diagenetic texture

简明释义

成岩结构;

英英释义

例句

1.Understanding the diagenetic texture is essential for predicting the reservoir quality in petroleum geology.

理解成岩构造对于预测石油地质中的储层质量至关重要。

2.In our research, we found that the diagenetic texture of the limestone was significantly altered due to the presence of mineral-rich fluids.

在我们的研究中，我们发现石灰岩的成岩构造因矿物质丰富的流体存在而显著改变。

3.The diagenetic texture of shale can indicate the temperature and pressure conditions during burial.

页岩的成岩构造可以指示埋藏期间的温度和压力条件。

4.Geologists often use thin sections to examine the diagenetic texture of sandstone, revealing important information about its formation.

地质学家常常使用薄片来检查砂岩的成岩构造，揭示其成因的重要信息。

5.The study of sedimentary rocks often involves analyzing their diagenetic texture, which refers to the physical and chemical changes that occur after sediment deposition.

对沉积岩的研究通常涉及分析它们的成岩构造，指的是沉积物沉积后发生的物理和化学变化。

作文

In the field of geology, understanding the processes that lead to the formation of sedimentary rocks is crucial. One important aspect of this study is the concept of diagenetic texture, which refers to the physical and chemical changes that occur in sediment after its initial deposition and before it becomes metamorphic rock. These changes can significantly influence the properties of the rock, including its porosity, permeability, and overall structure. The diagenetic texture is a result of various processes such as compaction, cementation, and the alteration of minerals due to chemical reactions. Compaction occurs when sediments are buried under additional layers, causing the grains to be pressed together more tightly. This process can reduce the pore spaces between grains, thereby affecting the rock's ability to hold fluids. The diagenetic texture can thus indicate the degree of compaction that has taken place, providing insights into the geological history of the area.Cementation is another critical process in the development of diagenetic texture. It involves the precipitation of minerals from groundwater, which fills the spaces between sediment grains and binds them together. Common cementing agents include silica, calcite, and iron oxides. The type and amount of cementation can vary widely, leading to different diagenetic textures that can be observed in rock samples. For instance, a rock with significant calcite cement might appear more cohesive and durable than one with minimal cementation.Moreover, chemical alterations can also play a vital role in shaping diagenetic texture. As sediments undergo diagenesis, they may experience mineralogical changes due to the interaction with fluids. For example, feldspar can alter to clay minerals through hydrolysis, which affects the overall composition and texture of the rock. This transformation can reveal important information about the environmental conditions during the rock's formation and subsequent history.The study of diagenetic texture is essential not only for academic purposes but also for practical applications in fields like petroleum geology and environmental science. Understanding how diagenetic processes affect rock properties can help geologists predict the location of oil and gas reserves, as well as assess groundwater quality. For instance, rocks with high porosity and permeability are often more favorable for hydrocarbon reservoirs, making the analysis of their diagenetic texture critical in exploration efforts.In conclusion, the term diagenetic texture encompasses a range of geological processes that transform sediments into sedimentary rocks. By studying these textures, geologists can gain valuable insights into the history of the Earth’s crust, the conditions under which the rocks formed, and their potential uses in natural resource management. As our understanding of these processes continues to evolve, the significance of diagenetic texture in geology will undoubtedly remain a key area of research and exploration.

在地质学领域，理解导致沉积岩形成的过程至关重要。这个研究中一个重要的方面是“成岩纹理”的概念，它指的是沉积物在初次沉积后到达变质岩之前所经历的物理和化学变化。这些变化可以显著影响岩石的性质，包括其孔隙度、渗透性和整体结构。“成岩纹理”是由于各种过程造成的，例如压实、胶结以及矿物因化学反应而发生的改变。压实发生在沉积物被额外层埋藏时，导致颗粒被更紧密地压在一起。这个过程可以减少颗粒之间的孔隙，从而影响岩石保持流体的能力。因此，“成岩纹理”可以指示出压实程度，为该地区的地质历史提供见解。胶结是形成“成岩纹理”的另一个关键过程。它涉及从地下水中沉淀矿物，这些矿物填充在沉积颗粒之间的空间并将它们结合在一起。常见的胶结剂包括二氧化硅、方解石和铁氧化物。胶结的类型和数量可能差异很大，导致不同的“成岩纹理”在岩石样本中被观察到。例如，具有显著方解石胶结的岩石可能看起来比胶结较少的岩石更加坚固耐用。此外，化学变化在塑造“成岩纹理”中也发挥着重要作用。随着沉积物经历成岩作用，它们可能因与流体的相互作用而发生矿物组成的变化。例如，长石通过水解转变为粘土矿物，这会影响岩石的整体组成和纹理。这种转变可以揭示岩石形成期间的环境条件及其后续历史的重要信息。对“成岩纹理”的研究不仅对学术目的至关重要，而且在石油地质学和环境科学等领域也有实际应用。了解成岩过程如何影响岩石性质可以帮助地质学家预测石油和天然气储藏的位置，以及评估地下水质量。例如，具有高孔隙度和渗透性的岩石通常更适合成为碳氢化合物储层，因此分析它们的“成岩纹理”在勘探工作中至关重要。总之，“成岩纹理”一词涵盖了一系列将沉积物转化为沉积岩的地质过程。通过研究这些纹理，地质学家可以获得关于地球地壳历史、岩石形成条件及其在自然资源管理中的潜在用途的宝贵见解。随着我们对这些过程理解的不断发展，“成岩纹理”在地质学中的重要性无疑将继续成为研究和探索的关键领域。