craton

简明释义

英[ˈkreɪtən]美[ˈkreɪˌtɑːn]

n. [地质] 克拉通；[地质] 稳定地块

英英释义

单词用法

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例句

1.Neoproterozoic magmatic rocks, especially granitic intrusions, are widespread in the western margin of the Yangtze craton.

扬子地块西缘新元古代岩浆活动非常强烈，花岗岩广布。

2.The Ordos basin located in the west part of the North China craton is one of the large petroleum-bearing basins.

鄂尔多斯盆地位于华北克拉通西部，是中国大型含油气盆地之一。

3.The early crustal evolution of North China craton can be well correlated with other continents, and its tectonic position within the Precambrian Supercontinet should be reconstructed.

华北克拉通区是世界大陆克拉通地壳的组成部分，与世界各大陆克拉通演化有很好的可对比性，在前寒武纪超级大陆重建中有一定位置。

4.Sharp geochemical change belt reflects the geochemical characteristics of block margin of craton and so on, which reveals the boundary location more effective than geological survey.

地球化学急变带反映了克拉通边缘的地球化学特征，它可比地质观察更有效地揭示克拉通边界的位置。

5.A craton includes a crystalline basement of commonly Precambrian rock called a shield, and a platform in which flat-lying or nearly flat-lying sediments or sedimentary rock surround the shield.

克拉通包含通常为前寒武纪岩石的结晶基底，即地盾，也包含围绕地盾的并在其上有平卧或近于平卧的沉积物或沉积岩层的地台。

6.The ancient formation age of continental lithospheric mantle is coupling with the age of overlying craton crust.

大陆岩石圈地幔的古老形成年龄与上覆地壳克拉通的古老稳定年龄相耦合。

7.Scientists study the age and composition of the craton to understand the history of continental formation.

科学家研究克拉通的年龄和成分，以了解大陆形成的历史。

8.The ancient geological formations in this region are primarily composed of a stable block of the Earth's crust known as a craton.

该地区的古老地质构造主要由一个被称为克拉通的稳定地壳块组成。

9.Mineral deposits are often found near the edges of a craton, making them valuable for mining.

矿物沉积通常在克拉通的边缘附近发现，使其对采矿具有重要价值。

10.Geologists often refer to the stability of a craton when assessing earthquake risks in an area.

地质学家在评估某个地区的地震风险时，常常提到克拉通的稳定性。

11.The Australian craton is one of the oldest landmasses on Earth, dating back billions of years.

澳大利亚克拉通是地球上最古老的陆地之一，已有数十亿年的历史。

作文

The Earth's crust is a fascinating and complex structure that has evolved over billions of years. One of the most significant components of this structure is the craton, which refers to the stable, ancient part of the continental crust. These regions are typically found in the interior of continents and are characterized by their geological stability and resilience against tectonic forces. Understanding cratons is essential for geologists and researchers who study the history of our planet and the processes that have shaped it.Cratons are primarily composed of metamorphic and igneous rocks, which have been subjected to intense heat and pressure over geological time. This process has led to the formation of some of the oldest rocks on Earth, with ages dating back to more than 3 billion years. The stability of cratons makes them invaluable in the study of Earth's early history, as they provide insights into the conditions and processes that prevailed during the formation of the planet.In addition to their historical significance, cratons play a crucial role in the geology of modern continents. They serve as the foundation upon which younger sedimentary rocks are deposited, creating a diverse range of geological formations. For example, the Canadian Shield, which is one of the largest cratons in the world, not only provides a glimpse into Earth's past but also influences the landscape and natural resources of Canada.Moreover, cratons are often associated with valuable mineral deposits, including gold, diamonds, and other precious metals. The geological stability of these regions allows for the accumulation of minerals over time, making them prime locations for mining activities. As a result, understanding the distribution and characteristics of cratons can have significant economic implications.Despite their stability, cratons are not immune to geological changes. Erosion, volcanic activity, and tectonic movements can all impact these ancient landforms. However, the rate of change is generally much slower compared to more active geological regions. This slow pace allows scientists to study the long-term effects of geological processes on the Earth's crust.Furthermore, the study of cratons extends beyond geology; it also intersects with other scientific disciplines, such as paleontology and climatology. By examining the rock formations within cratons, researchers can uncover fossils and evidence of ancient life, providing clues about the evolution of species and ecosystems over millions of years. Additionally, the geological history recorded in cratons can inform us about past climate conditions and how they have changed over time.In conclusion, cratons are vital components of the Earth's crust that offer invaluable insights into our planet's history, geology, and resources. Their ancient and stable nature makes them a focal point for scientific research, helping us understand not only the processes that have shaped the Earth but also the potential resources that lie within. As we continue to explore and study these remarkable geological features, we gain a deeper appreciation for the complexity and beauty of our planet's structure and history.

地壳是一个迷人而复杂的结构，经过数十亿年的演变。其中一个重要组成部分是克拉通，指的是大陆地壳的稳定、古老部分。这些区域通常位于大陆内部，具有地质稳定性和抵御构造力量的能力。理解克拉通对研究我们星球历史和塑造过程的地质学家和研究人员至关重要。克拉通主要由变质岩和火成岩组成，这些岩石在地质时间中经历了剧烈的热和压力。这一过程导致形成了一些地球上最古老的岩石，其年龄可追溯到超过30亿年前。克拉通的稳定性使其在研究地球早期历史方面具有无价的价值，因为它们提供了关于地球形成时的条件和过程的见解。除了历史意义外，克拉通在现代大陆的地质学中也发挥着关键作用。它们作为年轻沉积岩沉积的基础，创造出多样化的地质形态。例如，加拿大地盾是世界上最大的克拉通之一，不仅提供了地球过去的视角，还影响了加拿大的地貌和自然资源。此外，克拉通通常与有价值的矿物储藏有关，包括黄金、钻石和其他贵金属。这些地区的地质稳定性使得矿物能够随着时间的推移而积累，使它们成为采矿活动的优选地点。因此，理解克拉通的分布和特征可能具有重要的经济意义。尽管克拉通相对稳定，但它们并不免受地质变化的影响。侵蚀、火山活动和构造运动都可能影响这些古老的地貌。然而，与更活跃的地质区域相比，变化的速度通常要慢得多。这种缓慢的步伐使科学家能够研究地质过程对地壳的长期影响。此外，克拉通的研究不仅限于地质学；它还与古生物学和气候学等其他科学学科交叉。通过检查克拉通内的岩石形成，研究人员可以发现化石和古代生命的证据，为数百万年来物种和生态系统的演变提供线索。此外，克拉通中记录的地质历史可以告知我们过去气候条件以及它们如何随时间变化。总之，克拉通是地壳的重要组成部分，提供了对我们星球历史、地质和资源的无价见解。它们古老而稳定的特性使其成为科学研究的焦点，帮助我们了解塑造地球的过程以及潜在的资源。随着我们继续探索和研究这些杰出的地质特征，我们对我们星球结构和历史的复杂性和美丽的理解会更加深入。