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Change of minerals in pre-existing rocks without melting into liquid magma
Metamorphism is the transformation of existing rock (the protolith) to rock with a different mineral composition or texture. Metamorphism usually takes
Metamorphism
Shock-wave related deformation and heating of rocks during collisions
Shock metamorphism or impact metamorphism describes the effects of shock-wave related deformation and heating during impact events. The formation of similar
Shock_metamorphism
Topics referred to by the same term
Look up metamorphism in Wiktionary, the free dictionary. Metamorphism, in geology, is the solid state recrystallisation of rocks under environmental forces
Metamorphism_(disambiguation)
Topics referred to by the same term
concert tour by South Korean singer Taemin Metamorphosis (disambiguation) Metamorphism, the change of minerals in rocks Metamorphic rock, rock subjected to
Metamorph_(disambiguation)
Rock that was subjected to heat and pressure
processes that help bring about metamorphism. However, metamorphism can take place without metasomatism (isochemical metamorphism) or at depths of just a few
Metamorphic_rock
1st episode of the 2nd series of Space: 1999
"The Metamorph" is the first episode of the second series of Space: 1999 (and the twenty-fifth overall episode of the programme). The screenplay was written
The_Metamorph
Easily split medium-grained metamorphic rock
during regional metamorphism accompanying the process of mountain building (orogeny) and usually reflects a medium grade of metamorphism. Schist can form
Schist
these minerals to form. Buchan metamorphism has the facies series greenschist-amphibolite-granulite Barrovian metamorphism has the same facies series but
Metamorphic_series
Type of insect development
Hemimetabolism or hemimetaboly, also called partial metamorphosis and paurometabolism, is the mode of development of certain insects that includes three
Hemimetabolism
Aluminosilicate mineral
regional metamorphism at depth. By contrast, the metamorphic zones surrounding the Fanad pluton of Ireland, which formed by contact metamorphism at a shallower
Kyanite
rocks deformed, the pressures and temperatures of metamorphism, and how the deformation and metamorphism varied as a function of space and time. It has been
Ultra-high-pressure metamorphism
Ultra-high-pressure_metamorphism
Type of metavolcanic rock
temperature conditions which produce this type of metamorphism. List of minerals List of rock types Metamorphism "Blueschist". About.com Education. Archived
Blueschist
Ability to physically transform in mythology, folklore and speculative fiction
In mythology, folklore and speculative fiction, shapeshifting is the ability to physically transform oneself through unnatural means. The idea of shapeshifting
Shapeshifting
Type of sedimentary rock
reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually related to tectonic compression within orogenic belts. Sandstones
Sandstone
Crustal metamorphism with temperatures exceeding 900 °C
In geology ultrahigh-temperature metamorphism (UHT) is extreme crustal metamorphism with metamorphic temperatures exceeding 900 °C. Granulite-facies rocks
Ultra-high-temperature metamorphism
Ultra-high-temperature_metamorphism
Changes of rock due to pressure and heat near a subduction zone
metamorphism at low thermal gradients of <10 °C/km, and the other is amphibolite to granulite facies series that was produced by rifting metamorphism
Subduction_zone_metamorphism
Chemical alteration of a rock by hydrothermal and other fluids
classical metamorphism which is the in-situ mineralogical change of a rock without appreciable change in the chemistry of the rock. Because metamorphism usually
Metasomatism
Hard, coarse-grained, hydrothermally altered metamorphic rocks
experience a transition from early metamorphism—which forms hornfels, reaction skarns, and skarnoids—to late metamorphism, which forms relatively coarser
Skarn
sillimanite Buchan metamorphism occurs often in extensional settings, for example at rift basins. In contact metamorphism (metamorphism caused by high temperatures
Metamorphic_zone
Repetitive layering in metamorphic rocks
Often this foliation is associated with diagenetic metamorphism and low-grade burial metamorphism. Foliation may parallel original sedimentary bedding
Foliation_(geology)
Metamorphic rock type
Amphibolite frequently forms by metamorphism of mafic igneous rocks, such as basalt. However, because metamorphism creates minerals entirely based upon
