榴辉岩相
- 网络eclogite facies
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榴辉岩相阶段为高压相系;
The eclogite facies stage which is high-pressure facies ;
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作为榴辉岩相的早期共生矿物,它们的出现证明该区榴辉岩经历了超高压变质作用。
As the early coexisting mineral of eclogite facies , the occurrence of these mineral indicates that the eclogites in this district underwent ultrahigh pressure metamorphism .
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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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青岛榴辉岩相蛇绿混杂岩的岩石学证据及退变质P-T轨迹
Eclogite-facies ophiolite melange in qingdao : its petrological evidence and P-T path
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放射性同位素~(87)Sr/~(86)Sr初始值平均为0.7048,εNd值为-5.3,暗示岩浆起源于富集地幔,并受到榴辉岩相镁铁质岩石低熔组分混染。
Radioactive isotope ~ ( 87 ) Sr / ~ ( 86 ) Sr initialized average value is 0.7048 , and ε Nd value is - 5.3 , which show magma come of enriched mantle , and assimilated by the lower melt compositions from the eclogite face mafic rocks .
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晚期为高压绿片岩相榴辉岩相变质作用。
And the late one is high-pressure greenschist facies to eclogite facies metamorphism .
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青岛榴辉岩相变质古洋壳的特征及其成因
Characteristics of eclogite face metamorphic palaeo-ocean crust from Qingdao and its genesis significance
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关于大别山榴辉岩相变质作用
On the eclogite facies metamorphism in the Dabie Mountains
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根据熔浆-矿物平衡热力学,岩浆被认为起源于榴辉岩相条件下俯冲板片的部分熔融。
Based on the melt-mineral equilibrium thermodynamics , it is believed that the adakitic magma originated by partial .
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安徽太湖县石马超高压榴辉岩相岩石的岩石学研究(英文)
The petrology of ultrahigh-pressure eclogite-facies rocks in the proximity of Shima , Taihu County , Anhui Province , China ;
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研究结果表明:各类榴辉岩相岩石的流体包裹体均程度不同地发生了次生变化.未发现原生包裹体。
The studied results show that different secondary changes occurred in fluid inclusions of various rocks and no primary inclusion has been found .
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西阿尔卑斯与北阿平宁实为一体,但它在始阿尔卑斯发生了榴辉岩相变质。
In fact , the Western Alps and the North Apennine are in the same belt , but in Western Alps eclogitic metamorphism is widely spread .
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这套岩石在印支期(约230Ma)华北与扬子板块碰撞过程中经历了低温高压蓝片岩&榴辉岩相变质作用。
These sequences underwent low-temperature and high-pressure blueschist to eclogite facies metamorphism during the Indosinian ( c. 230 Ma ) collision between the North China and Yangtze cratons .
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因此,岩浆起源于加厚地壳底部榴辉岩相镁铁质岩石的低度部分熔融,且岩浆源区受到了流体的影响。
Therefore , the magmas were the product of low partial melting of mafic eclogite at the base of the thickened crust , and their magma sources were affected by fluids .
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富碱斑岩起源于滇西加厚地壳的下部(约55km处),源区岩石应是榴辉岩相的岩石;
Magmas of alkali-rich porphyries originated near the bottom ( about 55 km in depth ) of the thickened crust in western Yunnan ; the source rocks may be those of eclogite phase ;
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大别山太湖县石马超高压榴辉岩相岩石可分为两类:(1)以柯石英榴辉岩(已退变质)为代表的硅饱和岩石;
Ultrahigh-pressure eclogite-facies rocks in the proximity of Shima , Taihu County in the Dabie mountain are divided into two different types : ( 1 ) silica-saturated rocks , represented by coesite-bearing eclogite ( retrograded );
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随着温度和压力的增加,俯冲板片将发生高压到超高压榴辉岩相转变,大量的水将通过含水矿物的消失反应释放出来。
With increasing p T conditions , the subducting slab passes through the high pressure to ultrahigh pressure eclogite facies transition where large amount of H 2O are released by the breakdown of hydrous minerals .
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矿物组合和替代关系表明,这些岩石经历了早期的榴辉岩相变质作用和晚期的角闪岩相退变质作用,以及碰撞后期的部分熔融和混合岩化作用。
Mineral assemblages and substitute relations show that both the Neoproterozoic granitic gneisses and Precambrian metamorphic rock series suffered early eclogite-facies metamorphism and late amphibolite-facies retrograde metamorphism , and then suffered the post-collision partial melting and migmatization .
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深源捕虏体的岩相学研究表明,它们经历了早期的榴辉岩相变质和晚期的角闪岩相退化变质,然后被寄主岩浆所捕获。
The petrographical data of the deep seated xenoliths indicate that they could be subjected to earlier eclogite facies high pressure ( HP ) and ultra high pressure metamorphism ( UHPM ) and late amphibolite facies retrogressive metamorphism , then caught by the host magma .
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大别山南部的超高压变质带具有特征的榴辉岩相矿物组合。
The ultra-high pressure metamorphic belt in the southern part of the Dabie Mountains is mainly distributed in the subducted basement of the Yangtze plate ( the Dabie Group ) and composed of eclogite with small amounts of ultramafic and jadeite-quartzite blocks and their country rocks .
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宿松杂岩的变质条件介于其南部的蓝闪绿片岩相和北部的榴辉岩相之间,三者是扬子板块向华北板块之下俯冲到不同深度的产物。
The metamorphism of the Susong Complex is intermediate between that of the southern glaucophane greenschist facies belt and that of the northern eclogite facies belt , three of which represent the products of the different subduction depths of the Yangtze plate under the North China plate .
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西天山高压低温变质带中切割主岩蓝片岩/榴辉岩的榴辉岩相脉体记录了古生代俯冲带中的脱水过程。
Hydrous eclogite - facies veins cutting through the host blueschists / eclogites in the western Tianshan high-pressure-low-temperature metamorphic belt documented a dehydration process within a Paleozoic subduction zone .