metasomatism

简明释义

英[ˌmetəˈsəʊməˌtɪzəm]美[ˌmetəˈsoʊməˌtɪzəm]

n. （地理）交代作用，交代变质（作用）

英英释义

单词用法

同义词

反义词

例句

1.Gold mineralization has a special relationship to K-metasomatism.

许多矿床包括金矿床和钾交代关系密切。

2.Mantle metasomatism is actually a result of interaction between mantle fluids and wall rocks. Study on their transport manner is beneficial to understanding mantle metasomatism.

地幔交代作用实质上是地幔流体与围岩的作用结果，对地幔流体迁移方式的研究有助于对地幔交代现象的理解。

3.Teacher metasomatism and action began, there were so many garbage on the ground!

老师交代了一下，行动就开始了，地上的垃圾可真多呀！

4.Mantle metasomatism is actually a result of interaction between mantle fluids and wall rocks. Study on their transport manner is beneficial to understanding mantle metasomatism.

地幔交代作用实质上是地幔流体与围岩的作用结果，对地幔流体迁移方式的研究有助于对地幔交代现象的理解。

5.The wide spatial and temporal distribution of alkaline magmatism shows that mantle metasomatism is a widespread, long-lived and continuous geological process.

碱性岩浆作用广泛的时空分布表明，地幔交代作用是广泛的，并且是长期的一种地质作用。

6.Palingenetic zircon produced during the process of metasomatism can be divided into two generations: early and late.

变质交代过程中产生的再生锆石又可分早、晚两个世代。

7.This paper reported the result of trace dement composition and distribution at micro area of melt from mantle metasomatism of peridotite in the Shuanggou ophiolite.

用质子探针技术对双沟地幔交代熔融物的微区微量元素进行了测定。

8.More granitic rocks are produced in the late-stage of metasomatism, which could be remelt, and each successive melt could be solidified and modified by metasomatic fluids.

在交代作用后期，更多的花岗岩形成，这些花岗岩可再熔化，熔化后又会凝固并被交代流体作用。

9.Serpentine metasomatism often formed with pyroxene silk silk stone "".

蛇纹石交代辉石常形成具丝绢光泽的“绢石”。

10.The process of metasomatism can significantly alter the mineral composition of rocks.

变质作用可以显著改变岩石的矿物成分。

11.Understanding metasomatism is crucial for predicting the behavior of certain minerals under pressure.

理解变质作用对于预测某些矿物在压力下的行为至关重要。

12.The metasomatism of limestone can produce marble through high-temperature processes.

变质作用可以通过高温过程将石灰石转变为大理石。

13.In volcanic regions, metasomatism often leads to the formation of new mineral deposits.

在火山地区，变质作用通常导致新矿床的形成。

14.Geologists study metasomatism to understand how fluids interact with solid rock.

地质学家研究变质作用以了解流体如何与固体岩石相互作用。

作文

Metasomatism is a geological process that involves the chemical alteration of a rock by fluids, resulting in significant changes in its mineral composition. This phenomenon occurs when hot, mineral-rich fluids circulate through rocks, leading to the replacement of existing minerals with new ones. The term 'metasomatism' comes from the Greek words 'meta,' meaning change, and 'soma,' meaning body. In essence, it refers to the transformation of one type of rock into another through the introduction of new materials. Understanding metasomatism is crucial for geologists as it provides insights into the history and evolution of the Earth's crust.The process of metasomatism can be observed in various geological settings, particularly in areas where tectonic activity is prevalent. For instance, when magma intrudes into surrounding rocks, the heat and pressure can cause the fluid to interact with the host rock, facilitating the exchange of elements. This interaction can lead to the formation of economically valuable minerals such as gold, silver, and copper, making metasomatism an important process in ore formation.One of the most significant examples of metasomatism is found in the formation of skarns, which are metamorphic rocks that form at the contact between igneous intrusions and carbonate rocks. During this process, the hot fluids released from the cooling magma react with the limestone, resulting in the formation of new minerals such as garnet and pyroxene. This type of metasomatic alteration not only changes the mineralogy of the original rock but also enhances its economic value, as skarns can be rich in metals.Moreover, metasomatism plays a vital role in the rock cycle by contributing to the recycling of materials within the Earth's crust. As rocks undergo weathering and erosion, the released minerals can be transported and deposited elsewhere, where they may undergo further alteration. This continuous process of transformation highlights the dynamic nature of the Earth's geology and the importance of metasomatism in shaping the landscape.In addition to its geological significance, metasomatism also has implications for understanding the conditions under which certain minerals form. By studying the specific alterations that occur during this process, scientists can infer the temperature, pressure, and fluid composition present during the rock's history. This information is invaluable for reconstructing past geological environments and can aid in predicting the location of mineral deposits.In conclusion, metasomatism is a fascinating geological process that illustrates the complexity of the Earth's crust and the intricate interactions between rocks and fluids. By examining the changes brought about by metasomatism, geologists can gain a deeper understanding of the Earth's history, the formation of valuable mineral resources, and the ongoing processes that shape our planet. As research continues to uncover the intricacies of metasomatism, its relevance in both economic geology and the broader field of Earth sciences will undoubtedly grow, highlighting the importance of this transformative process in the study of geology.

变质作用是一个地质过程，涉及通过流体对岩石的化学改变，从而导致其矿物成分的显著变化。当热的、富含矿物的流体在岩石中循环时，这一现象就会发生，导致现有矿物被新矿物替代。术语“变质作用”源于希腊语中的“meta”，意为变化，以及“soma”，意为身体。本质上，它指的是通过引入新材料将一种类型的岩石转变为另一种类型。理解变质作用对于地质学家至关重要，因为它提供了关于地球地壳历史和演变的见解。变质作用的过程可以在各种地质环境中观察到，特别是在构造活动频繁的地区。例如，当岩浆侵入周围岩石时，热量和压力可能导致流体与宿主岩石相互作用，促进元素的交换。这种相互作用可以导致形成经济价值较高的矿物，如金、银和铜，使变质作用成为矿石形成中的重要过程。变质作用最显著的例子之一可以在角岩的形成中找到，角岩是一种在火成岩与碳酸盐岩接触处形成的变质岩。在这一过程中，来自冷却岩浆的热流体与石灰岩反应，导致新矿物如石榴石和辉石的形成。这种类型的变质改造不仅改变了原始岩石的矿物组成，还提高了其经济价值，因为角岩可能富含金属。此外，变质作用在岩石循环中发挥着重要作用，通过促进地球地壳内材料的回收利用。当岩石经历风化和侵蚀时，释放的矿物可以被运输并在其他地方沉积，在那里它们可能经历进一步的改造。这一连续的转变过程突显了地球地质的动态特性以及变质作用在塑造地貌中的重要性。除了其地质意义外，变质作用还对理解某些矿物形成的条件具有重要意义。通过研究在这一过程中发生的具体变化，科学家可以推断出岩石历史上的温度、压力和流体成分。这些信息对重建过去的地质环境至关重要，并且可以帮助预测矿藏的位置。总之，变质作用是一个迷人的地质过程，展示了地球地壳的复杂性以及岩石与流体之间复杂的相互作用。通过检查变质作用所带来的变化，地质学家可以更深入地理解地球的历史、有价值的矿产资源的形成以及塑造我们星球的持续过程。随着研究继续揭示变质作用的复杂性，其在经济地质学和更广泛的地球科学领域的重要性无疑会增加，突显了这一转变过程在地质研究中的重要性。