Peralkaline rhyolites from the ordovician tweeddale lavas, peeblesshire, scotland
作者:
M. F. Thirlwall,
期刊:
Geological Journal
(WILEY Available online 1981)
卷期:
Volume 16,
issue 1
页码: 41-44
ISSN:0072-1050
年代: 1981
DOI:10.1002/gj.3350160104
出版商: John Wiley&Sons Ltd
关键词: Southern;Uplands;Subduction;Pantellerites
数据来源: WILEY
摘要:
AbstractThe riebeckite‐bearing rhyolite of Winkston Hill, Peebles, is shown to be peralkaline and may be named a pantellerite. Trace element comparison with other more altered members of the Tweeddale lavas from Wrae Hill suggests that the whole suite is peralkaline. It is thought most unlikely that the suite was developed in association with an Upper Ordovician subduction zone, and it was perhaps erupted on an oceanic islan
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