Amphibolite
Common high-grade metamorphic rock
subjection of the protolith (the original rock material that undergoes metamorphism) to extreme shearing force, a sliding force similar to the pushing of
Gneiss
Clade of insects
structure and behaviour. This is called holometabolism, or complete metamorphism. The Holometabola constitute the most diverse insect superorder, with
Holometabola
2023–24 concert tour by Taemin
Metamorph was the fifth concert tour by South Korean singer Taemin, in support of his fourth Korean EP, Guilty. It began on December 16, 2023, at the
Metamorph_(tour)
Metamorphic rock
under the lowest temperatures and pressures usually produced by regional metamorphism, typically 300–450 °C (570–840 °F) and 2–10 kilobars (29,000–145,000 psi)
Greenschist
Mixture of metamorphic rock and igneous rock
form under extreme temperature and pressure conditions during prograde metamorphism, when partial melting occurs in metamorphic paleosome. Components exsolved
Migmatite
Formation of mountain ranges
vertical motions of portions of continents without much associated folding, metamorphism, or deformation) can create local topographic highs. Eventually, seafloor
Orogeny
Rock formation in the Appalachian Mountains
northwest-directed displacement; in the Great Smoky Mountains foothills, lower-grade metamorphism preserves many preexisting structures that help constrain Taconic and
Ocoee_Supergroup
Transitional concept of geologic time
chemically to form a metamorphic rock, through the process of metamorphism. Regional metamorphism refers to the effects on large masses of rocks over a wide
Rock_cycle
Planar fabric in rock
feature that develops as a result of deformation and metamorphism. The degree of deformation and metamorphism along with rock type determines the kind of cleavage
Cleavage_(geology)
Hard, non-foliated metamorphic rock
is subjected to the great heat and pressure associated with regional metamorphism, the individual quartz grains recrystallize along with the former cementing
Quartzite
Type of metamorphic rock
Marble is a rock resulting from metamorphism of sedimentary carbonate rocks, most commonly limestone or dolomite. Metamorphism causes variable re-crystallization
Marble
Talc-bearing metamorphic rock
of the magnesium-rich mineral talc. It is produced by dynamothermal metamorphism and metasomatism, which occur in subduction zones, changing rocks by
Soapstone
Naturally occurring mineral aggregate
heats the surrounding rock causes contact metamorphism—a temperature-dominated transformation. Pressure metamorphism occurs when sediments are buried deep
Rock_(geology)
Pressure-temperature diagram of mineral stability ranges
Buchan metamorphism". Journal of Metamorphic Geology. 36 (6): 667–690. doi:10.1111/jmg.12302. Bowen, Norman (1940). "Progressive Metamorphism of Siliceous
Petrogenetic_grid
Graphical representation of the pressure-temperature history of a metamorphic rock
Peak metamorphism: the maximum temperature reached throughout the metamorphic history. Retrograde (post-peak) metamorphism: the metamorphism occurred
Pressure-temperature-time path
Pressure-temperature-time_path
Swiss mineralogist and petrologist
Swiss Federal Institute of Technology (now ETH Zurich) . He studied metamorphism and produced an influential classification of metamorphic rocks. Grubenmann
Ulrich_Grubenmann
Austroalpine nappes and the southern Alps did not experience high grade metamorphism in the major Alpine phases in the Cenozoic. Any high grade metamorphic
Geology_of_the_Alps
Second planet from the Sun
Justin; Weller, Matthew; Gorce, Jennifer; Clark, Nolan (25 March 2025). "Metamorphism of Venus as driver of crustal thickness and recycling". Nature Communications
Venus
Group of metamorphic rocks
non-aligned crystals with platy or prismatic habits, characteristic of metamorphism at high temperature but without accompanying deformation. The term is
Hornfels
Metamorphic rock unit in Canada
and record of more than a billion years (>4.0–2.9 Ga) of magmatism and metamorphism. The Acasta Gneiss Complex is exposed in a set of anticlinoriums within
Acasta_Gneiss
Amphibole, double-chain inosilicate mineral
composition Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2. Tremolite forms by metamorphism of sediments rich in dolomite and quartz, and occurs in two distinct
Tremolite
Class of high-grade medium to coarse grained metamorphic rocks
metamorphic rocks that have experienced high-temperature and moderate-pressure metamorphism. They are medium to coarse–grained and mainly composed of feldspars sometimes
