Sedimentary rock metamorphosis can occur very rapidly ( in geologic terms) as is the case with skarn, a contact metamorphic rock, or quite slowly as is the case with slate, which has proceeded through metamorphism in stages from mud to mudstone to shale to slate, a process taking millions of years.
Could be fairly swift if the metamorphic rock is close to melting and close to an erupting volcanic pipe that leads to the surface where the molten material would solidify quickly.
I don't know a specific time but I can tell you that it is not a fast working progress and takes a lot of time for an igneous rock to change to a metamorphic rock.
geometry
All rocks on Earth take part in the "Rock Cycle". For an igneous or metamorphic rock to change into a sedimentary rock, they must undergo weathering and erosion by wind, water, and/or ice. The broken down pieces of rock (sediments) settle into layers that form a sedimentary rock.
Most metamorphic rock processes involve very long periods of time. The exception would be metamorphic rocks formed by meteorite impacts.
Crystals are the form that minerals take upon solidification. Metamorphic is a term used to describe a rock that undergoes a chemical or mineral transformation from heat or pressure. New crystals can form in rock undergoing metamorphosis, but the crystals themselves are not considered metamorphic.
Metamorphic Rock Metamorphism means to change form; this is exactly what metamorphic rocks do. This paper will take a look at the Earth's rock cycle to examine exactly where the metamorphic rock fits into it. It will also look at how metamorphic rocks are formed and the relationship between metamorphic rocks and igneous rock and sedimentary rocks. This paper will examine the geological characteristics and materials of metamorphic rocks, and examine some examples of metamorphic rocks and will describe mineral composition of some examples and explain its economic uses. The Rock Cycle The rock cycle helps people to understand the starting point of the igneous, sedimentary, and metamorphic rocks. In addition to explaining how each of the rocks are connected through the process. The rock cycle explains to us how the Earth assists in changing one type of rock into another type of rock. The process begins when magma, found from beneath the Earth's surface or from a volcano, cools and crystallizes. This process forms rocks called igneous rocks. When an igneous rock is exposed to weathering and erosion and compacted by the weight of the groundwater, which is otherwise known as lithification, it creates a sedimentary rock. When sedimentary rocks are buried deep within the Earth and evolve into mountains or are exposed to extreme pressure and intense heat it will then turn into the last cycle of rock, the metamorphic rock. Metamorphic rocks can even evolve from other metamorphic rocks. How Metamorphic Rocks Are Formed Within the Rock Cycle Metamorphic rocks are created when they are exposed to extreme heat, pressure, and chemicals. Rocks are usually exposed to extreme heat, pressure, and chemicals at the same time. Metamorphism occurs in one of two situations, contact metamorphism or regional metamorphism. Contact metamorphism occurs when a rocks experience a rise in temperature when it is exposed to magma. Heat is the most important source of metamorphism because... [continues]
geometry
Heat and pressure
Very high, sustained temperatures are required as the metamorphic rock must melt down and then re-solidify
No. Metamorphic rock froms from processes that take place in the solid state. Rocks that form from molten material are igneous.
No one really know what rock came first but I would assume it would be Igneous because it came from volcanoes and those have been around a long time. Sedimentary rocks take millions of years to form, and metamorphic take long as well. The best answer would definitely have to be igneous.
All rocks on Earth take part in the "Rock Cycle". For an igneous or metamorphic rock to change into a sedimentary rock, they must undergo weathering and erosion by wind, water, and/or ice. The broken down pieces of rock (sediments) settle into layers that form a sedimentary rock.
lava dries air smoothens it and water confines it
there are several ways such as heat & pressure, melting, chemical weathering, compression, compaction & cementation, but it depends on the kind of rock it is for what process it has to go through. -Cutegirl99
10,000,000+ years
New rocks are formed, Igneous Rock, Sedimentary Rock, and Metamorphic Rock. It will take over a million years to complete the rock cycle, then it will start all over again.
Most metamorphic rock processes involve very long periods of time. The exception would be metamorphic rocks formed by meteorite impacts.
Crystals are the form that minerals take upon solidification. Metamorphic is a term used to describe a rock that undergoes a chemical or mineral transformation from heat or pressure. New crystals can form in rock undergoing metamorphosis, but the crystals themselves are not considered metamorphic.