Limestone And Marble Weather Faster Than Granite

Marble and limestone lie at the opposite end of the hardness scale from granite.

Limestone and marble weather faster than granite.

Hard rocks such as granite weather more slowly than softer rocks such as limestone. A gravestone made of granite will therefore resist fracturing cracking and chipping longer than a sandstone marker found in the same location. Limestone generally ranks at around a 3 on the scale while marble falls between 3 and 4. Granite does not react with rainwater and only weathers by physical erosion c.

Marble will weather more quickly. 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. Granite is more resistant physical weathering because of its large crystals b. Differential weathering happens when softer rocks weathers away and leaves harder more resistant rock behind.

Limestone has many cracks and holes that allow water to infiltrate and whether the rock. It is also more susceptible to chemical weathering via. Hypothesis if a diluted acid with a ph of four is used to weather limestone over a two week period then it will weather chemically faster than granite and shale because of its chemical composition. Limestone and marble can be dissolved by weak acids in rain.

By investigating the question does limestone chemically and mechanically weather faster than granite sandstone and shale it will help support the opinion that the rate of which limestone weathers is more rapid than that of granite sandstone and shale from abrasion and the altering of ph levels of diluted acid that will be used to show. Limestone imported from other countries is often light or even dark red brown or black. Quartz which of the following is most resistant to both chemical and physical weathering. Limestone and marble weather faster than granite because.

While marble is slightly harder and denser than limestone both rate very low on the mohs scale a rating used to measure the hardness of stones. The mineral calcite of which marble is composed is softer and less resistant to abrasion than granite. Select limestone with mineral dolomite present as this type of limestone can be polished and is harder than other types of limestone. Limestone and marble weather faster than granite because.