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Data Releases

The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.

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Reflectance data from figures in: Using X-ray spectrum of carbon in electron microprobe analysis to determine thermal maturity of organic matter in mudstones Reflectance data from figures in: Using X-ray spectrum of carbon in electron microprobe analysis to determine thermal maturity of organic matter in mudstones

Conventional methods of assessing organic matter (OM) thermal maturity have limitations and often fail to reflect the geochemical heterogeneity between individual organic phases in mudstone samples. Vitrinite and solid bitumen reflectance, for example, is often measured to estimate OM thermal maturity but is restricted to specific types of OM. Alternative methods deserve exploration...

Pre-mining environmental baseline characterization of the Hajigak iron deposit: 2020 field season Pre-mining environmental baseline characterization of the Hajigak iron deposit: 2020 field season

These data include geochemical analyses of rock and water samples collected from the Hajigak iron deposit, Bamyan and Wardak Provinces, Afghanistan in 2020.

Pre-mining environmental baseline characterization of the Aynak copper deposit: 2020 field season Pre-mining environmental baseline characterization of the Aynak copper deposit: 2020 field season

These data include geochemical analyses of rock, mine waste, and water samples collected from the Aynak copper deposit, Logar Province, Afghanistan in 2020.

Assessing risk for westward expansion of zebra mussels to guide EDRR strategies project Assessing risk for westward expansion of zebra mussels to guide EDRR strategies project

Zebra mussels are representative of nonindigenous aquatic species (NAS) with devastating economic, recreational, and environmental impacts that are already under watch as a problematic species across the U.S. and in Texas. Targeting dispersal pathways is likely the most efficient means of controlling their spread further west. The movement of recreational watercraft is one of the main...

Bayesian Composition Sampling Bayesian Composition Sampling

R Code to Run Composition Sampling for Cook et al. 2023 The aim of this software is to perform composition sampling on simulated disease observation data. Composition sampling is a valuable approach for statistical inference in data limited systems. This software implements composition sampling on simulated chronic wasting disease surveillance data in white-tailed deer in Michigan, U.S...

Measurements of surface water quality and carbon concentrations (2022-2023) in canals of Jean Lafitte National Historical Park and Preserve, Louisiana Measurements of surface water quality and carbon concentrations (2022-2023) in canals of Jean Lafitte National Historical Park and Preserve, Louisiana

This dataset contains measurements of water quality parameters (temperature, salinity, specific conductance, dissolved oxygen, and pH) and concentrations of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), and particulate organic carbon (POC) in canals of Jean Lafitte National Historical Park and Preserve (hereafter, the Park) during wet and dry seasons in 2022 and 2023...
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