An igneous rock at the earth's surface was once a long way under the earth in a magma chamber. Often the expression at the surface was a volcano, spewing out volcanic rock. The term for such activities on a large scale is called an orogeny. As time has gone by, there will have been uplift of the earth due to compression of the tectonic plates (there may have been many other geological activities in the meantime). During uplift there will be erosion due to weathering and tectonic activity. Eventually the magma chamber becomes exposed at the surface. these chambers can be very extensive, covering many hundreds of kilometres. The igneous rock inside the chambers are subject to the same weathering forces as the strata above them, once exposed. The rock breaks down (erodes), and tumbles due to gravity, to the lowest point possible, usually low areas of the ocean, off the continental shelves (but not always). Here it sits and becomes compacted with time due to accumulation of sediment above it, and often lowering due to tensions (pulling apart) of the tectonic plates.. As time goes by there will be another phase of uplift (among other geological activities that occur with time) and the result is a sedimentary rock exposed at the surface, with an igneous signature, usually called greywacke or sandstone. The different layers (strata) of the rock tell a story of the history of the rock. Geochemical analysis can pinpoint closely where the rock originated before being turned into a sedimentary rock. Fossils can provide relative dates of when the sedimentary rock was created, and radiometric dating can give accurate dates of when both the sedimentary and the igneous rock was created.
Sedimentary rock is formed when igneous rocks weather to sediments, then the sediments compact to sedimentary rock. When Igneous rocks are subjected to heat and pressure but do not melt, they become metamorphic rock. When igneous rocks are melted they make other igneous rocks.
It doesn't have to. Most rocks exposed at the surface will erode and become sedimentary, but igneous rock that is underground can be remelted and become another igneous rock, or can become metamorphic.
Two of the most common fates of igneous rocks are to become sediment (and later sedimentary rocks) or to become metamorphic rocks.
Metamorphic rocks are formed from existing rocks that undergo changes in temperature, pressure, or chemical reactions due to processes like heat and pressure from deep within the Earth's crust. These existing rocks can be sedimentary, igneous, or even other metamorphic rocks that get transformed into a new type of rock.
Yes and No An igneous rock can not just "become" a sedimentary rock, it first has to be weathered and eroded at the surface of the Earth. The debris produced is then washed away as sediment and deposited elsewhere. This deposited sediment then gradually hardens into a new rock which is a sedimentary rock. Thus until igneous rocks are exposed in outcrop, they remain as igneous rocks.
Igneous rocks are a "finished product". They do not become sedimentary rock - though sedimentary rocks, with heat and pressure can become metamorphic rocks.
Sedimentary rock is formed when igneous rocks weather to sediments, then the sediments compact to sedimentary rock. When Igneous rocks are subjected to heat and pressure but do not melt, they become metamorphic rock. When igneous rocks are melted they make other igneous rocks.
Yes, after erosion and deposition.
No, any type of rock can become sedimentary rock, because sedimentary rock refers to any rock that has been eroded, and pressure has been applied to it so as to solidify it from a granular state.
No. There some very old igneous rocks to be found also it is possible for an igneous rock to become a metamorphic rock. Further, igneous rocks can not be turned into a sedimentary rocks directly. They must first be weathered and eroded and only then their detritus and remnants can be deposited as a new sedimentary deposit.
Any type of rock, igneous, metamorphic or sedimentary, can become eroded and re-deposited and cemented together to become a new sedimentary rock.
All rocks can become igneous rocks. With weathering and erosion, an igneous rock can become a sediment. Then with compaction and cementation, it can become a sedimentary rock. With heat and pressure, it will turn into a metamorphic rock. Or it can melt and turn into an igneous rock. There are many more ways rocks can change types... that is the rock cycle.
No. Igneous, sedimentary, and metamorphic rocks are three different categories of rock.
It doesn't have to. Most rocks exposed at the surface will erode and become sedimentary, but igneous rock that is underground can be remelted and become another igneous rock, or can become metamorphic.
Igneous Rocks,Sedimentary Rocks,Metamorphic Rocks.
Two of the most common fates of igneous rocks are to become sediment (and later sedimentary rocks) or to become metamorphic rocks.
because sedimentary rocks are on the top layer, while igneous rocks are were the magma is