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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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