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Sedimentary rocks are the result of weathering, and erosion of other rocks within the rock cycle and from the death and deposition of organic material.

As the earth did not have an atmosphere as it first began to form, it had no rivers, no weather and no life. Therefore all of the processes required to produce sedimentary rock were absent.

Metamorphic rocks are the result of igneous or sedimentary rocks undergoing heat and pressure which falls short of complete melting.

Therefore igneous rocks would have been required to start the process, as minerals were superheated at great pressure within the molten material that comprised the early earth.

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Related Questions

Igneous rocks formed from lava on Earth's surface?

Extrusive igneous rocks.


Rocks formed from molten earth materials are?

Igneous rocks are formed from molten earth materials such as magma or lava. These rocks can be further classified into intrusive (formed below the Earth's surface) and extrusive (formed on the Earth's surface) based on their origin. Examples of igneous rocks include granite, basalt, and obsidian.


Which came first sedimentary igneous metamorphic rocks?

Metamorphic rock would probably have been the first rock type formed after the initial formation of the first igneous rock. Sedimentary rock formation relies on weathering and erosion, whereas metamorphic rock can be created by heat and pressure. It's likely that rock was metamorphosed before weathering existed .


Are igneous rocks formed only beneath earth's surface?

No. Intrusive igneous rocks are formed beneath the earth's surface when magma cools and extrusive igneous rocks form when lava extrudes from a volcano and cools.


What Forms when molten rocks cools and hardens?

When molten rock cools and hardens, it forms igneous rock. Igneous rocks can be classified as intrusive (formed beneath the Earth's surface) or extrusive (formed on the Earth's surface). Examples of igneous rocks include granite, basalt, and obsidian.


Rocks formed from melted material inside the earth?

Intrusive igneous rocks.


What is igneous rock formed from magma below the earth's surface called?

Igneous rocks that form below the Earth's surface are called intrusive igneous rocks (or plutonic).


What happenes during each method to form intrusive igneous rocks?

Igneous rocks are formed under high heat conditions. Intrusive igneous rocks are formed by the crystallization of magma in the Earth's crust.


What are igneous rocks formed on or near earth surface?

Volcanoes.


What groups of rocks can igneous rocks be formed from?

igneous rocks are formed by magma reaching earths surface and cooling quickly to form extrusive igneous rock.another igneous rock is called intrusive igneous rock. it is formed when magma cools and hardens below the surface.


What are igneous rocks formed at the earths surface called?

Igneous rocks formed at the Earth's surface are called extrusive igneous rocks. They form when magma cools and solidifies quickly on the Earth's surface, resulting in fine-grained or glassy textures. Examples include basalt and rhyolite.


Where are the two types of igneous rocks made?

Intrusive igneous rocks are formed beneath the Earth's surface through the slow cooling of magma, leading to larger crystal sizes. Extrusive igneous rocks are formed at the Earth's surface through the rapid cooling of lava, resulting in smaller crystal sizes.