Rock metamorphosis, or metamorphism, is the change in the crystalline components, chemical composition, or structure of rocks from exposure to intense pressure, heat, or exchange of ions through heated solutions. Metamorphosis of rock usually occurs deep below the Earth's surface, but could also occur from meteor impact, or close contact with a magmatic intrusion.
Metamorphism occurs in rock without melting. Mineral components can recrystallize, form new minerals, and become aligned directionally in physical appearance. Through metamorphosis, one type of rock becomes another type of rock. Sandstone can become quartzite, limestone can become marble, shale can become slate, and so on.
High pressures and temperatures can cause hydrous minerals to change to non-hydrous minerals like garnet. Rounded mineral crystals can become flattened, and minerals that grow in the stressed rock can display a preferred orientation that is perpendicular to the direction of the stress and display a characteristic known as foliation, with distinct banding or platyness. In rocks such as quartzite and limestone, where the minerals are relatively stable along a broad range of temperatures and pressures, the mineral crystals simply become larger. In cases where the metamorphism occurs because of proximity to hydrothermal fluids, a chemical exchange will take place, changing the original composition of the host rock.
Metamorphic rocks are formed from a protolith, or parent rock, which can be of any rock type (igneous, sedimentary, or metamorphic). The parent rock is exposed to varying degrees of pressure and/or heat either from depth of burial, exposure to a plutonic body of intense heat, or from pressures resulting from the collision of tectonic plates. The heat and/or pressure can transform the minerals inside the parent rock to new minerals, cause recrystallization of existing minerals, or reorganize the existing minerals into bands and layers. All of these processes take place without any melting of the parent rock.
Rocks being under tons of heat and pressure leads to the formation of metamorphic rock.
Heating, pressurization, deformation, recrystallization, and metamorphism.
heat and pressure
Heat and pressure lead to the formation of metamorphic rocks.
the origin of lead ore is contact metamorphic origin
there are not three factors. Metamophic rocks are formed by heat and pressure. the heat sort of melts it slowly while the pressure compacts it. For an animation of the formation go to http://www.classzone.com/books/earth_science/terc/content/visualizations/es0607/es0607page01.cfm?chapter_no=visualization :)
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
how has nuclear fusion led to the formation of all the other chemical elements
the anse to the hopitid cola depositon colsa
Heat and pressure lead to the formation of metamorphic rocks.
The process that could directly lead to the formation of pumice rock is volcanice eruptions (explosive eruption of lava from a volcano).
the origin of lead ore is contact metamorphic origin
Darwin proposed that, over a long period of time, naturall selection could lead to the formation of new species.
Explosive eruption of lava from a volcano
Erosion would most likely lead to deposition, compaction, and cementation, processes involved in the creation of sedimentary rock.
Erosion
No it does not. They can only be converted from Sedimentary to Metamorphic be heat and pressure. Metamorphic can also convert to different higher great as the temperature and pressure increases. examsples are schist to gneiss.
Freeze-thaw weathering occurs when water seeps into cracks in rocks, freezes, expands, and breaks the rock apart. Over time, this process weakens the rock, causing it to fragment and break into smaller pieces. The repeated cycles of freezing and thawing can lead to the formation of scree slopes as the broken rock fragments accumulate at the base of steep slopes.
Galena, lead sulfide, is a mineral, not a rock.
cumulonimbus clouds.Unstable atmospheric conditions lead to the formation of lightning and thunder in cumulonimbus clouds.