Data
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Cosmogenic Al-26 and Be-10 exposure ages of blockslide deposits in Craig County, Virginia Cosmogenic Al-26 and Be-10 exposure ages of blockslide deposits in Craig County, Virginia
Craig County, Virginia hosts large (>500 m wide) blockslides and rock slumps along the southeastern slopes of several mountains. These features differ from Virginian boulder fields in several aspects, most significantly in soil development, foliage, and clast size. In contrast with freshly exposed, likely periglacial, boulder fields that commonly contain centimeter to meter-sized...
A Conodont Biostratigraphic and Color Alteration Index Dataset for New England: Maine, Vermont, Massachusetts, and parts of eastern New York, USA A Conodont Biostratigraphic and Color Alteration Index Dataset for New England: Maine, Vermont, Massachusetts, and parts of eastern New York, USA
For decades, researchers have recognized the functionality of using conodont elements in biostratigraphic investigations. A growing need now exists, however, for a digital dataset of fossil data. The New England conodont dataset is the region's first publicly accessible digital collection of previously published U.S. Geological Survey (USGS) conodont paleontological data and Color...
Greenhouse Gas Fluxes along a Tidal Gradient of Low Salinity Freshwater Forested Wetlands Greenhouse Gas Fluxes along a Tidal Gradient of Low Salinity Freshwater Forested Wetlands
A dynamic closed chamber system was used to measure in situ efflux rates of CO2, CH4, and N2O to the atmosphere from wetland soils along the Mattaponi and Pamunkey rivers. These greenhouse gas (GHG) flux measurements were taken quarterly from December 2015 to September 2017, at replicated hummock and hollow microtopography locations (where present) within each site. CO2 flux was measured...
Literature rates of measured methane fluxes from tidal wetland soils to the atmosphere Literature rates of measured methane fluxes from tidal wetland soils to the atmosphere
This data release reports a compilation of the literature that included measurements of both methane gas emission fluxes from the soil to atmosphere, and salinity, in different types of tidal wetlands around the globe. Rates were included for in situ measurements of methane flux in natural tidal wetlands but not experimental treatments or restored wetlands.
Early to Mid-Pliocene Sedimentological Data from the Yorktown Formation, near Jamestown, Virginia Early to Mid-Pliocene Sedimentological Data from the Yorktown Formation, near Jamestown, Virginia
Data consists of grain size distribution by weight in grams of samples collected from the Yorktown Formation from various localities along the James River near Smithfield and Williamsburg, Virginia. In total, data from 34 samples are included in this dataset.
Multi-proxy geochemical and sedimentological data from 20 short sediment cores collected along the Euphrates, Tigris, and Shatt al-Gharraf rivers in the lower Mesopotamian Plain, Iraq Multi-proxy geochemical and sedimentological data from 20 short sediment cores collected along the Euphrates, Tigris, and Shatt al-Gharraf rivers in the lower Mesopotamian Plain, Iraq
This data release presents multi-proxy geochemical and sedimentological data from 20 short sediment cores (ranging 50–70 cm in depth) collected in 2003 along the Euphrates, Tigris, and Shatt al-Gharraf rivers in the Lower Mesopotamian Plain, Iraq. The dataset includes X-ray fluorescence (XRF) elemental abundances, particle size distributions, visible and near-infrared spectrophotometry...
PRISM Pliocene-Pleistocene Planktic Foram Taxonomy PRISM Pliocene-Pleistocene Planktic Foram Taxonomy
Planktic foraminifera are single-celled organisms playing a crucial role in marine food webs by cycling nutrients within ecosystems. They are heterotrophic protists feeding on phytoplankton, the primary producers in the ocean. In turn, planktic foraminifera serve as a food source for a range of marine animals including fish, crustaceans, other zooplankton, and larger predators. In this...
Magnetic susceptibility, color spectrophotometry, X-ray fluorescence (XRF), and particle size data of the 82-foot NJ-GSB sediment core from Great Swamp National Wildlife Refuge, Morris County, New Jersey Magnetic susceptibility, color spectrophotometry, X-ray fluorescence (XRF), and particle size data of the 82-foot NJ-GSB sediment core from Great Swamp National Wildlife Refuge, Morris County, New Jersey
Analyses were conducted in 2025 to examine glaciolacustrine rhythmic laminations interpreted as annual layers (varves) in a sediment core collected from Great Swamp National Wildlife Refuge in Morris County, New Jersey in 2010. The dataset includes results from portable X-ray fluorescence (pXRF), particle size analysis (PSA), visible (color) and near-infrared spectrophotometry, and...
Molluscan Assemblages and Salinity Regimes from Three Southwest Coast Cores in Everglades National Park, Florida Molluscan Assemblages and Salinity Regimes from Three Southwest Coast Cores in Everglades National Park, Florida
Paleoecologic analyses of cores from the estuarine areas of Everglades National Park (ENP) by the U.S. Geological Survey began in the mid-1990s. Results of these analyses have contributed to an understanding of changes in salinity regimes, freshwater flow, and habitats of the Greater Everglades Ecosystem over the last several thousand years. Twentieth century changes to salinity and...
Rare Earth Element (REE), Critical Mineral, and Geochemical Characterization of Manganese Oxide Ore Deposits in the Virginia Piedmont and Valley & Ridge Rare Earth Element (REE), Critical Mineral, and Geochemical Characterization of Manganese Oxide Ore Deposits in the Virginia Piedmont and Valley & Ridge
Manganese is a designated critical mineral, being industrially utilized for producing steel and batteries, including in the production of electric vehicles (Rozelle and others, 2021). The eastern United States hosts hundreds of manganese oxide mines that served steel production until their abandonment in the mid-twentieth century (Pegau, 1958). Many relict mines still feature accessible...
Planktic foraminifer occurrence data from SE Virginia and Florida Pliocene samples Planktic foraminifer occurrence data from SE Virginia and Florida Pliocene samples
Data represent presence/absence of planktic foraminifer species in samples from Carters Grove, Virginia, and the Phred1 core located west of Vero Beach, Florida.
Geochemistry, thin section images, and 40Ar/39Ar isotopic data of selected bedrock samples in the Orange-Milford Belt, Connecticut Geochemistry, thin section images, and 40Ar/39Ar isotopic data of selected bedrock samples in the Orange-Milford Belt, Connecticut
This data release contains geochemical data, thin section images, and 40Ar/39Ar isotopic data from bedrock samples in the Orange-Milford Belt of south-central Connecticut. The geochemical data comprise whole-rock major oxide and trace element abundances in 111 samples. Pairs of images in plane-polarized light and cross-polarized light are included for 90 thin sections. Step-heated 40Ar...