placer gold; alluvial gold

简明释义

沙金

英英释义

例句

1.During the gold rush, many people sought alluvial gold 冲积金 by panning in streams.

在淘金热期间，许多人通过在溪流中淘洗来寻找alluvial gold冲积金。

2.The miners were excited to find large amounts of placer gold 冲积金 in the riverbed.

矿工们在河床中发现大量的placer gold冲积金，感到非常兴奋。

3.Geologists study riverbeds to locate potential sources of alluvial gold 冲积金 deposits.

地质学家研究河床以寻找潜在的alluvial gold冲积金沉积物来源。

4.The process of extracting placer gold 冲积金 is often less labor-intensive than hard rock mining.

提取placer gold冲积金的过程通常比硬岩采矿劳动强度小。

5.In some regions, placer gold 冲积金 can be found just beneath the surface of the soil.

在某些地区，placer gold冲积金可以在土壤表面下方找到。

作文

Gold has fascinated humanity for centuries, not only for its beauty but also for its intrinsic value. Among the various types of gold found in nature, placer gold (冲积金) and alluvial gold (河流金) are particularly significant due to their accessibility and the methods used to extract them. Understanding these types of gold can provide insight into both historical and modern mining practices.Placer gold refers to gold that has been eroded from its original source and is found in loose sediments, typically in riverbeds or stream beds. This type of gold is often recovered through simple methods such as panning, where miners use a shallow pan to wash away lighter materials, leaving heavier gold particles behind. The allure of placer gold (冲积金) has driven many prospectors to rivers and streams, especially during gold rushes in history. For example, the California Gold Rush in the mid-19th century saw thousands flocking to rivers in search of this easily accessible treasure.On the other hand, alluvial gold (河流金) is a term that encompasses gold that has been deposited by the action of water, typically in floodplains or riverbanks. While placer gold (冲积金) can be found in various sedimentary environments, alluvial gold (河流金) specifically refers to gold that has settled in areas where water has slowed down, allowing the heavier particles to accumulate. The extraction of alluvial gold (河流金) often requires more sophisticated techniques, such as dredging or hydraulic mining, which can be more invasive to the environment compared to traditional panning methods.The importance of placer gold (冲积金) and alluvial gold (河流金) extends beyond mere extraction; they have played crucial roles in shaping economies and societies. The discovery of these gold types has led to the establishment of towns and cities, transforming landscapes and creating opportunities for wealth. However, this pursuit of gold has also brought about environmental challenges, including river degradation and habitat destruction, which are increasingly relevant in today's discussions about sustainable mining practices.In conclusion, understanding placer gold (冲积金) and alluvial gold (河流金) is essential not only for those interested in geology and mining but also for anyone who wishes to comprehend the historical significance of gold in human society. These terms represent more than just a type of mineral; they embody the dreams, struggles, and impacts associated with the quest for gold throughout history. As we move forward, it is crucial to balance the desire for economic gain with the need to protect our environment, ensuring that future generations can appreciate the natural beauty and value of gold without compromising the health of our planet.

金在几个世纪以来一直吸引着人类，不仅因为它的美丽，还因为它的内在价值。在自然界中，众多类型的金中，placer gold（冲积金）和alluvial gold（河流金）尤为重要，因为它们的可获取性和提取方法。理解这些类型的金可以提供对历史和现代采矿实践的洞察。Placer gold指的是从其原始来源侵蚀而来的金，通常存在于松散的沉积物中，尤其是在河床或溪床。这种类型的金通常通过简单的方法回收，例如淘金，矿工使用浅盘洗去较轻的材料，留下较重的金颗粒。placer gold的诱惑驱使许多探矿者前往河流和溪流，特别是在历史上的淘金热期间。例如，19世纪中期的加利福尼亚淘金热吸引了成千上万的人涌向河流，寻找这种易于获取的宝藏。另一方面，alluvial gold是一个涵盖金的术语，指的是通过水的作用沉积的金，通常出现在洪泛平原或河岸。虽然placer gold可以在各种沉积环境中找到，但alluvial gold特指在水流减缓的区域沉积的金，这样较重的颗粒得以积累。提取alluvial gold通常需要更复杂的技术，比如挖泥船或水力采矿，这些方法相比传统的淘金方法对环境的侵害更大。placer gold和alluvial gold的重要性超越了单纯的提取；它们在塑造经济和社会方面发挥了关键作用。这些金的发现促使城镇和城市的建立，改变了地貌，并创造了财富机会。然而，对金的追求也带来了环境挑战，包括河流退化和栖息地破坏，这在当今关于可持续采矿实践的讨论中变得愈加相关。总之，理解placer gold和alluvial gold对于那些对地质学和采矿感兴趣的人，以及希望理解金在人类社会历史意义的人来说都是至关重要的。这些术语不仅代表一种矿物；它们体现了与追求金相关的梦想、斗争和影响。随着我们向前发展，平衡经济收益的愿望与保护环境的需要至关重要，确保未来的世代能够欣赏金的自然美和价值，而不损害我们星球的健康。