Pipsico Boy Scout Camp, Spring Grove, Virginia. In total, counts of individuals from 45 samples and 67 species are included. Counts for planktic foraminifera, foraminiferal fragments, and poorly persevered specimens are also included in the data.

Data consist of census counts of Pliocene benthic foraminifera from the lectostratotype of the Yorktown Formation at Rushmere, Viriginia, and from Pipsico Boy Scout Camp, Spring Grove, Virginia. In total, counts of individuals from 45 samples and 67 species are included. Counts for planktic foraminifera, foraminiferal fragments, and poorly persevered specimens are also included in the data.

Data consist of census counts of Pliocene planktonic foraminifera from the lectostratotype of the Yorktown Formation at Rushmere Virginia, Rice's Pit, Yorktown, and the type section of the Morgarts Beach Member at Morgarts Beach, Virginia. In total, counts of individuals from 12 samples and 25 species are included.

Data consist of census counts of Pliocene planktonic foraminifera from the lectostratotype of the Yorktown Formation at Rushmere Virginia, Rice's Pit, Yorktown, and the type section of the Morgarts Beach Member at Morgarts Beach, Virginia. In total, counts of individuals from 12 samples and 25 species are included.

Data consist of grain-size distribution by weight in grams of samples collected from the lectostratotype of the Yorktown Formation at Rushmere, Virginia, and from Pipsico Boy Scout Camp, Spring Grove, Virginia. In total, data from 45 samples is included.

Microfossil (benthic foraminifera) samples were obtained from surficial grab (denoted with “G”) and push core (denoted with “M”) sediments collected in Grand Bay estuary, Mississippi and Alabama, to aid in the paleoenvironmental understanding of Grand Bay estuary. The data presented here were collected as part of the U.S. Geological Survey’s Sea-level and Storm Impacts on Estuarine Environments and Shorelines (SSIEES) project, and Barrier Island Evolution Research (BIER) project. Sampling was conducted in May 2016 [field activity number (FAN) 2016-331-FA, alternate FAN 16CCT03]. In the field, 15 cores were collected in tidal creek mouths, proximal to tidal creek mouths, in protected coves, and in the open Grand Bay estuary. Surface samples were collected at each core site location. At the St. Petersburg Coastal and Marine Science Center (SPCMSC), 13 of the 15 cores were selectively subsampled for foraminifera, resulting in a total of 64 push core subsamples. Estuarine surface grab samples and push core subsamples were processed in the laboratory to three size fractions (63–125 micrometers (μm), 125–850 μm, and >850 μm), of which the 125–850 μm fraction was picked. The raw foraminiferal count data from the picked subsamples are provided below. For further information regarding foraminiferal collection and/or processing methods, refer to Ellis and others (2017a, https://doi.org/10.3133/ds1060). For information regarding 16CCT03 site locations, water quality parameters and sediment properties, refer to Marot and others (2019, https://doi.org/10.5066/P9FO8R3Y). For related datasets from the Mississippi Sound area, please refer to Haller and others (2018a, https://doi.org/10.5066/F7MC8X5F; and 2018b, https://doi.org/10.5066/F7445KSG), Ellis and others (2018, https://doi.org/10.3133/ofr20171165), Ellis and others (2017b, https://doi.org/10.3133/ds1046), and DeWitt and others (2017, https://doi.org/10.3133/ds1070). Downloadable data are available as Excel spreadsheets, comma-separated values text files, and formal Federal Geographic Data Committee metadata.

Microfossil (benthic foraminifera) samples were obtained from surficial grab (denoted with “G”) and push core (denoted with “M”) sediments collected in Grand Bay estuary, Mississippi and Alabama, to aid in the paleoenvironmental understanding of Grand Bay estuary. The data presented here were collected as part of the U.S. Geological Survey’s Sea-level and Storm Impacts on Estuarine Environments and Shorelines (SSIEES) project, and Barrier Island Evolution Research (BIER) project. Sampling was conducted in May 2016 [field activity number (FAN) 2016-331-FA, alternate FAN 16CCT03]. In the field, 15 cores were collected in tidal creek mouths, proximal to tidal creek mouths, in protected coves, and in the open Grand Bay estuary. Surface samples were collected at each core site location. At the St. Petersburg Coastal and Marine Science Center (SPCMSC), 13 of the 15 cores were selectively subsampled for foraminifera, resulting in a total of 64 push core subsamples. Estuarine surface grab samples and push core subsamples were processed in the laboratory to three size fractions (63–125 micrometers (μm), 125–850 μm, and >850 μm), of which the 125–850 μm fraction was picked. The raw foraminiferal count data from the picked subsamples are provided below. For further information regarding foraminiferal collection and/or processing methods, refer to Ellis and others (2017a, https://doi.org/10.3133/ds1060). For information regarding 16CCT03 site locations, water quality parameters and sediment properties, refer to Marot and others (2019, https://doi.org/10.5066/P9FO8R3Y). For related datasets from the Mississippi Sound area, please refer to Haller and others (2018a, https://doi.org/10.5066/F7MC8X5F; and 2018b, https://doi.org/10.5066/F7445KSG), Ellis and others (2018, https://doi.org/10.3133/ofr20171165), Ellis and others (2017b, https://doi.org/10.3133/ds1046), and DeWitt and others (2017, https://doi.org/10.3133/ds1070). Downloadable data are available as Excel spreadsheets, comma-separated values text files, and formal Federal Geographic Data Committee metadata.

Foraminiferal samples were collected from Chincoteague Bay, Newport Bay, and Tom’s Cove as well as the marshes on the back-barrier side of Assateague Island and the Delmarva (Delaware-Maryland-Virginia) mainland by U.S. Geological Survey (USGS) researchers from the St. Petersburg Coastal and Marine Science Center in March, April (14CTB01), and October (14CTB02) 2014. Samples were also collected by the Woods Hole Coastal and Marine Science Center (WHCMSC) in July 2014 and shipped to the St. Petersburg office for processing. The dataset includes raw foraminiferal and normalized counts for the estuarine grab samples (G), terrestrial surface samples (S), and inner shelf grab samples (G). For further information regarding data collection and sample site coordinates, processing methods, or related datasets, please refer to USGS Data Series 1060 (https://doi.org/10.3133/ds1060), USGS Open-File Report 2015–1219 (https://doi.org/10.3133/ofr20151219), and USGS Open-File Report 2015-1169 (https://doi.org/10.3133/ofr20151169). Downloadable data are available as Excel spreadsheets, comma-separated values text files, and formal Federal Geographic Data Committee metadata.

We include planktic and benthic foraminifer census data tables from the Paleocene-Eocene sections of South Dover Bridge and Mattawoman Creek-Billingsley Road coreholes.

We include planktic and benthic foraminifer census data tables from the Paleocene-Eocene sections of South Dover Bridge and Mattawoman Creek-Billingsley Road coreholes.