unfossiliferous

简明释义

[ʌnˌfɒs.ɪ.lɪˈfɛr.əs][ʌnˌfɑs.əˈlɪf.ər.əs]

不含化石的

无化石的

英英释义

Not containing fossils or fossilized remains; lacking fossiliferous materials.

不含化石或化石遗骸;缺乏化石材料。

单词用法

unfossiliferous rock

无化石岩石

unfossiliferous sediment

无化石沉积物

unfossiliferous strata

无化石层

unfossiliferous geological formation

无化石地质构造

unfossiliferous layers of earth

无化石的土层

characteristics of unfossiliferous deposits

无化石沉积物的特征

study of unfossiliferous regions

无化石区域的研究

presence of unfossiliferous material

无化石材料的存在

同义词

non-fossiliferous

非化石的

The non-fossiliferous layers of rock provide insight into the geological history without the influence of fossil records.

非化石的岩层提供了地质历史的见解,而不受化石记录的影响。

fossil-free

无化石的

Research on fossil-free energy sources is crucial for sustainable development.

对无化石能源的研究对可持续发展至关重要。

反义词

fossiliferous

含化石的

The sedimentary rock is fossiliferous, indicating it formed in an environment where organisms were abundant.

这块沉积岩是含化石的,表明它是在生物丰富的环境中形成的。

fossil-bearing

含化石的

Geologists often study fossiliferous layers to understand the history of life on Earth.

地质学家常常研究含化石的地层,以了解地球上的生命历史。

例句

1.The primary section of the formation is unfossiliferous. It remains uncertain whether its geological age is Eocene or Oligocene.

本文证实它是西露天组的一部分,是西露天组上部地层的相变,其时代应和西露天组相同。

2.The primary section of the formation is unfossiliferous. It remains uncertain whether its geological age is Eocene or Oligocene.

本文证实它是西露天组的一部分,是西露天组上部地层的相变,其时代应和西露天组相同。

3.Understanding unfossiliferous layers helps paleontologists determine the geological history of an area.

理解无化石的层有助于古生物学家确定一个地区的地质历史。

4.The geologist found that the rock layer was unfossiliferous, indicating it had not preserved any fossils.

地质学家发现这层岩石是无化石的,表明它没有保存任何化石。

5.The absence of fossils in the unfossiliferous rock indicates a rapid deposition process.

无化石的岩石中缺乏化石表明了快速沉积过程。

6.During the field trip, we encountered an unfossiliferous section of the cliff that sparked our curiosity.

在实地考察中,我们遇到了一个无化石的悬崖部分,引起了我们的好奇心。

7.The sediment samples were unfossiliferous, suggesting they were formed in an environment unsuitable for fossilization.

这些沉积样本是无化石的,这表明它们是在不适合化石化的环境中形成的。

作文

In the study of geology, the term unfossiliferous refers to rock formations or layers that do not contain any fossils. This characteristic can provide significant insights into the age and environmental conditions of the geological period in which these rocks were formed. Understanding whether a rock is unfossiliferous or fossiliferous (containing fossils) can help geologists determine the biological activity that occurred during that time. For instance, sedimentary rocks that are rich in fossils typically indicate that the area was once a vibrant ecosystem teeming with life. In contrast, unfossiliferous rocks may suggest that the environment was less conducive to life, potentially due to extreme conditions such as high temperatures, lack of water, or other factors that inhibit fossil formation.The importance of studying unfossiliferous rocks extends beyond mere curiosity about ancient life forms. These rocks can reveal information about the planet's history, including tectonic movements, climate changes, and even mass extinction events. For example, during certain periods in Earth's history, such as the late Permian period, massive volcanic eruptions and subsequent climate change led to widespread extinctions. The layers of rock from this time may be largely unfossiliferous, indicating that the ecosystems were severely disrupted.Moreover, the presence of unfossiliferous strata in a geological profile can also indicate a transition in sedimentary environments. For instance, if a sequence of rocks shifts from being fossil-rich to unfossiliferous, it may suggest a change in depositional environments, such as moving from a shallow marine setting to a deeper oceanic environment where conditions for fossil preservation are less favorable. This transition can inform scientists about past sea levels, sedimentation rates, and ecological shifts.In some cases, the study of unfossiliferous rocks has practical applications in fields such as oil and gas exploration. Geologists often look for specific rock types that are known to be good reservoirs or traps for hydrocarbons. While fossiliferous rocks can indicate biological activity, unfossiliferous layers might serve as cap rocks that prevent the escape of oil and gas, making them important for energy resource management.In conclusion, while the term unfossiliferous may initially seem to denote a lack of life or biological history, it is, in fact, a critical component of geological studies. By examining unfossiliferous rocks, scientists can piece together the complex narrative of Earth’s history, revealing insights into past climates, ecosystems, and even the processes that have shaped our planet over millions of years. Thus, understanding unfossiliferous formations is essential for both academic research and practical applications in industries that rely on geological knowledge.

在地质学研究中,术语unfossiliferous指的是不包含任何化石的岩石层或岩石层。这一特征可以为我们提供有关这些岩石形成时期的年龄和环境条件的重要见解。了解一块岩石是unfossiliferous还是含化石的(fossiliferous)可以帮助地质学家确定当时发生的生物活动。例如,富含化石的沉积岩通常表明该区域曾经是一个充满生机的生态系统。相反,unfossiliferous岩石可能表明环境不利于生命的存在,这可能是由于高温、缺水或其他抑制化石形成的因素。研究unfossiliferous岩石的重要性不仅仅在于对古代生命形式的好奇。这些岩石可以揭示地球历史的信息,包括构造运动、气候变化,甚至大规模灭绝事件。例如,在地球历史的某些时期,例如晚二叠世,大规模的火山喷发和随之而来的气候变化导致广泛的灭绝。这个时期的岩层可能大多是unfossiliferous,这表明生态系统遭到严重破坏。此外,地质剖面中unfossiliferous地层的存在也可能表明沉积环境的转变。例如,如果一系列岩石从富含化石的转变为unfossiliferous,这可能暗示沉积环境的变化,例如从浅海环境转向深海环境,在后者中化石保存的条件较差。这种转变可以告知科学家过去的海平面、沉积速率和生态变化。在某些情况下,研究unfossiliferous岩石在石油和天然气勘探等领域具有实际应用。地质学家通常寻找已知是良好储集层或封闭岩石的特定岩石类型。虽然富含化石的岩石可以指示生物活动,但unfossiliferous层可能作为阻止石油和天然气逃逸的盖层,使其在能源资源管理中变得重要。总之,尽管术语unfossiliferous最初似乎表示缺乏生命或生物历史,但实际上它是地质研究的关键组成部分。通过研究unfossiliferous岩石,科学家能够拼凑出地球历史的复杂叙述,揭示过去气候、生态系统,甚至塑造我们星球的过程的见解。因此,理解unfossiliferous地层对于学术研究和依赖地质知识的行业的实际应用都是必不可少的。