peneplain

简明释义

英[ˈpiːnɪpleɪn]美[ˈpinəˌplen]

n. 准平原

英英释义

单词用法

同义词

反义词

例句

1.Quaternary loose and thicker deposits are widespread in Beihaitown, forming a fan-shaped peneplain in geomorphology.

北海市区广泛分布较厚的第四纪松散沉积物，地貌上为似扇形准平原。

2.Subaerial erosion occurs often with reduction to a peneplain.

陆上侵蚀常夷平成准平原。

3.Quaternary loose and thicker deposits are widespread in Beihaitown, forming a fan-shaped peneplain in geomorphology.

北海市区广泛分布较厚的第四纪松散沉积物，地貌上为似扇形准平原。

4.After millions of years, the mountains eroded into a vast peneplain 平原 that stretched across the valley.

经过数百万年，山脉侵蚀成了一片广阔的 peneplain 平原，延伸至山谷。

5.In the study of landscapes, a peneplain 平原 represents an area that has been leveled by weathering.

在地貌研究中，peneplain 平原 代表了一个因风化而被削平的地区。

6.The geologist explained that a peneplain 平原 is formed through the long-term erosion of high land.

地质学家解释说，peneplain 平原 是通过高地的长期侵蚀形成的。

7.Sediment deposition often occurs on a peneplain 平原, leading to fertile agricultural land.

沉积物通常会在 peneplain 平原 上沉积，从而形成肥沃的农业用地。

8.The formation of a peneplain 平原 can indicate a significant geological history of an area.

一个 peneplain 平原 的形成可以表明一个地区的重要地质历史。

作文

The concept of a peneplain is fundamental in understanding the processes of erosion and landscape development. A peneplain is essentially a nearly level land surface that has been formed by prolonged erosion, typically resulting from the gradual wearing down of mountains and hills over geological time. This term comes from the combination of the Latin word 'paene,' meaning 'almost,' and 'plain,' indicating its flat characteristics. Understanding peneplains helps geologists and geomorphologists analyze how landscapes evolve and change over millions of years.In the context of geological history, a peneplain represents a stage in the cycle of erosion known as the "cycle of erosion" proposed by William Morris Davis in the late 19th century. According to this theory, landscapes undergo a series of changes from youth to maturity and finally to old age, where they reach a state of equilibrium. It is during this final phase that a peneplain can form, signifying that the land has been extensively eroded to a point where it is almost flat.The formation of a peneplain often involves various geological processes, including weathering, transportation, and deposition. Over time, rivers and streams erode the land, carrying sediment away and depositing it in lower areas, which contributes to the leveling of the terrain. The slow but persistent action of these natural forces leads to the creation of a peneplain, where the original topography is significantly altered, and the landscape appears uniform.One of the most fascinating aspects of peneplains is their ability to provide insight into past climatic conditions and geological events. For instance, studying a peneplain can reveal information about ancient river systems, the types of vegetation that existed, and even the tectonic activity that may have shaped the region. This makes peneplains valuable for researchers trying to reconstruct the Earth's geological history.Additionally, peneplains can also influence modern land use and human activities. Areas that have been shaped into peneplains are often suitable for agriculture due to their relatively flat terrain and good drainage. However, these regions can also be susceptible to flooding and soil erosion if not managed properly. Understanding the nature of a peneplain can help land planners and environmentalists make informed decisions about sustainable development and conservation efforts.In conclusion, a peneplain is more than just a flat surface; it is a testament to the powerful forces of nature that have sculpted our planet over eons. By studying peneplains, we gain insights into the processes of erosion, the history of the Earth, and the ways in which these landscapes can be utilized or preserved in the present day. As we continue to explore and understand the complexities of our environment, the study of peneplains will undoubtedly remain an important aspect of geology and geography.

“peneplain”这个概念在理解侵蚀过程和景观发展方面是基础的。peneplain基本上是一个几乎平坦的地面，经过长时间的侵蚀而形成，通常是由于山脉和丘陵在地质时间尺度上的逐渐磨损而导致的。这个术语来自于拉丁语单词“paene”，意为“几乎”，以及“plain”，表示其平坦的特征。理解peneplain有助于地质学家和地貌学家分析景观如何在数百万年内演变和变化。在地质历史的背景下，peneplain代表了侵蚀循环中的一个阶段，这一理论由威廉·莫里斯·戴维斯在19世纪末提出。根据这一理论，景观经历了从年轻到成熟再到老年的一系列变化，在最后阶段，达到一种平衡状态，此时可以形成peneplain，这标志着土地经过广泛侵蚀，几乎变得平坦。peneplain的形成通常涉及各种地质过程，包括风化、运输和沉积。随着时间的推移，河流和溪流侵蚀土地，带走沉积物并在较低区域沉积，这有助于地形的平整。这些自然力量的缓慢但持续的作用导致了peneplain的形成，原始地形显著改变，景观看起来均匀。peneplain最迷人的方面之一是它们能够提供关于过去气候条件和地质事件的见解。例如，研究peneplain可以揭示古代河流系统的信息、曾经存在的植被类型，甚至可能塑造该地区的构造活动。这使得peneplain对于试图重建地球地质历史的研究人员非常有价值。此外，peneplain也可以影响现代土地利用和人类活动。已经被塑造成peneplain的地区通常因其相对平坦的地形和良好的排水性而适合农业。然而，如果管理不当，这些地区也容易发生洪水和土壤侵蚀。理解peneplain的性质可以帮助土地规划者和环保人士就可持续发展和保护工作做出明智的决策。总之，peneplain不仅仅是一个平坦的表面；它是自然强大力量雕刻我们星球的证明。通过研究peneplain，我们获得了对侵蚀过程、地球历史以及这些景观在当今如何被利用或保护的洞察。随着我们继续探索和理解环境的复杂性，peneplain的研究无疑将继续成为地质学和地理学的重要方面。