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Generation of talc in the mantle wedge and its role in subduction dynamics in central Mexico
Subduction talc serpentine receiver function mantle wedge P-to-S velocity ratio
2013/8/13
Geophysical evidence shows the presence of low-seismic velocity material at the surface of slabs in subduction zones. In the central Mexican subduction zone this appears as a thin (～4 km) low-velocity...
The reaction talc + forsterite = enstatite + H2O: New experimental results and petrological implications
reaction talc H2O New experimental results
1998/1/30
The reaction talc 1 forsterite 5 enstatite 1 H2O has been investigated between 6 and 20 kbar. Previous high-pressure experimental studies suggested various reaction positions,mostly with positive P - ...
Synthesis of Expandable Fluorine Mica from Talc
Expandable mica Fluorine Intercalation Synthesis Talc
1992/4/1
Expandable fluorine micas were synthesized using talc and Na2SiF6 at 800亱C for 2 hours in air, nitrogen, argon, and under vacuum. Gaseous SiF4, generated from Na2SiF6, and the resultant amorphous sodi...
Electrostatic Potential at the Basal (001) Surface of Talc and Pyrophyllite as Related to Tetrahedral Sheet Distortions
Basal oxygen sheet Electrostatic potential Pyrophyllite Talc Tetrahedral sheet distortion
1990/10/1
Maps of the electrostatic potentials at the basal plane of talc and pyrophyllite, computed using a two-dimensional Ewald lattice-sum, reveal the effects caused by structural distortion of the phyllosi...
Thermal Transformation of Talc as Studied by Electron-Optical Methods
Enstatite Morphology Selected-area electron diffraction Talc Thermal transformation Topotactic relation Transmission electron microscopy
1988/8/1
The thermal decomposition of a fibrous talc was studied by transmission electron microscopy (TEM) and selected-area electron diffraction (SAD). Small changes in the lengths of a and b unit-cell parame...
Weathering of Enstatite to Talc Through a Sequence of Transitional Phases
Biopyribole Enstatite Smectite Talc Transmission electron microscopy Weathering
1982/11/1
Abstract: Orthopyroxene (En85) weathers initially by vacancy diffusion, and through this process hydration occurs and a sequence of biopyriboles develops, culminating in a talc-like layer silicate who...
The crystal structure of a sample of talc from Harford County, Maryland, has been determined by least squares refinement from X-ray diffraction photographs. A triclinic cell with a= 5·293, b = 9·179, ...