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Igneous rocks can be either intrusive, like granite or extrusive (erupt and then solidify at the surface) like basalt. Igneous rocks are usually homogeneous large bodies without planes of weakness, such as those found in sedimentary or metamorphic rocks (like bedding or foliation).
Chemical and physical weathering plus erosion at the surface of the earth are the processes which form most land forms. Water and/or biota are usually required by these processes. Because an igneous rock is usually a solid mass of inter grown minerals, with little or no pore space (except for pumice or other volatile rich eruptions) they are usually hard for water or biota to penetrate. For this reason they are more resistant than other rock types to weathering and therefore form prominent features in the landscape.

A good example of this is terrain inversion. If a basalt flow erupts it flows to the lowest pointy in the land scape, like a valley. Is this is in a sedimentary area, where the surrounding rocks are more easily eroded, the basalt will be the more resistant rock type. As the rocks are eroded around it, the basally which was at the lowest point in the landscape becomes the highest point, hence the term terrain inversion.

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Why do igneous rocks tend to form long-lasting landforms?

Igneous rocks tend to form long-lasting landforms because they are typically hard and durable, resulting from the solidification of molten magma or lava. Their crystalline structure and resistance to weathering and erosion allow them to withstand environmental forces over extended periods. Additionally, many igneous formations, such as volcanic mountains and intrusive rock formations, are often uplifted and exposed, further contributing to their longevity in the landscape.


When molten rocks cools what rocks form?

igneous rocks


Can metamorphic rocks can form from igneous but not from sedimentary rocks?

Metamorphic rocks can form from both igneous and sedimentary rocks


Can Metamorphic rocks can form from igneous but not from sedimentary rocks.?

Metamorphic rocks can form from both igneous and sedimentary rocks


What are igneous rocks that form on earth surface?

igneous rocks that form on earth's surface


What are igneous rocks that form over the surface?

Rhyolititcen rocks.


Magma cools and solidifies to form what rocks?

igneous rocks


Does sedimentary rock form igneous rock?

Yes it can form an igneous rocks as because of pressure it may melt and form into igneous rocks.


Which igneous rocks form below earth's surface?

Igneous rocks that form below the Earth's surface are called intrusive igneous rocks. Examples include granite, diorite, and gabbro. These rocks cool and solidify slowly, allowing large crystals to form.


What do you call rocks that have been formed from the hot molten material within the earth's crust that has cooled and hardened?

Igneous rocks are formed by the solidification of molten materials.


What rocks form from melted rocks?

Igneous rocks.


Igneous rocks form by what?

Igneous rocks are formed as the result of cooling magmas.