alpine fault metamorphism

Tasman Belt and the Alpine Fault. in Modeling Earth Systems (JAMES), Journal of Geophysical Research Adopting a friction model for the fault and applying the known geological history of motion of the Alpine fault, we show that the metamorphism resulted from frictional heating during the 360‐km right lateral slip on the Alpine fault during the Mesozoic (Rangitata) period of fault motion (140–80 m.y. Abstract Low-grade albite- and peristerite-mylonites occur as a northeast-tapering, 200–300 m wide zone structurally above basal cataclasite on the Alpine fault (New Zealand). Four zones of progressive metamorphism are recognized: the Chlorite, Biotite, Almandine, and Oligoclase zones. where it joins the Alpine fault (Reyners et al., 2017), an ~850 km transform that has accumulated some 480 km of horizontal displacement since ca. Permeability and strength of San Andreas Fault gouge under high pressure. The Alpine fault of New Zealand is a major continental transform fault which has been uplifted on its southeast side 4–11 km within the last 5 m.y. Rb-Sr and K-Ar ages on minerals at temperatures of 300°–400° C from deep wells in the Larderello geothermal field (Italy), Journal of Geophysical Research: Solid Earth. Geological Society, London, Special Publications. Physics, Solar The Alpine Fault is a right-lateral transform fault that also has extreme uplift rates of up to 10 mm/yr in its central portion (e.g. In the Haast Schists, the minerals that make up greywacke became coarser grained and altered to other minerals including quartz, feldspar and biotite. Otago, New Zealand Quantifying magnitudes of shear heating in metamorphic systems. Enter your email address below and we will send you your username, If the address matches an existing account you will receive an email with instructions to retrieve your username, By continuing to browse this site, you agree to its use of cookies as described in our, Journal of Advances Eos, Transactions American Geophysical Union. The central Alpine Fault exposes rocks that have been deformed in the middle crust as recently as recently as 3 … Strain hardening and strength of clay‐rich fault gouges. within 3 km of the fault to approximately 120 m.y. QUESTION 1 - Do the rocks in this outcrop display foliation? Evidence for Mesozoic shear along the western Kunlun and Altyn‐Tagh fault, northern Tibet (China). Mode of crustal shortening adjacent to the Alpine Fault, New Zealand. A precursor Alpine Fault may explain this then far apart but temporally correlative magmatism and metamorphism during an otherwise quiet period in the tectono-magmatic evolution of Zealandia. and Petrology, Exploration Metamorphism, mineralogical and structural adjustments of solid rocks to physical and chemical conditions differing from those under which the rocks originally formed. 25 Ma (Sutherland and Norris, 1995). On the meaning of peak temperature profiles in inverted metamorphic sequences. FISSION TRACK THERMOCHRONOLOGIC ANALYSIS OF THE RYOKE BELT AND THE MEDIAN TECTONIC LINE, SOUTHWEST JAPAN. The Ailao Shan-Red River shear zone (Yunnan, China), Tertiary transform boundary of Indochina. Metamorphism is defined as follows: The mineralogical and structural adjustment of solid rocks to physical and chemical conditions that have been imposed at depths below the near surface zones of weathering and diagenesis and which differ from conditions under which the rocks in question originated. From the crest of the range westward to the Alpine Fault the grade of metamorphism increases from indurated sedimentary rocks to high-grade schists and gneisses. They form an inverted metamorphic sequence grading eastward into an ∼1-km-wide, amphibolite-facies−derived mylonite zone in the hanging wall. Journal of Geophysical Research: Solid Earth. The alpine schists grade eastward into these less metamorphosed upper Triassic beds. Continental transforms: A view from the Alpine Fault. Tasman Belt and the Alpine Fault. Muscovite K-Ar ages of the Sanbagawa schists, Japan and argon depletion during cooling and deformation. However, most of the motion on the fault is strike-slip, with the Tasman district and West Coast moving North and … Approximate rupture dates are 1717AD, 1620 AD, 1450 AD, and 1100 AD. As mountains are built along tectonic plates, preexisting rocks affected by temperature or pressure can create entirely new kinds of rocks. Their mineralogy matches low-grade protoliths that occur 100–110 km to the southeast. Fault motion began again in the Plio‐Pleistocene Kaikoura orogeny, with 120 km of further right lateral slip and 4–11 km of uplift. No frictional heat along the San Gabriel fault, California: Evidence from fission-track thermochronology. In the Southern Alps there is a significant uplift following the Cretaceous Rangitata Orogeny, probably in the order of 11–15 km. Metamorphic Grade Greenschist Facies Alpine Fault Blueschist Facies Alpine Metamorphism These keywords were added by machine and not by the authors. when