Your question: Which will weather faster a rock containing a lot of iron or a rock made up of mostly quartz?

3. ROCK COMPOSITION- Some minerals resist weathering. Quartz is a mineral that weathers slowly. Rocks made up of minerals such as feldspar, calcite, and iron, weather more quickly.

Which rock is likely to weather faster?

The mineralogy and structure of a rock affects it’s susceptibility to weathering. 2. Different minerals weather at different rates. Mafic silicates like olivine and pyroxene tend to weather much faster than felsic minerals like quartz and feldspar.

How does rock type affect weathering?

Rock and Mineral Type

Weathering rates depend on several factors. … 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.

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

What Factors Determine the Rate of Weathering?

  • Mineral Composition. One type of weathering, known as chemical weathering, works at different rates depending on the chemical composition of affected rocks. …
  • Type of Lattice. …
  • Temperature. …
  • Water and Salt.
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Which rock will weather at a faster rate when exposed to acid rain?

Carbonate rocks react quickly with acids, and so they will chemically weather away at a much faster rate than other rocks IF plenty of acidic water is available!

What are the 5 factors that affect weathering?

Factors affecting weathering

  • rock strength/hardness.
  • mineral and chemical composition.
  • colour.
  • rock texture.
  • rock structure.

What are the three major types of weathering?

There are three types of weathering, physical, chemical and biological.

What does it mean when a rock surface area increases?

When the amount of surface area relative to volume increases, the rate of weathering increases. … 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.

Which is the best example of physical weathering?

The correct answer is (a) the cracking of rock caused by the freezing and thawing of water.

What are 5 examples of weathering?

Types of Chemical Weathering

  • Carbonation. When you think of carbonation, think carbon! …
  • Oxidation. Oxygen causes oxidation. …
  • Hydration. This isn’t the hydration used in your body, but it’s similar. …
  • Hydrolysis. Water can add to a material to make a new material, or it can dissolve a material to change it. …
  • Acidification.

What material is most resistant to weathering?

Quartz is known to be the most resistant rock- forming mineral during surface weathering. However, a quartzite, a rock containing more than 98% quartz, is shown to have many weathering features that resemble those in limestones (Wray, 1997).

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What type of rock is most susceptible to chemical weathering?

Not only is quartz the most stable of the common rock forming minerals in chemical weathering, its high hardness and lack of cleavage make it quite resistant to mechanical weathering.

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