banded rocks
The description you provided is a characteristic of foliated rocks, such as slate or schist. These rocks have grains that align in flat layers due to pressure and heat during formation, giving them a layered or swirled appearance.
Rocks with visible layers and elongated mineral grains are called foliated rocks. These rocks form under high pressure and temperature conditions, causing minerals to align in layers or elongate in a specific direction. Examples include schist and gneiss.
Rocks with grains arranged in parallel layers are called sedimentary rocks. These rocks form when sediment such as sand, mud, or organic material is deposited and compacted over time. Examples include sandstone and shale.
A rock that has interlocking grains with no specific pattern is known as a non-foliated rock. Examples include quartzite and marble. These rocks form from the recrystallization of minerals under high pressure and temperature conditions, resulting in interlocking grains without a preferred orientation.
Metamorphic rocks with a non-foliated texture show that the metamorphic changes involved did not result in the development of a preferred alignment of mineral grains. This indicates that the rocks were subjected to directed pressure or high temperatures without causing the minerals to align into layers. Examples of non-foliated rocks include marble and quartzite.
The description you provided is a characteristic of foliated rocks, such as slate or schist. These rocks have grains that align in flat layers due to pressure and heat during formation, giving them a layered or swirled appearance.
Sediment rocks
Rocks with visible layers and elongated mineral grains are called foliated rocks. These rocks form under high pressure and temperature conditions, causing minerals to align in layers or elongate in a specific direction. Examples include schist and gneiss.
The descriptive term is foliated.
Rocks with grains arranged in parallel layers are called sedimentary rocks. These rocks form when sediment such as sand, mud, or organic material is deposited and compacted over time. Examples include sandstone and shale.
sedimentary rocks have layers showing the deposition of sediment at different time periods.sedimentary rocks consists of lots of small grains. these grains maybe weakly and together so the rocks are often porous and maybe soft and crumbly.sedimentary rocks often have fossils trapped with in them.sedimentary rocks consist of layers of lots of small particals.
sedimentary rocks have layers showing the deposition of sediment at different time periods.sedimentary rocks consists of lots of small grains. these grains maybe weakly and together so the rocks are often porous and maybe soft and crumbly.sedimentary rocks often have fossils trapped with in them.sedimentary rocks consist of layers of lots of small particals.
A schistose texture.
Magma that has fallen out a volcano to make sediments through metamorphism.
A rock that has interlocking grains with no specific pattern is known as a non-foliated rock. Examples include quartzite and marble. These rocks form from the recrystallization of minerals under high pressure and temperature conditions, resulting in interlocking grains without a preferred orientation.
Metamorphic rocks such as marble and quartzite are said to be non-foliated because their mineral grains are not arranged in parallel layers or bands like in foliated rocks such as slate or schist. This lack of alignment gives non-foliated rocks a more uniform texture and appearance.
Sedimentary rocks are formed from sediments over time. Individual grains are deposited and then squashed together to form larger rocks.