diagenesis

简明释义

英[ˌdaɪəˈdʒenɪsɪs]美[ˌdaɪəˈdʒenɪsɪs]

n. [地质] 成岩作用，岩化作用

英英释义

单词用法

同义词

反义词

例句

1.The porosity in reef rocks is effected by various diagenesis stages.

在不同成岩作用阶段，对礁岩的孔隙均有影响。

2.Calcite cementation is one of the most important diagenesis in sandstone reservoir, extraordinarily growing and widespread.

方解石胶结是砂岩储层最重要的一种成岩作用，非常发育和广泛。

3.Paleogeotherm field is the key factor for sandstone diagenesis.

古地温场是决定砂岩成岩作用的关键因素。

4.Sandstone has entered the late diagenesis Asubage period.

砂岩已进入晚成岩a亚期阶段。

5.The cone bacteria bed resembles cone-incone in morphology, but it is neither product of diagenesis nor sedimentary structure.

该“锥状菌层”的外形特征与叠锥极为相似，但它不属于成岩作用的产物，也不是沉积构造特征。

6.Diagenesis has both favorable and unfavorable effects for quartz-poor sandstone of high clay mineral content.

成岩作用对高含粘土矿物的贫石英砂岩既有有利的一面，也有不利的一面。

7.The solubility of calcite in the diagenesis is closely related to the chemistry of groundwater and the temperature.

方解石在沉积岩成岩环境中的溶解度与地下水化学特征、温度等有着极为密切的关系。

8.Study suggests that Feixianguan formation is essentially controlled by sedimentation and diagenesis.

研究表明，飞仙关组储层主要受沉积作用和成岩作用的控制。

9.The process of diagenesis is crucial for understanding the transformation of sediment into rock.

对沉积物转变为岩石的过程，成岩作用至关重要。

10.During diagenesis, minerals can precipitate out of solution, altering the rock's composition.

在成岩作用过程中，矿物可以从溶液中析出，从而改变岩石的成分。

11.Geologists study diagenesis to better understand the history of sedimentary basins.

地质学家研究成岩作用以更好地理解沉积盆地的历史。

12.The effects of diagenesis can be seen in the formation of fossil fuels.

在化石燃料的形成中，可以看到成岩作用的影响。

13.Understanding diagenesis helps in predicting the reservoir quality of oil and gas.

理解成岩作用有助于预测油气的储层质量。

作文

Diagenesis is a term that refers to the physical and chemical processes that sediments undergo after they are deposited and before they become sedimentary rock. It plays a crucial role in the geological cycle, affecting the properties of the sediments and ultimately influencing the formation of fossil fuels and other resources. Understanding diagenesis (成岩作用) is essential for geologists, paleontologists, and anyone interested in Earth sciences, as it helps explain how sedimentary rocks form over time under varying conditions of pressure, temperature, and chemistry. The process of diagenesis (成岩作用) begins soon after sediments accumulate. Initially, these sediments are loose particles, such as sand, silt, and clay, which are often deposited in layers. Over time, these layers can become buried under additional sediments, increasing the pressure on the lower layers. This pressure causes the grains of sediment to come into closer contact with one another, leading to compaction. Compaction is one of the primary processes involved in diagenesis (成岩作用), as it reduces the pore space between particles, allowing for the formation of more solid rock. In addition to compaction, chemical changes also occur during diagenesis (成岩作用). As sediments are buried deeper, they are subjected to increased temperatures and pressures, which can lead to chemical reactions between the minerals present in the sediments. These reactions can result in the precipitation of new minerals, cementing the grains together and further solidifying the rock. For instance, silica, calcite, and iron oxides may act as cements, filling the spaces between sediment grains and contributing to the overall strength and durability of the rock. Another important aspect of diagenesis (成岩作用) is its impact on the preservation of organic materials. Fossils, for example, can be affected by the processes of diagenesis (成岩作用). When organic matter, such as plant material or animal remains, is buried along with sediments, it can undergo various transformations. The heat and pressure can lead to the conversion of organic matter into hydrocarbons, which are the primary components of fossil fuels like oil and natural gas. Thus, understanding diagenesis (成岩作用) is vital for energy resource exploration and extraction. Moreover, the study of diagenesis (成岩作用) contributes to our understanding of past environments and climate changes. By examining the characteristics of sedimentary rocks and the alterations they have undergone, scientists can infer information about the conditions that existed at the time of deposition. For instance, variations in mineral composition, porosity, and permeability can indicate changes in sea level, sediment supply, and even tectonic activity. In conclusion, diagenesis (成岩作用) encompasses a range of processes that transform sediments into sedimentary rocks through compaction, cementation, and chemical alteration. Its significance extends beyond geology, influencing the fields of paleontology, resource management, and environmental science. By studying diagenesis (成岩作用), we gain valuable insights into the Earth's history, the formation of natural resources, and the dynamic processes that shape our planet. This knowledge not only enhances our understanding of geological formations but also informs practices related to resource extraction and environmental conservation.

成岩作用是一个术语，指的是沉积物在沉积后和成为沉积岩之前所经历的物理和化学过程。它在地质循环中起着至关重要的作用，影响沉积物的特性，并最终影响化石燃料和其他资源的形成。理解diagenesis（成岩作用）对地质学家、古生物学家以及任何对地球科学感兴趣的人来说都是必不可少的，因为它有助于解释沉积岩如何在不同的压力、温度和化学条件下随着时间的推移而形成。 diagenesis（成岩作用）的过程在沉积物积累后不久就开始了。最初，这些沉积物是松散的颗粒，如沙子、淤泥和粘土，这些颗粒通常以层状沉积。随着时间的推移，这些层可能会被额外的沉积物埋藏，从而增加下层的压力。这种压力使沉积颗粒彼此靠近，从而导致压实。压实是diagenesis（成岩作用）中的主要过程之一，因为它减少了颗粒之间的孔隙空间，使岩石形成得更加坚固。 除了压实，化学变化也会在diagenesis（成岩作用）过程中发生。随着沉积物被埋得更深，它们会受到更高的温度和压力，这可能导致沉积物中矿物之间的化学反应。这些反应可能导致新矿物的沉淀，胶结颗粒并进一步固化岩石。例如，二氧化硅、方解石和铁氧化物可能作为胶结剂，在沉积颗粒之间填充空间，从而增强岩石的整体强度和耐久性。 diagenesis（成岩作用）的另一个重要方面是其对有机材料保存的影响。例如，化石可以受到diagenesis（成岩作用）过程的影响。当有机物质如植物材料或动物遗骸与沉积物一起埋藏时，它可能会经历各种转变。热量和压力可以导致有机物质转化为烃类，而烃类是石油和天然气等化石燃料的主要成分。因此，理解diagenesis（成岩作用）对能源资源的勘探和开采至关重要。 此外，对diagenesis（成岩作用）的研究有助于我们理解过去的环境和气候变化。通过检查沉积岩的特征及其所经历的变化，科学家可以推断出沉积时存在的条件。例如，矿物成分、孔隙度和渗透性的变化可以指示海平面、沉积物供应甚至构造活动的变化。 总之，diagenesis（成岩作用）包括一系列将沉积物通过压实、胶结和化学改变转化为沉积岩的过程。它的重要性超越了地质学，影响着古生物学、资源管理和环境科学等领域。通过研究diagenesis（成岩作用），我们获得了关于地球历史、自然资源形成以及塑造我们星球的动态过程的宝贵见解。这一知识不仅增强了我们对地质构造的理解，还为资源开采和环境保护相关实践提供了信息。