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What is the definition of non-foliated metamorphic rocks?

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Nonfoliated metamorphic rocks are formed around igneous intrusions where the temperatures are high but the pressures are relatively low and equal in all directions (confining pressure). read more

Both foliated and non-foliated metamorphic rocks are formed deep under the earth's surface over millions of years by the combination of heat, pressure and chemical processes. The amount of heat and pressure determines the final state of metamorphic rocks, as does their specific mineral contents. read more

Nonfoliated metamorphic rocks are formed around igneous intrusions where the temperatures are high but the pressures are relatively low and equal in all directions (confining pressure). The original minerals within the rock recrystallize into larger sizes and the atoms become more tightly packed together, increasing the density of the rock. read more

Unlike non-foliated metamorphic rocks, which have a marbled appearance and form under uniform pressure, foliated metamorphic rocks form from uneven amounts of pressure. The areas of greatest pressure force minerals to line up, forming the layered bands throughout the rock. read more

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Foliated vs. Non-Foliated Metamorphic Rocks - ThingLink
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Further Research

Foliated Metamorphic Rocks
www.mineralogy4kids.org

Nonfoliated Metamorphic Rocks
mineralogy4kids.org