Petrochemical compositions indicate that these early Precambrian intrusive rocks correspond to the I-type granites and consistently show LREE-enriched patterns. 岩石的化学成分表明,鲁西早前寒武纪侵入岩与Ⅰ型花岗岩相当,且均属轻稀土富集型;
Mineralogical and geochemical features suggest that the Dadongshan granites are highly fractionated I-type granites. 矿物学及地球化学结果表明大东山是一个高分异的I型花岗岩岩体。
Geochemical Characteristics and Tectonic Setting of Late Triassic Granites in Yanbian-Dongning Area 延边&东宁地区晚三叠世花岗岩地球化学特征及其大地构造背景
Igneous topazites found recently in South China are closely associated with F-rich granites in time and space. 新近在华南发现的黄英岩与富氟花岗岩存在密切的时空联系。
The alkali granites and their genesis and tectonic significance in the north area of the East junggar, xinjiang 新疆东准噶尔北部碱性花岗岩的特征、成因及构造意义
Themineralogical system of W-Sn granites helps to deepen metallogenic study and exploration of W-Sn deposits, and will be improved and perfected during the further researches. 提出的钨锡花岗岩成矿矿物学研究体系有助于深化矿床学研究和矿床勘探工作,并将在今后工作中进一步完善。
Petrochemical Characteristics of plutonic and volcanic granites and their origins 深成型和火山型花岗岩岩石化学特征及其成因分析
Then the cause for the large difference in ages of uranium deposits and host granites, the source of uranium and the origin of hydrothermal fluids have been elucidated in this paper. 在此基础上,阐明了花岗岩型热液铀矿床矿&岩时差的原因,阐述了对华南花岗岩型铀矿床铀源和热液来源的新认识。
Geochemical evolution characteristics of trace elements and REE in Gejiu granites 个旧花岗岩的微量元素和稀土元素地球化学演化特征
Based on43 isotopic ages of29 granite bodies in combination of their petro-geochemistries, the paper established a time coordinate for the granites of the orogenic belt. 本文利用义敦岛弧碰撞造山带29个花岗岩体的43件同位素测年数据,结合岩石地球化学特征,建立了造山带花岗岩的时间坐标。
In South China which lies in low latitudes, there are large quantities of granites and volcanic rocks, whose magnetic fields are different from those in other areas. 处于低纬度的华南发育了大量的花岗岩和火山岩,其磁场特征不同于其他地区。
Granites emplaced at deeper crust levels are unlikely mineralized due to a close or near-close magmatic system and lack of elemental and energy exchange with their country rocks. 一般来说,在下地壳层次侵位的岩体形成于封闭一半封闭环境,不利于岩浆系统中物质和能量的交换以及矿床的形成;
Geochemistry of Gneissic Alkaline Granites in Donghai County, Jiangsu Province, and Its Tectonic Significances 江苏东海片麻状碱性花岗岩的地球化学及其构造指示意义
The basement rocks are mainly TTG rocks with minor granites. 基底岩石中以TTG质岩石为主,少量为花岗质岩石。
The paper researches REE geochemistry characteristics of biotite granites, dikes and ore, considering granites, intermediate-basic dikes and mineralizing fluid have the consanguinity and inheritance; 本文对矿区的黑云母花岗岩、脉岩、矿石的稀土元素地球化学特征进行了系统研究,认为矿区的花岗岩、中基性脉岩、成矿流体具有同源性,继承性;
Zircon U-Pb dating of granites in Gejiu superlarge tin polymetallic orefield and its significance 与云南个旧超大型锡矿床有关的花岗岩锆石U-Pb定年及意义
The metamorphosed granites show an affinity of continental or continental margin. 大面积分布的古老花岗岩很可能是形成在大陆或大陆边缘环境。
Some diagnostic criteria for mineralized granites are summarized and reviewed, which include tectonic setting, zonation of granite, mobility of ore fluid, and geochemical and mineralogical indicators. 本文归纳总结了花岗岩成矿的几个判别标志:大地构造背景、花岗岩的环带构造、成矿流体可迁移性及自交代作用、矿物学和地球化学特徵。
Andes magmatism and its tectonic setting; 3. Granites and geodynamics processes; 安第斯山岩浆活动及大地构造环境:3.花岗岩及地球动力学过程;
Granitic tectono-magmatic assemblages mainly reflect the genetic connections between the magma types of granites and tectonic environments. 花岗岩的构造岩浆组合主要反映花岗岩的岩浆类型与大地构造环境之间的成因联系。
The voluminous alkaline granites in the region were probably from the same magma source, but crystallized at upper crust depth. 该地区体积巨大的碱性花岗岩可能也来自相同的岩浆源,只不过它是在较浅的地壳深度上结晶的。
Mesozoic Era granites in northwestern Fujian can be generally classified into two types: remelting type and syntectic type. 闽西北中生代花岗岩总体上可分为重熔型和同熔型两种类型。
This work aims to preliminarily establish a research system of ore-forming mineralogy for tungsten-tin granites in the Nanling Range. 初步建立了南岭地区钨锡花岗岩的成矿矿物学研究体系。
Completely decomposed granites with different structures are featured by brittle failure and creeppattern in triaxial tests. 结构特征不同的全风化花岗岩三轴试验分别表现出脆性破裂和塑性蠕变破坏特征。
The assemblages of accessory minerals of the granites show evident characteristics, which can be the classification criteria for the granites. 各类型花岗岩副矿物组成具有明显特点,因此可以利用副矿物和其组合特征作为划分花岗岩成因类型的判别标志。
The granites in Baiganhu deposit are closely related to W-Sn mineralization. 白干湖钨锡矿床发育大量与成矿关系密切的花岗岩。
The intra plate extension was induced by the Indosinian orogenic movement in South China continent under a regionally compressional framework to form Indosinian granites. 印支运动在区域挤压框架下导致华南大陆发生板内伸展作用,形成印支期花岗岩。
The Huangshan A-type granites with tetrad REE: constraints on Mesozoic lithospheric thinning of the southeastern Yangtze craton? 高度演化的黄山A型花岗岩:对扬子克拉通东南部中生代岩石圈减薄的约束?
Finally, a case study was made in the Qitianling granite complex, which is essentially composed of the Sn granites of Furong and Cailing, and the Xintianling W granite. 以湖南骑田岭花岗岩复式岩体为实例,进行了芙蓉-菜岭含锡花岗岩和新田岭含钨花岗岩的成矿矿物学对比研究。
Geology-geochemistry and petrogenesis of Late Hercynian granites in Baoshan area, Heilongjiang Province 黑龙江宝山一带海西晚期强过铝花岗岩地质地球化学及岩石成因