the rock cycle starts with magma
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The rock cycle can start in multiple ways, but often it begins with the formation of igneous rocks through the cooling and solidification of magma or lava. These igneous rocks can then be weathered and eroded into sediment, which may eventually become sedimentary rocks through compaction and cementation. The sedimentary and igneous rocks can then be transformed into metamorphic rocks through heat and pressure.
The first part of the rock cycle is weathering and erosion. This process involves the breaking down of rocks into smaller pieces through natural forces like water, wind, and ice.
The type of rock that likely formed first to initiate the rock cycle is igneous rock.
The rock cycle is a continuous process that involves the formation, transformation, and reformation of rocks through various geological processes such as weathering, erosion, and heat/pressure.
The stage in the rock cycle where every type of rock can go through directly is the metamorphic stage. This is where rocks are subjected to intense heat and pressure, causing them to change into new types of rocks without needing to go through the other stages of the rock cycle.
The endpoint of the rock cycle is the formation of a new rock from the weathering, erosion, deposition, compaction, and cementation of existing rocks. This process is continuous and cyclical, with rocks transitioning between the three types: igneous, sedimentary, and metamorphic rocks.