Mesoproterozoic (1.47-1.44 Ga) orogenic magmatism in Fennoscandia; Baddeleyite U-Pb dating of a suite of massif-type anorthosite in S. Sweden

被引：75
|
作者：
Brander, Linus [1 ]
Soderlund, Ulf [2 ]
机构：
[1] Univ Gothenburg, Ctr Earth Sci, S-40530 Gothenburg, Sweden
[2] Lund Univ, GeoBiosphere Sci Ctr, Dept Geol, S-22362 Lund, Sweden
来源：
INTERNATIONAL JOURNAL OF EARTH SCIENCES | 2009年 / 98卷 / 03期
基金：
瑞典研究理事会;
关键词：
Fennoscandia; Anorthosite; Baddeleyite; Danopolonian; U-Pb; BALTIC SHIELD; SW SWEDEN; SVECONORWEGIAN OROGEN; EASTERN SEGMENT; ISOTOPIC INVESTIGATIONS; ZIRCON GEOCHRONOLOGY; FACIES METAMORPHISM; AGE CONSTRAINTS; RAPAKIVI-MASSIF; LU-HF;
D O I：
10.1007/s00531-007-0281-0
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The Jonkoping Anorthositic Suite (JAS) in S. Sweden has characteristics typical for (Proterozoic) massif-type anorthosites. The interstitial liquid of these plagioclase-porphyritic rocks solidified at 1,455 +/- A 6 Ma, as determined by U-Pb isotope analysis of baddeleyite. The JAS developed during a regional 1.47-1.44 event in Fennoscandia that generated widespread mafic magmatism (basalts, and diabase dykes and sills) in the north and emplacement of felsic plutons in the south. The event of 1.47-1.44 Ga magmatism in Fennoscandia largely coincides in age with dynamic high-grade metamorphism in SW Sweden and was probably related to convergent active-margin processes during the Danopolonian orogeny.
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页码：499 / 516
页数：18
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