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How does the origin of slaty cleavage differ from the origin of fissility in shale?
Wiki User
β 11y ago
Slaty cleavage is a result of stress and strain during the metamorphism process where the minerals that make up the slate become deformed and or re-crystallise with an orientation normal to the principle stress field. The fissile nature of shale is a result of the preferential alignment of clay minerals during the formation of the rock. This is because clay minerals are plate like and so form horizontal layers much like you would get if you stacked playing cards.
Wiki User
β 11y ago
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What is The cleavage of a shale rock?
Schist has slaty cleavage, also called crenulations ( tiny folds).
What is shales made up of?
Yes. It is made out if clay. The difference between just clay and shale is that the shale consists of compacted clay. Because of compaction, the clay particles (which are flaky) tend to align themselves resulting in varying degrees of fissility. If shale is even more compacted, it will turn into a slate, which is no longer a sedimentary but a metamorphic rock.
What is the origin of shale?
Shale is a sedimentary rock formed from mud on the bottoms of bodies of water and in floodplains.
Is shale rock heavy or light?
Shale is a fine-grained sedimentary rock whose original constituents were clay minerals or muds. It is characterized by thin laminae[1] breaking with an irregular curving fracture, often splintery and usually parallel to the often-indistinguishable bedding plane. This property is called fissility. Non-fissile rocks of similar composition but made of particles smaller than 1/16 mm are described as mudstones. Rocks with similar particle sizes but with less clay and therefore grittier are siltstones. Shale is the most common sedimentary rock.[2]
Is shale magnetic?
no shale is not magnetic
What is metamorphic shale?
The Shale is not a metamorphic rock it is a sedimentary rock.
Is shale fracture or cleavage?
the cleavage is Poor
What is The cleavage of a shale rock?
Schist has slaty cleavage, also called crenulations ( tiny folds).
What is shales made up of?
Yes. It is made out if clay. The difference between just clay and shale is that the shale consists of compacted clay. Because of compaction, the clay particles (which are flaky) tend to align themselves resulting in varying degrees of fissility. If shale is even more compacted, it will turn into a slate, which is no longer a sedimentary but a metamorphic rock.
What is the origin of shale?
Shale is a sedimentary rock formed from mud on the bottoms of bodies of water and in floodplains.
Is shale a kind of rock?
u answer is................ i think it is............................ metamorphosed shale with very flat, well defined cleavage planes THANK U FOR UR TIME from: Shilo Kim Johnson
What are two minerals with cleavage?
Halite and Calcite. Halite has what is known as cubiccleavage, where there is cleavage in three directions at 90 degree angles. Calcite has what is known as rhombohedral cleavage, where there is cleavage in three directions but at 120 and 60 degree angles.
Is Shale an Irish surname?
It is a surname of English origin (Norfolk).
What are the changes caused by metamorphism of shale to slate?
With increases of heat and pressure deep underground on shale, chlorite and mica minerals form and line up along basal cleavages, imparting the new rock slate with "slatey" cleavage. Slately cleavage is a characteristic of rock that can be broken into thin sheets with smooth flat faces. Visible on these smooth flat faces is a somewhat noticeable sheen from light reflection. This occurs as the light is bounced off the aligned cleavage faces of the minerals contained in the slate.
Is shale rock heavy or light?
Shale is a fine-grained sedimentary rock whose original constituents were clay minerals or muds. It is characterized by thin laminae[1] breaking with an irregular curving fracture, often splintery and usually parallel to the often-indistinguishable bedding plane. This property is called fissility. Non-fissile rocks of similar composition but made of particles smaller than 1/16 mm are described as mudstones. Rocks with similar particle sizes but with less clay and therefore grittier are siltstones. Shale is the most common sedimentary rock.[2]
How are mineral fracture and mineral cleavage different?
Cleavage in minerals is the tendency of the mineral to break across a definite plane, creating a smooth surface. Two minerals with cleavage are granite and shale.
What is the origin of the word shale?
The word "shale" originated from the Old English word "scealu," meaning shell or husk. It is likely derived from the Proto-Germanic word "skalΕ" which means "to split" or "to divide." Shale refers to a fine-grained sedimentary rock composed of consolidated clay or mud.
