Begin...! It has always been on, its a contineous process, it doesnt realy stops or begins but just recycles; From, magma - igneous rocks - weathering - erosion - transportation - deposition - accumulation - stratification - cementation - lithification - sedimentary rocks - heating - pressure - stress - deformation - metamorphism - metamorphic rocks - melting - recrystalization - magma, back to igneous rocks. And on and on it goes, repeating just the same process over and over again.
at the beginning of time (see rock cycle) http://en.wikipedia.org/wiki/Rock_cycle
The rock cycle has to start at least with igneous rocks, some of which will be eruptive. We may assume that any 'sedimentary' rocks that arrived as meteors have all been metamorphosed, though there are counter instances. For example the Sudbury Meteor and mineral complex. (Canada).
ANSWER: rock cycle
An example that is not part of the rock cycle would be a volcanic eruption, where molten rock (magma) is expelled from Earth's interior onto its surface. This event is a singular occurrence and does not illustrate the continuous processes of rock formation, transformation, and recycling that make up the rock cycle.
The rock cycle is how one type of rock can be changed into another type of rock.
The rock cycle can begin with the formation of magma from the melting of existing rocks in the Earth's mantle. It ends when rocks are weathered and eroded into sediment, which can then be compacted and cemented together to form new sedimentary rocks, completing the cycle.
The process by which an igneous rock changes to a sedimentary rock in the rock cycle begins with weathering and erosion of the igneous rock, breaking it down into sediments. These sediments are then transported and deposited, where they are compacted and cemented together to form a sedimentary rock over time.
at the beginning of time (see rock cycle) http://en.wikipedia.org/wiki/Rock_cycle
No, the rock cycle does not have to start from the sedimentary rock
The rock cycle and water cycle both are natural.
It is called the Rock Cycle.
The rock cycle has to start at least with igneous rocks, some of which will be eruptive. We may assume that any 'sedimentary' rocks that arrived as meteors have all been metamorphosed, though there are counter instances. For example the Sudbury Meteor and mineral complex. (Canada).
ANSWER: rock cycle
there is no beginning or end of the rock cycle
The Rock Cycle contributes to the formation of rocks : ~ )
No Rock Comes First... its a cycle
a rock cycle is known as a " rock cycle " because the wheel of a bicycle spins at a total 360 degrees and therefore never has an interfierence to when it comes to an end. SO the word cycle was given to a rock cycle because the prosedure never ends.