喀喇沁橄榄石斑晶中流体包裹体的组分特征及其构造意义.pdfVIP

1000-0569/ 2000/ 016( 02) -0275-80 A cta P etrolog ica inica　岩石学报 1 2 1 3 1 1 邵济安　王志海　臧启家　韩庆军　张树霖　李红东 1. , 100871; 2. , 710054; 3. , 100029; 1. P eking University Beij ing, 100871, China; 2. X ian I nstitute of Geology and M iner al Resources, X ian 710054, China; 3. I nstitute of Geology and Geop hysics, Chinese A cademy of ciences, Beij ing 100029, China. 2000-03-02 收稿, 2000-04-14 改回. Shao Jian, Wang Zhihai, Zang Qij ia, Han Qingj un, Zhang Shulin and Li Hongdong. 2000. Composition of fluid inclusions . , 6(2) : 275280 in olivine phenocryst from Harqin area and its tectonic implications A cta P etrolog ica Sinica AbstractLaser Raman Microprobe as been used to detect composit ion of fluid inclusions in olivine p enocrysts in lim bur- , - . , , gite from Harqin area eastern Inner M ongolia T e results s ow t at t e fluid inclusions are mainly composed of CO2 CO H O, N , H S, SO , ydrocarbons and anionic complex group to a less cont ent , . It is considered t at t e fluid inclusions 2 2 2 2 trapped in t e early-crystallized olivine p enocryst from a slig t ly evolved m ant le-derived magma in a relatively close system may reflect compositions of fluid in t e mantle source. T us by comparison w it fluid compositions of peridotit e xenolit s , , from Damaping area of Hannuoba Hebei province w e suggest t at t e fluid composit ion in t e mantle beneat nort C ina crat on remains stable from t e Late Mesozoic to t e Cenozoic. Tectonically , bot of t em are all formed in t e lit osp ere ex- tensional environment per aps result ed from upwelling of t e ast enosp ere. - ; ; Key words Inner Mongolia Ol