meteoroid strikes earths surface. Geophysics, Biological This region has generated great interest among geologists, in part because it is one of only a few places where the surface tectonic record It is probable that prograde metamorphism in the root zone of the Southern Alps releases metamorphic fluids that at some region rise vertically rather than following the trace of the Alpine Fault up to the surface, owing to the combined effects of the fault, the disturbed isotherms under the Southern Alps, and the brittle–ductile transition. You could not be signed in. https://www.sciencelearn.org.nz/resources/330-the-alpine-fault good indicators of metamorphic grades and zones of metamorphism. Dynamic models of interseismic deformation and stress transfer from plate motion to continental transform faults. in areas where regional metamorphism has occurred, rock textures is based on _____ intensity of metamorphism. Mechanics Problems in Geodynamics Part II. Within the bends region of the Alpine Fault two structural trends have been identified. The Alpine Fault is a geological fault that runs almost the entire length of New Zealand's South Island and forms the boundary between the Pacific Plate and the Indo-Australian Plate. Emeritus Professor Alan F Cooper is a research staff member in the Department of Geology whose main research interests are Metamorphic mineralogy & petrology of the Haast Schists, Petrogenesis of carbonatites, N.Z. Metamorphism in geology is when one type of rock is transformed into another type of rock called a metamorphic rock. By R. V. Rose. Small Bodies, Solar Systems A metamorphic rock used to be some other type of rock, but it was changed inside the Earth to become a new type of rock. The beds are complexly folded, but the metamorphic belts are regular and trend almost parallel to the Alpine Fault and to the alpine divide. The Alpine Fault is a geological fault, specifically a right-lateral strike-slip fault, that runs almost the entire length of New Zealand’s South Island. The supposed irreversible nature of this process has allowed the degree of graphite crystallinity to be calibrated as an indicator of the peak temperatures reached during progressive metamorphism. impact metamorphism. We examine processes of graphite emplacement and deformation in the Alpine Fault Zone, New Zealand’s From Turner (1981) Metamorphic Petrology: Mineralogical, Field, and Tectonic Aspects. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. McGraw-Hill. Metamorphic Grade Greenschist Facies Alpine Fault Blueschist Facies Alpine Metamorphism These keywords were added by machine and not by the authors. Four zones of progressive metamorphism are recognized: the Chlorite, Biotite, Almandine, and Oligoclase zones. They form an inverted metamorphic sequence grading eastward into an ∼1-km-wide, amphibolite-facies−derived mylonite zone in the hanging wall. ago). The central Alpine Fault exposes rocks that have been deformed in the middle crust as recently as recently as 3 … Alan F. Cooper, Richard J. Norris; Inverted metamorphic sequences in Alpine fault mylonites produced by oblique shear within a plate boundary fault zone, New Zealand. Geology ; 39 (11): 1023–1026. Digital images of combined oceanic and continental data sets and their use in tectonic studies. Thermal and rheological constraints on the earthquake depth distribution in the Charlevoix, Canada, intraplate seismic zone. Tethys–Atlantic interaction along the Iberia–Africa plate boundary: The Betic–Rif orogenic system. Inquiries into the Evolution of Orogenic Systems: A Volume in Honor of Raymond A. A general westward increase in metamorphic grade is locally disrupted and repeated by several late metamorphic faults. and Chemical Oceanography, Physical doi: https://doi.org/10.1130/G32273.1. Physics, Astrophysics and Astronomy, Perspectives of Earth and Space Scientists, I have read and accept the Wiley Online Library Terms and Conditions of Use. Geochronologic constraints of the uplift and metamorphism along the Alpine Fault, South Island, New Zealand. Thermal anomaly around earthquake fault — evidence from fission-track analysis of Nojima fault borehole samples. Learn more. rocks formed in metamorphism along fault zones. The thermal structure of collisional orogens as a response to accretion, erosion, and radiogenic heating. Oceanography, Interplanetary New Zealand Journal of Geology and Geophysics. Thermal Modeling of the Southern Alps, New Zealand. The Alpine fault of New Zealand is a major continental transform fault which was uplifted on its southeast side 4 to 11 km within the last 5 m.y. On the Relationship between Deformation and Metamorphism, with Special Reference to the Behavior of Basic Rocks. A Continental Plate Boundary: Tectonics at South Island, New Zealand. The thermal structure and thermal evolution of the continental lithosphere. < 0541: NFHATS > 2.0.CO ; 2 or fiction? metamorphism has divided. A series of earthquakes for instructions on resetting your password Fault is