Spectroscopic evidence of the thermally induced generation of multifunctional mesoporous materials through metamorphism within the pore walls of ethenylene-bridged PMOs is presented.

-New and published experimental data on hydrothermally treated (2-kbar water pressure, 300-400~ natural clay minerals is used to construct phase diagrams in composition and pressure-temperature space which define the phase relations of mixed layering solid solution in dioctahedral (illitemontmorillonite) and trioctahedral expanding chlorite and corrensite-like minerals. Three major relations ar...

Structural and thermochronological data from the Sulu terrane of eastern China document the exhumation of high-pressure and ultrahigh-pressure (UHP) metamorphic rocks to upper-crustal depths by ca. 206 Ma. 40Ar/39Ar ages from K-bearing phases record recrystallization and cooling through amphiboliteand upper greenschist– facies conditions during top-to-the-NW noncoaxial shear and suggest cooling...

the chadegan metamorphic complex is a wnw-ese- trending antiformal structure located in sanandaj-sirjan structural zone, iran.the inner core of the structure is made of orthogneiss, containing eclogitic lenses. schists and marbles lie structurally above theorthogneiss and crop out in the external limbs of the antiformal dome. two main deformational episodes have been documented in theschists an...

Metamorphism along the southern margin of the Archean Superior Province has been historically attributed to the Penokean orogeny. A narrow corridor of amphibolite facies rocks north of the main suture does record 1.83–1.80 Ga metamorphic monazite U–Th–Pb ages that mark the culmination of arc accretion. However, subsequent widespread amphibolite facies metamorphism and associated magmatism is re...

Eclogites from the Guanshan and Yangkou areas of Sulu orogen consist garnet, omphacite, phengite, amphibole, quartz/coesite, rutile, ilmenite. Garnet exhibits weak compositional zoning where Xgr decreases core to mantle then increases towards rim, coupled with an increase in Xpy decrease rim. Phase equilibria modelling pseudosections calculated using THERMOCALC NCKFMASHTO system for eclogites r...

Molecular structures and chemical compositions of organic matter in primitive meteorites reflect the conditions parent bodies, as well preaccretional history. During body processing, co-existing minerals could have effects on structural changes organics, addition to temperature redox state. Here, we performed heating experiments a primordial analog with without understand simulating metamorphis...

Abstract Since the Jurassic, there has been a clear spatiotemporal correlation between different types of metamorphism and active convergent plate margins. However, extent to which this relationship extends into past is poorly understood. We compared paleogeographic reconstructions inferred kinematics with age thermobaric ratio (temperature/pressure [T/P]) over 2 b.y. The null hypothesis—that n...

Propylene and acetylene are released to mine air with the increase in the temperature of self-heating coal. Concentrations of these gases in mine air are applied as indicators of the progress of the self-heating process. Hydrocarbons emitted from the self-ignition center are sorbed on coal, while migrating through the mine workings. Coal crushed during the mining process is characterized by a h...