来自南极格罗夫山蓝冰地区的GRV 99027陨石为一无球粒陨石，主要由橄榄石及辉石组成。棕色橄榄石具堆晶结构及镶嵌结构等火成岩浆分异结晶的特征。陨石的矿物模式组成及化学成分显示与SNC族陨石特征相似，特别是与ALHA77005陨石十分接近。后者被确定为二辉橄榄岩质辉玻无球粒陨石类（Lherozolitic-Sheegotty，L-s）火星陨石。GRV 99027陨石的矿物化学特征以及FeO/MnO比值也与L-s类相似。可以初步认为GRV 99027陨石为SNC族火星陨石一个新的成员。二辉橄榄岩相当于地球的上地幔成分。陨石来自火星深部，为世界上极为稀有的火星样品，极具研究价值。

与前人的划分不同，本文所指的郭家岭花岗岩只包括郭家岭和丛家两个岩体。由郭家岭岩体的5个全岩样品给出的Rb-Sr等时线年龄为200.6±3.48Ma，(87 Sr/86 Sr)i=O.71127、R=0.99955，表明该岩体是印支运动末期形成的。常量元素、微量元素及稀土元素表明该花岗岩是由壳幔物质混合形成的。岩浆作用包括二个阶段：早期的花岗闪长岩构成主体，壳幔物质的混合比为65:35；晚期的石英闪长岩呈小旨株产出，壳幔物质接近1:1。

The Mamianshan Group in the middle part of Fujian Province is developed along the Zhenghe-Dapu deep fault zone which is an important geological boundary in Fujian and even in South China. Dating and study on genesis of the Marnianshan Group are important approach tocharacterize the Zhenghe-Dapu deep fault zone, and to better understand the formation and evolutionof the Cathaysia block. Salples collected from three sections yield three isochrons with consistent ages within error ranging from 1.73～1.77 Ga and with high initial eNd (t) values. This suggests that the Mamianshah metamorphic basic volcanic rocks were formed in the Mesoproterozoic rather than in the Caledonian period. This also suggests that the Zhenghe-Dapu deep fault zone was active as early as in the Mesoproterozoic when it was a premature rift zone and that the Mamianshan met, a-volcanic rocks were products of the rifting in the Cathaysia. The high initial eNd (t) values (+7.6～+10.9) of the Mamianshan meta-volcanic rocks suggest that they were derived from highly depleted mantle. This implies that this mantle produced large amount of crustal matters before the Mesoproterozoic probably in the Paieoproterozoic, which supports the existence of Cathaysia with main Paleoproterozoie crust most of which was later destroyed or reworked.

闽中地区元古宙马面山群变质火山岩沿政和一大埔断裂带分布，根据其主要化学成分特征应为一套“双峰式”火山岩。稀土元素地球化学特征表明：本区绿片岩及钠长变粒岩LREE富集Eu含量基本正常微量元素MORB标准化蛛网图和微量元素构造判别图显示样品具大陆拉斑玄武岩特征，并呈大陆裂谷性质，斜长角闪岩没有明显的Eu负异常，MORB标准化蛛网图曲线前部呈小的隆起，Nb-Ta亏损较为明显，其岩石特征具有过渡性的钙碱性玄武岩及T-MORB的地球化学属性原始地幔及Nb标准化蛛网图显示其可能来源于亏损地幔或有陆壳物质的混染。说明本区由大陆裂谷演化发展成为初始洋盆，有岩浆喷发，并可能发生板内俯冲。因此，这些变质火山岩应形成于裂谷-初始洋盆-板内俯冲的构造环境。

对南极格罗夫山蓝冰地区收集的23个陨石进行了系统研究。经激光共聚焦显微镜观察，未查出碳质球粒陨石。经电子探针鉴定，也未发现顽火辉石球粒陨石。系统的研究确定这些陨石均为普通球粒陨石。运用x射线能谱仪进行全视域元素成分面分析方法，获得了23个陨石的化学成分。应用陨石中siO2、∑FeO、MgO、CaO的含量进行图解对比，划分出陨石的化学群，取得了初步的结果。又以电子探针测得的橄榄石、辉石矿物化学成分，采用Fa-Fs图解法进行化学群分类。这两种方法对23个陨石化学群的划分，取得了较为一致结果。陨石岩石类型的确定，主要根据陨石中球粒及基质的特征，参考其它标志，如橄榄石成分、辉石的结构、长石的特征等进行分类，效果较好。对于岩石类型为第3类的非平衡陨石，由于矿物成分变化较大，并可能有水等易挥发成分的存在，其化学群的划分不易确定。