风化的定义:风化是在地表条件下逐渐破坏岩石,将其溶解,将其磨损或将其分解成逐渐变小的碎片。想想大峡谷或散布在美国西南部的红色岩层。它可能涉及称为机械风化的物理过程,或称为化学风化的化学活动。一些地质学家还包括生物的行为或有机风化。这些有机风化力可分为机械或化学或两者的组合。机械风化机械风化涉及五个主要过程,将岩石物理地破碎成沉积物或颗粒:磨蚀,结冰,热破裂,水合破碎和去角质。研磨与其他岩石颗粒发生磨损。冰的结晶可以产生足以使岩石破碎的力。由于显着的温度变化可能发生热破裂。水化 – 水的影响 – 主要影响粘土矿物质。在岩石形成后挖掘出来时会发生剥落。机械风化不仅影响地球。随着时间的推移,它也会影响一些砖石建筑。

新加坡国立大学地质学Assignment代写:风化的定义

Definition of Weathering: Weathering is the gradual destruction of rock under surface conditions, dissolving it, wearing it away or breaking it down into progressively smaller pieces. Think of the Grand Canyon or the red rock formations scattered across the American Southwest. It may involve physical processes, called mechanical weathering, or chemical activity, called chemical weathering. Some geologists also include the actions of living things, or organic weathering. These organic weathering forces can be classified as mechanical or chemical or a combination of both. Mechanical Weathering Mechanical weathering involves five major processes that physically break rocks down into sediment or particles: abrasion, crystallization of ice, thermal fracture, hydration shattering and exfoliation. Abrasion occurs from grinding against other rock particles. Crystallization of ice can result in force sufficient enough to fracture rock. Thermal fracture may occur due to significant temperature changes. Hydration — the effect of water — predominantly affects clay minerals. Exfoliation occurs when rock is unearthed after its formation. Mechanical weathering does not just affect the earth. It can also affect some brick and stone buildings over time.

 

发表评论

电子邮件地址不会被公开。 必填项已用*标注