Two New Boulders of Orbicular Rocks from the Skellefte District, Northern Sweden
作者:
Erland Grip,
RichardV. Russell,
期刊:
Geologiska Föreningen i Stockholm Förhandlingar
(Taylor Available online 1971)
卷期:
Volume 93,
issue 1
页码: 177-214
ISSN:0016-786X
年代: 1971
DOI:10.1080/11035897109451937
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A large glacial boulder of quartz-diorite found at the village of Långträsk contains closely packed orbicules characterized by dark core fragments surrounded by numerous light and dark shells. The composition of the shells is related essentially to the relative proportions of amphibole/biotite and andesine plagioclase.
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