NGMDB Geochron Downloader About the USGS Geochron Database

The USGS Geochron Database, supported by the National Geologic Map Database (NGMDB), in partnership with the Intermountain West project, provides access to USGS geochronological data from a single, publicly accessible source. Use this utility to streamline custom data download requests. Pop-ups off

Using the NGMDB Geochron Downloader to Get Data

1. Choose the analytical methods for download by selecting any (or all) of the analytical methods below. Alternatively, download the full database including all raw data (CSV), metadata, data dictionary, and associated files.

Geochron Database Analytical Methods

2. Customize your data download by choosing a download method below. Options include downloading data by custom area, downloading by regions (States/Country), or downloading all selected analytical method data.

To download data by area, hold the Shift key and drag over an area of interest. An active download link will appear below when selection is complete.

To download data by region, click the States and/or Countries of interest (click again to deselect). An active download link will appear below when selection is complete.

An active download link will appear below when this is selected. Note the download will be the full datasets of all selected analytical tests.

3. Download the data by clicking Download Data below. The option will become available when the request is validated. Note that parameters can be changed before submitting (active parameters are listed below).