moraine apron

简明释义

1. 冰碛缘; 2. 前缘碛石带;

英英释义

例句

1.During the last ice age, many regions were covered by a thick moraine apron (冰碛裙) left behind by glaciers.

在上一个冰河时代，许多地区被厚厚的moraine apron (冰碛裙)覆盖，这是冰川留下的。

2.Scientists study the composition of the moraine apron (冰碛裙) to understand past glacial movements.

科学家研究moraine apron (冰碛裙) 的成分，以了解过去的冰川运动。

3.Hiking through the valley, we encountered a large moraine apron (冰碛裙) that marked the glacier's former extent.

在山谷徒步旅行时，我们遇到了一个巨大的moraine apron (冰碛裙)，标志着冰川曾经的范围。

4.The geologist explained how the moraine apron (冰碛裙) forms at the base of retreating glaciers.

地质学家解释了如何在退缩的冰川底部形成moraine apron (冰碛裙)。

5.The moraine apron (冰碛裙) is often rich in sediment, providing fertile ground for plant life.

由于沉积物丰富，moraine apron (冰碛裙) 常常为植物生长提供肥沃的土壤。

作文

Glaciers are powerful agents of change in the landscape, and one of their most fascinating features is the formation of moraines. Among these, the moraine apron stands out as a unique geological structure. A moraine apron is essentially a broad, gently sloping accumulation of debris that is deposited by a glacier as it retreats. This accumulation consists of rocks, soil, and other materials that have been eroded from the surrounding landscape, transported by the glacier, and eventually left behind when the ice melts. Understanding the significance of a moraine apron not only provides insight into the history of glacial activity but also helps us appreciate the dynamic processes that shape our planet.The formation of a moraine apron typically occurs at the foot of a glacier, where the ice meets the valley floor. As the glacier advances, it grinds down the underlying rock and picks up various materials, which are then carried along with the ice. When the glacier begins to melt and retreat, it releases these materials, creating a fan-shaped deposit that spreads outwards—this is the moraine apron. Over time, these deposits can accumulate significant thickness, contributing to the overall topography of the region.One of the most remarkable aspects of a moraine apron is its ecological importance. The debris left behind by glaciers creates a unique habitat for various plant and animal species. The mixture of soil and rock provides a substrate for pioneering plants that can withstand harsh conditions, such as limited nutrients and variable moisture levels. These initial colonizers play a crucial role in stabilizing the soil and paving the way for more complex ecosystems to develop over time. In this sense, a moraine apron serves as a vital stepping stone in the process of ecological succession.Moreover, the study of moraine aprons can offer valuable insights into climate change. By examining the characteristics of these deposits, scientists can infer past climatic conditions and glacial movements. For instance, variations in the size and composition of a moraine apron can indicate periods of glacial advance or retreat, thus contributing to our understanding of historical climate patterns. As climate change continues to affect glaciers around the world, monitoring these features becomes increasingly important for predicting future changes in our environment.In conclusion, the moraine apron is a significant geological feature formed by the activities of glaciers. It represents not only the physical evidence of glacial movement but also plays a critical role in shaping ecosystems and providing insights into climate history. As we continue to study and understand these formations, we gain a greater appreciation for the intricate processes that govern our planet's landscapes. The moraine apron is a testament to the power of nature and the ongoing interplay between ice, land, and life.

冰川是改变地貌的强大力量，其中一个最引人入胜的特征是冰碛的形成。在这些冰碛中，冰碛裙作为一种独特的地质结构脱颖而出。冰碛裙本质上是由冰川在退缩时沉积的广阔、缓坡的碎屑积累。这种积累由岩石、土壤和从周围地貌中侵蚀而来的其他材料组成，这些材料被冰川运输，并最终在冰融化时留下。理解冰碛裙的重要性不仅提供了对冰川活动历史的洞察，还帮助我们欣赏塑造我们星球的动态过程。冰碛裙的形成通常发生在冰川的脚下，冰川与山谷底部相接。当冰川向前推进时，它磨平了下面的岩石，拾取各种材料，然后随着冰的流动而携带。当冰川开始融化和退缩时，它释放出这些材料，形成一个扇形的沉积物，向外扩展——这就是冰碛裙。随着时间的推移，这些沉积物可以积累显著的厚度，增加该地区的整体地形。冰碛裙的一个显著方面是其生态重要性。冰川留下的碎屑为各种植物和动物物种创造了独特的栖息地。土壤和岩石的混合物为能够承受恶劣条件的先锋植物提供了基质，例如有限的养分和可变的水分水平。这些初步的开创者在稳定土壤和为更复杂的生态系统发展铺平道路方面发挥着关键作用。从这个意义上说，冰碛裙在生态演替过程中充当了重要的跳板。此外，研究冰碛裙可以为气候变化提供有价值的见解。通过检查这些沉积物的特征，科学家可以推断过去的气候条件和冰川运动。例如，冰碛裙的大小和组成的变化可以表明冰川的推进或退缩时期，从而有助于我们理解历史气候模式。随着气候变化继续影响全球的冰川，监测这些特征对于预测我们环境的未来变化变得越来越重要。总之，冰碛裙是由冰川活动形成的重要地质特征。它不仅代表了冰川运动的物理证据，还在塑造生态系统和提供气候历史见解方面发挥着关键作用。随着我们继续研究和理解这些形成，我们对支配我们星球地貌的复杂过程有了更大的欣赏。冰碛裙是自然力量和冰、土地与生命之间持续相互作用的证明。