The most common characteristic of Metamorphic rocks are their foliation….
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What are the four characteristics of metamorphic rocks?
The most common characteristic of Metamorphic rocks are their foliation….
- Classified by texture and composition.
- Rarely has fossils.
- May react with acid.
- May have alternate bands of light and dark minerals.
- May be composed of only one mineral, ex. marble & quartzite.
What is a characteristic of most metamorphic rock?
arrangement, often involving foliation, which is a preferred alignment of unequal grains. or alternating light and dark mineral bands) are characteristic of most metamorphic rocks.
What are three characteristics of metamorphic?
What are three characteristics of metamorphic rock?
- Classified by texture and composition.
- Rarely has fossils.
- May react with acid.
- May have alternate bands of light and dark minerals.
- May be composed of only one mineral ex.
- May have layers of visible crystals.
- Usually made of mineral crystals of different sizes.
What are the characteristics of metamorphic sedimentary and igneous rocks?
Igneous rocks are formed from melted rock deep inside the Earth. Sedimentary rocks are formed from layers of sand, silt, dead plants, and animal skeletons. Metamorphic rocks formed from other rocks that are changed by heat and pressure underground.
What characteristics of metamorphic rocks might be useful for identifying and classifying metamorphic rocks?
As with igneous and sedimentary rocks, metamorphic rocks are classified on the basis of texture (grain size, shape, orientation) and mineral composition.
What are the general characteristics of each classification of metamorphic rocks?
Metamorphic rocks are broadly classified as foliated or non-foliated. Non-foliated metamorphic rocks do not have aligned mineral crystals. Non-foliated rocks form when pressure is uniform, or near the surface where pressure is very low.