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Presence and absence of a widespread unit of Holocene marine sand observed in 2008 to 2017 in tsunami-hazard assessments on Anegada, British Virgin Islands

Metadata Updated: November 13, 2025

This part of the data release provides an updated georeferenced guide to the main unit of Holocene sand ascribed to a sea flood on Anegada. Much of the data was previously summarized in Figure A4 of https://doi.org/10.1130/GES01356.1 . Plotted here, on the accompanying map, are all 573 localities in the updated compilation <Sand_main.csv>—nearly half of which do not provide much if any evidence for marine inundation. The main attribute of each locality is one of four summary categories:
Pervasive—Sand covers more than 3/4 of area and typically thicker than 5 cm (132 localities). Patchy—Sand covers less than 3/4 of area and typically thinner than 5 cm (185 localities). Scant—Called “Sand scarce or absent” in https://doi.org/10.1130/GES01356.1 (256 localities). Pleistocene—Sand grains evidently weathered from Pleistocene limestone (23 localities). The sand, particularly where pervasive, commonly accompanies coral erratics and anomalous limestone clasts. Where patchy it extends farther inland than they do. Locally this mapping is ambiguous. Some of the sand has probably been redistributed by wind. The sand designated Pleistocene includes, in a correction, 8 sites mistakenly interpreted in https://doi.org/10.1130/GES01356.1 as Holocene marine sand.

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.

Downloads & Resources

Dates

Metadata Created Date September 13, 2025
Metadata Updated Date November 13, 2025

Metadata Source

Harvested from DOI USGS DCAT-US

Additional Metadata

Resource Type Dataset
Metadata Created Date September 13, 2025
Metadata Updated Date November 13, 2025
Publisher U.S. Geological Survey
Maintainer
Identifier http://datainventory.doi.gov/id/dataset/usgs-6492a093d34ef77fcb009bd7
Data Last Modified 2023-10-27T00:00:00Z
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 9a071cd9-0871-42a3-9aab-d9381d3bbab7
Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
Harvest Source Title DOI USGS DCAT-US
Metadata Type geospatial
Old Spatial -64.37440, 18.69100, -64.27260, 18.74810
Source Datajson Identifier True
Source Hash 443a6d2d36b26a78075ca28a70f549e2a91789ed3685dfa104544b83ea6a03c0
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -64.37440, 18.69100, -64.37440, 18.74810, -64.27260, 18.74810, -64.27260, 18.69100, -64.37440, 18.69100}

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