MAGMATIC STRUCTURES OF THE SIDOBRE GRANITE PLUTON (TARN, FRANCE) - FROM THE MASSIF SCALE TO THE SPECIMEN SCALE

被引：0
|
作者：
DARROZES, J [1 ]
MOISY, M [1 ]
OLIVIER, P [1 ]
AMEGLIO, L [1 ]
BOUCHEZ, JL [1 ]
机构：
[1] UNIV JOSEPH FOURIER,LGIT-IRIGM,F-38041 GRENOBLE,FRANCE
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II | 1994年 / 318卷 / 02期
关键词：
STRUCTURE; GRANITE; SHAPE PREFERRED ORIENTATION; SIDOBRE; FRANCE; VARISCAN;
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A joint study of Anisotropy of Magnetic Susceptibility and Shape Preferred Orientations (SPO) of the principal mineral phases of the Sidobre granite has been performed. A remarkable organization of the magnetic foliations and lineations, oblique to the long axis of the pluton, has been evidenced. These magnetic structures represent in fact the magmatic ones as proved by the SPO of biotite, plagioclase and K-feldspar megacrysts. NNE-SSW striking lineations, systematically orthogonal to the trends of aplo-pegmatitic dykes, suggest that the pluton was emplaced in relation to a NNE-SSW directed opening of the crust. This mechanism is in accordance with the recent models of late Variscan extensional tectonics of the Montagne Noire.
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页码：243 / 250
页数：8
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