Paleoarchaean Tonalites in the Orekhovo-Pavlogradskaya Palaeoproterozoic Collsional Zone (Ukrainian Shield)

被引：7
|
作者：
Lobach-Zhuchenko, S. B.
Bibikova, E. V.
Balagansky, V. V.
Sergeev, S. A.
Artemenko, G. V.
Arestova, N. A.
Shcherbak, N. P.
Presnyakov, S. L.
机构：
来源：
DOKLADY EARTH SCIENCES | 2010年 / 433卷 / 01期
关键词：
Zircon; 206Pb; DOKLADY Earth Science; Magmatic Zircon; Isochron;
D O I：
10.1134/S1028334X10070068
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The novel detailed geological and geochronological data for the tonalitie rocks and products of its structural and metamorphic overprint in the Orekhovo-Pavlogradskaya collision zone (Ukrainian Shield) are discussed. Magmatic crystallization of tonalites (3500 +/- 13 Ma) followed by amphibolite (2863 +/- 22 Ma) and granulite (2105 +/- 40 Ma) facies metamorphic events, resulting in biotite-garnet gneisses formation. The last date also indicating the time of collision event. The earliest age of 3.64 Ga was found in the zonal zircon fragment within 3.5-Ga old magmatic zircon from tonalite.
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页码：873 / 878
页数：6
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