地学研究的一个发展趋势

今天的地质科学,在研究方法上正向着综合性方向前进;在研究领域上,正向着更广阔的方向发展。这一点在二十七届国际地质大会上夏映比较突出。当前最重要和最大量的地质科学研究项目中,无论是岩石圈动力学计划,还是板块构造的研究。都是多种学科相互配合地进行,既需要构造地质学,又需要地球物理、地球化学,     

关于南岭花岗岩时代和分期讨论的倡议

Based upon the present research stratus on Nan Ling granites and in the view of the defferenees in the opinions on the ages and periodic division of Nan Ling granites existing among some research units concerned, a proposal has been snbmitted in the paper, pointing out that it is quite necessary to launch a discussion in the deeper-going way on the problem involving the ages of Nan Ling granites and their periodic division in the journal “GEOCHIMICA”. The main topics expected to be discussed are as follows : (1) The existanec of Hereynian granites and the possibility of the formation of non-orogenic granites; (2) The divisional boundary between Yeushanian and Indonsinian granites and their distributional characteristics; (3) The periodic sub-division of Yenshanian granites and their relatiouship with mineralization ; (4) The division of the ,ages of granites older than the Caledonian period.     

华南花岗岩铀矿中硅化带—绿泥石化带—碱长交代体三位一体的演化模式

华南花岗岩铀矿中,广泛发育硅化带、绿泥石化带和碱长交代体,这些是热水型铀矿成矿前大规模强烈的热液活动的产物,既是成矿的前奏,又是成矿的基础,因而对其研究不仅有重要的理论意义,而且也有很大的实用价值。硅化带早在六十年代即为某些单位地质人员所认识;碱长交代体是作者于1964年确认的;绿泥石化带做为一个与铀矿有关的地质体,尚未引起人们的注意。     

华南花岗岩分类与锶同位素和莫霍面的关系:花岗岩系列/类型分布与锶同位素趋势面分布和莫霍面深度变化的制约

根据花岗岩系列和类型编图,华南地区浅源南岭系列（系列I）花岗岩多产于中部和西部,深源长江系列（系列Ⅱ）花岗岩主要分布在东部。诸广山型（I1型）、大容山型（I2型）和关帝庙型（I3型）花岗岩的重点分布区,分别在中心腹地、西部和西北部湖南境内;宁芜型（Ⅱ1型）、德兴型（Ⅱ2型）和闽浙沿海型（Ⅱ3型）花岗岩的重点分布区,分别在长江中下游、中西与中东部深断裂带、东南沿海地区。花岗岩系列、类型的趋势面分析和莫霍面深度变化与上述花岗岩系列、类型分布特点对应得非常好,它们的等值线变化趋势几乎重合,相互间吻合一致,可以认为花岗岩的形成与地幔莫霍面的隆起与坳陷密切相关,地幔隆起区产出深源系列Ⅱ花岗岩,其中Ⅱ1、Ⅱ3型花岗岩尤为典型;地幔坳陷区发育浅源系列I花岗岩,以I2、I3型花岗岩很显著。     

太平洋东西两岸花岗石的相似性

传统的看法多认为太平洋东西两岸花岗岩是截然不同的两类花岗岩，根据对美国西部实地考察，结合笔者长期对华南花岗岩的研究结果，可以看出两岸花岗岩在形成时代、成因类型、地理分布、成矿种类和演化等方面是类似或相同的。     

云南老王寨金矿煌斑岩蚀变、矿化过程中元素活动规律

广泛分布于云南老王寨金矿、与金矿化在时间上、空间上密切共生的煌斑岩普遍遭受不同程度的蚀变，部分经历了矿化作用，根据岩石的蚀变程度及是否矿化可将本区煌斑岩发成新鲜（弱蚀变）、蚀变、矿化三种。质量平衡方程对煌斑岩蚀变、矿化过程中元素活动规律的计算结果表明，引起本区煌斑岩蚀变的流体为一种含过渡元素、新石元素、挥发性元素和亲硫元素（或成矿元素）的富硅、铝碱性流体，这种流体可能是本区煌斑岩石浆演化到晚期分异出来的产物；引起本区煌斑岩矿化的为富含Ｋ２Ｏ、ＣａＯ、ＣＯ２、Ｆ、Ｃｌ、Ｓ、Ａｓ、Ｓｂ、Ａｕ、Ａｇ等元素的流体，这种流体具有多源性     

云南老王寨金矿区煌斑岩主元素对比及其意义

通过对云南老王寨金矿区新鲜、蚀变、矿比煌斑岩主元素对比,初步讨论了该区煌斑岩在蚀变、矿化过程中主元素的迁移规律,提出了三种煌斑岩主元素的判别方法;主元素对比结果对探讨煌斑岩与金矿化的成因关系有重要意义。     

南岭诸广山花岗岩体的多次侵入活动和某些地球化学特征

The eleven successive magmatic activities of the southern mass of the Zhuguangshan granitic batholith can be divided into four intrusive episodes: Calidonian, Late Hercynian, Yenshanian and one of younger age, based on intrusive contact observations in the field, isotope ages and petrological-geochemical evidences, Genetically, rocks of each of the four episodes have their own features. The Yenshanian granites are characterized by a strong tendency toward differenciation. Variation in oxygen fugacity and in lithofacil character of the rocks indicates that the two earlier phases of the Yenshanian granites are emplaced in greater depth in a tectonick stable environment,while the later two phases are of relatively hypobyssal character under more active geological conditions.     

REE Geochemical Indicatrices of Li—F Granite Liquid Segregation

The results of 118 REE analyses of Li-F granites from South China and other countries indicate that there are three variation types of REE pattern curves with different evolution trends from early to late stages of Li-F granite complex of from lower to upper petrofacies of the Li-F granite body;(1) the decreasing,(2) the increasing,and (3) the saltatory variation types.The first variation type is called the positive evolution type,attributed to crystallization differentiation.The second is called the reversion evolution type.which represents liquid segreation dominated by vapor-liquid distillation.The third is called the saltatory variation type,which is formed from liquid segregation dominated by immiscibilty,Therefore,the indicatices of liquid segregation dominated by immiscibility are the saltatory variation type of REE pattern evolution and the separation of the main evolution trend lines either from the sub-evolution trend lines or from the composition points of Li-F granites in the diagrams of REE-(La-Yb)N and La/Sm-La,The indicatrices of liquid segregation dominated by vapor-liquid fractional distillation are the reverstion evolution type of REE pattern curves and the main evolution trend lines of Li-F granites directing to the upper right-hand on the REE-La/Yb)N and La/Sm-La diagrams.