What rock is most resistant to both chemical and mechanical weathering?
Metamorphic rock is most resistance to both chemical and mechanical weathering………..
Which material is most resistant to chemical weathering?
Quartz is known to be the most resistant rock- forming mineral during surface weathering.
Which rocks are more resistant to weathering?
Igneous rocks are usually solid and are more resistant to weathering. Intrusive igneous rocks weather slowly because it is hard for water to penetrate them. Sedimentary rocks usually weather more easily. For example, limestone dissolves in weak acids like rainwater.
What influences both mechanical and chemical weathering?
Climate. A region’s climate strongly influences weathering. Climate is determined by the temperature of a region plus the amount of precipitation it receives. … Since water participates in both mechanical and chemical weathering, more water strongly increases weathering.
Which type of rock would be least 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 of the following rock forming minerals is more resistant to weathering compared to hornblende?
Which of the following rock forming minerals is more resistant to weathering compared to Hornblende? Explanation: The resistance to weathering increases in the following order for dark coloured minerals- Olivine, Augite, Hornblende, Biotite. Hence only Biotite is most resistant.
Which material is most resistant to chemical weathering quizlet?
Silicate minerals that crystallize early (e.g., olivine) are least resistant to weathering, whereas silicate minerals that crystallize late (e.g., quartz) are most resistant. Additionally, a rock with cracks and/or holes is more susceptible to chemical weathering.
What mineral is most resistant to weathering?
Zircon proved to be the most resistant mineral considered, garnet the most readily destroyed in weathering. Other common heavy minerals show considerable range in resistance.
Is shale resistant to weathering?
The material found in sediment grains also affects the rate of weathering. The mechanical weathering of rocks like shale and sandstone causes their grains to break up over time and become sand and clay particles. … These rocks and other similar types tend to resist weathering.
Which mineral is least resistant to chemical weathering?
Chemical weathering reactions are with the cations that bind the silica structural units together. So it makes sense that isolated tetrahedra are the least stable in weathering, while quartz, which is completely formed of interlocking silica tetrahedra with no intervening cations, is the most stable.
What is not true about mechanical weathering?
The statement about mechanical weathering that is not true is involves a major change in the mineral composition of the weathered material or choice d. When there is a major change in the mineral composition after being weathered it means that it underwent chemical weathering and not just mechanical weathering.
Is feldspar chemical weathering resistant?
Hydrogen and hydroxide replace elements on minerals. of a relatively weathering resistant mineral, feldspar. When this mineral is completely hydrolyzed, clay minerals and quartz are produced and such elements as K, Ca, or Na are released.