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单词 Eclogite Facies
释义

Eclogite Facies

英语例句库

The former three stages reflect the major process of eclogite facies metamorphism and the latest stages the light overprinting of greenschist facies retrometamorphism at the shallow level of crust.

前三个阶段反映了榴辉岩相变质作用的主要过程。后一阶段,反映了榴辉岩在地壳浅部层次绿片岩相环境下遭受轻微的叠加改造。

中文百科

榴辉岩 Eclogite

(重定向自Eclogite Facies)
Photomicrograph of a thin section of eclogite from Turkey. Green omphacite (+ late chlorite) + pink garnet + blue glaucophane + colorless phengite.
Eclogite from Almenning, Norway. The red-brown mineral is garnet, green omphacite and white quartz.

榴辉岩是一种变质岩。为块状、具有粒性变晶结构;主要由绿色的辉石和浅红色的石榴石组成,有时也含有蓝晶石、金红石和角闪石等。比重大(3.6-3.9),是变质岩中密度最大的岩石,是岩浆岩在极大的压力下变质产生的,温度不限,在低温或高温下都可以相成这种变质岩,在中国,主要分布在东部沿海和大陆架深层海底。

英语百科

Eclogite 榴辉岩

(重定向自Eclogite Facies)
Eclogite piece with a garnet (red) and omphacite (greyish-green) groundmass. The sky-blue crystals are kyanite. Minor white quartz is present, presumably from the recrystallization of coesite. A few gold-white phengite patches can be seen at the top. A 23 mm coin added for scale.
Eclogite
Photomicrograph of a thin section of eclogite from Turkey. Green omphacite (+ late chlorite) + pink garnet + blue glaucophane + colorless phengite.
Eclogite from Almenning, Norway. The red-brown mineral is garnet, green omphacite and white quartz.

Eclogite /ˈɛklət/ is a mafic metamorphic rock. Eclogite forms at pressures greater than those typical of the crust of the Earth. An unusually dense rock, eclogite can play an important role in driving convection within the solid Earth.

The fresh rock can be striking in appearance, with red to pink garnet (almandine-pyrope) in a green matrix of sodium-rich pyroxene (omphacite). Accessory minerals include kyanite, rutile, quartz, lawsonite, coesite, amphibole, phengite, paragonite, zoisite, dolomite, corundum, and, rarely, diamond. Plagioclase is not stable in eclogite.

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更新时间:2025/6/21 6:45:35