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    • "RV Manta - FGBNMS - FGBNMS-15-27_UTIG_2_1.nc - 29.31N, 94.82W - 2015-10-08"

    Metadata Updated: January 26, 2025

    A key question in the marine and energy geosciences is how sand is transported from the river mouth across continental shelves and slopes to eventually be accumulated in significant volumes within deep sea fans. Significant in this case is defined as volumetrically large enough deposits to serve as future hydrocarbon reservoirs. One mechanism may be transport through incised river valleys during sea-level low-stands, temporary deposition in shelf-edge deltas, with possible winnowing over multiple sealevel cycles, and with subsequent remobilization via sediment gravity flows that traverse the slope to build fan systems. To understand what factors critically control sediment routing and preferential sorting, we need to study fully preserved analogs for deepwater sands. One such analog is the Pleistocene Rio Grande source-to-sink system and in particular the linkage between the known sandy deposits on the shelf edge and deepwater Rio Grande Fan. We propose a high-resolution 2D marine seismic and mini-piston coring study of the shelf edge through upper fan to demonstrate our ability to image and core sandy intervals within the incised valley and slope canyon fill. Cored sands will be radiocarbon dated and analyzed by U-Pb-He double dating to establish its age and provenance signature. Sedimentary structures and textures will be used to constrain transport and depositional styles associated with this large system.

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    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 Date January 10, 2025
    Metadata Created Date August 26, 2024
    Metadata Updated Date January 26, 2025
    Reference Date(s) October 16, 2019 (creation), October 16, 2019 (issued)
    Frequency Of Update

    Metadata Source

    Harvested from ioos

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date January 10, 2025
    Metadata Created Date August 26, 2024
    Metadata Updated Date January 26, 2025
    Reference Date(s) October 16, 2019 (creation), October 16, 2019 (issued)
    Responsible Party Texas A&M University/ Department of Ocecanography (Point of Contact)
    Contact Email
    Guid FGBNMS_FGBNMS-15-27_UTIG_2_1
    Access Constraints
    Bbox East Long -94.2956
    Bbox North Lat 29.3422
    Bbox South Lat 26.0462
    Bbox West Long -97.2129
    Coupled Resource [{"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}]
    Frequency Of Update
    Harvest Object Id 00890df9-6524-438c-8633-55a5d743f149
    Harvest Source Id 54e15a6e-6dde-4c9c-a8f0-345cc0dfccfb
    Harvest Source Title ioos
    Licence
    Lineage 20191016T141542
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-97.2129, 26.0462], [-94.2956, 26.0462], [-94.2956, 29.3422], [-97.2129, 29.3422], [-97.2129, 26.0462]]]}
    Progress
    Spatial Data Service Type ERDDAP tabledap
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2015-10-08T01:29:08Z
    Temporal Extent End 2015-10-16T18:23:24Z

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