Granulite
Type of foliated metamorphic rock
foliated metamorphic rocks, it represents a gradation in the degree of metamorphism between slate and schist. The minute crystals of graphite, sericite,
Phyllite
Group of phyllosilicate minerals
meaning "green", in reference to its color. Greenschist, formed by metamorphism of basalt or other low-silica volcanic rock, typically contains significant
Chlorite_group
Recursive function
deforestation, a program optimization strategy. A related type of function is a metamorphism, which is a catamorphism followed by an anamorphism. A hylomorphism h
Hylomorphism (computer science)
Hylomorphism_(computer_science)
An index mineral is used in geology to determine the degree of metamorphism a rock has experienced. Depending on the original composition of and the pressure
Index_mineral
Science museum in Warsaw, Poland
of Poland, Fossilized World, Magmatism, Sedimentation and Diagenesis, Metamorphism, Geological History of Poland 1919-1999. The "Material of the Earth"
Geological Museum of the State Geological Institute
Geological_Museum_of_the_State_Geological_Institute
Mesoproterozoic mountain-building event
Granulite facies metamorphism began around 1.15 Ga and continued for about 150 Ma after the onset, however the continuity of the metamorphism cannot be determined
Grenville_orogeny
Geological group of sedimentary rock formations
Heminectere rushtoni. The sequence was affected by low-grade regional metamorphism and deformation associated with the Acadian Orogeny, causing the dominant
Skiddaw_Group
Environment between fallen snow and terrain
good insulating properties; however as time goes on, due to destructive metamorphism, the insulating property of the snowpack decreases, because the air spaces
Subnivean_climate
Geological process at tectonic plate boundaries
silicate-carbonate metamorphism. However, evidence from thermodynamic modeling has shown that the pressures and temperatures necessary for this type of metamorphism are
Subduction
Geological feature in Australia
a neocraton. There are two high temperature low pressure regions of metamorphism. The Wagga Omeo Metamorphic Belt is a large region in the Central Lachlan
Lachlan_Fold_Belt
Archean greenstone belt in southwestern Greenland
All layers, including those bordering the stromatolites, experienced metamorphism and deformation after deposition, and temperatures not exceeding 550 °C
Isua_Greenstone_Belt
Mineral, semi-precious stone
hessonite and tsavorite. Although garnets are often associated with metamorphism, they can also occur in volcanic rocks on rare occasions. The word "garnet"
Garnet
Silicate mineral
formations of the Lake Superior region and the Labrador Trough. With prograde metamorphism cummingtonite and grunerite morph to members of the olivine and pyroxene
Cummingtonite
Exposed impact crater in Libya
style of deformation, and (3) indications of the high-pressure shock metamorphism of quartz grains. At both structures, they found a lack of meteorite
BP_Impact_Structure
Metamorphic rock
plates. It is usually formed by low-grade regional metamorphism of mudrock. This mild degree of metamorphism produces a rock in which the individual mineral
Slate
Formation of serpentinite by hydration and metamorphic transformation of olivine
boundaries. Serpentinization is a form of low-temperature (0 to ~600 °C) metamorphism of ferromagnesian minerals in mafic and ultramafic rocks, such as dunite
Serpentinization
Type of igneous and meta-igneous rock
greenschist through to granulite facies metamorphism when the rock in question is subjected to metamorphism and the metamorphic fluid has more than 10%
Ultramafic_rock
Developmental stage of arthropods between moults
larval forms of holometabolous (complete metamorphism) or nymphal forms of hemimetabolous (incomplete metamorphism) insects, but an instar can be any developmental
Instar
Geologic sequence in Quebec, Canada
southeast of Inukjuak, Quebec. These rocks have undergone extensive metamorphism, and represent some of the oldest surface rocks on Earth. The age of
Nuvvuagittuq_Greenstone_Belt
Circulation of water driven by heat exchange
related to the intrusion of granite, or as the result of orogeny or metamorphism. Hydrothermal circulation often results in hydrothermal mineral deposits
Hydrothermal_circulation
rim of the Bloody Creek structure provide abundance evidence of shock metamorphism that is indicative of a hypervelocity impact associated with this structure
Bloody_Creek_crater
