Talk:Bright Angel Shale

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External links modified

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merge with Bright Angel Shale

USGS doesn't appear to support use of "Bright Angel Formation." USGS does, however, appear to support "Bright Angel Shale" of Tonto Group (AZ*), This article describes the Bright Angel Shale as a member of the Tonto Group (the unit in Arizona). Bright Angel Formation has description being in Arizona. Recommend merging the Formation article into this, the Shale article. See https://ngmdb.usgs.gov/Geolex/Units/BrightAngel_4814.html. Trilotat (talk) 22:59, 11 April 2019 (UTC)[reply]

removed the dead "external links"

I replaced the dead anonymous external links with links USGS's Geolex. Trilotat (talk) 16:42, 2 June 2019 (UTC)[reply]