Intrusive quartz latites in the Blaenau Ffestiniog area, Merioneth
作者:
Alan V. Bromley,
期刊:
Geological Journal
(WILEY Available online 1965)
卷期:
Volume 4,
issue 2
页码: 247-256
ISSN:0072-1050
年代: 1965
DOI:10.1002/gj.3350040202
出版商: John Wiley&Sons Ltd
数据来源: WILEY
摘要:
AbstractCertain flow‐banded and fragmental rocks amongst the Moelwyn Volcanic Series are shown to be of intrusive origin, although at one time they were believed to be extrusive lavas, ashes and agglomerates. Thus the thickness and extent of the volcanic rocks are greatly reduced. New palaeontological evidence shows that part of the Moelwyn Volcanic Series is Caradocia
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