key bed

简明释义

键座键槽

英英释义

例句

1.The geologist identified the key bed as a crucial layer for understanding the area's sedimentary history.

地质学家将关键层确定为理解该地区沉积历史的关键层。

2.Researchers often focus on the key bed to study past climate changes.

研究人员通常关注关键层以研究过去的气候变化。

3.During the excavation, they discovered a key bed rich in fossils, which helped date the site.

在挖掘过程中，他们发现了一个富含化石的关键层，这有助于确定该地点的年代。

4.In the construction project, the engineers found a key bed that provided stability to the foundation.

在建设项目中，工程师发现了一个关键床，为基础提供了稳定性。

5.The key bed of clay was essential for retaining water in the agricultural fields.

这层关键土层对保持农业田地的水分至关重要。

作文

In the field of geology, the term key bed refers to a specific layer of sedimentary rock that is particularly useful for correlating the age of different geological formations. This layer often contains distinctive fossils or mineral compositions that allow geologists to identify and date other layers of rock in the vicinity. Understanding the concept of a key bed is essential for reconstructing the geological history of an area, as it serves as a reference point for dating and correlating other strata. For example, during a geological survey, scientists may come across a key bed that contains unique trilobite fossils. By identifying this layer, they can determine the relative ages of surrounding rocks, which may not have as clear indicators of their age. This process is crucial when studying sedimentary basins, where multiple layers of rock have been deposited over millions of years. The identification of a key bed allows researchers to piece together the timeline of geological events that have shaped the Earth’s surface. Moreover, key beds are not only important for dating purposes but also play a significant role in understanding past environmental conditions. For instance, a key bed that shows signs of ancient volcanic activity can indicate a period of significant geological upheaval, providing insights into the climatic and ecological changes that occurred at that time. By analyzing the composition of these beds, scientists can infer information about the temperature, water chemistry, and even the types of organisms that thrived in those ancient environments. In addition to their scientific importance, key beds can also have practical implications. For example, in the field of natural resource exploration, identifying a key bed can help geologists locate valuable minerals or fossil fuels. When a key bed is found to be associated with oil deposits, it can guide drilling operations and increase the efficiency of resource extraction. Thus, the study of key beds is not only academically significant but also economically beneficial. In conclusion, the concept of a key bed is a fundamental aspect of geological studies. It serves as a critical reference point for dating and correlating rock layers, provides insights into past environments, and has practical applications in resource exploration. As our understanding of geology continues to evolve, the significance of key beds will undoubtedly remain a vital component of our efforts to decipher the Earth's complex history.

在地质学领域，术语关键层指的是一层特定的沉积岩，这一层对关联不同地质构造的年龄特别有用。这一层通常包含独特的化石或矿物成分，使地质学家能够识别和测定周围岩层的年龄。理解关键层的概念对于重建一个地区的地质历史至关重要，因为它作为一个参考点，用于测定和关联其他地层。例如，在一次地质调查中，科学家可能会发现一层含有独特三叶虫化石的关键层。通过识别这一层，他们可以确定周围岩石的相对年龄，而这些岩石可能没有明确的年龄指示。这一过程在研究沉积盆地时至关重要，因为在数百万年间，多个岩层已被沉积。识别出关键层使研究人员能够拼凑出塑造地球表面的地质事件的时间线。此外，关键层不仅对测定目的重要，还在理解过去环境条件方面发挥着重要作用。例如，显示古代火山活动迹象的关键层可以表明重大地质动荡的时期，为我们提供关于当时气候和生态变化的见解。通过分析这些层的成分，科学家可以推断出关于温度、水化学甚至古代生物种类的信息。除了科学重要性外，关键层还可能具有实际意义。例如，在自然资源勘探领域，识别出关键层可以帮助地质学家定位有价值的矿物或化石燃料。当发现某个关键层与油气沉积有关时，它可以指导钻探操作，提高资源开采的效率。因此，对关键层的研究不仅在学术上具有重要意义，而且在经济上也具有益处。总之，关键层的概念是地质学研究的基本方面。它作为测定和关联岩层的关键参考点，提供了对过去环境的见解，并在资源勘探中具有实际应用。随着我们对地质学理解的不断发展，关键层的重要性无疑将继续成为我们解读地球复杂历史努力的重要组成部分。