continental unconformity

简明释义

大陆不整合;

英英释义

例句

1.Understanding continental unconformity helps geologists reconstruct past environments and tectonic activities.

理解大陆不整合面有助于地质学家重建过去的环境和构造活动。

2.In the Grand Canyon, we can observe a significant continental unconformity that reveals millions of years of geological history.

在大峡谷中，我们可以观察到一个显著的大陆不整合面，它揭示了数百万年的地质历史。

3.The presence of a continental unconformity often suggests a significant gap in the geological record.

一个大陆不整合面的存在通常暗示着地质记录中的一个重大间隙。

4.The geologist explained that a continental unconformity is formed when sedimentary layers are deposited on top of older, eroded rocks.

地质学家解释说，大陆不整合面是在沉积层覆盖在更古老的侵蚀岩石之上时形成的。

5.During our field trip, we studied a continental unconformity that indicated a period of uplift and erosion.

在我们的实地考察中，我们研究了一个大陆不整合面，这表明一个抬升和侵蚀的时期。

作文

Understanding geological formations can be a fascinating yet complex endeavor. Among various geological concepts, the term continental unconformity (大陆不整合面) stands out as a significant feature that helps us comprehend the Earth's history. A continental unconformity refers to a surface of contact between two groups of unconformable strata. This phenomenon typically occurs when there is a significant gap in the geological record, indicating a period during which no sediment was deposited or existing sediments were eroded away. Essentially, it represents a break in the geological timeline, where older rocks are juxtaposed against younger ones without any intervening layers.The formation of a continental unconformity can result from various geological processes, including tectonic activity, erosion, and changes in sea level. For instance, when tectonic plates shift, they can uplift land, exposing previously buried rock layers. Over time, these exposed layers may undergo weathering and erosion, leading to the loss of sedimentary deposits that would normally accumulate over time. When conditions change again, and new sediments begin to settle, a continental unconformity is formed, marking a clear distinction between the old and new geological records.One of the most famous examples of a continental unconformity is found at the Grand Canyon in the United States. The canyon showcases a remarkable sequence of rock layers, where ancient Vishnu Schist, dating back nearly two billion years, lies beneath much younger sedimentary layers. This striking contrast illustrates the concept of unconformity beautifully, as it highlights the extensive period during which the region experienced erosion before new sediments were deposited. Geologists study such formations to gain insights into the Earth's past environments, climatic changes, and the processes that have shaped our planet.The significance of understanding continental unconformity extends beyond mere academic interest; it has practical implications as well. In fields like petroleum geology, identifying unconformities can help locate potential oil and gas reservoirs. These geological features often indicate areas where hydrocarbons may have migrated and accumulated over time. Thus, knowledge of continental unconformity is crucial for resource exploration and management.In conclusion, the concept of continental unconformity is essential for geologists and anyone interested in Earth sciences. It serves as a reminder of the dynamic nature of our planet, where geological processes continually reshape the landscape. By studying these unconformities, we not only learn about the Earth's history but also enhance our ability to predict future geological events. Understanding continental unconformity ultimately enriches our knowledge of the world around us and underscores the importance of geological research in unraveling the mysteries of our planet's past.

理解地质构造可能是一项迷人而复杂的工作。在各种地质概念中，术语continental unconformity（大陆不整合面）作为一个重要特征，帮助我们理解地球的历史。continental unconformity指的是两组不整合层之间的接触面。这种现象通常发生在地质记录中存在显著间隙的情况下，表明在这一期间没有沉积物沉积，或者现有沉积物被侵蚀掉。实质上，它代表了地质时间线中的一个断裂，老岩石与年轻岩石之间没有任何中介层。continental unconformity的形成可以由多种地质过程引起，包括构造活动、侵蚀和海平面变化。例如，当构造板块移动时，它们可能会抬升土地，暴露出先前埋藏的岩层。随着时间的推移，这些暴露的层可能会经历风化和侵蚀，导致本应随着时间积累的沉积物的丧失。当条件再次发生变化，新沉积物开始沉降时，就形成了continental unconformity，标志着旧地质记录与新地质记录之间的明显区别。美国大峡谷是continental unconformity最著名的例子之一。大峡谷展示了一系列显著的岩层，其中古老的维什努片麻岩，约有近20亿年的历史，位于更年轻的沉积层之下。这种鲜明的对比美丽地展示了不整合的概念，因为它突出了该地区在经历侵蚀之前的漫长时期。地质学家研究这样的构造，以深入了解地球的过去环境、气候变化以及塑造我们星球的过程。理解continental unconformity的重要性超越了学术兴趣，它也具有实际意义。在石油地质等领域，识别不整合面可以帮助寻找潜在的石油和天然气储藏。这些地质特征通常指示了碳氢化合物可能随时间迁移和积累的区域。因此，了解continental unconformity对于资源勘探和管理至关重要。总之，continental unconformity的概念对于地质学家和任何对地球科学感兴趣的人来说都是必不可少的。它提醒我们地球的动态性质，地质过程不断重塑着景观。通过研究这些不整合，我们不仅了解地球的历史，还增强了预测未来地质事件的能力。理解continental unconformity最终丰富了我们对周围世界的知识，并强调了地质研究在揭示我们星球过去奥秘中的重要性。