NSM 1400 Chapter Notes -Crystal Growth, Calcite, Extrusive Rock
Document Summary
Earth science section 8. 2 weathering: weathering, note: weathering is a basic component of the rock cycle and an important step in. 2: frost wedging- when rocks break up mechanically due to the expansion of freezing water in cracks, critical thinking question: why are intrusive rocks more likely to experience sheeting, they form deep underground under confining pressure. Extrusive rocks don"t expand because they are formed at the earth"s surface. Sheeting: sheeting- a type of mechanical weathering that is caused by the splitting off of slablike sheets of rock, exfoliation domes- big dome shaped structure that is typically made up of granite that is formed by sheeting. Water and carbonic acid: note: water is the most important agent of chemical weathering, it only takes a small amount of dissolved material to activate water, carbonic acid- carbon dioxide dissolved with water. It also decomposes a lot of materials and produces water soluble products.
