甚至是长达数十亿年的岩石分解暴露在地球的天气。你确实是花岗岩,但有些风化花岗岩(https://en.m.wikipedia.org/wiki/Decomposed_granite),被地质学家不同于完整的固体物质。“易碎的比特”有自己的名字:* *(天鹤座)(https://en.wikipedia.org/wiki/Grus_(地质))* *。花岗岩是由晶体不同的矿物(主要是长石和石英)发展成彼此作为父岩浆冷却。最后因为不规则岩石固体晶体相互适应。花岗岩天气以几种不同的方式。裂缝可以从冷热循环形式。然而,化学风化花岗岩(https://www.americangeosciences.org/education/k5geosource/content/rocks/what-is-chemical-weathering)的主要方法是会变得易碎。(雨经常拿起一些酸性)(https://en.wikipedia.org/wiki/Acid_rain)从大气中,并浸润花岗岩。这酸性雨与长石和云母反应产生粘土矿物,主要(高岭土)(https://en.wikipedia.org/wiki/Kaolinite)。 This in turn makes it easier for water to get in the granite, and combined with heat cycles the process accelerates. As a result, the joints between the crystals loosen up, producing rock in the same condition as your rock.