Beginning with the minerogenetic theory of mantle plume , the basic geological conditions of this type deposit can be summarized through studying typical copper - nickel sulfide deposits which have close bearing on continental flood basalt . in contrast with high - mg volcanic magmatic activity , it can be found that some intrusive rock bodies have ni - minerogenetic geology condiction . xilaping rocks in binchuan - chenghai region has some basic geological condiction and reflects some extent minerogenetic . all these testify this region has very larger potentiality of finding copper - nickel sulfide deposits 通过对研究区内与峨眉山玄武岩活动有关的高镁火山岩进行研究对比，发现区内与峨眉山玄武岩同期形成某些侵入岩体具有成镍矿(化)的地质条件。研究区内的昔腊坪岩体除了具有这些基本地质条件外，还显示不同程度的矿化，说明该地区作为寻找镍矿的靶区是有很大的潜力。
High - mg volcanic rocks approach the primitive mantle compositions , and their magmatic source is close to the composition of bse , derives from the lower mantle and formed by this type - mantle rocks " fractional melting highly ( > 25 % ) . high - mg volcanic magma , formed in the axis of the emei mantle plume , underwent the crystallization differentiation of olivines and some pyroxenes ; some olivines reflect fair cumulus crystallization 高镁火山岩接近于原始岩浆的组成，岩浆源区与地球平均成分bse的成分特征相近，起源深度为下地幔，为该地幔岩较高程度的部分熔融( 25 )而形成的。高镁火山岩处于地幔柱的轴部，经历了橄榄石及一定程度的辉石分异结晶，并且橄榄石显示出一定的堆晶作用。
The results of the experiments indicate that : thermal plumes in the mantle ( i . e . mantle plumes ) should be divided into two types , vertical plumes , as mentioned traditionally , and non - vertical plumes , including those of inclined - columns , vortexes , etc . , and the former may be only a particular case of the latter ; under the condition of the coriolis force to be ignored 在忽略科里奥利力的情况下，板块的下插和滞积下沉、岩石圈根的存在以及地幔介质粘度的非均匀分布等都可能构成不同形状的障碍导流体，导致地幔的涡旋运动。
Due to the west north direction subduction , fast collapse ( delamination ) may take place and the mantle plume emerged in ludong , in addition , owing to the subduction of pacific plate under eurasian , there appeared left - lateral advection and extension for tan - lu faults ( named as yishu fault in shandong ) , and together with the collapse of yanshanian orogenic belts , all induced the crustal extension in shandong 由于太平洋板块对欧亚板块的俯冲( nw向) ，鲁东地区岩石圈发生了快速拆沉减薄作用，同时鲁东地区也可能会出现地幔柱的活动；另外，在太平洋板块俯冲作用影响下，郯庐断裂(山东称沂沭断裂)带发生了大型左行走滑剪切和拉张活动。