Class of stony meteorites made of round grains
reached high enough temperatures that they experienced significant thermal metamorphism in their interiors. The source of the heat was most likely energy coming
Chondrite
Geological fault zone crossing Scotland
the Highland Border and describes the mineral zones associated with metamorphism. In the same publication, Barrow also outlines the ʻHighland Faultʼ and
Highland_Boundary_Fault
Topics referred to by the same term
a sedimentary rock Metamorphic grade, an indication of the degree of metamorphism of rocks Ore grade, a measure that describes the concentration of a valuable
Grade
Geologic formation in Western Australia
grade was the result of regional prehnite–pumpellyite to greenschist metamorphism caused by the widespread emplacement of granitic rocks such as the intrusive
Dresser_Formation
North American orogeny
deformation and metamorphism were asymmetric across the strike of the orogen. The Acadian plutons intruded every belt, unlike the deformation/metamorphism, of Avalonia
Acadian_orogeny
Igneous rock
origin: metamorphism of igneous nepheline syenite Localization: Rio de Janeiro State Age and determination method Country rocks last metamorphism age: 900
Litchfieldite
Magnesium- and iron-rich extrusive igneous rock
metamorphosed. These are known as greenstone belts, because low-grade metamorphism of basalt produces chlorite, actinolite, epidote and other green minerals
Basalt
Precipitation in the form of ice crystal flakes
According to the International Association of Cryospheric Sciences, snow metamorphism is "the transformation that the snow undergoes in the period from deposition
Snow
Sorosilicate mineral
calcium, magnesium, silicon, and oxygen. It is a product of contact metamorphism of siliceous limestones and dolomites, and rocks of sanidinite facies
Åkermanite
Type of sedimentary rock
a hard mudstone that has undergone metamorphism, and has well-developed cleavage. It has gone through metamorphism at temperatures between 200–250 °C
Mudrock
Submerged crater in Ontario, Canada
evidence of beds being overturned or even vertical. No evidence of shock metamorphism has been reported from the Charity Shoal Crater. This is likely because
Charity_Shoal_crater
Silicate mineral
in skarn deposits and limestones that have been subjected to contact metamorphism. It was first discovered within included blocks or adjacent to lavas
Vesuvianite
Various natural processes that alter a mineral's chemical composition or crystallography
alteration is distinctly different than the rock alteration process metamorphism. It also differs from weathering. However, these processes assist in
Mineral_alteration
crystallography, mineralogy and petrography and worked in the fields of metamorphism and crystallography in their infancy. Bascom was also an educator who
Meanings of minor-planet names: 6001–7000
Meanings_of_minor-planet_names:_6001–7000
Late Mesozoic terrane of heterogeneous rocks in the California Coast Ranges
sandstones, shales and conglomerates which have experienced low-grade metamorphism. Other important lithologies include chert, basalt, limestone, serpentinite
Franciscan_Complex
Desert glass found in Libya and Egypt
Kleinmann, Peter Horn and Falko Langenhorst (2001): Evidence for shock metamorphism in sandstones from the Libyan Desert Glass strewn field. Meteoritics
Libyan_desert_glass
Autonomous territory of Denmark
coastal strips are sediments formed in the Precambrian, overprinted by metamorphism and now formed by glaciers, which continue into the Cenozoic and Mesozoic
Greenland
Rock consolidated from volcanic ash
Zircon grains found in many tuffs are highly durable and can survive even metamorphism of the host tuff to schist, allowing absolute ages to be assigned to
Tuff
National gemstone of Ireland
of Laurentia. In the Grampian Orogeny it underwent silimanite grade metamorphism. Minerals formed at this stage were a variety of calc-silicates, including
Connemara_marble
Rock formation in New York
referred to as 'black ore' or 'dark ore.' This rock formation formed during metamorphism during the Ottawan phase of the Grenvillian orogeny, and extremely high
Gore_Mountain_Garnet
Rock type
shearing and compressive stresses during (dynamic) metamorphism The later (or final) stages of metamorphism According to the nature of mineral orientation
Tectonite
Dutch actress and model (born 1964)
Star Trek: The Next Generation episode "The Perfect Mate", as empathic metamorph Kamala, opposite Patrick Stewart, with whom she later starred in the X-Men
