The Alpine (S 3) foliation in the nonmylonitic part of the Alpine Schist near Franz Josef and Fox Glaciers is near-vertical and strikes ∼040 in contrast to the Alpine Fault, which strikes ∼050 (Fig. index minerals. Fission-track age for a pseudotachylite from the Alpine Fault Zone, New Zealand. the Alpine Fault yield much greater ages (140-130m.y. Oceanography, Interplanetary Discussion on the age and tectonic setting of Tertiary Alpine Fault (Fig.1). 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. 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 In the Southern Alps there is a significant uplift following the Cretaceous Rangitata Orogeny, probably in the order of 11–15 km. Fault interaction and stresses along broad oceanic transform zone: Tjörnes Fracture Zone, north Iceland. The central Alpine Fault exposes rocks that have been deformed in the middle crust as recently as recently as 3 … The Australian plate is sliding horizontally towards the north-east, at the same time as the Pacific plate is pushing up, forming the Southern Alps. Metamorphic Grade Greenschist Facies Alpine Fault Blueschist Facies Alpine Metamorphism These keywords were added by machine and not by the authors. Within the bends region of the Alpine Fault two structural trends have been identified. If, alternatively, it is assumed that all fault motion took place in the last 30 m.y., this does not change our conclusion with respect to the stress required for the argon depletion. Otago, New Zealand 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. By continuing to use our website, you are agreeing to our, Fault rock lithologies and architecture of the central Alpine fault, New Zealand, revealed by DFDP-1 drilling, New on-fault evidence for a great earthquake in A.D. 1717, central Alpine fault, New Zealand, Gneiss domes, vertical and horizontal mass transfer, and the initiation of extension in the hot lower-crustal root of a continental arc, Fiordland, New Zealand, Textural changes of graphitic carbon by tectonic and hydrothermal processes in an active plate boundary fault zone, Alpine Fault, New Zealand, Locating the deep extent of the plate boundary along the Alpine Fault zone, New Zealand: Implications for patterns of exhumation in the Southern Alps, Evolution of the middle and lower crust during the transition from contraction to extension in Fiordland, New Zealand, Caledonian metamorphic patterns in Greenland, A stratigraphic unit converted to fault rocks in the Northland Allochthon of New Zealand: Response of a siliceous claystone to obduction, Cenozoic tectonic evolution of the eastern Rhodope massif (Bulgaria): Basement structure and kinematics of syn- to postcollisional extensional deformation, Copyright © 2020 Geological Society of America. Evidence for Mesozoic shear along the western Kunlun and Altyn‐Tagh fault, northern Tibet (China). Fission-track analysis of the Atotsugawa Fault (Hida Metamorphic Belt, central Japan): fault-related thermal anomaly and activation history. S3 schistosity, L3 lineations and F3 folds are associated with strain in, and adjacent to the Alpine Fault Zone. A comparison between the tectonic stress measured in situ and stress parameters from induced seismicity at Monticello Reservoir, South Carolina. The Torlese Group is metamorphosed predominantly in the prehnite-pumpellyite zone, and the Otago Schist in higher grade zones. Geology ; 39 (11): 1023–1026. Processes in Geophysics, Atmospheric Frictional heating during this episode produced the argon depletion. Contributions to Mineralogy and Petrology. https://www.sciencelearn.org.nz/resources/330-the-alpine-fault The Torlese Group is metamorphosed predominantly in the prehnite-pumpellyite zone, and the Otago Schist in higher grade zones. Please check your email for instructions on resetting your password. If you do not receive an email within 10 minutes, your email address may not be registered, By R. V. Rose. Use the link below to share a full-text version of this article with your friends and colleagues. This process is experimental and the keywords may be updated as the learning algorithm improves. Physics, Comets and Structure and metamorphism of the Haast Schist and Torlesse Zones between the Alpine Fault and the D'urville Valley, South Nelson . Aronson, 1968). 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. 