نتایج جستجو برای: hornblende schist
تعداد نتایج: 1080 فیلتر نتایج به سال:
We present surface and structural models of a swarm dm-scale subparallel faults exposed in ∼2000 m2 glaciated outcrop near Franz Josef Glacier, the Southern Alps New Zealand. These structures are inferred to have slipped at ∼20 km depth hanging-wall Alpine Schist Fault under conditions that were variably brittle ductile as Pacific Plate was tilted uplifted. Using field mapping, real-time kinema...
The calcareous rocks in the Takht-e- Soleyman area (NW Iran) crop out in association with a variety of metamorphic rocks including amphibolites, granitic gneisses, pelitic schists and meta-ultramafic rocks. Retrogressive metamorphism of these rocks occurred during decompressional cooling during exhumation. Cummingtonite-bearing rocks resulted from retrogression of the calc-silicates in the area...
The 4.5 km deep IDDP-2 drill hole was drilled at Reykjanes, Iceland, in an active seawater-recharged hydrothermal system on the landward extension Mid-Atlantic Ridge. Drilling targeted a well-defined up-flow zone feeding Reykjanes geothermal reservoir, which produces fluids compositionally equivalent to basalt-hosted sea vents. Spot cores recovered from depths between 3,648 4,659 m consist of p...
granitoid rocks of kaje area, northwest ferdows, with the composition of diorite, monzodiorite, monzonite, monzogranite, syenogranite and granite, with calk-alkaline and high potassium affinities, have trace and rare earth element geochemical characteristics similar to those from subduction zones, belonging to i-type granitoid rocks. most of these rocks are oxidized (magnetite series), while on...
We carried out geochemical and mineralogical analyses on fault-zone rocks from the Anko section of the Median Tectonic Line in Nagano Prefecture, Japan, to investigate coseismic physicochemical processes in the fault zone. The latest fault zone in the Anko section contains cataclasite, fault breccia, and fault gouge of granitic composition, and brecciated basic schist. Protoliths of the graniti...
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