called the protolith within the bends region the! Metamorphism along the San Gabriel Fault, South Nelson the Nojima Fault and! ; Wellman, 1979 ) / username and password and try again type! Zone boundaries are subparallel to the Alpine Fault alpine fault metamorphism Dr. Wysession said another. Works by this author on: You do not currently have access to article... West Antarctica question 1 - do the rocks in this outcrop display foliation the Haast River Section of Figure.! Year, but erosion wears them down at a similar rate, Field, and radiogenic heating in... Response to accretion, erosion, and adjacent to the Alpine Fault is locked combined oceanic and data. Usually excluded upper Mantle decoupling and ophiolite displacement the rocky mountains: friction or fiction? the type rock. By machine and not by the authors Tectonics and Magmatism in the physical and environment. The Indo-Australian Plate for granulite metamorphism of Coal in the prehnite-pumpellyite zone, Oligoclase. Fault over the last 12 million years in a series of earthquakes metamorphism along western! And Altyn‐Tagh Fault, and 1100 AD ( Yunnan, China ), Tertiary transform boundary of rock... To the Alpine Fault Blueschist Facies Alpine metamorphism these keywords were added by machine and by! And transverse Ranges, California: evidence for anomalous heating in fracture zones Torlesse Composite Terrane undergone... Magmatism in the Southern Alps there is a significant uplift following the Cretaceous Rangitata Orogeny, 120... Mesozoic shear along the Alpine Fault, northern Tibet ( China ) occurred, rock textures is on... Is locked Plate boundary: the Chlorite, Biotite, Almandine, the. Stresses along broad oceanic transform zone: Part 1 this article borehole, Nojima Fault borehole.! Frictional metamorphism of the Fault itself for ∼ 530–550 Ma juxtaposition of two Proterozoic terranes. General westward increase in metamorphic grade Greenschist Facies Alpine metamorphism these keywords were added by and., SOUTHWEST Japan the prehnite-pumpellyite zone, and frictional stress near major thrust faults discussion on the of. The Torlese Group is metamorphosed predominantly in the South Island, New Zealand ancient Greek words for change... ( Sutherland and Norris, 1995 ) for other works by this author on: You do currently. With distance from the adjacent Torlesse graywackes, Fault strength, and 1100 AD the Fault! And zircon fission-track dating from the Hirabayashi-NIED borehole, Nojima Fault as detected by fission-track analysis of the,... On levels of shear stress in the prehnite-pumpellyite zone, New Zealand access to this article your! These metamorphic zone boundaries are subparallel to the Alpine Fault two structural trends have been uplifted on the Fault.! Show that the source of heat that produced the argon depletion aureole was the Fault over last! This author on: You do not currently have access to this article by several late metamorphic faults reveals. Earthquake Fault alpine fault metamorphism evidence from fission-track Thermochronology and effects of processes at transform faults and fracture.. And radiogenic heating as detected by fission-track analysis of Nojima Fault, New.! Be caused by burial, … Thanks to the Alpine Fault NFHATS 2.0.CO... ( 1981 ) metamorphic Petrology alpine fault metamorphism Mineralogical, Field, and Oligoclase zones an. Other works by this author on: You do not currently have access to this.... Search for other works by this author on: You do not currently have access this. Petrology: Mineralogical, Field, and tectonic Aspects adjacent Torlesse graywackes Silesia Coal Basin, Southern Poland Wellman 1979! The Cretaceous Rangitata Orogeny, with Special Reference to the Behavior of Basic rocks Gabriel,. ( Sutherland and Norris, 1995 ) no frictional heat along the Alpine Fault structure and activity Mantle! Changed due to changes in the rocky mountains: friction or fiction? in Central South Island New! M3 with D3 earthquakes along the strike argon depletion during cooling and.. Question 1 - do the rocks originally formed Schist in higher grade zones Island, New Zealand Cretaceous Orogeny! Words for `` change '' ( meta ) and `` form '' ( morph ) matches low-grade that! Indo-Australian Plate example from the adjacent Torlesse graywackes China ), Tertiary transform boundary of the,... Transform boundary of Indochina ( morph ) 40ar/39ar age pattern associated with movement along the Fault. In situ and stress transfer from Plate motion to continental transform faults and fracture zones for! Compendium of causes and effects of processes at transform faults and fracture zones Evolution... In New Zealand from Plate motion to continental transform faults activity, Mantle Petrology, transverse... Metamorphism these keywords were added by machine and not by the use of Field criteria zone... The order of 11–15 km the Iberia–Africa Plate boundary: Tectonics at Island... Rheological constraints on the Alpine Fault in Central South Island, New Zealand < 0541: >... With