Dataset description: Geochemical and mineralogic analysis of authigenic carbonates collected offshore the U.S. Mid- and South Atlantic

Geochemical and mineralogic analysis of selected carbonate rock samples collected from seep fields on the RB1903 and AT41 research expeditions in the U.S. Mid- and South Atlantic. Samples were collected as a fingerprint to past hydrocarbon seep activity, fluid source, and depositional environment. Analyses include: Wavelength-dispersive X-ray Fluorescence (WDXRF) major element, Inductively Coupled Optical Emission Spectroscopy/Mass Spectroscopy (ICPOES-MS) major and minor element, and x-ray diffractrometry (XRD) mineralogy. All WDXRF and ICPOES-MS samples were analyzed by the U.S. Geological Survey Minerals Resource Program Analytical Geochemistry facility via its contract laboratory, AGAT Laboratories.XRD samples were analyzed at the Woods Hole Coastal and Marine Science Center.

Version	1
Keywords	rocks and deposits, x-ray diffraction, chemical analysis, x-ray fluorescence, mass spectroscopy
Data types	Surveys (geochemical)
Format	comma-delimited text;
Amount	0.15 MB

Contacts

Contact	Jason Chaytor PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://www.sciencebase.gov/catalog/file/get/61576cdbd34e0df5fb9fc371 https://doi.org/10.5066/P9DRU8TP
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P9DRU8TP/DeepSearch_AC_geochem.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2019-003-FA	ROV
2019-620-FA	grabs small grab sampler
2018-042-FA	Human Operated Vehicle (HOV) Alvin Sampler HOV Alvin enables in-person observation and sampling in deep-sea environments, which is critical for: studying hydrothermal vents, cold seeps, and coral habitats; collecting biological, geological, and chemical samples; and deploying instruments and conducting video surveys. Operating Depth: 6,500 m (21,325 ft); Sampling Tools: Two Schilling Titan manipulators, sample basket, water samplers, tube corers, bio boxes; Science Payload: ~181 kg (400 lbs).