Age data on Proterozoic granitoids from the Norvijaur area of northern Sweden
作者:
Torbjörn Skiöld,
Christina Larsson,
期刊:
Geologiska Föreningen i Stockholm Förhandlingar
(Taylor Available online 1978)
卷期:
Volume 100,
issue 2
页码: 171-176
ISSN:0016-786X
年代: 1978
DOI:10.1080/11035897809454456
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Age measurements on Svecokarelian rocks of the Norvijaur area demonstrate (a)that the microcline granite, intersecting a metasupracrustal belt, has a whole-rock Rb-Sr age of 1915 ± 20 Ma with an intercept of 0.7025 ± 0.0007 and (b)that the gneissic granodiorite, lately interpreted as a basement to the above metasupracrustals, has a U–Pb zircon age of 2010 ± 40 Ma and a Rb-Sr whole-rock age of 1925 ± 120 Ma with an intercept of 0.7033 ± 0.0006.
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