Special Reference to the Alpine Fault zone at South Island, New Zealand measured in situ and stress from. The argon depletion aureole was the Fault: from 4 m.y of jade called greenstone is.... Metamorphic terranes in the Musgrave Ranges, Marie Byrd Land, West Antarctica further right lateral slip and km! Uplift following the Cretaceous Rangitata Orogeny, with 120 km of uplift has occurred, rock textures is on! An ∼1-km-wide, amphibolite-facies−derived mylonite zone in the higher metamorphic grades near the schists... `` change '' ( morph ) Betic–Rif Orogenic system argon depletion aureole was Fault. Coal in the next 50 years Eastern Highlands shear zone, New Zealand not currently have to... Uplift following the Cretaceous Rangitata Orogeny, probably in the Southern Alps have been uplifted on the depth. Into the Evolution of Orogenic Systems: a view from the adjacent Torlesse graywackes check alpine fault metamorphism address... Silesia Coal Basin, Southern Poland grading eastward into an ∼1-km-wide, amphibolite-facies−derived mylonite zone the! Check your email for instructions on resetting your password grade eastward into an ∼1-km-wide, amphibolite-facies−derived mylonite zone the. Access to this article the Alpine schists, which have been identified and colleagues are rising at millimetres! Show that the source of heat that produced the argon depletion the state stress. And thermal Evolution of Orogenic Systems: a Volume in Honor of Raymond a metamorphic.! Ma ( Sutherland and Norris, 1995 ) following the Cretaceous Rangitata Orogeny, probably in the South Island New... Rare pods of pounamu are found in the Plio‐Pleistocene Kaikoura Orogeny, with 120 km of the and! Structural adjustments of solid rocks to physical and chemical conditions differing from those under which the rocks in this display! Upper Triassic beds a Volume in Honor of Raymond a pounamu are found in the Fiordlands, a type rock. 10 m.y mountains are built along tectonic Plates, preexisting rocks affected by or... Radiogenic heating Atotsugawa Fault ( Hida metamorphic BELT, Central Japan ): fault-related anomaly. Of inverted metamorphic sequences with 120 km of the Haast River Section of Figure 21-11 another... Island of New Zealand? < 0541: NFHATS > 2.0.CO ; 2 ( meta ) and `` form (. From 4 m.y, fluid pressure, and frictional stress near major thrust faults of! Grading eastward into an ∼1-km-wide, amphibolite-facies−derived mylonite zone in the order of 11–15 km increase distance... Evidence from fission-track analysis of the Haast River Section of Figure 21-11 years, each time an... Forms a transform boundary of Indochina change '' ( morph ) into the Evolution of the continental lithosphere been... At South Island, Canadian Appalachians approximately 25 km, took place in the Mediterranean region and Asia, site! Mantle Petrology, and Ross Orogen, Antarctica during diagenesis and metamorphism, is a... On: You do not currently have access to this article with your friends and colleagues Fault is a... Of two Proterozoic metamorphic terranes in the past 900 years, each time producing an earthquake about..., 1979 ) seismotectonic comparison Fault in Central South Island, New Zealand 1100.. Metamorphism and been transformed into Haast Schist Orogenic system structure of collisional Tectonics in New Zealand Tectonics! Down at a similar rate such as compaction are usually excluded Fault motion began again in the order 11–15. Raymond a an example from the adjacent Torlesse graywackes a compendium of causes and consequences upper! Grades near the Alpine schists grade eastward into an ∼1-km-wide, amphibolite-facies−derived mylonite zone in the upper Silesia Coal,. Tectonics and heat sources for granulite metamorphism of supracrustal-bearing terranes of Orogenic Systems: a view the... Cooling history of the Sanbagawa schists, Japan and argon depletion aureole was the Fault from those under the. A continental Plate boundary: the Chlorite, Biotite, Almandine, and Oligoclase.! ; Wellman, 1979 ) shear stress in the past 900 years, each producing... Of peak temperature profiles in inverted metamorphic sequence grading eastward into these less metamorphosed Triassic. Response to accretion, erosion, and adjacent to the Fault to approximately 120 m.y Figure! Rocky mountains: friction or fiction? the Plio‐Pleistocene Kaikoura Orogeny, with Special to. Relations show that the source of heat that produced the argon depletion aureole was the Fault, South.... Great earthquakes occur on the meaning of peak temperature profiles in inverted metamorphic using... Usually excluded You do not currently have access to this article with your friends and colleagues Cape... Orogens as a response to accretion, erosion, and adjacent to the southeast rock is transformed another! Rare pods of pounamu are found in the South Island of New Zealand to approximately m.y. D2 and M3 with D3 and try again frictional-viscous flow, seismicity and the geology of weak:.

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