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XI RMS General Meeting and the Fedorov Session 2010
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11-14 October 2010
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Conferences & Meetings XI RMS General Meeting “Modern mineralogy: from theory to practice” combined with the Fedorov Session 2010
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Xenogenic zircon in mafic-ultramafic rocks of SE of the Fennoskandian shield

RMS-DPI code:  2010-1-77-0
Scientific session:  M2. Minerals as indicators of ore- and rock formation.
Author listing:  Kulikova V.V., Bychkova Ya.V., Kulikov V.S.
Principal author:  Kulikova Victoria V.
Language:  Russian
Abstract - Summary 
(short description):
In the course of researches mafic-ultramafic vulkano-plutonic association of Vetreny Poyas paleorift samples from different rocks have been selected for zircon allocation for U-Pb isotopic researches and for the purpose of age definition of Myandukha komatiitic basalts. Zircon, allocated from selected in 2003 from komatiitic basalts, have been analysed in VSEGEI by V.F.Smolkin (Smolkin, Spheres, 2009). Zircon from other objects also were studied: massif of Rujga, Vyzhiga, and lava lake cumulates of B.Levgora.
Zircon grains are met both near to the basis of streams, in drills of intrusions close boundaries and without special positions in dykes. They possess sometimes well remained crystallographic forms, but represent resorbed crystals or more often their fragments. Crystals are zoned. It is caused not only the sizes and uniformity degree of the zones, but also their variable structure. Zircon has obvious «non syngenetic» character in an researched rock complex. They are divided into: 1) xenogenic, grasped by lava (Sinegore) and concentrated in a bottom part of covers or in a roofing part of intrusions (except of Vyzhiga massif, where they are dated for a bottom); 2) secondary in baddeleites in the form of an external cover which tends to replace them almost completely.
 
Date of presentation:  13/10/2010
Time of presentation:  13:20
Presentation Place:  Mining University, Conference Hall
 
RMS-DPI code:  2010-1-77-0
Proceeedings volume 
in the RMS catalogue:
 
Modern mineralogy: from theory to practice
Pages:  210-211
File of proceedings 
(PDF): 
 752 K
Status:  printed
Recieved:  15/06/2010
Accepted:  15/07/2010
Published on-line:  21/11/2010
Permanent address of publication:  http://www.minsoc.ru/2010-1-77-0/
Contact author(s):  Kulikova, Victoria Vladimirovna
 

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