References
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The use of laboratory velocity data for estimating temperature and partial melt fraction in the low-velocity zone: Comparison with heat flow and electrical conductivity studies
Peridotite is widely considered to be the dominant component of the upper most mantle. Seismic velocities of a dry peridotite determined in the laboratory at high pressure and hypersolidus temperature show a rapid decrease with increasing temperature. The strong temperature dependence of velocities can be used to estimate temperature and melt fraction in the low-velocity zone of the Earth. The laboratory results show that the pressure dependence of both velocity and melt fraction appears to be well accounted for by the pressure dependence of the solidus temperature of the peridotite, i.e., homologous temperature dependence. This observation allows us to extrapolate …
Conductivite Thermique et champ de temperature dans les bassins sediment aires
New heat flow density measurements in the Jonian Sea
Geothermal measurements in a deep well at Regina, Saskatchewan
The University of Regina Geothermal Project was designed to demonstrate the use of moderate-temperature geothermal resources from sedimentary aquifers in heating large buildings. The first well was drilled on the campus of the University of Regina in the winter of 1979. Hydraulic potentials show that individual aquifers of the Basal Clastic Unit are not in direct hydraulic connection, and temperature measurements show that flow is occurring in the open hole. Apparent terrestrial heat flow varies vertically in the Upper Clastic Unit, showing either cross-formational water flow or errors in the measurement of thermal conductivity of shales. A reasonably uniform heat …
Heat flow measurments in the King George Basin, Bransfield Strait
Hydrogeothermal studies of the regions of Águas de Lindoia, Amparo e Socorro- Northeastern parts of the state of São Paulo
Heat flow measurement for the Jiangsi section of the quanzhou-heisui ggt
Heat flow, structure and evolution of the lithosphere of Mongolia
Heat flow and thermotectonic problems of the central Ventura Basin, southern California
Geophysical observations around the northern Yap Trench: seismicity, gravity and heat flow
Seismicity, gravity and heat flow measurements were taken around the northern Yap Trench, southwest of the Mariana Trench. Subduction of the Pacific Plate at the Yap Trench is thought to have been interrupted by collision of the Caroline Ridge since the Early Miocene. A large number of shallow seismic events were observed below the inner trench wall by four OBSH's deployed for 10 days in 1986. In contrast, only a small number of earthquakes is reported by the ISC (International Seismological Center) for the same area. Free air and Bouguer gravity anomaly profiles across the northern Yap Trench imply convergence …
Thermal evolution of lithosphere and processes in the earth interior
A heat flow profile across the Sverdrup Basin, Canadian Arctic Islands
Preliminary heat-flow density data from Tunisia and the Pelagian Sea
Heat flow and heat production in Brittany (western France)
Mise en évidence d'importantes variations régionales du flux de chaleur en Algérie
Rezul'taty geotermicheskih issledovanij pripoverhnostnyh otlozhenij Ekaterinoslavskoj ploshhadi (Results of geothermal studies of near-surface deposits of the Yekaterinoslav area )
Paleogeothermal influence on organic metamorphism in the neotectonics of the Japanese Islands
The paleogeothermal influence on the lowest grade metamorphic and diagenetic alteration of young sediments is discussed with special reference to the present conditions of the island arc system around Japan. Vitrinite reflectance (R0) is adopted to detect the thermal influence. The regional variation of R0 in certain horizons, the stratigraphic variation in steeply dipping successions and the depth variation in boreholes are investigated in Cenozoic sediments of specific tectonic situations of fore-arc and back-arc depressions in the northeastern and the southwestern Japan arcs. The results have revealed a zonal distribution of a contrasting pattern of organic metamorphism that underwent either …
Terrestrial heat flow in Finland, the central Fennoscandian Shield
Heat flow and the thermal origin of hot spot swells: The Hawaiian Swell revisited
We present 150 new heat flow measurements obtained at eight sites along a 1230-km-long profile across the Hawaiian Swell about 700 km ESE of Midway Island. Most of the measurements include in situ thermal conductivity determinations, which helped to reduce the statistical uncertainties (95% confidence) at all sites to <±2.l mW m?2. Surprisingly, there is no systematic variation in heat flow across the axis of the swell. With one exception, the mean heat flow (corrected for sedimentation) at each site is within ±10% of the mean value of 57.7±4.3 (S.D.) mW m?2 for all sites. At the two sites …