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Service Description: From the USGS Abstract: Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats. Purpose: This database is a minor revision of DDS-14, with some corrections.

Map Name: National Geochronological Database

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Description: From the USGS Abstract: Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats. Purpose: This database is a minor revision of DDS-14, with some corrections.

Copyright Text: USGS

Spatial Reference: 102100  (3857)


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Spatial Reference: 102100  (3857)

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Spatial Reference: 102100  (3857)

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Comments: From the USGS Abstract: Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats. Purpose: This database is a minor revision of DDS-14, with some corrections.
Subject: Sourced from th National Geochronological Database: Radiometric and fission-track age determinations of geologic materials from the continental US and Alaska
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Keywords: Geochron,age,geology
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