microfossil

简明释义

英[ˌmaɪkrəʊˈfɒs(ə)l]美[ˌmaɪkroʊˈfɑːsl]

n. 微化石；[古生] 微体化石

英英释义

单词用法

同义词

反义词

例句

1.The microfossil plants of the two formations have their own peculiarities, but have some common elements too. This shows that the deposition of the Sinian and Cambrian were continuous.

两组微古植物各具特色，但也存在一些共同分子，表现为连续演化的特点，说明震旦系和寒武系的沉积是连续的。

2.Microfossil analysis reveals three transgression layers in the CQJ4 borehole, which are at 4.

微体生物分析显示该孔岩芯记录了三个海侵层，分别位于4。

3.The microfossil plants of the two formations have their own peculiarities, but have some common elements too. This shows that the deposition of the Sinian and Cambrian were continuous.

两组微古植物各具特色，但也存在一些共同分子，表现为连续演化的特点，说明震旦系和寒武系的沉积是连续的。

4.Kuanchuanpu biota is the early Cambrian microfossil which is characterized as an early animal and plant fossil in the southern region of Shaanxi province.

宽川铺生物群是陕南地区早寒武世早期一个以微体动、植物化石为特色的生物群。

5.This achievement provides the microfossil materials for the study of the lower ordovician in Northern Guizhou.

这一成果对于贵州北部下奥陶统的研究，提供了微体化石资料。

6.The microfossil plants of the two formations have their own peculiarities, but have some common elements too. This shows that the deposition of the Sinian and Cambrian were c...

两组微古植物各具特色，但也存在一些共同分子，表现为连续演化的特点，说明震旦系和寒武系的沉积是连续的。

7.The sea level changes of Holocene in Shanghai region are discussed in this paper based on the spore - pollen and microfossil analysis of Zhaoxiang core.

本文通过对位于上海同身西侧的赵巷孔进行孢粉和微古分析，论述上海地区全新世海平面变化。

8.Paleontologists often analyze 微化石 to reconstruct past climate conditions.

古生物学家经常分析微化石以重建过去的气候条件。

9.Researchers found a diverse array of 微化石 in the core samples from the ocean floor.

研究人员在海底的岩心样本中发现了多种多样的微化石。

10.The study of 微化石 can provide insights into ancient marine environments.

对微化石的研究可以提供有关古代海洋环境的见解。

11.Using 微化石, scientists can track evolutionary changes over millions of years.

通过使用微化石，科学家可以追踪数百万年来的进化变化。

12.The presence of certain 微化石 in sediment can indicate the age of the rock layer.

沉积物中某些微化石的存在可以指示岩层的年龄。

作文

Microfossils, or 微化石, are the tiny remains of organisms that lived millions of years ago. These minuscule fossils can be found in sedimentary rocks and are crucial for understanding the history of life on Earth. They often range in size from a few micrometers to several millimeters, making them difficult to see without the aid of a microscope. The study of 微化石 provides valuable insights into past environments, climate changes, and the evolution of various species.One of the most significant aspects of 微化石 is their role in biostratigraphy, which is the use of fossil organisms to date and correlate rock layers. By identifying specific 微化石 within a geological formation, scientists can determine the relative ages of the rocks and understand the sequence of historical events. For instance, certain species of foraminifera, a type of microfossil, are known to have existed during specific time periods. Therefore, their presence in a rock layer can indicate the age of that layer.Moreover, 微化石 can provide clues about ancient ecosystems. By analyzing the composition and abundance of these tiny fossils, researchers can infer the types of environments that existed in the past. For example, the presence of certain diatoms, another type of microfossil, can suggest that the area was once covered by water, as these organisms thrive in aquatic environments. This information is crucial for reconstructing paleoenvironments and understanding how ecosystems respond to changes over time.In addition to their geological significance, 微化石 also hold importance in the field of paleoclimatology. Changes in the types and distributions of 微化石 can indicate shifts in climate conditions. For example, variations in the abundance of specific microfossils can reflect changes in sea level, temperature, and nutrient availability. By studying these patterns, scientists can develop models that predict how current climate change may affect marine and terrestrial ecosystems.The extraction and analysis of 微化石 require specialized techniques. Scientists often use thin sections of rock under a microscope to identify and count the different types of microfossils present. Advanced imaging technologies, such as scanning electron microscopy, allow for detailed examinations of the morphology and structure of these tiny remains. This level of analysis helps paleontologists and geologists gain a deeper understanding of the complexities of ancient life.In conclusion, 微化石 are not just remnants of the past; they are essential tools for scientists who seek to unravel the mysteries of Earth's history. Their study opens a window into ancient environments, provides insight into evolutionary processes, and aids in understanding climate change. As technology advances, the methods for studying 微化石 continue to improve, leading to new discoveries that enhance our knowledge of the planet's biological and geological evolution. The significance of these tiny fossils cannot be overstated, as they play a pivotal role in piecing together the vast puzzle of Earth's history.

微化石是指生活在数百万年前的生物的微小遗骸。这些微小的化石可以在沉积岩中找到，对于理解地球生命的历史至关重要。它们的大小通常从几微米到几毫米不等，使得在没有显微镜的情况下很难看到。对微化石的研究提供了关于过去环境、气候变化和各种物种演化的宝贵见解。微化石最重要的方面之一是它们在生物地层学中的作用，即利用化石生物对岩层进行年代测定和相关性分析。通过识别地质构造中的特定微化石，科学家可以确定岩石的相对年龄并了解历史事件的顺序。例如，某些种类的有孔虫，一种微化石，已知在特定的时期存在。因此，它们在岩层中的存在可以指示该岩层的年龄。此外，微化石还可以提供关于古代生态系统的线索。通过分析这些微小化石的组成和丰度，研究人员可以推断出过去存在的环境类型。例如，某些硅藻的存在可以表明该地区曾经被水覆盖，因为这些生物在水生环境中繁盛。这些信息对于重建古环境和理解生态系统如何随时间变化而反应至关重要。除了地质意义外，微化石在古气候学领域也具有重要性。微化石类型和分布的变化可以指示气候条件的变化。例如，特定微化石丰度的变化可以反映海平面、温度和养分可用性的变化。通过研究这些模式，科学家可以开发出预测当前气候变化可能如何影响海洋和陆地生态系统的模型。提取和分析微化石需要专业技术。科学家通常在显微镜下使用薄片岩石来识别和计数存在的不同类型的微化石。先进的成像技术，如扫描电子显微镜，允许对这些微小遗骸的形态和结构进行详细检查。这种级别的分析帮助古生物学家和地质学家更深入地理解古代生命的复杂性。总之，微化石不仅仅是过去的遗迹；它们是科学家揭开地球历史之谜的重要工具。它们的研究为古代环境打开了一扇窗，提供了对进化过程的洞察，并有助于理解气候变化。随着技术的进步，研究微化石的方法不断改进，带来了新的发现，增强了我们对地球生物和地质演变的认识。这些微小化石的重要性不容低估，因为它们在拼凑地球历史的巨大拼图中发挥着关键作用。