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Now showing items 8327-8346 of 43490
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(2006)The microtexture and mineralogy of a 580-?m-wide melt vein in the Tenham L6 chondrite were investigated using field-emission scanning electron microscopy and transmission electron microscopy to better understand the shock ...
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(2001)The Raman spectra of synthetic α-Co2SiO4 and α-Ni2SiO4 olivines have been studied at room temperature and various pressures. All the Raman frequencies of the two olivines increase with increasing pressure, and most of the ...
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(2006)Raman spectra of monoclinic Fo90 hydrous wadsleyite with 2.4 wt% H2O have been measured in a diamond-anvil cell with helium as a pressure-transmitting medium to 58.4 GPa at room temperature. The most intense, characteristic ...
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(2001)The structural evolution up to 5 GPa of a natural heulandite was studied using in situ single-crystal X- ray diffraction data from a diamond-anvil cell (DAC) with glycerol as the pressure transmitting medium. Linear ...
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(2002)The RP structural evolution of a natural scolecite from Iceland (space group Cc) was studied up to 5 GPa using in situ single-crystal X-ray diffraction data from a diamond-anvil cell (DAC) with silicon oil as non penetrating ...
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(2004)The high-pressure character of the metamorphic rocks from the Dakhov Block makes them similar to the Blyb eclogite-bearing complex in the southern part of the Front Range, but the maximum pressures in the block were lower ...
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(2006)In-situ X-ray powder diffraction measurements conducted under high pressure confirmed the existence of an unquenchable orthorhombic perovskite in ZnGeO3. ZnGeO3 ilmenite transformed into perovskite at 30.0 GPa and 1300±150 K ...
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(2006)This paper describes the petrology and geochemistry of high-pressure veins and associated metasomatic selvages that are hosted by eclogite in the Pouébo Eclogite Melange of northern New Caledonia. Isotopic and geochemical ...
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(2004)The ZrO 2-TiO2 phase diagram was studied with synthesis experiments between 1200°C and 1650°C, 1 atm and 28 kbar, investigating the effect of pressure on the compositions of rutile [TiO2], zirconia [ZrO2], and zirconium ...
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(2001)A synthesis of high-resolution (Chirp, 2-7 kHz) seismic profiles in the South Korea Plateau reveals that large masses of wavy stratified sediment (≈60-90 m thick) cover broad, gently sloping (<0·5°) ridges in water depths ...
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(2005)The high sensitivity of the satellite-transition (ST) MAS NMR technique was exploited to obtain high-resolution 17O MAS NMR spectra of the three polymorphs of Mg2SiO4: forsterite (α-Mg2SiO4), wadsleyite (β-Mg2SiO4), and ...
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(2004)A number of different geodynamic models have been proposed to explain the early tectonic evolution of the Baltic Shield. To provide additional geophysical constraints on these models, we performed a teleseismic tomography ...
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(2003)Assessment of contributions from shallow lithosphere to teleseismic wave front distortion is a prerequisite for high-resolution regional teleseismic tomography. Several methods have been proposed in the past for the ...
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(2006)Based on discrete samples, we report new high-resolution records of the ~ 185 kyr Iceland Basin (IB) geomagnetic excursion from Ocean Drilling Project (ODP) Site 1063 on the Bermuda Rise (sedimentation rate 32 cm kyr- 1) ...
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(2006)A high-resolution P wave tomographic model of the crust and mantle down to 1100 km depth under China and surrounding regions is determined by using about one million arrival times of P, pP, PP, and PcP waves from 19,361 ...
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(PANGAEA, 2011-05-07)This study describes detailed partitioning of phytomass carbon (C) and soil organic carbon (SOC) for four study areas in discontinuous permafrost terrain, Northeast European Russia. The mean aboveground phytomass C storage ...
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(2002)Palaeotemperature sensitive series from tree-rings, ice cores, corals and documentary sources are combined to producepalaeo summer-temperaturereconstructions (AD 1970-1761)and geographical eigenvector (EOF) maps in both ...
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(2004)Analyses of benthic foraminifera in sediment cores taken at about 1000 m water depth at the Yermak Plateau and the Barents Sea slope, adjacent to the position of the ice-sheet edge during the Last Glacial Maximum, show ...
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(2002)Oscillatory zoning in plagioclase is investigated at small scale (≤10 µm) using accumulated backscattered electron (BSE) images as high-resolution imaging method. Combined with electron microprobe quantitative analysis, ...
Now showing items 8327-8346 of 43490