基本解释：大洋岩
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Ocean lithosphere delamination and the lower crust delamination:the different mechanism and geological implication:Comment on the delamination model of lower crust and lithosphere mantle;大洋岩石圈拆沉与大陆下地壳拆沉:不同的机制及意义——兼评“下地壳+岩石圈地幔拆沉模式”
In the former province, the upper mantle rocks consist of harzburgite and lherzolite, characterized by the concentration of mantle type elements (K T) and the smooth-weak enrichment type REE patterns; the ocean volcanic rocks are dominated by basic rocks of subalkaline and oceanic ridge type; lead isotopes are noted for 206Pb/ 204Pb<18.前者上地幔岩有方辉橄榄岩和二辉橄榄岩 ,幔型元素 (KT)富集 ,REE呈平坦—弱富集型 ;大洋火山岩以基性岩、亚碱性、洋脊型为主 ;铅同位素2 0 6 Pb/2 0 4 Pb <18。
From the three-components mixing equation obtained, it can be seen that the concept of "mantle plane" is incorrect, meanwhile,the data of Nd, Sr and Ph isotopes of oceanic basalts show no e.从三元混合方程的展开形式可以看出，“地慢面”的概念是不能成立的，同时大洋玄武岩Nd，Sr和Pb同位素组成数据也并不支持大洋玄武岩为三元混合作用所形成这一假设。