Famke_Janssen
Calcium hydroxide mineral
Ireland, it occurs as an alteration of calc–silicate rocks by contact metamorphism of larnite–spurrite. It occurs as fumarole deposits in the Vesuvius area
Portlandite
Geologic eon, 4031–2500 million years ago
enriching seawater with isotopically light oxygen. Due to recycling and metamorphism of the Archean crust, there is a lack of extensive geological evidence
Archean
Form of carbon
enough as the crust thickened so they experienced ultra-high-pressure metamorphism. These have evenly distributed microdiamonds that show no sign of transport
Diamond
Chain of volcanoes formed above a subducting plate
high-temperature, low-pressure metamorphism is located parallel to a belt of low-temperature, high-pressure metamorphism, preserve an ancient arc-trench
Volcanic_arc
prehnite-pumpellyite facies are considered burial metamorphism as the processes of orogenic regional metamorphism are not required. Zeolite facies is most often
Zeolite_facies
Metamorphic rock from a volcanic precursor
Metavolcanic rocks are volcanic rocks that have experienced metamorphism. In other words, the rock was originally produced by a volcano, either as lava
Metavolcanic_rock
Species of amphibian
Metamorphs are typically green
Cope's_gray_treefrog
Second period of the Mesoproterozoic Era
Oldest known sediments in the Baltic area that have not been subject to metamorphism Riphean age – Stage in the geological timescale named after the Urals
Ectasian
Relating to the element carbon
carbon. The word "carbonaceous" was first used in 1791. In geology, metamorphism of a carbonaceous geological material is expressed as a graphitisation
Carbonaceous
Nesosilicate mineral
Mullite or porcelainite is a rare silicate mineral formed during contact metamorphism of clay minerals. It can form two stoichiometric forms: 3Al2O32SiO2 or
Mullite
Fragment of Earth's crust
path indicates the metamorphism is related to the intrusion of magma within the Earth's crust. During prograde and peak metamorphism, temperature and pressure
Eastern Block of the North China Craton
Eastern_Block_of_the_North_China_Craton
Subgroup of phyllosilicate minerals within the kaolinite-serpentine group
phyllosilicate ((Mg,Fe) 3Si 2O 5(OH) 4) minerals, resulting from the metamorphism of the minerals that are contained in mafic to ultramafic rocks. They
Serpentine_subgroup
Geological processes that underlie the formation of mountains
plates). Folding, faulting, volcanic activity, igneous intrusion and metamorphism can all be parts of the orogenic process of mountain building. The formation
Mountain_formation
2024–2025 concert tour by Taemin
2024 (2024-08-31) End date April 27, 2025 (2025-04-27) Legs 4 No. of shows 37 Taemin concert chronology Metamorph (2023–2024) Ephemeral Gaze (2024–2025)
Ephemeral_Gaze
METAMORPHISM
METAMORPHISM
METAMORPHISM
METAMORPHISM
Boy/Male
Tamil
Lord Vishnu, Refuge of Man
Girl/Female
Muslim/Islamic
Night Rain
Girl/Female
Hindu, Indian
Baraf Ka Tukda; Precious
Boy/Male
Sikh
Strong-willed & self sufficient
Boy/Male
Anglo Saxon
Cursed.
Girl/Female
Tamil
Sweet voice
Girl/Female
Tamil
A music tune
Surname or Lastname
English
English : metonymic occupational name for someone who made bags or purses or for an official in charge of expenditure, from Middle English purse (via Old English from Latin bursa).Scottish : variant of Purser.
Surname or Lastname
English and Irish
English and Irish : variant spelling of Hardiman.
Female
English
 Variant spelling of English Myra, MIRA means "myrrh." Compare with other forms of Mira.
METAMORPHISM
METAMORPHISM
METAMORPHISM
METAMORPHISM
METAMORPHISM
n.
Backward development; a passing from a higher to a lower state of organization or structure, as when an animal, approaching maturity, becomes less highly organized than would be expected from its earlier stages or known relationship. Called also retrograde development, and regressive metamorphism.
n.
An alteration in a mineral or rock mass when involving a chemical change of the substance, as of chrysolite to serpentine; -- opposed to ordinary metamorphism, as implying simply a recrystallization.
n.
The metamorphism of limestone, that is, its conversion into marble.
n.
Destructive or downward metabolism; regressive metamorphism; -- opposed to anabolism. See Disassimilation.
n.
The state or quality of being metamorphic; the process by which the material of rock masses has been more or less recrystallized by heat, pressure, etc., as in the change of sedimentary limestone to marble.