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The Rb-Sr age of the Varberg charnockite, Sweden: A reply and discussion of the regional contexts

 

作者: Roland Gorbatschev,   Eric Welin,  

 

期刊: Geologiska Föreningen i Stockholm Förhandlingar  （Taylor Available online 1980）
卷期: Volume 102, issue 1  

页码: 43-48

 

ISSN:0016-786X

 

年代: 1980

 

DOI:10.1080/11035898009448591

 

出版商: Taylor & Francis Group

 

关键词: Absolute age;charnockite;igneous activity;tectonics;metamorphism;plate tectonics;regional geology;Varberg charnockite;Charnockite-Granite Association;Varberg group;Bua group;Gothian;Pregothian;Svecokarelian;Precambrian;southwestern Sweden;N5600 N6100 E150

 

数据来源: Taylor

 

摘要:

The Precambrian evolution of south-western Sweden is reviewed concisely to provide a background for the dating of the Varberg charnockite. It is shown that the alleged Gothian and western Pregothian regions pass continuously into each other. In the west, the oldest dated rocks have ages around 1700 Ma. An older (Svecokarelian?) basement may be present in the eastern parts of the region. Basic magmatism, metamorphism and the relationship between orogenic and anorogenic events are discussed.

 

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