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Some extrusive rocks such as lava and ejecta form in minutes. Stalactites may form in a few tens of years, but commonly longer. Other rocks may take millions of years, and may have to be recycled through metamorphism to attain their final form.

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Related Questions

How long does it take to form sand?

It takes thousands of years to form because the rocks have to break down into little pieces.


Why does it take thousands or millions of years to create sedimentary rocks when it may only take minutes to form igneous-?

It takes a long time for sedimentary rocks because the rocks have to break down in small pieces. The rocks are from the surfaces or the crust.


What takes long to form?

rocks


What takes long time to form?

rocks


How long does it take for each type of rock to form?

Igneous rocks can form quickly in days to months from cooling magma, sedimentary rocks can take hundreds to millions of years from weathering and deposition of sediments, and metamorphic rocks can form over millions of years from existing rocks under high heat and pressure.


How long does it take for rocks to decompose?

It take 1 million -5million


Why sedimentary rocks could not have been the first rocks on earth?

Sedimentary rocks form from the accumulation of sediment such as sand, silt, or clay. For sedimentary rocks to form, there must be pre-existing rocks that weather and erode to produce sediment. Therefore, sedimentary rocks could not have been the first rocks on Earth as they require the presence of older rocks to form.


How rocks change form is known as the what?

The process through which rocks change form is known as the rock cycle. It involves the transformation of rocks from one type to another over long periods of time through processes such as weathering, erosion, and metamorphism.


Did the sandstone of red rocks amphitheater take 12 million years to form?

no


What combines minerals to form rocks?

It doesn't necessarily matter what the minerals are, as long as they form from cooling magma or lava. Igneous rocks are formed by the solidification of cooled magma (molten rock). They may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.


How soil form from rocks?

Rocks form soils due to weathering by wind, sun, rain and ice.


Do sedimentary rocks just form under water?

No, it can form on land also. Just as long as they go through lithification