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Molten rock (igneous rock) may be worn down (weather and erosion), turning into pebbles, then due to things such as floods, they can get washed down into a lake where the water is calm. Things such as clay and sand settle down too, as well as other rocks. Over many years (we're talking thousands, millions of years here) all of those things get compressed and eventually the pressure is so great that it forms one big bit of rock. That's why in sedimentary rock you see all the layers, they are all the layers of things like sand, clay and rocks all pressed together. I think that's how a lot of sedimentary rocks are made. Metamorphic rock may also be turned into sedimentary this way.

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Related Questions

Can sedimentary rock be changed into igneous rock?

If it is forced back into the molten layers of the Earth, then yes, it will become igneous rock.


When granite melts and then solidifies it become?

It would become an igneous rock. What type of igneous rock would depend on what it mixed with while molten, and if it solidified at or under the surface.


The kind of rock that cooled from the molten state is?

The type of rock which cooled from the molten state is igneous rock. The other main types of rock are sedimentary and metamorphic.


Can pebbles change into igneous metamorphic and sedimentary rocks?

No. It's too late.Unless it gets eroded itself and eventually forms layers of sediment which may then get turned into rock.


What is igenous intrusion?

When molten rock breaks through sedimentary (compacted sand) rock


What are the two processes that result in a metamorphic rock?

For metamorphic rock to change into igneous rock, it must first melt. Once molten, if its liquid constituents cool and solidify, it has become an igneous rock. Metamorphic rock can become molten by exposure to heat and pressure from depth of burial and compression through tectonic plate subduction, or from close proximity to a magmatic heat source.The metamorphic rock could also become exposed to weathering, erosion, and subsequent deposition, compaction and cementation which would lead to the formation of sedimentary rock. Once again, the sedimentary rock could become molten by exposure to heat and pressure from depth of burial through tectonic plate subduction, or from close proximity to a magmatic heat source. Once molten, if its liquid constituents cool and solidify, it has become an igneous rock.Igneous or sedimentary rock


Is obsidan a sedimentary rock?

No. It is an igneous rock, meaning it cooled from molten rock. Specifically, obsidian is volcanic.


What type of rock can become sedimentary?

Any type of rock, igneous, metamorphic or sedimentary, can become eroded and re-deposited and cemented together to become a new sedimentary rock.


What types of rocks can become sedimentary rock?

Any type of rock, igneous, metamorphic or sedimentary, can become eroded and re-deposited and cemented together to become a new sedimentary rock.


Are magma and lava sedimentary rocks?

No. Magma and lava are molten rock. When the cool they form igneous rock.


What make up and sedimentary metamorphic and igneous?

sedimentary, erosion products and/or organic matter that has become glued together over time into rockmetamorphic, sedimentary or igneous rock that has been changed in form by very high temperature and pressure while deep undergroundigneous, solidified by cooling from molten rock


Is it possible for a sedimentary rock to be changed to become a new sedimentary rock?

Yes, sedimentary rocks can undergo processes such as compaction, cementation, and recrystallization to become a new sedimentary rock. These processes can alter the original sedimentary rock's texture, composition, and appearance without undergoing metamorphism.