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The answer depends upon how much pyrite is present in the shale. In organic-rich shales with a lot of pyrite, the oxidation of pyrite creates acidity. This acidity then helps to chemically weather the shale in the bedrock. Certain bacteria may also help to speed up the process of pyrite oxidation.
The answer is more difficult in organic-poor shales. some combination of physical weathering as well as proton- and ligand- promoted dissolution is involved. Fe-reducing bacteria may also help to dissolve Fe(III) from both silicate minerals as well as from iron oxyhydroxides like ferrihydrite, goethite and hematite.
What else can I help you with?
What kind of physical weathering is common in Mica and Shale?
In Mica, exfoliation is a common form of physical weathering where thin sheets of mica peel off due to changes in pressure and temperature. In Shale, frost wedging is a common type of physical weathering where ice expands in cracks, causing the rock to break apart.
What rocks are caused by weathering?
Some rocks commonly formed by weathering include sandstone, shale, and limestone. Sandstone is formed from the accumulation of sand grains cemented together, shale from the compaction of mud and clay, and limestone from the precipitation of calcium carbonate. These rocks can be broken down and altered by various weathering processes such as mechanical, chemical, and biological weathering.
What mineral is formed by the weathering of feldspar and other silicate minerals and is the principle mineral in clay and shale?
Kaolinite is the mineral formed by the weathering of feldspar and other silicate minerals, and it is the principal mineral in clay and shale. It is a type of clay mineral that is commonly found in sedimentary rocks.
What are examples of rocks that are easily weathered and rocks re resistant to weathering?
Examples of rocks that are easily weathered include limestone, sandstone, and shale, which are sedimentary rocks. Rocks that are resistant to weathering include granite, basalt, and quartzite, which are igneous and metamorphic rocks that have a more crystalline structure and are less prone to chemical breakdown from weathering processes.
What causes shale to turn into slate?
Shale turns into slate through a process called metamorphism, where heat and pressure transform the shale's minerals into new minerals like mica and chlorite. This process also causes the shale's original clay minerals to recrystallize, making it more compact and giving it a foliated texture characteristic of slate.
What kind of weathering is common in mica and shale?
Decompression and Exfoliation weathering are common in Mica and Shale.
What kind of physical weathering is common in Mica and Shale?
In Mica, exfoliation is a common form of physical weathering where thin sheets of mica peel off due to changes in pressure and temperature. In Shale, frost wedging is a common type of physical weathering where ice expands in cracks, causing the rock to break apart.
Is shale formed by physical or chemical weathering?
Shale is a clastic sedimentary rock formed of clay and silt sized eroded particles that are a result of both physical and chemical weathering. The clay minerals, however are the result of chemical weathering of feldspars.
What examples of rocks are easily weathered and rocks that are resistant to weathering?
limestone,sandstone,and shale
What rocks are caused by weathering?
Some rocks commonly formed by weathering include sandstone, shale, and limestone. Sandstone is formed from the accumulation of sand grains cemented together, shale from the compaction of mud and clay, and limestone from the precipitation of calcium carbonate. These rocks can be broken down and altered by various weathering processes such as mechanical, chemical, and biological weathering.
What are causes of weathering called?
the causes of weathering are water, wind, and ice. -your welcome.
What causes the breakdown of rocks?
WEATHERING and EROSION
What kind of weathering causes iron?
physical weathering
What chemical weathering called oxidation causes and nbsp?
what chemical weathering called oxidation causes
What mineral is formed by the weathering of feldspar and other silicate minerals and is the principle mineral in clay and shale?
Kaolinite is the mineral formed by the weathering of feldspar and other silicate minerals, and it is the principal mineral in clay and shale. It is a type of clay mineral that is commonly found in sedimentary rocks.
What are examples of rocks that are easily weathered and rocks re resistant to weathering?
Examples of rocks that are easily weathered include limestone, sandstone, and shale, which are sedimentary rocks. Rocks that are resistant to weathering include granite, basalt, and quartzite, which are igneous and metamorphic rocks that have a more crystalline structure and are less prone to chemical breakdown from weathering processes.
This metal is formed by the weathering of feldspar and other silicate minerals and is the principle mineral in clay and shale?
Kaolinite/Kaolin
