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    • Detrital Zircon U-Pb and Hf isotope data from selected Appalachian rivers

    Metadata Updated: October 2, 2025

    This data release contains zircon U-Pb (n=1467) and Hf (n=332) data for five modern rivers (Connecticut, Susquehanna, Roanoke, Peedee, and Chattahoochee) draining the Appalachian mountain belt. The data show that zircon crystallization ages are characterized by several discrete populations that often correspond with orogenic episodes in the Mesoproterozoic and Paleozoic, with distinct differences between the various rivers sampled. ɛHf values are more consistent geographically, but differ between the Grenville and Paleozoic (Taconic, Acadian, and Alleghenian) orogenies.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Created Date September 14, 2025
    Metadata Updated Date October 2, 2025

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 14, 2025
    Metadata Updated Date October 2, 2025
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/usgs-641309c6d34eb496d1ce3bfc
    Data Last Modified 2023-12-21T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id ca67f59b-99c0-4af5-8b1a-61f47ff6bf7c
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial -85.1660, 32.4078, -72.4219, 43.1972
    Source Datajson Identifier True
    Source Hash 9d1d612a369f331852d73120ec335f7f503a11e6ec7a5cd318dd5304df63a21d
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -85.1660, 32.4078, -85.1660, 43.1972, -72.4219, 43.1972, -72.4219, 32.4078, -85.1660, 32.4078}

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