This uplift has exposed the Haast schists, which were metamorphosed from the adjacent Torlesse graywackes. rocks formed in metamorphism along fault zones. 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. 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. Metamorphism in geology is when one type of rock is transformed into another type of rock called a metamorphic rock. The type of rock that a metamorphic rock usedto be, prior to metamorphism, is called the protolith. However, the bulk of the uplift, approximately 25 km, took place in the past 10 m.y. Structure and metamorphism of the Haast Schist and Torlesse Zones between the Alpine Fault and the D'urville Valley, South Nelson . Quantifying magnitudes of shear heating in metamorphic systems. Metamorphism, mineralogical and structural adjustments of solid rocks to physical and chemical conditions differing from those under which the rocks originally formed. Apatite and zircon fission-track dating from the Hirabayashi-NIED borehole, Nojima Fault, Japan: Evidence for anomalous heating in fracture zones. Geochronological evidence for ∼ 530–550 Ma juxtaposition of two Proterozoic metamorphic terranes in the Musgrave Ranges, Central Australia. It forms a transform boundary between the Pacific Plate and the Indo-Australian Plate. Tethys–Atlantic interaction along the Iberia–Africa plate boundary: The Betic–Rif orogenic system. 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. The wordmetamorphism comes from ancient Greek words for "change" (meta) and "form" (morph). Tasman Belt and the Alpine Fault. Processes in Geophysics, Atmospheric Please check your email address / username and password and try again. Four zones of progressive metamorphism are recognized: the Chlorite, Biotite, Almandine, and Oligoclase zones. Inquiries into the Evolution of Orogenic Systems: A Volume in Honor of Raymond A. Working off-campus? 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). and Petrology, Exploration Fission-track age for a pseudotachylite from the Alpine Fault Zone, New Zealand. Oceanography, Interplanetary Metamorphism can be caused by burial, … Muscovite K-Ar ages of the Sanbagawa schists, Japan and argon depletion during cooling and deformation. The thermal structure and thermal evolution of the continental lithosphere. Permeability and strength of San Andreas Fault gouge under high pressure. Shear heating associated with movement along the Alpine Fault, New Zealand. 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. 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. Heating during thrust faulting in the rocky mountains: friction or fiction?. during Kaikoura Orogenic uplift on the Alpine Fault. 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. Derivation of gold by oxidative metamorphism of a deep ductile shear zone: Part 1. when meteoroid strikes earths surface. During metamorphism the mineral content and texture of the protolith are changed due to changes in the physical and chemical environment of the rock. 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. Physics, Comets and 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. In the Haast Schists, the minerals that make up greywacke became coarser grained and altered to other minerals including quartz, feldspar and biotite. From Turner (1981) Metamorphic Petrology: Mineralogical, Field, and Tectonic Aspects. Cooper (1970, 1972; Cooper and Lovering 1970) studied in detail the metamorphism of an area south of the Haast River and showed that the lamprophyric suite included dykes varying in composition from mica peridotite through lamprophyre to tinguaite, 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. Processes, Information Otago, New Zealand The Alpine Fault, which runs for about 600km up the spine of the South Island, is one of the world’s major geological features. the Alpine Fault yield much greater ages (140-130m.y. Structure and metamorphism of the Haast Schist and Torlesse Zones between the Alpine Fault and the D'urville Valley, South Nelson (1986) View/ Open rose_thesis.pdf (12.27Mb) Continental transforms: A view from the Alpine Fault. On the meaning of peak temperature profiles in inverted metamorphic sequences. Some thermal and mechanical consequences of rapid uplift: an example from the Southern Alps, New Zealand. Conceptual model. 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. Two metamorphisms (M2 and M3) are identified, M2 being associated with D2 and M3 with D3. FISSION TRACK THERMOCHRONOLOGIC ANALYSIS OF THE RYOKE BELT AND THE MEDIAN TECTONIC LINE, SOUTHWEST JAPAN. The most important agents of metamorphism include temperature, pressure, and fluids. The hanging wall tethys–atlantic interaction along the Iberia–Africa Plate boundary in the Southern Alps, New.... And structural adjustments of solid rocks to physical and chemical conditions differing from under! K-Ar ages of the Southern Alps of a deep ductile shear zone ( Yunnan China... Of combined oceanic and continental data sets and their use in tectonic studies Turner ( 1981 metamorphic... 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