How can rock change from sedimentary to a metamorphic rock to igneous rock?

Answer 1

A short answer is that igneous may undergo crystalline restructuring and change under significant heat and pressure (though not enough to completely liquefy it). These changes occur underground and eventually the rock may be considered metamorphic.

Igneous rocks that are exposed may be weathered and small particles deposited at riverbeds or ocean bottoms. After a long enough time, in the right conditions, these fragments bond together (much like concrete) to form sedimentary rock.

Answer 2

Sedimentary rock is formed when sediment (sand, mud, clay, and other small rock particles) is transported by wind or water to a point of rest, where it is compressed to extreme pressures from further overlying sediments over long periods of time and the gaps between the small particles are cemented together by mineral solutions. The world's great fossil finds are made in sedimentary rock. Exposed sedimentary rock undergoes weathering by a number of means, and the resultant particles may find a point of quiet deposition and become new sedimentary rock. Igneous rock is nothing more, and nothing less, than cooled magma, either extruded or erupted on the surface (extrusive igneous rocks), or slowly cooled underground (intrusive igneous rocks). You do not find fossils within igneous rockbecause organic matter would be unlikely to survive the temperatures of molten rock. Igneous rocks eventually weather into smaller particles which can be transported by nature and deposited in a sedimentary basin to eventually form sedimentary rock. Igneous rock can also be subducted at plate boundaries, remelted, and become a new igneous rock. Metamorphic rock used to be sedimentary or igneous (or even a different kind of metamorphic), but has changed its appearance and/or mineral composition over time through extreme heat and pressure. Metamorphic rock can be formed from heat and pressure at depth, through pressures from continental collisions, or from contact of a parent rock with an igneous intrusion (called contact metamorphism). Often this kind of rock looks layered as the minerals flatten and group together at right angles to the directional force of pressure, in a banding called 'foliation'. Fossils within metamorphic rock are extremely rare, as the heat and pressure will usually remove the fossil record from previously sedimentary rock. Metamorphic rock may melt and become igneous rock, or it may become exposed at the surface through erosion or uplift. Once exposed, it is subject to weathering and may eventually become sedimentary rock.

Answer 3

Well first the sediments settle on bottom of lakes then get pushed and pushed down until they are in below the lake and it gets so hot so they get pushed up a volcano and then they are lava rocks so they fal and trickle off of the valcano side and land in the lake and start all over again

Answer 4

Metamorphic rocks were once sedimentary or igneous rocks that have been changed (metamorphosed) by squashing and heating them.

They can change back into sedimentary rocks ONLY by being exposed at the Earth's surface then being weathered and eroded. The particles formed are then be redeposited to form new sedimentary rocks.

To form an igneous rock out of a metamorphic rock you need have conditions in the Earth that will raise the temperature high enough to form a melt out of the rocks. This melt (magma) can then form new igneous rocks.

Answer 5

There are many ways in which they are connected through the rock cycle:

• If any rock is melted, when it cools it becomes Igneous when cooled
• If a rock is heated to the extent that partial recrystallisation occurs, it is metamorphic (though little change is seen in Igneous rocks)
• The link is that country rock near an igneous intrusion undergoes metamorphosis due to the heat from the igneous intrusion causing partial melting (as an example).
• All heat for metamorphosis is received from igneous rocks.

Answer 6

first the igneous rock would be weathered, eroded then deposited into sedimentary. The sedimentary rock would then heat up and become metamorphic.