• Organization: Department of the Interior
• Updated: 2023-03-30T00:00:00Z

Aliquots of collected water samples were prepared for isotopic analysis at the USGS laboratories in Menlo Park, CA by precipitating dissolved sulfate as barium sulfate, using the methods of...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-03-30T00:00:00Z

Samples from outside the crater lake were analyzed for their sulfur isotopic composition. Samples of sulfate alteration and native sulfur from the Kīlauea summit, Halema’uma’u crater (HMM), and...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2021-10-25T00:00:00Z

Ice core from Greenland was melted, filtered, and homogenized. Its stable hydrogen (δ2H) and oxygen (δ18O) isotopic compositions were adjusted to approximately match those of USGS46 ice core water...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

Radiocarbon dating of silicified wood was performed at the U.S. Geological Survey’s Radiocarbon Laboratory in Denver, Colorado. All samples were chemically treated using the standard...

• xml
• xml

• Organization: National Aeronautics and Space Administration
• Updated: 2026-02-10

This data set contains measurements of the concentration and stable carbon (13C / 12C) and nitrogen (15N / 14N) isotope ratios of plant (leaves, roots and fungi) and soil samples from southern...

• none
• zip
• pdf
• html
• none

• Organization: Department of the Interior
• Updated: 2020-12-07T00:00:00Z

Sulphur Banks, near the summit of Kīlauea Volcano on the Island of Hawai`i, is a thermal area where volcanic gases and steam are discharged. A research well drilled in the 1920s at Sulphur Banks...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-19T00:00:00Z

This data release contains 60 detrital zircon age spectra, based on U and Pb isotope ratio measurements for 9399 single grains. The samples are from Paleogene strata of the U.S. Gulf Coast. Of the...

• xml
• xml

• Organization: National Aeronautics and Space Administration
• Updated: 2026-02-10

This dataset provides O2/N2, CO2, Ar/N2, and stable isotope ratios of CO2 measured in flasks collected by the Medusa Whole Air Sampler during airborne campaigns conducted by NASA's Atmospheric...

• none
• zip
• pdf
• pdf
• html
• none

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-02-13T00:00:00.000+00:00

Rock, sediment, and bottom water samples were collected via ROV Hercules from seamounts in the Papahānaumokuākea Marine National Monument during expeditions NA134 and NA138 of EV Nautilus, to...

• none
• none
• none
• none
• html
• html
• +8 more

• Organization: Department of the Interior
• Updated: 2020-08-31T00:00:00Z

Sample Analyses: Four samples of silica sinter from Giant and Castle Geysers compo sedof opal-A or opal-A/C were analyzed for U-Th isotopes at USGS laboratories in Denver, CO...

• xml
• xml

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-03-25T00:00:00.000+00:00

This dataset contains bulk sulfur stable isotope values (δ34S) derived from muscle tissue collected from fish species utilizing various marsh sub-habitats (edge, creek, ponds) along a salinity...

• none
• none
• none
• none
• none
• none
• +6 more

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2021-06-23T00:00:00.000+00:00

This dataset contains a compilation of seafloor surface benthic foraminifera assemblages, baseline stable carbon and oxygen isotope measurements from benthic foraminifera, and short-lived...

• none
• none
• none
• none
• none
• none
• +4 more

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-03-21T00:00:00.000+00:00

A series of Natural Resource Damage Assessment (NRDA) cruises were conducted in 2010 and 2011 to evaluate the distribution and densities of ichthyoplankton and other zooplankton in Gulf of Mexico...

• none
• none
• none
• none
• none
• none
• +4 more

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-06-24T00:00:00.000+00:00

This dataset consists of stable isotope data from turtlegrass-dominated seagrass beds of the northern Gulf of America (formally the Gulf of Mexico), including Lower Laguna Madre, TX; Coastal Bend,...

• none
• none
• none
• none
• none
• none
• +5 more

• Organization: Department of Agriculture
• Updated: 2025-11-21

Biochars are charcoals used as soil amendments, and they have many beneficial effects on soil health. However, one negative effect is biochars often reduce concentrations of soil nitrogen that are...

• csv
• csv
• xls
• csv
• csv

• Organization: Department of Agriculture
• Updated: 2025-11-22

Phenotypic evaluation of 37 crimson clover (Trifolium incarnatum L.) accessions from the US National Plant Germplasm System. Focus of the trial was on traits important for cover crop performance,...

• csv
• csv
• csv
• csv
• none

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2021-12-20T00:00:00.000+00:00

This data package reports presence/absence and density data, and environmental data (temperature, salinity, dissolved oxygen) collected in the northern Gulf of Mexico during R/V Blazing Seven...

• none
• none
• none
• none
• none
• none
• +4 more

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2024-08-27T00:00:00.000+00:00

This dataset contains water temperature, salinity, and other ocean and atmosphere parameters taken by CTD, ADCP, and other instruments from the research vessel Araon, cruise ARA13B, in the Bering...

• none
• none
• none
• none
• none
• none

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-03-11T00:00:00.000+00:00

This dataset includes marine biodiversity data collected in support of the Arctic Marine Biodiversity Observing Network (AMBON) project from 2015 to 2020. These data include fish, seabird and...

• none
• none
• none
• none
• none
• none
• +2 more