2) retrograded eclogite
退变榴辉岩
1.
Pb isotope characteristics of retrograded eclogites from northern Hebei, China;
冀北退变榴辉岩的Pb同位素特征
2.
The retrograded eclogites on the northern margin of the North China Craton occur as tectonic lenses within biotite-plagioclase gneisses in the Paleoproterozoic Hongqiyingzi Group characterized by amphibolite-facies parageneses.
华北古陆块北缘退变榴辉岩呈透镜状产于角闪岩相变质的早元古宙红旗营子群黑云斜长片麻岩中,岩相学研究显示它经历了峰期榴辉岩相、减压过程中的高压麻粒岩相和角闪岩相变质作用。
3) Retrograde eclogite
退变榴辉岩
1.
This study presents the open and dehydration melting experiments on one solid retrograde eclogite and three amphibolites from Dabie UHPM belt, Dongchonghe in Yingshan, Hubei province.
实验选取了湖北英山东冲河大别超高压变质带内的一个退变榴辉岩和三个斜长角闪岩天然样品，在0。
4) retrograde metamorphic eclogite type
退变榴辉岩类
1.
The dip angles of eclogite and retrograde metamorphic eclogite type foliations in 100～2?950 m core of the CCSD main hole are obviously steeper than the angles of gneiss type foliations, with the former angles being generally 55° or so and the latter around 28°.
CCSD主孔100~2950m榴辉岩、退变榴辉岩类岩石叶理倾角明显较片麻岩类岩石叶理倾角陡,前者总体倾角55°左右,后者28°左右,局部可见片麻岩类叶理切割榴辉岩类叶理,因此两者叶理可能形成于不同时期;两类岩石之间现部分为韧性剪切带接触关系,韧性剪切带形成于苏鲁地体折返主期自SEE向NWW的韧性剪切作用。
5) eclogite-facies metamorphism
榴辉岩相变质
1.
Previous studies on ultrahigh-pressure (UHP) metamorphic rocks in the northern Dabie indicated that the eclogites experienced granulite-facies retrogression after eclogite-facies metamorphism, and the obtained mineral Sm-Nd isochron ages therefore represented the time of granulite-facies retrogr ession.
前人工作认为北大别榴辉岩在榴辉岩相变质后,经历了麻粒岩相退变质作用,因此获得的Sm-Nd矿物等时线年龄代表了麻粒岩相变质时代。
6) eclogitic metapelites
榴辉岩相变质泥质岩
补充资料：榴辉岩
| 榴辉岩 eclogite 一种变质岩。由区域变质作用形成。主要由绿辉石和富镁的石榴子石组成。典型的榴辉岩不含斜长石，可含少量石英、蓝晶石、金红石、尖晶石等。具不等粒变晶结构及块状构造。有3种产出状态：①呈包裹体产于金伯利岩和层状超基性岩中。②呈夹层状、透镜体产于角闪岩相和麻粒岩相的岩石中。③呈夹层或透镜体产于蓝闪石-硬柱石片岩相岩石中。通常认为它是在极高压条件下形成的岩石，但温度变化范围较大。金伯利岩中的榴辉岩包体波认为是地幔物质的产物。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条