What mineral is least resistant to weathering?
Stability of Common Minerals Under Weathering Conditions
1. Table 6.2: Iron oxides, Al-hydroxides, clay minerals and quartz are the most stable weathered products whereas highly soluble minerals like halite are the least stable.
Which of the following is least resistant to weathering?
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.
Which type of rock is less resistant to erosion?
Metamorphic rocks have been subjected to tremendous heat and/or pressure, causing them to change into another type of rock. They are usually resistant to weathering and erosion and are therefore very hard-wearing.
Which minerals are most resistant to chemical weathering which are least resistant?
Further reactions result in the formation of clay minerals. Other common clay minerals: schmectite, gibbsite, montmorillonite, etc. Felsic minerals are most resistant to chemical weathering. Mafic minerals are least resistant to chemical weathering.
Is Sandstone resistant to weathering?
Sandstone is a sedimentary rock that is highly resistant to weathering. Other sedimentary rocks you will encounter are mudstone and siltstone. These are soft and easily weathered (lots in the Painted Desert). Yet another sedimentary rock you will see is limestone.
Which of the following rock types is the least resistant to 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 is the weathering of rocks?
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. … Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
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.
Is boulder clay a resistant rock?
Rock type – the cliffs are made from less-resistant boulder clay (made from sands and clays) which slumps when wet. Naturally narrow beaches – these beaches give less protection to the coast as it doesn’t reduce the power of the waves.
Is Marble resistant to weathering?
Marble is composed of a mineral that is resistant to chemical weathering (quartz), whereas granite is composed of minerals less resistant to weathering (like calcite). … Marble is composed of calcite, a mineral strongly resistant to weathering, whereas granite is composed of quartz, a mineral strongly reactive in water.