migmatite

简明释义

英[ˈmɪɡmətaɪt]美[ˈmɪɡmətaɪt]

n. [岩] 混合岩，复片麻岩

英英释义

单词用法

同义词

反义词

例句

1.The Middle Proterozoic group Strata in northwest Fujian had been Subjected metamorphism in Caledonian orogeny, and formed a metamorphic rock association of schist-gneiss-migmatite series.

闽西北中元古代地层在加里东运动期间遭受了变形变质作用，形成了一套片岩—片麻岩—混合岩系变质岩。

2.The Weipu granitic pluton and the Changpu migmatite are developed in the southern part of the Wuyi tectonic belt, South China.

闽西玮埔岩体和赣南菖蒲混合岩位于武夷山构造带南部地区。

3.The basement strata and the migmatite, however, were formed much later, about Cambrian period and early palaeozoic era.

但其基底地层和混合岩形成时代较晚，为寒武纪和下古生代。

4.The Middle Proterozoic group Strata in northwest Fujian had been Subjected metamorphism in Caledonian orogeny, and formed a metamorphic rock association of schist-gneiss-migmatite series.

闽西北中元古代地层在加里东运动期间遭受了变形变质作用，形成了一套片岩—片麻岩—混合岩系变质岩。

5.Migmatite and mechanism of migmatization have been controversial issues in the study of geology and petrology for the past so years.

有关混合岩及混合岩化作用形成机理的不同认识，至今在地质学和岩石学中仍是一个争论问题。

6.The presence of migmatite 混合岩 in the area suggests significant tectonic activity in the past.

该地区存在migmatite 混合岩，表明过去有显著的构造活动。

7.Geologists often study migmatite 混合岩 to understand the processes of crustal melting and re-crystallization.

地质学家常常研究migmatite 混合岩以理解地壳熔化和再结晶的过程。

8.In some mountain ranges, migmatite 混合岩 can be found at the core, surrounded by younger sedimentary rocks.

在一些山脉中，migmatite 混合岩可以在核心部分找到，周围环绕着较年轻的沉积岩。

9.The geological survey revealed that the region was primarily composed of migmatite 混合岩, indicating a history of high-grade metamorphism.

地质调查显示该地区主要由migmatite 混合岩组成，表明其经历了高等级的变质作用。

10.Field studies have shown that migmatite 混合岩 often forms in regions where continental plates collide.

实地研究表明，migmatite 混合岩通常形成于大陆板块碰撞的地区。

作文

The study of rocks and their formation is a fascinating field in geology. Among the various types of rocks, migmatite (混合岩) stands out due to its unique characteristics and formation processes. Migmatite is a type of metamorphic rock that exhibits both igneous and sedimentary features, making it a hybrid rock. This dual nature arises from the intense heat and pressure conditions that rocks undergo deep within the Earth’s crust. When parent rocks, typically granitic or gneissic, experience partial melting, they can produce a mixture of solid and molten material. The result is migmatite, which often displays a banded or streaked appearance due to the segregation of minerals during this process.Understanding migmatite is essential for geologists as it provides insights into the geological history of an area. The presence of migmatite can indicate that the region has experienced significant tectonic activity, such as continental collisions or subduction events. These processes generate the extreme conditions necessary for the formation of migmatite. Therefore, studying these rocks can help scientists reconstruct past geological events and understand the evolution of the Earth's crust.The formation of migmatite typically occurs in high-grade metamorphic environments where temperatures exceed 650 degrees Celsius. As the original rock undergoes metamorphism, some minerals begin to melt, while others remain solid. This partial melting can lead to the formation of new minerals, including feldspar and quartz, which are common in migmatite. The solid portions of the rock may retain their original textures, while the melted sections can flow and crystallize into new forms, resulting in the distinctive banding seen in many migmatite specimens.In addition to its geological significance, migmatite also holds aesthetic value. Many rock collectors and enthusiasts appreciate its unique patterns and colors, which can range from light grays to deep blacks, often interspersed with white or pink streaks. The visual appeal of migmatite makes it a popular choice for decorative stone in landscaping and architecture. Its durability and resistance to weathering further enhance its desirability as a building material.Moreover, migmatite plays a crucial role in understanding the processes of crustal evolution. By examining the mineral composition and structural features of migmatite, researchers can infer the thermal and pressure conditions that existed during its formation. This knowledge contributes to broader theories about plate tectonics and the dynamic processes shaping our planet.In conclusion, migmatite is more than just a rock; it is a testament to the complex processes that shape the Earth’s crust. Its unique characteristics, formation conditions, and aesthetic qualities make it a subject of interest for both geologists and rock enthusiasts alike. Understanding migmatite not only enriches our knowledge of geology but also connects us to the Earth's history and the forces that continue to shape our planet today.

岩石及其形成的研究是地质学中一个迷人的领域。在各种类型的岩石中，migmatite（混合岩）因其独特的特征和形成过程而脱颖而出。Migmatite是一种变质岩，表现出火成岩和沉积岩的特征，使其成为一种混合岩。这种双重特性源于岩石在地球地壳深处经历的强烈热量和压力条件。当母岩，通常是花岗岩或片麻岩，经历部分熔融时，就会产生固体和熔融材料的混合物。结果就是migmatite，它通常由于在这一过程中矿物的分离而显示出带状或条纹状的外观。理解migmatite对地质学家至关重要，因为它提供了该地区地质历史的见解。migmatite的存在可以表明该地区经历了显著的构造活动，例如大陆碰撞或俯冲事件。这些过程产生了形成migmatite所需的极端条件。因此，研究这些岩石可以帮助科学家重建过去的地质事件，并理解地壳的演变。Migmatite的形成通常发生在高等级变质环境中，温度超过650摄氏度。当原始岩石经历变质作用时，一些矿物开始熔化，而其他矿物则保持固态。这种部分熔融可以导致新矿物的形成，包括长石和石英，这些矿物在migmatite中很常见。岩石的固体部分可能保留其原始纹理，而熔融部分则可以流动并结晶成新形式，从而导致许多migmatite标本中看到的独特条带。除了其地质意义外，migmatite还具有美学价值。许多岩石收藏家和爱好者欣赏其独特的图案和颜色，这些颜色可以从浅灰色到深黑色，通常夹杂着白色或粉色的条纹。Migmatite的视觉吸引力使其成为园艺和建筑中装饰石材的热门选择。其耐用性和抗风化性进一步增强了其作为建筑材料的吸引力。此外，migmatite在理解地壳演化过程方面发挥着关键作用。通过检查migmatite的矿物组成和结构特征，研究人员可以推断出形成过程中存在的热量和压力条件。这些知识有助于更广泛的板块构造理论以及塑造我们星球的动态过程。总之，migmatite不仅仅是一种岩石；它是塑造地球地壳的复杂过程的证明。其独特的特征、形成条件和美学品质使其成为地质学家和岩石爱好者的兴趣对象。理解migmatite不仅丰富了我们对地质学的知识，还将我们与地球的历史以及继续塑造我们星球的力量联系在一起。