aqueous cross lamination

简明释义

1. 水成交错纹层; 2. 水成交错纹理;

英英释义

例句

1.The geologist observed the aqueous cross lamination in the sedimentary rock, which indicated a history of water flow.

地质学家观察到沉积岩中的水相交错层理，这表明了水流的历史。

2.The presence of aqueous cross lamination suggests that the area was once underwater.

存在水相交错层理表明该地区曾经在水下。

3.During the field trip, students learned how to identify aqueous cross lamination in various rock formations.

在实地考察中，学生们学习了如何在各种岩石构造中识别水相交错层理。

4.In the lab, we studied the aqueous cross lamination patterns to understand past river dynamics.

在实验室，我们研究了水相交错层理的模式，以了解过去河流的动态。

5.The core sample revealed distinct layers of aqueous cross lamination, indicating fluctuating water levels.

岩心样本显示出明显的水相交错层理，指示水位波动。

作文

In the study of sedimentary geology, various features and structures can provide significant insights into past environmental conditions. One such feature is aqueous cross lamination, which refers to a specific layering pattern formed in sedimentary deposits due to the action of water. This process typically occurs in environments such as rivers, lakes, and marine settings where sediments are transported and deposited by flowing water. Understanding aqueous cross lamination is crucial for geologists as it helps reconstruct ancient landscapes and interpret sedimentary processes.The formation of aqueous cross lamination often involves the interaction between sediment-laden water and the substrate. As water flows over a surface, it has the capacity to carry various sizes of sediment particles. When the flow velocity decreases, larger particles settle first, followed by finer materials. This results in a layered structure characterized by inclined or cross-bedding, which is a hallmark of aqueous cross lamination. The angles and orientation of these layers can vary, reflecting changes in flow dynamics and sediment supply.One of the key aspects of aqueous cross lamination is its ability to indicate the direction of sediment transport. By analyzing the orientation of the cross-laminated layers, geologists can infer the prevailing current direction at the time of deposition. This information is invaluable for reconstructing past environments, especially in understanding deltaic systems, river channels, and coastal deposits.Moreover, aqueous cross lamination can also provide clues about the energy levels of the depositional environment. For instance, well-defined, closely spaced laminae may suggest a high-energy setting where rapid deposition occurs, while more diffuse and widely spaced layers may indicate a low-energy environment with slower sedimentation rates. These variations help geologists categorize sedimentary environments and understand the processes that shaped them.In addition to its geological significance, aqueous cross lamination has implications for other fields, such as paleoclimatology and paleoecology. By examining the characteristics of cross-laminated sediments, scientists can gain insights into past climate conditions and ecological systems. For example, variations in the composition and thickness of laminae may correlate with climatic changes, allowing researchers to construct detailed records of environmental shifts over geological time.In conclusion, the concept of aqueous cross lamination plays a vital role in sedimentary geology, offering valuable information about past environments, sediment transport mechanisms, and climatic conditions. Its study not only enhances our understanding of geological processes but also aids in reconstructing the history of Earth’s surface. As research continues to evolve, the significance of aqueous cross lamination will undoubtedly remain a focal point for geologists and earth scientists alike.

在沉积地质学的研究中，各种特征和结构可以提供对过去环境条件的重要见解。其中一个特征是水相交错层理，指的是由于水的作用而形成的特定层理模式。这一过程通常发生在河流、湖泊和海洋等环境中，其中沉积物被流动的水运输和沉积。理解水相交错层理对于地质学家至关重要，因为它有助于重建古代景观并解释沉积过程。水相交错层理的形成通常涉及沉积物携带水与基底之间的相互作用。当水在表面上流动时，它能够携带各种大小的沉积颗粒。当流速降低时，较大的颗粒首先沉降，然后是较细的材料。这导致了一种特征化的层状结构，其特征是倾斜或交错的层理，这是水相交错层理的标志。层理的角度和方向可能会有所不同，反映出流动动态和沉积供应的变化。水相交错层理的一个关键方面是其指示沉积物运输方向的能力。通过分析交错层理的方向，地质学家可以推断出沉积时的主流方向。这些信息对于重建过去环境尤其重要，特别是在理解三角洲系统、河道和沿海沉积方面。此外，水相交错层理还可以提供有关沉积环境能量水平的线索。例如，定义良好、间隔紧密的层理可能表明高能环境，在这种环境中快速沉积，而更模糊且间隔较大的层可能表明低能环境，沉积速度较慢。这些变化帮助地质学家对沉积环境进行分类，并理解塑造它们的过程。除了其地质意义外，水相交错层理在古气候学和古生态学等其他领域也具有重要意义。通过检查交错层理沉积物的特征，科学家可以获得对过去气候条件和生态系统的见解。例如，层理的组成和厚度的变化可能与气候变化相关联，使研究人员能够构建详细的地质时间环境变化记录。总之，水相交错层理的概念在沉积地质学中发挥着至关重要的作用，提供了关于过去环境、沉积物运输机制和气候条件的宝贵信息。它的研究不仅增强了我们对地质过程的理解，还帮助重建地球表面的历史。随着研究的不断发展，水相交错层理的重要性无疑将继续成为地质学家和地球科学家关注的焦点。