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- Here the basement is not the bottom of Mesozoic and Cenozoic basement, but is the old metamorphic rocks basement, i. e, the top of crystal crust. 基底不应专指中、新生代沉积地层的底部,而应为古老的变质岩基底,即结晶地壳的顶部。
- old metamorphic rocks basement 古老变质岩基底
- The idenfication of the granitic gneiss has a great significance to study the old metamorphic rock system of Kuruktag and the crustal evolution in the early geological history. 该花岗质片麻岩的确认对重新认识库鲁克塔格一带的古老变质岩系和探讨早期地壳演化具有重要意义。
- Minhe Basin is a Mesozoic-Cenozoic intermont basin grew on Precambrian metamorphic rock basement in middle Qilian uplift zone.Total thickness of Mesozoic-Cenozoic is about 7000 meters. 民和盆地是发育在中祁连隆起带前寒武系变质岩基底之上的一个中、新生代山间盆地。
- The lower Proterozoic Badu Group is one of the oldest metamorphic rock series in the continental margin of Southeast China,and is an integral part of the early Precambrian Zhejiang-Fujian craton. 下元古界八都群是中国东南大陆边缘最古老的变质岩系之一,为早前寒武纪浙闽克拉通的主要组成部分。
- The Archaean Jining Group, of dominant granulite fades metamorphism, is stratigraphically the oldest metamorphic rock series in the south Nel Mongol of China. 集宁群变质岩系按其岩性共分上、下二个岩组;
- The layered structure common to metamorphic rocks. 叶理象变质岩一样的岩石层状结构
- The metallogenic substance mainly comes from the Archeozoic metamorphic rock series in basement. 成矿物质主要来源于基底太古界变质岩系。
- Metamorphic rock having porphyritic texture. 残斑岩具斑岩状结构的变质岩。
- The Early Precambrian rocks are the important constituent of old metamorphic terrains in Liaoning province, mainly in metamorphic facies higher than greenschist and locally reaching granulite facies. 摘要早前寒武纪变质岩系是辽宁地区古老变质岩系的重要组成部分,变质程度高于绿片岩相,局部可达麻粒岩相。
- What kinds of regional metamorphic rocks are present in the area? 在这一地区有哪些种类的区域变质岩?
- The neo-Archean rocks possibly exist in Tieklik metamorphic rocks. 铁克力克可能有新太古代变质岩系的存在。
- Even foliated metamorphic rocks and banded gabbro can be curved to form folds. 即使变质岩中的片理以及辉长岩中的条带也可产生弯曲而形成褶皱。
- The first type is residuals of metamorphic rocks of high amphibolite facies. 一类为属于高角闪岩相的变质岩(残余)包体;
- Marble, a metamorphic rock, forms when limestone re-crystallizes. 大理岩,一种变质岩,在灰岩重结晶时形成。
- The ore-forming fluid is of medium-low temperature, low salinity, and low fugacity of O2 and S2. The metallogenic substance mainly comes from the Archeozoic metamorphic rock series in basement. 成矿流体为中低温、低盐度、弱酸性、低氧逸度和硫逸度。 成矿物质主要来源于基底太古界变质岩系。
- A thin, leaflike layer or stratum occurring especially in metamorphic rock. 叶形线薄的叶状地层,尤其出现于变质岩中
- Hard metamorphic rock consists essentially of interlocking quartz crystals. 坚硬的变质岩,主要由嵌合的石英晶体组成。
- A thin,leaflike layer or stratum occurring especially in metamorphic rock. 叶形线薄的叶状地层,尤其出现于变质岩中
- Resembling metamorphic rock in consistency,texture,venation,color,or coldness. 与大理石相似的在硬度、质地、脉纹、色彩或冷度上象变质岩的