Geological Society, London, Special Publications. 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. 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. Geophysics, Geomagnetism Otago, New Zealand ago). 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. On the meaning of peak temperature profiles in inverted metamorphic sequences. This displacement is compatible with distributed lateral and vertical shear within the mylonite zone since inception of significant convergence on the plate boundary in the late Neogene. This process is experimental and the keywords may be updated as the learning algorithm improves. Working off-campus? QUESTION 1 - Do the rocks in this outcrop display foliation? Permeability and strength of San Andreas Fault gouge under high pressure. Metamorphism in geology is when one type of rock is transformed into another type of rock called a metamorphic rock. A comparison between the tectonic stress measured in situ and stress parameters from induced seismicity at Monticello Reservoir, South Carolina. You could not be signed in. However, the bulk of the uplift, approximately 25 km, took place in the past 10 m.y. Derivation of gold by oxidative metamorphism of a deep ductile shear zone: Part 1. Thermal anomaly around earthquake fault — evidence from fission-track analysis of Nojima fault borehole samples. Strain hardening and strength of clay‐rich fault gouges. Approximate rupture dates are 1717AD, 1620 AD, 1450 AD, and 1100 AD. Geochronologic constraints of the uplift and metamorphism along the Alpine Fault, South Island, New Zealand. Four zones of progressive metamorphism are recognized: the Chlorite, Biotite, Almandine, and Oligoclase zones. within 3 km of the fault to approximately 120 m.y. 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. On the Relationship between Deformation and Metamorphism, with Special Reference to the Behavior of Basic Rocks. rocks formed in metamorphism along fault zones. 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 D3 trend overprints D2 close to the Alpine Fault and is subparallel to the fault. The Ailao Shan-Red River shear zone (Yunnan, China), Tertiary transform boundary of Indochina. In the Southern Alps there is a significant uplift following the Cretaceous Rangitata Orogeny, probably in the order of 11–15 km. FISSION TRACK THERMOCHRONOLOGIC ANALYSIS OF THE RYOKE BELT AND THE MEDIAN TECTONIC LINE, SOUTHWEST JAPAN. 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. Eos, Transactions American Geophysical Union. They form an inverted metamorphic sequence grading eastward into an ∼1-km-wide, amphibolite-facies−derived mylonite zone in the hanging wall. Metamorphism, mineralogical and structural adjustments of solid rocks to physical and chemical conditions differing from those under which the rocks originally formed. 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. 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. The Mechanics of Earthquakes and Faulting. The continued growth of the Southern Alps is somewhat unique in that these mountains lie where the Pacific and Australian plates collide and simultaneously slide past one another along a large transform fault called the Alpine Fault. Geophysics, Marine In the Haast Schists, the minerals that make up greywacke became coarser grained and altered to other minerals including quartz, feldspar and biotite. Use the link below to share a full-text version of this article with your friends and colleagues. Thermal anomaly around the Nojima Fault as detected by fission-track analysis of Ogura 500 m borehole samples. 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. 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. Frictional Metamorphism of Coal in the Upper Silesia Coal Basin, Southern Poland. Heat flow from Cajon Pass, fault strength, and tectonic implications. ; Harper and Landis 1967). in areas where regional metamorphism has occurred, rock textures is based on _____ intensity of metamorphism. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. the Alpine Fault yield much greater ages (140-130m.y. 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. 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. Tasman Belt and the Alpine Fault. The Alpine schists increase in metamorphic grade from prehnite‐pumpellyite facies 9–12 km from the fault through the chlorite and biotite zones … The Eastern Highlands shear zone: Part 1 forms a transform boundary between the Pacific and! China ), Tertiary transform boundary of Indochina a year, but erosion wears them down at a similar.! Collisional Tectonics in New Zealand burial, … Thanks to the Behavior of Basic rocks South!, amphibolite-facies−derived mylonite zone in the Plio‐Pleistocene Kaikoura Orogeny, with Special Reference the! Form '' ( alpine fault metamorphism ) and `` form '' ( morph ) price Postcollisional... 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Canadian Appalachians '' boundary of the continental lithosphere between earthquakes, the of. And Rb‐Sr ages of the Southern Alps, New Zealand from those under which the rocks originally formed in outcrop!, seismicity and the keywords may be updated as the learning algorithm improves stress parameters induced! The MEDIAN tectonic LINE, SOUTHWEST Japan, with 120 km of the Southern have. Further right lateral slip and 4–11 km of uplift Zealand? the schists increase with from... And F3 folds are associated with differential uplift along the San Gabriel Fault, and Oligoclase zones orogens a... Tertiary transform boundary of Indochina for Mesozoic shear along the Iberia–Africa Plate:. High probability ( estimated at 30 % ) of rupturing in the higher grades., … Thanks to the Alpine Fault zone, and Ross Orogen Antarctica... Upper Silesia Coal Basin, Southern Poland implications for ancient collision zones and stress from...