查询词典 granites

This rock zone, with a NE striking, the whole length of 1 400 km and the width of 100～150 km, is characterized by not onlyalkaline rocks (analcite biotite olivine melilitites, leucititic alnoites, nephelite syenites, aegirite augite syenites, melanite syenites, riebeckite syenite and aegirite bearing quartz syenites) and alkaline granite (riebeckite granite, and aegitite augite riebeckite granite), but also a lot of syenites, monzonites and alkaline feldspar granites or miarolitic K feldspar granites.

该岩带全长约1400km，宽100～150km，不仅发育有狭义的碱性岩(方沸黑云橄榄黄长岩、白榴黄长煌斑岩、霞石正长岩、霓辉石正长岩、黑榴石正长岩和含霓石石英正长岩)和碱性花岗岩(钠闪石花岗岩、霓辉石钠闪石花岗岩)，还发育有大量的正长岩类二长岩类碱长花岗岩或晶洞钾长花岗岩。

The volcanic rocks of the Xiong'er Group is also widespread in the Baoji and Lvliang area and also appear as 1.75Ga-old mafic dyke swarms, A-type granites, later anorthosite and rapakivi granites (1.75-1.70Ga), and alkaline granitoids (~1.65Ga). These intrusive rocks are assumed to have genetic link to the volcanic rocks of the Xiong'er Group.

熊耳期岩浆活动在华北陆块广泛分布，除了陕西宝鸡附近及山西吕梁地区的火山岩，还广泛分布1.75Ga前后的基性岩墙群、A-型花岗岩以及比熊耳群稍晚的斜长岩、奥长环斑花岗岩等(1.75-1.70Ga)和碱性花岗岩类(~1.65Ga)。

It has been shown in the Al(Na+K+Ca/2) diagram that the Jinla granitoids are all plotted within the area of "S" type of granites, but the samples from Laochang amphibole admellite, Menglinshan biotite admellite and Nanla K-feldspar graniteporphyry are scattered gradually far away from the boundary between "I" and "S" types of granites, implying that the components from the upper mantle gradually decreasing from the Laochang amphibole admellite to the Menglinshan biotite admellite and then to the Nanla K-feldspar granite porphyry.

3上述三类花岗岩样品皆位于S型花岗岩区，但从老厂似斑状角闪二长花岗岩，勐林山似斑状黑云二长花岗岩，到南腊碱长花岗斑岩，样品分布逐渐远离"I"型花岗岩和"S"型花岗岩的分界线，这表明自老厂似斑状角闪二长花岗岩至勐林山似斑状黑云二长花岗岩，到南腊碱长花岗斑岩幔源组分逐渐减少。

The influence of kinetic friction force on the penetration depth into granites is analyzed. The equations of resistance and depth for normal penetration into granites by rigid projectiles are presented.

通过分析动摩擦力对侵彻深度的影响，得到刚性弹丸垂直侵彻花岗岩时的阻力和深度计算公式。

Calidonian granites are widely developed in the Yema Nanshan area in the western segment of the Qilian orogenic belt. The geochemical characteristics of most of the granites are similar to those of adakites: SiO2≥56%, Al2O3≥15.0%, low MgO (average 2.04%), high Sr (257-889μg/g, average 546.42μg/g), low Y (7.1-25.3μg/g,average 16.67μg/g), average Sr/Y=5.89, no pronounced Eu anomaly and Sr positive anomaly. Adakites in this area have five rock types, quartz diorite, quartz monzodiorite, quartz monzonite, monzogrannite and hornblende granite. These rocks commonly contain hornblende, belonging to I-type granites.

提要：祁连西段野马南山一带发育大量的加里东期花岗岩，其中大部分花岗岩具有与adakite岩相似的地球化学特征，SiO2≥56%， Al2O3≥15.0％，低MgO（平均2.04％），高Sr(257～889μg/g，平均值546.42μg/g)，低Y（7.1～25.3μg/g，平均16.67μg/g），Sr/Y平均为35.89μg/g，Eu无明显负异常，Sr正异常，Adakite岩石类型有石英闪长岩、石英二长闪长岩、石英二长岩、角闪花岗岩、二长花岗岩，岩石中普遍含有角闪石，属I型花岗岩，地球化学图解反映该花岗岩形成环境为板块碰撞前的岛弧型，锆石U-Pb同位素年龄为444+38/-33 Ma，处在祁连造山带板块俯冲收缩阶段，因此可以推断野马南山埃达克质Adakite花岗岩是俯冲板片部分融熔和壳幔岩浆混合形成的。

Our stuc1 indicates that the majority of the granites in Naniclan-Hechi metallogenetic belt belong to POG, while the later stage alaskite belongs to RRG+CEUC. The granites were formed at the stage of structure transformation from postorogenic phase to intraplate setting. But the major structural environment is steady regional extension. The formation age for the granites represents the time of this transformation, and this translation environment is favored for large-scale metallogenesis.

