Limestone Granite Weathering

Rainwater can get acidic because of the carbonic acid that it contains.

Limestone granite weathering. Granite vs limestone characteristics assist us to distinguish and recognize rocks. The rounded shapes are pillows formed at depth in the granitic magma roots rub against the edges of the granite burrowing animals eat away parts of the granite weathering removes corners and edges as in spheroidal weathering. Limestone is a rock which is more prone to especially chemical weathering than other types of rocks such as granite. Weathering is the breakdown of rock by physical chemical or biological processes.

A gravestone made of granite will therefore resist fracturing cracking and chipping longer than a sandstone marker found in the same location. These cracks allow water to pass easily through the rock. These two processes indicate the direct attack of atmospheric moisture on the individual minerals of a rock that ultimately affect its structural make up. Characteristics of rocks include texture appearance color fracture streak hardness etc.

Limestone areas are predominantly affected by chemical weathering when rainwater which contains a weak carbonic acid reacts with limestone. Limestone gets pitted and porous due to chemical weathering. B hydration and hydrolysis. Many horizontal and vertical cracks run through limestone.

Granite vs limestone characteristics. Although the granite is now starting to show some signs of decay it took over a hundred years and exposure to aggressive water to do so. This greatly shows that out of the three rock samples being tested against limestone that granite will most likely show less weathering through the duration of the experiment. Mechanical weathering is weathering done by trees ice etc.

This causes the limestone to dissolve. It begins when a crack made larger by freeze thaw and tree roots growing larger until the rock splits. Karst is landscape formed from the weathering of limestone. Hard rocks such as granite weather more slowly than softer rocks such as limestone.

Granite is extremely hard and less affected by the freeze thaw cycle the forces of abrasion and the surface exfoliation processes that are all a part of physical weathering. Thus limestone is not easily soluble in pure water but carbonated water dissolves the rock effectively. Why does weathering of granite bedrock produce rounded shapes. This is because calcium carbonate which is one of the minerals found in limestone readily reacts with rainwater.

Limestone being sedementary is sheety and softer than granite which is igneous and harder having less cracks so it weathers more slowly. Limestone is a sedimentary rock created from the remains of dead sea creatures and is predominately made up of calcium carbonate.