Browsing by Title
- DSpace Home
- →
- Browsing by Title
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing by Title
Now showing items 15905-15924 of 39126
-
(2001)The thermal thickness of Precambrian lithosphere is modeled and compared with estimates from seismic tomography and xenolith data. We use the steady state thermal conductivity equation with the same geothermal constraints ...
-
(PANGAEA, 2003-03-20)
-
(2004)Chloritized annite from the Irizar granite has been used for laser-heating experiments, following the procedures used for 40Ar-39Ar dating (heating steps in the 600-1080 °C temperature range). Four runs, at different ...
-
(2002)Variations in mantle temperatures cause changes in seismic wave speeds and changes in the pressure at which mineralogical reactions occur, changing the depth at which a seismic discontinuity occurs. As an experiment in ...
-
(2004)Hazardous gravitational collapses involving hot lava domes can be triggered by intense rainfall, both in periods of active dome growth and volcanic repose. The collapses can evolve into energetic failures involving as much ...
-
(1999)We studied for the first time the effects of low-temperature plasticity on the formation of shear zones. A thermal-mechanical model has been developed for describing the shear deformation of Maxwell viscoelastic material ...
-
(1998)Thermal-neutron fluences in soil are reported for selected fast-neutron sources, selected soil types, and selected irradiation geometries. Sources include 14 MeV neutrons from accelerators, neutrons from spontaneously ...
-
(2001)Intra-continental deformation of soft zones during continental collision requires weak continental lithosphere which is able to be shortened across considerable width during later convergence. This enables significant ...
-
(2003)We present the results of a thermo-mechanical modelling study carried out to investigate the effect of pre-rift rheology on subsequent basin (de)formation in the Black Sea area. Important differences are inferred for the ...
-
(1987)It is shown that the depth factor affected the mode and the conditions of mineragenesis, so that thermobarogeochemical tests would be just as useful as geologic and mineralogic evidence as reliable indicators of the ...
-
(1989)We studied quartzite in order to find new ways of reconstructing its primary nature. For this purpose, we chose the quartzites that are widespread in the central part of the Mongolia-Okhotsk mobile belt in virtually all ...
-
(2003)Compositionally heterogeneous material may exist in the lowermost mantle [van der Hilst and Karason, Science 283 (1999) 1885-1888]. Here we use a numerical model to investigate the dynamics of (i) the subducted oceanic ...
-
(1986)Thermochemical data on several phases forming in the system CaO-MgO-Al2O3-SiO2 have been tested for consistency in reproducing experimental phase equilibrium relationships. Calorimetric data on enthalpy, entropy and heat ...
-
(1997)New experimental data on the heat capacities, enthalpies of dehydration and formation of some fibrous zeolites have been obtained. Natural samples of zeolites of the natrolite group including natrolite Na2Al2Si3O10 · 2H2O, ...
-
(2001)Calorimetric measurements were made on natural samples of heulandite having the composition Ca0.86Na0.37K0.06Al2.14Si6.86O18·6.1H2O and stilbite Ca1.01Na0.12Al2.12Si6.88O18·7.27H2O both from the same locality (Nidym River, ...
-
(1996)Thermodynamic properties of the natural calcium zeolites laumontite, leonhardite, dehydrated leonhardite (metaleonhardite), wairakite, and yugawaralite were studied by calorimetry in lead borate solvent at 975 K. Enthalpies ...
-
(1997)The enthalpy of drop solution of a quickly quenched, clear, titanite glass sample and several synthetic, polycrystalline, samples was measured in a Calvet-type calorimeter in 2PbO.B 2 O 3 solvent at 702 degrees C. The ...
-
(1995)We report experimental brackets (150-350°C, evacuated silica tubes) on (1) Ag-Cu partitioning between hexagonally close packed (hcp)-, face centered cubic (fcc)-, and body centered cubic (bcc)-(Ag, Cu)2S sulfides and the ...
-
(1997)Enthalpies of formation, ΔHf, of the double carbonates K2Ca(CO3)2 (with two polymorphs, bütschliite and fairchildite) and K2Ca2(CO3)3 from the components K2CO3 and CaCO3 were determined at 298 K by drop solution calorimetry ...
Now showing items 15905-15924 of 39126