| 广东普宁麒麟幔源包体及其寄主玄武岩稀土元素的研究 |
| |
| 引用本文： | 赵海玲.广东普宁麒麟幔源包体及其寄主玄武岩稀土元素的研究[J].现代地质,1987(2). |
| |
| 作者姓名： | 赵海玲 |
| |
| 摘 要： | 球粒陨石标准化的稀土元素分布型式表明二辉橄榄岩和方辉橄榄岩具有平坦的分布型式,二辉橄榄岩分布在世界二辉橄榄分布区域内,方辉橄榄岩HREE含量较低;辉石岩的分布型式与印度洋中脊玄武岩公布型式相近,玄武岩的分布型式明显亏损重稀土元素,它与夏威夷碱性橄榄玄武岩分布型式相近以.稀土元素分配系数的计算表明,二辉椰榄岩和玄武岩岩浆之间、方辉橄榄岩阳辉石岩岩浆之间处于平衡.辉石岩岩浆和玄武岩岩浆是起源于上地慢的原始岩浆.这与辉石岩和玄武岩主要元素的化学成分一致.稀土元素的研究暗示了该区土地馒曾发生过稀土元素的分异.在辉石岩浆形成之前,在上地幔的较高部位即玄武岩岩浆的源区轻稀土元素微具富集,而在上地幔的梢下部位即辉石岩岩浆形成的源区轻度亏损了轻稀土元素
|
A STUDY OF RARE EARTH ELEMENTS IN THE MANTLE-DERIVED XENOLITHS AND THEIR HOST BASALT FROM QILIN,PUNING COUNTY,CUANGDONG PROVINCE |
| |
| Abstract: | REE distribution patterns(normalized to chondrite) show that the patterns of Iherzolite and harzburgite are of smooth types. The distribution of Iherzoli-te falls well within the range of that of the Iherzolite in the world.The pattern of pyroxenite is similar to that of the mid-ocean ridge basalt in the Indian ocean, there is obviously a HREE depletion in the pattern of basalt which is similar to that of alkalic olivine basalt in Hawaii. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
