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Age of the ordovician andesitic conglomerate of castle hill, Montgomery, Powys, Wales

✍ Scribed by R. Cave; W. T. Dean; B. A. Hains

Book ID: 102846271
Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 718 KB
Volume: 23
Category: Article
ISSN: 0072-1050
DOI: 10.1002/gj.3350230302

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✦ Synopsis

Marine fossils including Broeggerolithus broeggeri (Bancroft) and Salterolithus caractaci (Murchison) collected from strata surrounding the andesitic conglomerate of Castle Hill, Montgomery prove that the volcanic event which produced it, and possibly also the andesite of Moel-y-Golfa 10 miles to the NNE, was of Caradoc (early Soudleyan) age.

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The ordovician (caradoc) volcanic rocks

The ordovician (caradoc) volcanic rocks of montgomery, Powys, N. Wales

✍ R. J. Dixon 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 594 KB

The Ordovician (Caradoc, Soudleyan) rocks of Montgomery, Powys are shales interbedded with locally conglomeratic volcanjclastic sediments composed of andesitic detritus. New formal lithostratigaphic units are proposed: Montgomery Volcanic Group comprising in ascending order: Castle Hill Shale Format