Quick Answer: Which Mineral In Granite Allows It To Weather More Slowly?

What type of rock is most easily weathered?

Certain types of rock are very resistant to weathering.

Igneous rocks, especially intrusive igneous rocks such as granite, weather slowly because it is hard for water to penetrate them.

Other types of rock, such as limestone, are easily weathered because they dissolve in weak acids..

Which rocks are the hardest?

Diamond is the hardest known mineral, Mohs’ 10.

What is the relationship between hydrolysis and granite?

Hydrolysis is the chemical weathering of minerals by a mildly acidic water that forms when rains dissolves trace gases in the atmosphere. The reaction of feldspar minerals in granite with rainwater produces kaolinite, white clay known as “China clay” used in the production of porcelain, paper and glass.

Does granite cool quickly or slowly?

Granite is an igneous rock that is composed of four minerals. These minerals are quartz, feldspar, mica, and usually hornblende. Granite forms as magma cools far under the earth’s surface. Because it hardens deep underground it cools very slowly.

What are the 4 factors that affect the rate of weathering?

But the rate of weathering is not the same for all rocks. Factors such as surface area, rock composition, and location influence the rate of weathering. water, the faster the rock will break down.

Does marble or granite Weather faster?

The students should then conclude that granite is more durable and will last longer than marble in a humid, temperate climate. … This would lead to more mechanical weathering of marble than of granite because of the differences in the hardness of their constituent minerals.

Which lasts longer granite or marble?

Durability. The biggest difference between granite and marble is the hardness of the stone. Granite is a much harder material and lasts considerably longer than marble. … Conversely, granite will withstand even severe weather.

Does marble weather easily?

Marble is metamorphosed limestone or dolomite. Both limestone and dolomite have a large concentration of calcium carbonate (CaCO3). Marble has many different sizes of crystals. … Today, headstones are made from marble and granite because both of these rocks weather very slowly and carve well with sharp edges.

How does temperature affect weathering?

Temperature changes can also contribute to mechanical weathering in a process called thermal stress. Changes in temperature cause rock to expand (with heat) and contract (with cold). As this happens over and over again, the structure of the rock weakens.

What does it mean when a rock’s surface area increases?

Rocks at the peak of a mountain weather faster because the rocks are exposed to more ice, wind, and rain. … weathered it can increase the surface area of the rock. This means that more of the rock is exposed to chemical weathering. Therefore, the rate of chemical weathering will increase.

Does granite weather slowly?

Granite cools slowly within the Earth’s crust. Feldspar, quartz and mica crystals form during the cooling.

What affects how fast weathering occurs?

Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. 2. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions.

How long does it take for granite to erode?

Granitic and gneissic domes in the humid southeastern United States appear to eroding at about 10 m/My. Our data suggest that granite, exposed in a variety of tectonic and non-glacial climatic settings, erodes quite slowly — on the order of a meter to perhaps a few tens of meters in a million years.

What is the strongest rock type?

Metamorphic rocksMetamorphic rocks tend to be the hardest of the three types of rock, which are igneous, metamorphic, and sedimentary rocks.

What are the controlling factors of weathering?

Water and temperature are key factors controlling both weathering rates and the types of weathering that occur: Water is required for chemical weathering reactions to occur. Water must be present for ice wedging to happen. Higher temperatures speed up chemical reactions.

What are the most important factors in determining the rate of weathering?

The most important factors that determine the rate of which weathering occurs are the type of rock and the climate. What is the difference between weathering and erosion? The forces of weathering break rocks into smaller and smaller pieces.

What is the most durable rock?

Quartzite is one of the most physically durable and chemically resistant rocks found at Earth’s surface. When the mountain ranges are worn down by weathering and erosion, less-resistant and less-durable rocks are destroyed, but the quartzite remains.

Can you melt granite?

The melting temperature of dry granite at ambient pressure is 1215–1260 °C (2219–2300 °F); it is strongly reduced in the presence of water, down to 650 °C at a few kBar pressure. Granite has poor primary permeability overall, but strong secondary permeability through cracks and fractures if they are present.

Is Granite affected by acid rain?

Acid rain is slowly destroying once-resistant granite. Acid rain is created by air pollutants. … However the acid found in rain, snow, fog and dust is beginning to affect some granite buildings and statues, granite lake beds and the wildlife they contain.

What two factors affect the rate of weathering?

Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. 2. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions.

What factors affect the rate of erosion?

The key climatic characteristics influencing erosion processes in a given territory include atmospheric precipitation, wind, air temperature, air humidity and solar radiation. The factors having a direct effect on soil erosion are atmospheric precipitation (water erosion) and wind (wind erosion).