Browsing by Title

HIGH-PRESSURE STRUCTURAL BEHAVIOUR OF SCOLECITE

Comodi P.; Gatta G.D.; Zanazzi P.F. (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 ...

HIGH-PRESSURE SYMPLECTITIC GARNET-CLINOPYROXENE-MARGARITE-MUSCOVITE-CLINOZOISITE AMPHIBOLITES OF THE DAKHOV BLOCK, NORTHERN CAUCASUS: GENESIS AND COMPOSITION OF REACTION TEXTURES

Korikovsky S.P.; Somin M.L.; Korsakov S.G. (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 ...

HIGH-PRESSURE TRANSFORMATIONS OF ILMENITE TO PEROVSKITE, AND LITHIUM NIOBATE TO PEROVSKITE IN ZINC GERMANATE

Yusa H.; Akaogi M.; Sata N.; Kojitani H.; Yamamoto R.; Ohishi Ya. (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 ...

HIGH-PRESSURE VEINS IN ECLOGITE FROM NEW CALEDONIA AND THEIR SIGNIFICANCE FOR FLUID MIGRATION IN SUBDUCTION ZONES

Spandler C.; Hermann J. (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 ...

HIGH-PT STUDY OF SOLID SOLUTIONS IN THE SYSTEM ZRO2-TIO2: THE STABILITY OF SRILANKITE

Troitzsch U.; Ellis D.J. (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 ...

HIGH-RESOLUTION (2-7 KHZ) ACOUSTIC AND GEOMETRIC CHARACTERS OF SUBMARINE CREEP DEPOSITS IN THE SOUTH KOREA PLATEAU, EAST SEA

Lee S.H.; Chough S.K. (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 ...

HIGH-RESOLUTION 17O MAS NMR SPECTROSCOPY OF FORSTERITE (α-MG2SIO4), WADSLEYITE (β-MG2SIO4), AND RINGWOODITE (γ-MG2SIO4)

Ashbrook S.E.; Berry A.J.; Hibberson W.O.; Steuernagel S.; Wimperis S. (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 ...

HIGH-RESOLUTION BODY WAVE TOMOGRAPHY BENEATH THE SVEKALAPKO ARRAY - II. ANOMALOUS UPPER MANTLE STRUCTURE BENEATH THE CENTRAL BALTIC SHIELD

Sandoval S.; Kissling E.; Ansorge J. (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 ...

HIGH-RESOLUTION BODY WAVE TOMOGRAPHY BENEATH THE SVEKALAPKO ARRAY: I. A PRIORI THREE-DIMENSIONAL CRUSTAL MODEL AND ASSOCIATED TRAVELTIME EFFECTS ON TELESEISMIC WAVE FRONTS

Sandoval S.; Kissling E.; Ansorge J. (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 ...

HIGH-RESOLUTION DATA OF THE ICELAND BASIN GEOMAGNETIC EXCURSION FROM ODP SITES 1063 AND 983: EXISTENCE OF INTENSE FLUX PATCHES DURING THE EXCURSION?

Knudsen M.F.; Mac Niocaill C.; Henderson G.M. (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) ...

High-resolution IP25-based reconstruction of sea-ice variability in the western North Pacific and Bering Sea during the past 18,000 years.

Méheust, Marie; Stein, Ruediger; Fahl, Kirsten; Max, Lars; Riethdorf, Jan-Rainer (PANGAEA, 2015-12-01)

HIGH-RESOLUTION MANTLE TOMOGRAPHY OF CHINA AND SURROUNDING REGIONS

Huang J.; Zhao D. (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 ...

High-resolution mapping of ecosystem carbon storage and potential effects of permafrost thaw in periglacial terrain, European Russian Arctic.

Hugelius, Gustaf; Virtanen, Tarmo A; Kaverin, Dmitry; Pastukhov, Alexander; Rivkin, Felix; Marchenko, Sergey; Romanovsky, Vladimir E; Kuhry, Peter (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 ...

HIGH-RESOLUTION MULTIPROXY CLIMATIC RECORDS FROM ICE CORES, TREE-RINGS, CORALS AND DOCUMENTARY SOURCES USING EIGENVECTOR TECHNIQUES AND MAPS: ASSESSMENT OF RECOVERED SIGNAL AND ERRORS

Fisher D.A. (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 ...

HIGH-RESOLUTION PALEOPRODUCTIVITY FLUCTUATIONS DURING THE PAST 24 KYR AS INDICATED BY BENTHIC FORAMINIFERA IN THE MARGINAL ARCTIC OCEAN

Wollenburg J.E.; Mackensen A.; Knies J. (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 ...

HIGH-RESOLUTION QUANTITATIVE IMAGING OF PLAGIOCLASE COMPOSITION USING ACCUMULATED BACKSCATTERED ELECTRON IMAGES: NEW CONSTRAINTS ON OSCILLATORY ZONING

Ginibre C.; Kronz A.; Worner G. (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, ...

HIGH-RESOLUTION RECORDS OF LOCATION AND STRATIGRAPHIC PROVENANCE FROM THE RARE EARTH ELEMENT COMPOSITION OF FOSSIL BONES

Trueman C.N.; Behrensmeyer A.K.; Potts R.; Tuross N. (2006)

Bone apatite acts as a natural, timed sampling device, scavenging trace elements from local pore waters over timescales of ca. 1-50 ka. The rare earth element (REE) and U/Th composition of fossil bones reflects associated ...

HIGH-RESOLUTION SEDIMENTARY RECORD IN A NEW BDP-99 CORE FROM POSOL'SK BANK IN LAKE BAIKAL

Bezrukova E.; Bukharov A.; Bychinsky V.; Colman S. (2004)

Another BDP drilling experiment was carried out in the winter of 1999 at 52degrees05'23"N-105degrees50'24" E, under 201 in of water, on the slope of the Posol'sk Bank, a submerged bottom rise in South Baikal. The -350 m ...

High-resolution seismic and ground penetrating radar - geophysical profiling of a thermokarst lake in the western Lena Delta, Northern Siberia.

Schwamborn, Georg; Rachold, Volker; Grigoriev, Mikhail N (PANGAEA, 2003-11-19)

HIGH-RESOLUTION SPECTROMETRIC ANALYSIS OF RARE EARTH ELEMENTS-ACTIVATED CATHODOLUMINESCENCE IN FELDSPAR MINERALS

Gotze J.; Habermann D.; Neuser R.D.; Richter D.K. (1999)

Cathodoluminescence (CL) investigations of igneous, metamorphic and sedimentary feldspars indicate that rare earth elements (REE)-activated CL in feldspars is more common than previously assumed. Hot-cathode CL microscopy ...

Browsing by Title

Browsing by Title

Search DSpace

Browse

All of DSpace

My Account