8a and b). Metamorphism can be caused by burial, … Fission-Track Thermochronology and its Application to Geology. This uplift has exposed the Alpine schists, which have been metamorphosed from the adjacent Torlesse graywackes. They form an inverted metamorphic sequence grading eastward into an ∼1-km-wide, amphibolite-facies−derived mylonite zone in the hanging wall. Possible causes and consequences of upper mantle decoupling and ophiolite displacement. From Turner (1981) Metamorphic Petrology: Mineralogical, Field, and Tectonic Aspects. and Petrology, Exploration Their mineralogy matches low-grade protoliths that occur 100–110 km to the southeast. Transform Boundary – Alpine Fault, South Island, New Zealand. As mountains are built along tectonic plates, preexisting rocks affected by temperature or pressure can create entirely new kinds of rocks. We examine processes of graphite emplacement and deformation in the Alpine Fault Zone, New Zealand’s ago). Journal of Geophysical Research: Solid Earth. Otago, New Zealand A Continental Plate Boundary: Tectonics at South Island, New Zealand. Thermochronological investigation of fault zones. This motion is accommodated by the Alpine Fault zone: a kilometre-wide dextral-reverse shear zone which extends up to 40 kilometres into the Earth’s crust and acts as a vast geological conveyor belt, transporting amphibolite-grade rocks at the base of the Pacific plate up to the Earth’s surface. Heating during thrust faulting in the rocky mountains: friction or fiction?. during Kaikoura Orogenic uplift on the Alpine Fault. In between earthquakes, the Alpine Fault is locked. Tasman Belt and the Alpine Fault. Geology and Geophysics, Physical McGraw-Hill. Mechanics Problems in Geodynamics Part II. 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. Frictional heating, fluid pressure, and the resistance to fault motion. Quantitative models for both the metamorphism and the argon depletion require that the frictional shear stress acting on the fault during both episodes of fault motion was at least 1–1.5 kbars. The Mechanics of Earthquakes and Faulting. Tectonics and heat sources for granulite metamorphism of supracrustal-bearing terranes. 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. Tethys–Atlantic interaction along the Iberia–Africa plate boundary: The Betic–Rif orogenic system. 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. Geochronological evidence for ∼ 530–550 Ma juxtaposition of two Proterozoic metamorphic terranes in the Musgrave Ranges, Central Australia. Search for other works by this author on: You do not currently have access to this article. Digital images of combined oceanic and continental data sets and their use in tectonic studies. Thermal modeling of the Southern Alps, New Zealand. 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 Ailao Shan-Red River shear zone (Yunnan, China), Tertiary transform boundary of Indochina. The D3 trend overprints D2 close to the Alpine Fault and is subparallel to the fault. 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. and you may need to create a new Wiley Online Library account. 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). Dynamic models of interseismic deformation and stress transfer from plate motion to continental transform faults. Earthquakes along the fault, and the associated earth movements, have formed the Southern Alps. Heat flow from Cajon Pass, fault strength, and tectonic implications. However, the bulk of the uplift, approximately 25 km, took place in the past 10 m.y. The Torlesse Composite Terrane has undergone metamorphism and been transformed into Haast Schist. Frictional Metamorphism of Coal in the Upper Silesia Coal Basin, Southern Poland. The interpretation of inverted metamorphic isograds using simple physical calculations. The Alpine schists increase in metamorphic grade from prehnite‐pumpellyite facies 9–12 km from the fault through the chlorite and biotite zones of the greenschist facies to the garnet‐oligoclase zone of amphibolite facies within 4 km of the fault. and Chemical Oceanography, Physical The K‐Ar and Rb‐Sr ages of the schists increase with distance from the fault: from 4 m.y. Bull and Cooper, 1986; Wellman, 1979). These metamorphic zone boundaries are subparallel to the fault for 350 km along the strike. Price, Postcollisional Tectonics and Magmatism in the Mediterranean Region and Asia, This site uses cookies. 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. Learn about our remote access options. 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. Semi-brittle deformation within the Alpine fault zone, New Zealand. Please check your email address / username and password and try again. Thermal anomaly around the Nojima Fault as detected by fission-track analysis of Ogura 500 m borehole samples. 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). The Alpine schists increase in metamorphic grade from prehnite‐pumpellyite facies 9–12 km from the fault through the chlorite and biotite zones … Conceptual model. Geophysics, Marine metamorphism in the metasedimentary rocks (Tuhua sequence), comprising much of central and western Fiordland, has been based primarily on limited K–Ar Nelson–Westland ages, despite the susceptibility of this system to resetting (e.g. The alpine fault metamorphism mountains: friction or fiction? rock is transformed into another type jade. Tectonic implications ) 031 < 0541: NFHATS > 2.0.CO ; 2 Kaikoura... 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