Question

Characteristics of igneous rock, sedimentary rock, and metamorphic rock

Answer 1

Igneous Rock = No fossilized deposits can be found in igneous rocks. Any fossils that may have existed deep under the crust are obliterated when they erupt from the Earth's surface due to the heat these rocks generate. The majority of mineral deposits in igneous formations are multiple. Glassy or coarse are both possible. Acids often do not react with these. The mineral deposits are present in different-sized areas.

Sedimentary Rock = Only in places where sediments have been deposited for a long enough period to become compacted and cemented into hard beds or strata can sedimentary rocks be produced. Although they are the most often exposed rocks on the surface of the Earth, they make up a tiny portion of the crust as a whole. They are distinguished by the fact that they were produced in layers.

Metamorphic Rock = As a result of extreme heat and pressure beneath the Earth's crust, metamorphic rocks, which were formerly igneous or sedimentary rocks, have undergone a change. Their texture might be squashed and they are crystalline.

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Answer 2

Characteristics of Igneous Rocks

The igneous form of rocks does not include any fossil deposits. ...

Most igneous forms include more than one mineral deposit.

They can be either glassy or coarse.

These usually do not react with acids.

The mineral deposits are available in the form of patches of different sizes.

Characteristics of Metamorphic Rocks
Metamorphic rocks were once igneous or sedimentary rocks, but have been changed (metamorphosed) as a result of intense heat and/or pressure within the Earth's crust. They are crystalline and often have a “squashed” (foliated or banded) texture. Metamorphic rock falls into two categories, foliated and unfoliated. Most foliated metamorphic rocks originate from regional metamorphism. Some unfoliated metamorphic rocks, such as hornfels, originate only by contact metamorphism, but others can originate either by contact metamorphism or by regional metamorphism. Metamorphic rocks are identified based on grain size, mineral composition, and texture.

Characteristics of Sedimentary Rocks:
Sedimentary rocks can be formed only where sediments are deposited long enough to become compacted and cemented into hard beds or strata. They are the most common rocks exposed on the Earth's surface but are only a minor constituent of the entire crust. Their defining characteristic is that they are formed in layers.