calcitic dolostone

简明释义

1. 方解石白云岩; 2. 钙质白云岩;

英英释义

例句

1.In the limestone quarry, we found layers of calcitic dolostone that are rich in fossils.

在石灰岩采石场，我们发现了富含化石的方解石白云岩层。

2.The geological survey revealed that the region is predominantly composed of calcitic dolostone, which indicates a history of marine sedimentation.

地质调查显示该地区主要由方解石白云岩组成，这表明其有海洋沉积的历史。

3.Construction companies often prefer calcitic dolostone for its durability and aesthetic appeal in building facades.

建筑公司通常更喜欢方解石白云岩，因为它在建筑外立面上具有耐用性和美观性。

4.Geologists classify calcitic dolostone as a carbonate rock that can form in various environments.

地质学家将方解石白云岩归类为一种可在多种环境中形成的碳酸盐岩。

5.The presence of calcitic dolostone in the area suggests significant geological processes over millions of years.

该地区存在方解石白云岩，表明数百万年来经历了重要的地质过程。

作文

Calcitic dolostone is a fascinating geological formation that plays a significant role in our understanding of sedimentary rocks. This type of rock is primarily composed of the mineral dolomite, which is a carbonate mineral composed of calcium magnesium carbonate (CaMg(CO3)2). However, what distinguishes calcitic dolostone (方解石白云岩) from other dolostones is its notable content of calcite, another carbonate mineral made up of calcium carbonate (CaCO3). The presence of calcite gives this rock its unique characteristics and makes it an important subject of study for geologists. The formation of calcitic dolostone (方解石白云岩) typically occurs in shallow marine environments where conditions are favorable for the precipitation of carbonate minerals. Over time, layers of sediment accumulate and undergo diagenesis, a process that transforms sediments into solid rock. During this process, magnesium-rich fluids can replace some of the calcium in the original limestone, resulting in the formation of dolomite. However, if there is a significant amount of calcite present, the end product will be classified as calcitic dolostone (方解石白云岩). One of the most interesting aspects of calcitic dolostone (方解石白云岩) is its economic importance. Many deposits of this rock are rich in valuable resources such as petroleum and natural gas. The porosity and permeability of calcitic dolostone (方解石白云岩) make it an excellent reservoir rock, allowing hydrocarbons to accumulate within its pore spaces. Consequently, understanding the formation and distribution of calcitic dolostone (方解石白云岩) is crucial for exploration geologists seeking to locate new sources of energy. Additionally, calcitic dolostone (方解石白云岩) can also serve as a significant indicator of past environmental conditions. The composition and texture of these rocks can provide valuable insights into the paleoenvironment in which they formed. For instance, variations in the ratio of calcite to dolomite can indicate changes in sea level, temperature, and salinity during the time of deposition. By studying these changes, scientists can reconstruct ancient marine ecosystems and understand how they responded to climatic shifts over geological time scales. In conclusion, calcitic dolostone (方解石白云岩) is more than just a simple sedimentary rock; it is a complex and multifaceted formation that offers valuable information about our planet's geological history. Its unique composition, economic significance, and role as an environmental indicator make it a key focus of study in the field of geology. As we continue to explore and learn more about calcitic dolostone (方解石白云岩), we gain deeper insights into the processes that shape our Earth and the resources it provides. Understanding this rock helps us appreciate the intricate interplay between geological processes and the environment, ultimately enhancing our knowledge of Earth’s dynamic systems.

方解石白云岩是一种迷人的地质形成， 在我们理解沉积岩方面发挥着重要作用。这种岩石主要由白云石矿物组成，白云石是一种由碳酸钙镁（CaMg(CO3)2）组成的碳酸盐矿物。然而，区别于其他白云岩的是，calcitic dolostone（方解石白云岩）显著含有方解石，这是一种由碳酸钙（CaCO3）组成的碳酸盐矿物。方解石的存在赋予了这种岩石独特的特性，使其成为地质学家研究的重要对象。calcitic dolostone（方解石白云岩）的形成通常发生在浅海环境中，在这些地方，条件适合碳酸盐矿物的沉淀。随着时间的推移，沉积物层逐渐积累并经历成岩作用，这一过程将沉积物转变为固体岩石。在这个过程中，富含镁的流体可以替代原始石灰岩中的部分钙，从而形成白云石。然而，如果存在大量的方解石，最终产物将被归类为calcitic dolostone（方解石白云岩）。calcitic dolostone（方解石白云岩）最有趣的方面之一是它的经济重要性。许多这种岩石的储层富含石油和天然气等宝贵资源。calcitic dolostone（方解石白云岩）的孔隙度和渗透性使其成为优秀的储层岩石，使烃类能够在其孔隙空间内聚集。因此，了解calcitic dolostone（方解石白云岩）的形成和分布对于寻求新能源来源的勘探地质学家至关重要。此外，calcitic dolostone（方解石白云岩）还可以作为过去环境条件的重要指示器。这些岩石的成分和纹理可以提供有关它们形成时古环境的宝贵见解。例如，方解石与白云石的比例变化可以指示沉积期间海平面、温度和盐度的变化。通过研究这些变化，科学家可以重建古代海洋生态系统，并了解它们如何对地质时间尺度上的气候变化作出反应。总之，calcitic dolostone（方解石白云岩）不仅仅是一种简单的沉积岩；它是一种复杂且多面的形成， 提供了关于我们星球地质历史的宝贵信息。其独特的成分、经济意义以及作为环境指示器的作用，使其成为地质学领域研究的关键重点。随着我们继续探索和了解更多关于calcitic dolostone（方解石白云岩）的知识，我们将更深入地了解塑造我们地球的过程及其提供的资源。理解这种岩石帮助我们欣赏地质过程与环境之间复杂的相互作用，最终增强了我们对地球动态系统的认识。