The main way metamorphic rocks are classified is by the presence or absence of foliation. Foliated metamorphic rocks are distinguished by the type of foliation they exhibit. Types of foliation textures, include: slaty, phyllitic, schistose, and gneissi.
Non-foliated metamorphic rocks generally do not have distinct layering.
Because layers from foliated rocks came from the same direction and nonfoliated rocks came from several directions
Neither. Foliation is a term used in assesing metamorphic rocks, not igneous rocks such as rhyolite.
Metamorphic rocks are rocks that have their grains arranged in parallel layers or bands. Foliated rocks are formed under great pressure and heat, and when they cool they have a banded grain pattern.
The main way metamorphic rocks are classified is by the presence or absence of foliation. Foliated metamorphic rocks are distinguished by the type of foliation they exhibit. Types of foliation textures, include: slaty, phyllitic, schistose, and gneissi.
The alignment of minerals to form a planer fabric. This may give the rock a banded appearance.
Foliated rocks are metamorphic rocks that look like they have layers or the appearance of layers. Non-foliated rocks are metamorphic rocks without any foliation.
Non-foliated metamorphic rocks generally do not have distinct layering.
Foliated are made of interlocking crystals, non-foliated are not.
Foliated--those exhibiting layering (gneiss, slate, schists), and non-foliated--without layers (marble, quartzite).
Foliated rocks have layers in them. We often refer to the layers as Banding.
"Foliated" rocks are usually metamorphic rocks like phyllite, slate, schist, and gneiss.
Metamorphic rocks with a layered or banded look are referred to as foliated.
non-foliated.
Well foliated rocks have layers and non foliated does not have layers.
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