The Mogok Metamorphic Belt (MMB) in Myanmar is a polymetamorphic, mainly Paleogene granulite-uppermost amphibolite facies terrane consisting of marbles and calc-silicates hosting spinel, ruby sapphire. Jurassic charnockite-syenite intrusions, as well Eocene-Miocene leucogranite intrusions are also present. Pelitic rocks uncommon, where present, have sillimanite, both primary inclusions garnet s...

The cooling history of granulite is crucial to understanding tectonic scenarios the continental crust. Ti-in-quartz, a useful indicator temperature, can decipher thermal evolution crustal rocks. Here we apply Ti-in-quartz (TitaniQ) thermometer ancient ultrahigh-temperature (UHT) granulites from Khondalite Belt (KB) in North China Craton (NCC) and young UHT Mogok Metamorphic (MMB), Myanmar. Ti c...

chloritoid is crystallised with chlorite, white mica and garnet in chlorite zone metapelites ofthe regional metamorphic rocks of the sanandaj-sirjan metamorphic belt in southern iran. chemistry ofcoexisting minerals is studied using microprobe analysis. application of the chlorite-chloritoidgeothermometry gives temperatures of 515°c and 557°c. the chlorite-garnet fe-mg exchangegeothermometer in...

a r t i c l e i n f o Keywords: Eclogite HP granulite Paired metamorphic belts UHPM UHTM The modern plate tectonics regime is characterized by a duality of thermal environments, one representing the subduction zone and the other representing the arc–backarc or orogenic hinterland. This duality is the hallmark of one-sided (asymmetric) subduction, and the characteristic imprint of one-sided subd...

Based on lithological, structural and geophysical characteristics, the Proterozoic Grenville Orogen of southern Ontario and New York has been divided into domains that are separated from each other by ductile shear zones. In order to constrain the timing of metamorphism, U-Pb ages were determined on metamorphic and igneous sphenes from marbles, calc-silicate gneisses, amphibolites, granitoids, ...

The Mogok metamorphic belt (MMB) of Myanmar is a famous geographical origin acknowledged by the whole world for its large mineral resources. In this study, basic gemological tests (density, UV fluorescence, refractive index, etc.), spectroscopic (infrared spectrum, Raman and ultra-violet visible spectrum) chemical composition analysis (electron microprobe laser ablation inductively coupled plas...

southern Omineca Belt, fieldwork was undertaken in 1987 to examine the geology of the Eagle River fault in the eastem Shuswap Highland. The Eagle River fault is a west-sidedown low-angle normal fault that juxtaposes low to mediumgrade metasedimentary and metavolcanic rocks of the Paleozoic Mount Ida Group atop high-grade gneisses of the Shuswap metamorphic complex (Figure 1-4-1 inset). Regional...

U-Pb and Ar/Ar dates from the Talladega belt, southernmost Appalachians, provide insight into the timing and nature of pre-Alleghanian tectonism in this region. Low-grade metasedimentary rocks of the Talladega belt represent the outermost preserved portions of the southern Laurentian margin, thus recording the earliest orogenic events that affected the margin, in addition to later overprinting ...