辉岩
- pyroxenite;pyrozenite
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甚至在南段之内,辉岩组中的矿层对比目前也不肯定。
Even within the southern sector , correlation of seams in the pyroxenite series is at present uncertain .
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岩体内的石榴辉石岩和榴辉岩包体,具高温成因的特点。
The eclogite and garnet pyroxenite enclaves are of high-temperature genesis and are products of partial melting of the upper mantle .
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青岛C类榴辉岩的岩石学矿物学及其地质意义
The petrology and mineralogy of group C Eclogite at Qingdao and its geological significance
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石榴子石以铁铝榴石和钙铝榴石为主,属于C类榴辉岩。
The garnets consist mainly of almandine and grossularite , and belong to C-type eclogite .
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大别山北部榴辉岩的Pb同位素特征
Pb isotopic characteristics of the eclogites from the northern Dabie Mountains
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冀北退变榴辉岩的Pb同位素特征
Pb isotope characteristics of retrograded eclogites from northern Hebei , China
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大别&苏鲁超高压榴辉岩中Pb同位素分析的实验技术研究
Pb Isotopic Analysis Technique of Eclogite from Dabie-Sulu Orogenic Belt
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回归计算表明,榴辉岩热导率和P波速度之间的相关性较大,相关系数在0.7左右,片麻岩显示的相关系数比较小,在0.4~0.5之间。
The regression analysis of thermal conductivity vs. ultrasonic velocity yields a correlation coefficient of about 0.7 for eclogite and 0.5-0.4 for gneiss .
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因此,不含榴辉岩的花岗片麻岩多硅白云母基本不含过剩Ar。
Therefore , phengite from granitic gneiss without eclogite basically contains no excess Ar.
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榴辉岩中石榴子石退变质环带对高压变质矿物之间Nd,O同位素平衡的影响
Effects of Retrograde - Zoning of Garnet in Eclogite on Nd and O Isotopic Equilibrium between High-Pressure Minerals
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它表明榴辉岩回返时首先沿俯冲带缓慢上升到较浅部位,出现与进变质过程相似的P-T轨迹;
It indicates that the eclogites may , firstly , ascend slowly along the subduction zone to a shallow level , resulting in a P-T path similar to the prograde path ;
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利用电子探针等方法研究了青岛榴辉岩相变质古洋壳(蛇纹岩、C类榴辉岩和基性糜棱岩)的岩石学和地球化学特征。
The petrological and geochemical characteristics of the eclogite face metamorphic palaeo-ocean crust ( serpentite , type C eclogite and basic mylonite ) have been studied with electron-probe and other methods .
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西大别超高压榴辉岩中石英脉锆石年龄和Hf同位素组成
Zircon U-Pb age and Hf isotope composition of a quartz vein in ultrahigh-pressure eclogite from the western Dabie orogen
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峨眉地幔柱轴部的榴辉岩-地幔岩源区:主元素、痕量元素及Sr、Nd、Pb同位素证据
The Axial Zone Consisting of Pyrolite and Eclogite in the Emei Mantle Plume : Major , Trace Element and Sr-Nd-Pb Isotope Evidence
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金红石的TiO2含量在95%(重量)以上,多产于石英榴辉岩、多硅白云母榴辉岩中。
The TiO2 content of rutile is above 95 % wt. which are mainly occurred in quartz eclogite and phengite eclogite .
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部分榴辉岩具有高的全岩δ13C值,指示其形成后受到过含CO2流体的退化蚀变。
Some of the eclogites with the high δ 13C values suffered retrograde alteration by CO 2-bearing fluids .
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大别山西部蓝闪榴辉岩U-Pb测年
U_Pb Zircon Dating of Glaucophane Eclogites from western Dabie Mountain
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辉石岩包体含有绿色的Cr辉石岩和黑色的Al辉石岩包体两种类型,均为二辉岩,且多数样品中单斜辉石含量高于斜方辉石。
Two types of pyroxenite xenoliths are noted , namely , green Cr-and black Al-pyroxenites . All pyroxenites are websterites in which clinopyroxene is more abundant than orthopyroxene .
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CCSD主孔高Ti榴辉岩非耦合的高Ti、低Nb(Zr)特征:对玄武质岩浆房中磁铁矿分离结晶作用的指示
Decoupled high-Ti from low-Nb ( Zr ) of eclogites from the CCSD : Implications for magnetite fractional crystallization in basalt chamber
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应用EAMS连线技术,对大别山东部和苏鲁地体南部超高压变质榴辉岩及其中的磷灰石进行了碳的含量和同位素分析。
The carbon concentration and isotope composition of ultrahigh pressure eclogite and apatite separate from the Dabie-Sulu orogen were analyzed by the EA-MS online technique .
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苏北榴辉岩至少存在高压壳源型(H型)、超高压壳源型(U型)和幔源型(M型)三类。
The eclogites in northern Jiangsu have at least three types : high pressure crustal type ( H_type ), ultrahigh pressure crustal type ( U_type ) and mantle type ( M_type ) .
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大别-苏鲁造山带大理岩中榴辉岩包体的锆石U-Pb年龄及其地质意义
Zircon U-Pb Dating of Marble-associated Eclogite in the Dabie-Sulu Orogenic Belt and Its Geological Implications
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CCSD主孔榴辉岩退变质过程中的元素活动性
Geochemical Behavior of Trace Elements in Eclogites from the CCSD Main Hole during Retrograde Metamorphism
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结果表明,这两种片麻岩在氧同位素组成上存在显著差别:黑云母片麻岩与共生的榴辉岩δ18O值呈同步变化,全岩δ18O值从-4.7‰变化至+10.3‰;
The results show significant differences in oxygen isotope composition between biotite gneiss and granitic gneiss .
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安徽石马UHP-Ky榴辉岩中绿辉石变形结构的HREM研究
HREM Study of The Deformed Microstructure of Omphacite in UHP Ky eclogite from Shima , Anhui Province
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CCSD主孔榴辉岩中磷灰石的矿物化学特征及对榴辉岩中F、Cl、Sr等元素地球化学行为的影响
On the Mineral Chemistry of Apatite in Eclogites From the CCSD Main Borehole and the Geochemical Behaviors of F , Cl , Sr and Other Elements in Eclogites
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大别山石马地区榴辉岩P-T-t轨迹及其构造意义
P-T-t paths and its tectonic significance of eclogites from shima , Dabie Mountains
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选择新鲜的保存较好的榴辉岩分别进行U-Ph和Ar-Ar同位素年代学测定,含石榴子石的白云母片麻岩(此榴辉岩的围岩)被选用于白云母的Ar-Ar测定。
A fresh eclogite sample is selected for U-Ph isotopic dating of zircon and Ar-Ar dating of phengite , and a garnet-bearing muscovite gneiss sample ( country rock of eclogite ) for Ar-Ar dating of muscovite .
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由于榴辉岩与其他岩石类型之间存在较大的波阻抗差异,因此用零偏VSP资料标定该区地震波的地质层位是有效的。
Since large impedance contrasts exist between eclogite and other rocks , it is effective that the VSP profiles are used to calibrate geological horizons of seismic reflections .
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对大别-苏鲁造山带27个高级变质岩(以榴辉岩和片麻岩为主)中锆石进行了337次微区离子探针U,Th和Pb测定和U-Pb年龄研究。
337 zircon U , Th and Pb contents , and Pb isotopic compositions of 27 high-grade metamorphic rocks , mainly eclogites and gneisses from Dabie-Sulu orogen were analyzed by using ion micro-probe technique .