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From depth of burial by continual sediment deposition from above, or from compressional stress from tectonic plate collisions, shale is metamorphosed into slate over periods of millions of years. During this compression, the clay minerals making up the shale decompose as they become unstable in the high pressure environment, and their chemical components are gradually transformed into minerals that are more stable in the newly forming higher pressure environment. A more stable high pressure mineral is mica, consisting of flat individual crystals. The mica minerals form in the shale and align themselves at right angles to the direction of the pressure producing a metamorphic rock layering known as foliation. The foliation in slate creates cleavage planes that will bear no relationship to the original bedding planes found in the parent rock, shale.
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What causes shale to change into slate?
Shale changes into slate through a process called metamorphism, which involves heat, pressure, and chemical changes. The heat and pressure cause the minerals in the shale to recrystallize into a denser, more compact form, resulting in the fine-grained texture and foliation characteristic of slate. The composition of the original shale, as well as the intensity and duration of the metamorphic conditions, influence the final characteristics of the slate.
What is the parent rock of slate?
The parent rock of slate is shale. Slate forms from the metamorphism of shale, which is a sedimentary rock composed of clay and silt-sized particles. The intense heat and pressure during metamorphism cause the clay minerals in shale to recrystallize into a dense, foliated structure characteristic of slate.
Shale is a sedimentary rock that can be metamorphosed into slate by what?
Shale can be metamorphosed into slate through the process of low-grade regional metamorphism, which involves heat and pressure causing the minerals within the shale to recrystallize into a fine-grained, foliated structure characteristic of slate.
Which is an igenous rock limestone rhyolite slate or shale?
Rhyolite is an igneous rock. Limestone, slate, and shale are sedimentary rocks.
How can shale be turned into slate?
Shale can be turned into slate through metamorphism, which involves applying heat and pressure to the shale over time. This process causes the minerals in the shale to recrystallize and align, creating the distinct layers, smooth texture, and foliation characteristic of slate.
Can heat and pressure change the sedimentary shale into slate?
No
Can heat and pressure change the sedimentary rock shale into slate?
No
What is similarities between shale and slate?
Slate and shale have the same make-up. Slate is formed from sedimentary shale by pressure and heat. Wet shale has the same smell that wet slate has.
What rock is slate but in the past it was shale?
Shale is a sedimentaory rock, while Slate is a metamorphic rock. Generally the shale is metamorphosed into slate.
Is slate harder than shale?
Yes, slate is harder than shale. Slate is a fine-grained, foliated metamorphic rock that has undergone more intense heat and pressure than shale, a fine-grained sedimentary rock. As a result, slate is more durable and resistant to erosion compared to shale.
How was slate made?
Slate starts as clay. Thhrough erosion and nature, the clay can change to shale or slate. Shale happens when layers upon layers are of clay and sediment are piled together and held in place with something very very heavy. Slate is altered shale that had low heat and not very much pressure put on it. It takes thousands of years for slate to change. Slate can be any color but is mostly found in gray or black. When it is broken, it splits into layers.
Was slate once shale?
Yes, slate was once shale. Shale is a sedimentary rock formed from the compaction of mud and clay, while slate is a metamorphic rock that forms from the metamorphism of shale. The process of metamorphism involves heat and pressure, which transforms the shale into slate by aligning the minerals and creating a foliation (layering) within the rock.
Slate is a denser version of?
Slate is metamorphosed shale or mudstone.
What is a metamorphic rock formed from a shale?
Slate. Slate is a low grade metamorphic rock derived from shale or mudstone.
Is slate a metamorphic rock which transforms from shale?
Slate is a metamorphic rock formed from the parent rock shale.
What sedimentary rock does shale turn into?
Slate is metamorphosed shale.
What causes shale to change into slate?
Shale changes into slate through a process called metamorphism, which involves heat, pressure, and chemical changes. The heat and pressure cause the minerals in the shale to recrystallize into a denser, more compact form, resulting in the fine-grained texture and foliation characteristic of slate. The composition of the original shale, as well as the intensity and duration of the metamorphic conditions, influence the final characteristics of the slate.
