compositionally immature sediment

简明释义

1. 成分上未成熟的沉积物; 2. 组分未成熟沉积物;

英英释义

例句

1.The presence of compositionally immature sediment in the core samples suggested that the area has not yet undergone significant geological changes.

核心样本中存在成分不成熟的沉积物表明该地区尚未经历显著的地质变化。

2.In coastal areas, compositionally immature sediment can be a sign of recent erosion and sedimentation activity.

在沿海地区，成分不成熟的沉积物可能是近期侵蚀和沉积活动的标志。

3.The study revealed that the river delta is primarily composed of compositionally immature sediment, which indicates a young geological age.

研究表明，河口三角洲主要由成分不成熟的沉积物组成，这表明其地质年龄较年轻。

4.Geologists often analyze compositionally immature sediment to understand the processes of sediment transport and deposition.

地质学家经常分析成分不成熟的沉积物以了解沉积物的运输和沉积过程。

5.Researchers found that compositionally immature sediment can provide insights into ancient environmental conditions.

研究人员发现，成分不成熟的沉积物可以提供对古代环境条件的见解。

作文

In the study of geology, understanding sediment types is crucial for interpreting past environments and predicting future geological changes. One important category of sediment is known as compositionally immature sediment. This term refers to sediments that have not undergone significant weathering or diagenesis, meaning they retain a high proportion of their original minerals and rock fragments. These sediments typically contain a mix of various materials, including quartz, feldspar, and lithic fragments, which reflect their source rocks. The presence of compositionally immature sediment in a geological formation can provide valuable insights into the processes that shaped the area over time.To elaborate, compositionally immature sediment is often found in environments where rapid erosion occurs, such as riverbeds or coastal regions. In these settings, sediments are transported quickly and deposited before they have a chance to break down into more stable forms. This characteristic makes them particularly interesting to geologists who study sediment transport and deposition.For example, when examining a river system, the sediments at the mouth of the river may be classified as compositionally immature sediment, as they are freshly eroded from upstream sources. These sediments can tell us about the geology of the upstream areas, indicating what types of rocks are prevalent there. Moreover, the grain size and mineral composition can also reveal information about the energy of the transporting medium; larger grains suggest a higher energy environment, while smaller grains indicate lower energy conditions.In contrast, sediments that have been subjected to prolonged weathering and sorting will be termed 'compositionally mature.' These mature sediments typically exhibit a higher degree of uniformity in size and composition, often dominated by stable minerals like quartz. The distinction between immature and mature sediments is essential for geologists, as it helps in reconstructing past environments and understanding sedimentary processes.The study of compositionally immature sediment is not only limited to terrestrial environments. Marine settings also experience similar processes. For instance, in deltaic systems, sediments can accumulate rapidly due to the influx of materials from rivers. Here, compositionally immature sediment can provide clues about the sedimentary dynamics of the delta, including how landforms evolve over time and how ecosystems respond to sediment supply changes.Furthermore, the examination of these sediments can have implications for natural resource exploration. For example, certain minerals associated with compositionally immature sediment may indicate the presence of valuable resources like oil or gas. Understanding the composition and distribution of these sediments can guide exploration efforts and inform environmental management decisions.In conclusion, compositionally immature sediment plays a vital role in the field of geology. Its unique characteristics provide insights into sedimentary processes, past environments, and potential resource locations. By studying these sediments, geologists can piece together the history of an area and predict how it may change in the future. Thus, recognizing and understanding the significance of compositionally immature sediment is essential for anyone interested in the Earth's geological processes.

在地质学研究中，理解沉积物类型对于解释过去的环境和预测未来的地质变化至关重要。其中一个重要的沉积物类别被称为成分未成熟沉积物。这个术语指的是那些没有经历显著风化或成岩作用的沉积物，这意味着它们保留了较高比例的原始矿物和岩石碎片。这些沉积物通常包含多种材料的混合，包括石英、长石和岩屑碎片，反映了它们的源岩。在地质形成中存在成分未成熟沉积物可以提供对塑造该地区过程的宝贵见解。进一步阐述，成分未成熟沉积物通常出现在快速侵蚀发生的环境中，例如河床或沿海地区。在这些环境中，沉积物被迅速运输并沉积，在它们有机会分解成更稳定的形式之前就已被沉积。这一特征使得它们对研究沉积物运输和沉积的地质学家特别有趣。例如，当检查一个河流系统时，河流入海口的沉积物可能被归类为成分未成熟沉积物，因为它们是从上游源头新近侵蚀而来的。这些沉积物可以告诉我们上游地区的地质情况，表明那里的岩石类型。此外，颗粒大小和矿物组成也可以揭示运输介质的能量信息；较大的颗粒表明较高能量环境，而较小的颗粒则表示较低能量条件。相反，经历了长期风化和筛选的沉积物将被称为“成分成熟”。这些成熟的沉积物通常在大小和成分上表现出更高的均匀性，通常以稳定的矿物如石英为主。未成熟和成熟沉积物之间的区别对于地质学家来说至关重要，因为它有助于重建过去的环境并理解沉积过程。对成分未成熟沉积物的研究不仅限于陆地环境。海洋环境也经历类似的过程。例如，在三角洲系统中，由于河流物质的涌入，沉积物可以迅速积累。在这里，成分未成熟沉积物可以提供关于三角洲沉积动态的线索，包括地貌如何随时间演变以及生态系统如何响应沉积供应变化。此外，对这些沉积物的检查可能对自然资源勘探产生影响。例如，与成分未成熟沉积物相关的某些矿物可能表明存在有价值的资源，如石油或天然气。了解这些沉积物的组成和分布可以指导勘探工作，并为环境管理决策提供信息。总之，成分未成熟沉积物在地质学领域中扮演着至关重要的角色。其独特特征为沉积过程、过去环境和潜在资源位置提供了见解。通过研究这些沉积物，地质学家可以拼凑出一个地区的历史，并预测其未来可能发生的变化。因此，认识和理解成分未成熟沉积物的重要性对于任何对地球地质过程感兴趣的人来说都是必不可少的。