集宁—阳高地区侵入成因的暗色麻粒岩及苏长辉长岩的变质作用

通常认为暗色麻粒岩是基性火山岩层遭受高级变质的产物。文章根据内蒙集宁和山西阳高地区的高级变质区的岩石组合、结构构造、矿物共生、地质温度计等9方面资料,论证了工作区暗色麻粒岩不是基性火山岩的进变,而是原始苏长辉长岩的逆变(degeneration,指由原始岩浆岩的高温矿物组合变为变质矿物组合),根据麻粒岩的矿物组合和组构变化,结合其它地质和物理化学特征,将工作区的暗色麻粒岩分成了A、B、C三种类型,大体相应于苏长辉长岩变为暗色麻粒岩的逆变序列。文章最后提出了麻粒岩和麻粒岩相的修订意见,并指出高级区麻粒岩并非一定属于太古代产物。

鄂东岩浆岩成因类型及成岩演化探讨

本文总结了鄂东同熔型中酸性侵入岩浆岩酌基本特征;探讨了岩浆来源;分析了成岩物理化学条件;提出了岩浆演化的过程和成岩成矿系列。

关于赣中相山矿田相山“碎斑熔岩”

赣中相山矿田相山杂岩体的主体岩石——"碎斑熔岩"的成因和命名,长期看法不一,主要观点有火山喷发成因、火山溢流成因、火山侵出成因、潜火山侵入成因等,本文通过综述"碎斑熔岩"的岩石学和相带特征,结合剥蚀程度、密度垂向变化研究成果,论述了"碎斑熔岩"不是火山岩而是侵入岩的成因观点。同时,对相山是否存在潜火山岩提出了质疑,探讨了相山"碎斑熔岩"的形成深度问题。认为"碎斑熔岩"命名为碎斑花岗斑岩更符合其侵入成因特点。

Study on the Cause and Dynamics of Seawater Intrusion in Laizhou Bay

In this paper, we conduct research on the cause and dynamics of seawater intrusion in the Laizhou bay. To consider modelling the Laizhou bay, we should then take the listed tools into consideration. In actual engineering, wave is a complicated stochastic process. If the numerical value of wave model is a little too large, the wave attenuation should be considered sufficiently, such as wave refraction caused by terrain change, wave attenuation due to submarine friction, wave into the very shallow waters of the broken and small wind area. We integrate the current conition of the Laizhou bay and the further model the seawater intrusion steps. The uncertainty research of ground water solute migration is at present a ground water research area quite popular topic, but the seawater intrusion is the variable density class solute migration issue, applies the uncertainty analysis of seawater intrusion simulation also to have certain difficulty the existing research results. In the future, more simulation will be down to verify the effectiveness.