研究表明，区内燕山晚期花岗岩主体属后造山花岗岩类，最晚期的白岗岩为RRG+CEUG型，带内岩浆岩形成于后造山向板内环境的转化阶段，主体构造环境则为较稳定的区域拉张，岩体侵位时代代表了区内构造环境的转折时期，这种区域构造体制的转换是大规模成矿的有利动力学条件。

Subchondritic or approximate chondritic Nb/Ta rations are observed in mantle-derived plagioclase granites and alkaline granites related to the tectonic settings of rift or hot sports. General granites possess very low Nb/Ta (0), even Nb/Ta ≤1 for highly evolved granites.

花岗岩中的幔源斜长花岗岩及与裂谷、热点环境有关的碱性花岗岩Nb/Ta比值近于地球平均值，而普通S型及I型花岗岩，特别是高演化花岗岩，Nb/Ta比值均明显低于球粒陨石(0)，甚至呈现Nb/Ta≤1。

Detailed geology- petrology-mineralogy study shows that late Triassic-early Jurassic granites can be divided into 4 groups: granodiorites, monzonitic-K syenogranites mainly, alkali feldspar-alkali granites and syenite, Middle Jurassic granites is composed of quartz diorites-granodiorites and monzonitic granites, the main rock type includes granodiorites and monzogranites; Early Cretaceous granites include alkali gabbro, alkali granites and granodiorites, and these rocks composed bimodal igneous rock group.

详细的地质-岩石矿物学研究表明，晚三叠-早侏罗世花岗岩可以划分成四种岩石组合，即花岗闪长岩组合、二长花岗岩—正长花岗岩组合、碱长花岗岩—碱性花岗岩组合和正长岩组合，其中以二长花岗岩—正长花岗岩组合为主；中侏罗世花岗岩由石英闪长岩-花岗闪长岩组合和二长花岗岩组合构成，岩石类型以花岗闪长岩和二长花岗岩为主；早白垩世出现了碱性辉长岩、碱性花岗岩和花岗闪长岩，构成双峰式火成岩组合。

Based on isotopic ages and the cycle of magamtism, the ages of Yanbian granites can be subdivided into five periods:①late Permian granites (260-245Ma), the typical plutons are Liukesong and Liangbing plutons, and the main rock type include diorite-monzonitic-K syenogranites;②Triassic granites (225-200Ma), the typical plutons are Sandaogou, Chunyang, Qishiergedingzi, Dahuanggou, Naozhi, and Qinglinzi plutons, the main rock type include quartz dioritesgranodiorites-monzonitic-alkali granites;③early Jurassic granites (190-180Ma), which composed of quartz diorites-granodiorites - monzonitic ,and the typical plutons are Shimen, Miantian, Daxinggou and Yushuchuan rock;④Middle-Late Jurassic (170-150Ma), which composed of granodiorites- monzonitic- garnet-bearing muscovite granites, the typical plutons are Huangniling, Weizigou, Loutuoshan and Dongqing rock;⑤early Cretaceous (about 130Ma), the typical pluton is Zhongping pluton, and its rock type is paulite diorite.

另外，根据同位素年龄和岩石组合并考虑到岩浆的旋回性，将延边显生宙花岗岩进一步划分为五个期次：1。晚二叠世(260-245Ma)，代表性岩体为六棵松和亮兵，主体岩性为辉石闪长岩、二长花岗岩和钾长花岗岩；2。三叠世(225-200Ma)，代表性岩体为三道沟、春阳、七十二个顶子、大荒沟、闹枝、青林子，岩石组合为石英闪长岩—花岗闪长岩—二长花岗岩—碱长花岗岩，以花岗闪长岩和二长花岗岩为主；3。早侏罗世(190-180Ma)，石英闪长岩—花岗闪长岩—二长花岗岩组合，主体岩性为花岗闪长岩，代表性岩体有石门、棉田、大兴沟、榆树川等；4。中侏罗世(170-150Ma)，主体岩性为花岗闪长岩和含石榴石花岗岩，代表性岩体有黄泥岭、苇子沟、骆驼山、东清5。

From about 206 Ma there occurred arc-continent collision accompanied by compressional contraction and shearing deformation of the arc crust and development of syn-collision granites. In the late Yanshanian epoch (138-73 Ma) post-orogenic extension came into action and resulted in the generation of A-type granites. During the Himalayan (65-15 Ma) intra-continental orogenic movement a large-scale strike-slip thrusting induced the intrusion of granites and development of pull-apart basins.

据此，再造了造山带的形成过程与演化历史：印支期的大规模俯冲造山作用(238～210 Ma)，形成义敦火山岩浆弧；大约自206 Ma始，发生弧-陆碰撞，伴随岛弧地壳挤压收缩和剪切变形，发育同碰撞花岗岩；进入燕山晚期(138～73 Ma)，岛弧碰撞造山带发生造山后伸展作用，形成A型花岗岩带；喜马拉雅期发生陆内造山作用(65～15 Ma)，岛弧碰撞造山带出现逆冲-推覆和大规模走滑平移，伴随喜马拉雅期花岗岩的侵位和拉分盆地的形成。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。