compound cross-bedding

简明释义

复合交错层理;

英英释义

例句

1.The study of compound cross-bedding helps us understand ancient river systems and their dynamics.

对复合交错层理的研究有助于我们理解古代河流系统及其动态。

2.In the desert environment, compound cross-bedding can be observed in the sand dunes formed by wind action.

在沙漠环境中，可以观察到由风作用形成的沙丘中的复合交错层理。

3.The compound cross-bedding found in this rock formation suggests multiple phases of sediment transport.

在这个岩石构造中发现的复合交错层理表明多次沉积物运输阶段。

4.The geologist noted the presence of compound cross-bedding in the sedimentary layers, indicating a complex history of deposition.

地质学家注意到沉积层中存在复合交错层理，这表明沉积的历史复杂。

5.During the field trip, we examined the compound cross-bedding in the cliff face, revealing the geological processes at play.

在实地考察中，我们检查了悬崖表面的复合交错层理，揭示了正在进行的地质过程。

作文

Sedimentary structures are vital indicators of the processes that shaped our planet's geological history. Among these structures, compound cross-bedding represents a fascinating aspect of sedimentary deposits. This phenomenon occurs when layers of sediment are deposited at angles, often due to the influence of water or wind. Understanding compound cross-bedding is crucial for geologists, as it provides insights into ancient environments and the dynamics of sediment transport.To delve deeper into the concept of compound cross-bedding, it is essential to first comprehend what cross-bedding entails. Cross-bedding refers to the layering within sedimentary rocks that is inclined at an angle to the main bedding plane. This inclination typically results from the action of flowing water or wind, which can create ripples or dunes. When multiple sets of cross-beds are superimposed upon each other, we refer to this structure as compound cross-bedding. The formation of compound cross-bedding can be observed in various environments, including river deltas, desert dunes, and coastal settings. For instance, in a river environment, sediment may be transported and deposited by the current, leading to the creation of cross-beds. If the river's flow changes direction or speed, new layers may form over the existing ones, resulting in a compound structure. This layering not only reflects the changes in sediment supply and hydrodynamic conditions but also provides clues about past climatic conditions.Moreover, compound cross-bedding plays a significant role in the interpretation of geological history. By studying these structures, geologists can reconstruct past environments, determining whether a region was once a river, a beach, or a desert. The orientation and thickness of the cross-beds can reveal the energy of the environment at the time of deposition, offering valuable information for resource exploration, such as oil and gas reserves.In addition to its geological significance, compound cross-bedding also has implications for engineering and construction. Understanding the sedimentary structures can help engineers assess the stability of the ground for building foundations. Areas with pronounced compound cross-bedding may present challenges due to potential erosion or instability, making it essential to conduct thorough geological surveys before any construction projects.In conclusion, compound cross-bedding is a remarkable feature of sedimentary geology that encapsulates the dynamic processes of sediment transport and deposition. Its study not only enhances our understanding of Earth's history but also aids in practical applications in engineering and resource management. As we continue to explore and analyze these structures, we uncover the intricate stories written in the layers of sediment that make up our planet's surface. Recognizing the importance of compound cross-bedding will undoubtedly contribute to the broader field of geology and our appreciation of the natural world.

沉积结构是指示塑造我们星球地质历史过程的重要指标。在这些结构中，复合交错层理代表了沉积物堆积的一个迷人方面。这一现象发生在沉积物以角度沉积时，通常是由于水或风的影响。理解复合交错层理对地质学家至关重要，因为它提供了关于古代环境和沉积物运输动态的见解。要深入理解复合交错层理的概念，首先必须理解交错层理的含义。交错层理是指沉积岩内的分层，这些分层相对于主层面倾斜。这个倾斜通常是由流动的水或风的作用造成的，这可能会形成涟漪或沙丘。当多组交错层理重叠在一起时，我们称这种结构为复合交错层理。复合交错层理的形成可以在各种环境中观察到，包括河口三角洲、沙漠沙丘和海岸环境。例如，在河流环境中，沉积物可能被水流运输并沉积，从而形成交错层理。如果河流的流向或速度发生变化，新层可能会在现有层上形成，导致复合结构的出现。这种分层不仅反映了沉积物供应和水动力条件的变化，还提供了关于过去气候条件的线索。此外，复合交错层理在地质历史的解释中也起着重要作用。通过研究这些结构，地质学家可以重建过去的环境，确定一个地区曾经是河流、海滩还是沙漠。交错层理的方向和厚度可以揭示沉积时环境的能量，为资源勘探（如石油和天然气储藏）提供宝贵的信息。除了其地质意义外，复合交错层理在工程和建筑方面也具有重要意义。了解沉积结构可以帮助工程师评估地基的稳定性。在明显存在复合交错层理的区域，由于潜在的侵蚀或不稳定性，可能会带来挑战，因此在任何建筑项目之前进行彻底的地质勘查是至关重要的。总之，复合交错层理是沉积地质学的一个显著特征，体现了沉积物运输和沉积的动态过程。它的研究不仅增强了我们对地球历史的理解，还有助于工程和资源管理等实际应用。随着我们继续探索和分析这些结构，我们揭示了构成我们星球表面的沉积物层中记录的复杂故事。认识到复合交错层理的重要性无疑将有助于更广泛的地质学领域及我们对自然世界的欣赏。