How is metamorphic slate formed from sedimentary shale?

How is metamorphic slate formed from sedimentary shale?

Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression.

Is slate a metamorphic rock formed from shale?

Slate is a low grade metamorphic rock generally formed by the metamorphosis of mudstone / shale, or sometimes basalt, under relatively low pressure and temperature conditions.

How does shale become slate?

Explanation: Shale is a sedimentary rock. Slate is a metamorphic rock it is semi impermeable and hard. Pressure compacts the shale into slate and the heat hardens the rock.

How is slate different from shale?

Shale refers to a fine grained rock or a clastic sedimentary rock that is majorly composed of mud. On the other hand, slate, which is also a fine grained rock, is foliated and homogenous metamorphic.

What rock turns into slate?

metamorphic rock
Slate is a metamorphic rock that is formed when shales and clays are put under great pressure and heated inside the earth for millions of years. Like shale, it splits apart into sheets, which means that it has good cleavage. Slate is usually gray or black and is used to make blackboards and roofing tiles.

Does shale turn into slate?

This process is called metamorphism. All rocks can be metamorphosed, and there are many different types of metamorphic rock. Limestone can change into marble, shale and mudstones into slate, and igneous rocks like granite can turn into gneiss.

Can I use shale in my aquarium?

Shale isn’t usually the first stone to come to mind for most when it comes to traditional use in an aquarium. Claystones are a very versatile and adaptable aquascaping material to put in ponds, terrariums, and even freshwater tanks if you know how to use it. …

What kind of rocks can shale be metamorphic to?

Shales can be metamorphosed to slates, schists, and gneiss as metamorphic intensity increases. Describe how the sandstone (sedimentary rock) and quartzite (metamorphic rock) differ visually from each other (aside from color).

Where do slate, phyllite, and gneiss rocks come from?

Beginning with a shale parent, Barrovian metamorphism produces a sequence of metamorphic rocks that goes through slate, and then through phyllite, schist, and gneiss. It can be hard to imagine at first that all these very different looking rocks can come from the same sedimentary parent, but we know that they do.

What happens to the texture of rock during metamorphism?

At the upper end of metamorphism the rock melts and becomes igneous. But the texture of the rock also changes during metamorphism. The rocks become foliated, that is the texture sequence of slaty cleavage to schsitosity, to banded, or the rock sequence slate to phyllite to schist to gneiss.

What causes the foliation of the slate rock?

Foliation in slate is caused by the parallel orientation of platy minerals in the rock, such as microscopic grains of clay minerals and mica. These parallel mineral grain alignments give the rock an ability to break smoothly along planes of foliation.