backbarrier facies

简明释义

1. 堤坝后相; 2. 障壁后相;

英英释义

例句

1.Researchers found that the backbarrier facies 后障碍相 contained diverse fossil assemblages, suggesting a rich ecological history.

研究人员发现，backbarrier facies 后障碍相中包含多样的化石组合，暗示着丰富的生态历史。

2.The study focused on the geological characteristics of the backbarrier facies 后障碍相 to understand past environmental conditions.

该研究集中于backbarrier facies 后障碍相的地质特征，以理解过去的环境条件。

3.The transition from lagoonal to backbarrier facies 后障碍相 indicates changes in sea level and sediment supply.

从潟湖到backbarrier facies 后障碍相的过渡表明海平面和沉积物供应的变化。

4.The sedimentary structures observed in the coastal region were classified as backbarrier facies 后障碍相, indicating a sheltered environment.

在沿海地区观察到的沉积结构被归类为backbarrier facies 后障碍相，这表明了一个庇护环境。

5.In this area, the backbarrier facies 后障碍相 is primarily composed of fine-grained sediments deposited in a low-energy environment.

在该地区，backbarrier facies 后障碍相主要由在低能量环境中沉积的细粒沉积物组成。

作文

The study of sedimentary environments is crucial for understanding the geological history of a region. Among various sedimentary facies, backbarrier facies play a significant role in reconstructing past marine and coastal environments. The term backbarrier facies refers to sedimentary deposits found in areas located behind a barrier island or lagoon system, typically characterized by low energy conditions and influenced by freshwater input from rivers or streams. These environments are often rich in organic material, which contributes to the formation of unique ecosystems.In coastal geology, barrier islands serve as protective structures that shield the mainland from the direct impact of ocean waves and storms. The regions behind these barriers often experience different sedimentation processes compared to the open ocean side. For instance, the backbarrier facies can include marshes, tidal flats, and estuarine environments, all of which are shaped by both terrestrial and marine influences. Understanding these facies is essential for reconstructing paleoenvironments and predicting how current coastal systems might respond to climate change.One of the key characteristics of backbarrier facies is their stratigraphic complexity. Sediments in these areas can vary widely in composition, texture, and color, reflecting the dynamic interplay between marine and freshwater systems. For example, during periods of sea-level rise, the sediments may exhibit a fining-upward sequence, where coarser materials are deposited at the base and finer sediments accumulate on top. This stratigraphy provides valuable insights into past environmental conditions and helps geologists to understand how these systems have evolved over time.Moreover, the biological aspect of backbarrier facies cannot be overlooked. These areas often support diverse plant and animal communities, including salt marsh vegetation and various species of fish and invertebrates. The presence of such organisms indicates a healthy ecosystem, which is critical for maintaining biodiversity and providing resources for local human populations. Therefore, studying backbarrier facies not only enhances our understanding of geological processes but also informs conservation efforts aimed at protecting these vital coastal habitats.In conclusion, the importance of backbarrier facies extends beyond their geological significance; they are integral to understanding coastal dynamics, ecological health, and the impacts of environmental change. As researchers continue to explore these unique sedimentary environments, they will undoubtedly uncover more about the intricate relationships between land and sea, shaping our approach to coastal management and preservation. By appreciating the role of backbarrier facies, we can better appreciate the complexities of our planet's coastal systems and the necessity of safeguarding them for future generations.

沉积环境的研究对于理解一个地区的地质历史至关重要。在各种沉积相中，背障相在重建过去的海洋和沿海环境中发挥着重要作用。术语背障相指的是位于障碍岛或潟湖系统后面的沉积物，通常特征为低能量条件，并受到河流或溪流淡水输入的影响。这些环境通常富含有机物质，有助于形成独特的生态系统。在沿海地质学中，障碍岛作为保护结构，能够保护大陆免受海浪和风暴的直接影响。与开放海洋一侧相比，这些障碍后面的区域通常经历不同的沉积过程。例如，背障相可以包括沼泽、潮滩和河口环境，所有这些都受到陆地和海洋影响的塑造。理解这些相对于重建古环境和预测当前沿海系统如何应对气候变化至关重要。背障相的一个关键特征是其地层复杂性。这些区域的沉积物在组成、纹理和颜色上可能有很大差异，反映了海洋和淡水系统之间动态的相互作用。例如，在海平面上升期间，沉积物可能表现出向上变细的序列，其中粗颗粒材料在底部沉积，而较细的沉积物则在顶部积累。这种地层提供了对过去环境条件的宝贵见解，并帮助地质学家理解这些系统如何随时间演变。此外，背障相的生物方面也不可忽视。这些区域通常支持多样的植物和动物群落，包括盐沼植物和各种鱼类及无脊椎动物。此类生物的存在表明生态系统健康，这对维持生物多样性和为当地人类群体提供资源至关重要。因此，研究背障相不仅增强了我们对地质过程的理解，还为保护这些重要沿海栖息地的努力提供了信息。总之，背障相的重要性超越了其地质意义；它们对于理解沿海动态、生态健康和环境变化的影响是不可或缺的。随着研究人员继续探索这些独特的沉积环境，他们无疑会揭示更多关于陆地与海洋之间复杂关系的知识，从而塑造我们对沿海管理和保护的看法。通过欣赏背障相的角色，我们可以更好地理解我们星球沿海系统的复杂性，以及保护这些系统以供后代使用的必要性。