Nonfoliated rocks are produced mainly by contact metamorphism, or heat from cooling magma. Contact heat generally results in a finer recrystallization of the parent rock, so little foliation is visible. Quartzite is typically a tough, hard, light-colored rock in which all the sand grains of a sandstone or siltstone have recrystallized into a fabric of interlocking quartz grains. Marble is a softer, more brittle rock in which the dolomite or calcite of the limestone parent rock has recrystallized. Hornfels is a common metamorphic rock formed when basalt or shale is exposed to heat from magma.
Skylar Hagenes
Wiki User
∙ 14y agoNonfoliated rocks are produced mainly by contact metamorphism, or heat from cooling magma. Contact heat generally results in a finer recrystallization of the parent rock, so little foliation is visible. Quartzite is typically a tough, hard, light-colored rock in which all the sand grains of a sandstone or siltstone have recrystallized into a fabric of interlocking quartz grains. Marble is a softer, more brittle rock in which the dolomite or calcite of the limestone parent rock has recrystallized. Hornfels is a common metamorphic rock formed when basalt or shale is exposed to heat from magma.
Wiki User
∙ 10y agoNon-foliated metamorphic rocks are formed due to the effects of temperature on rock masses, thereby resulting to alteration in there composition without much changes on there general structure.
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).
a banded texture
Lack of banding
Nonfoliated metamorphic rocks do not have a layered or banded appearance like foliated rocks. Instead, they exhibit a uniform texture and lack the alignment of minerals seen in foliated rocks. Nonfoliated rocks are typically composed of minerals that have recrystallized without forming distinct layers.
A banded texture
At varying depths under the surface.
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).
nonfoliated rocks
Usually have a rougher texture
Metamorphic rocks that do not exhibit foliation.
a banded texture
Foliated are made of interlocking crystals, non-foliated are not.
Lack of banding
Examples of non-foliated metamorphic rocks are quartzite and marble.
Foliated and nonfoliated are terms used to describe the texture of metamorphic rocks. Foliated rocks have a banded or layered appearance due to the alignment of minerals, while nonfoliated rocks lack this layered structure and have a more uniform texture.
foliated and nonfoliated
Nonfoliated metamorphic rocks do not have a layered or banded appearance like foliated rocks. Instead, they exhibit a uniform texture and lack the alignment of minerals seen in foliated rocks. Nonfoliated rocks are typically composed of minerals that have recrystallized without forming distinct layers.