CAJ | 학술논문

文章对内蒙古西伯地区蛇绿混杂岩带岩石学、岩石地球化学、微量元素、稀土元素、U-Pb 同位素年龄测定的综合研究表明：①该混杂岩体以变质橄榄岩、橄榄辉长岩、细粒辉长岩为主；②变质橄榄岩具有低铬、钛、贫钙和高镁的特点,辉长岩类具有富铝、钛含量中等的特点；③微量元素富、稀土元素含相容元素 Cr、Ni、Co,而贫大离子亲石元素 LILE(不相容元素)K、Rb、Sr、Ba、Zr、Y、P、Ti 等；④本区超基性岩的形成时代大约在早泥盆世早期。
문장대내몽고서백지구사록혼잡암대암석학、암석지구화학、미량원소、희토원소、U-Pb 동위소년령측정적종합연구표명：①해혼잡암체이변질감람암、감람휘장암、세립휘장암위주；②변질감람암구유저락、태、빈개화고미적특점,휘장암류구유부려、태함량중등적특점；③미량원소부、희토원소함상용원소 Cr、Ni、Co,이빈대리자친석원소 LILE(불상용원소)K、Rb、Sr、Ba、Zr、Y、P、Ti 등；④본구초기성암적형성시대대약재조니분세조기。
The study on petrology,petrogeochemistry,trace elements,rare earth elements and U-Pb isotopic dating of ophiolite mélange belt in Xibo area of Inner Mongolia shows that:1)the ophiolite belt primarily in-cludes metamorphic peridotite,olivine gabbro and fine-grained gabbro,2)the metamorphic peridotite is char-acterized by low chromium and titanium,poor calcium and high magnesium,and the gabbro is characterized by rich aluminum and medium titanium,3)the trace elements are rich,and rare earth elements contain com-patible elements such as Cr,Ni and Co,while Large Ion Lithophile Elements (LTLE)such as K,Rb,Sr, Ba,Zr,Y,P and Ti are poor,4)the Early Devonian System witnesses the formation of ultrabasic rocks in this area.