Literature Review
The Global Heat Flow Database (GHFDB) is committed to maintaining the highest standards of data quality. To achieve this, we have implemented a rigorous literature review process that ensures all datasets are thoroughly vetted before being made publicly available. To learn more about the review process and how you can contribute, please click the button below.
Teplovoj potok v kajnozojskih riftovyh zonah Vostochnogo Kitaja (Heat Flow in Cenozoic Rifts in East China )
Anomalous geothermal regime, seismic, and gravitational landslide activity in the northeastern part of the Black Sea continental slope
Results of the 6th cruise of R/V "Academic Lavrentiev" in 1987
Heat flow in the Nipigon arm of the Keweenawan rift, northwestern Ontario, Canada
In the Archean Superior Province, the Nipigon Embayment, in the area of Lake Nipigon north of Lake Superior, is covered by MidProterozoic sediments intruded by Keweenawan diabase sills. It has been interpreted as a failed arm of the ca. 1100 Ma Keweenawan rift. Six new heat flow values in this area show that the region of low heat flow associated with the Keweenawan rift in Lake Superior extends northwards along the western margin of the Nipigon Embayment. The average heat flow in the Nipigon area (39 +/- 5 mWm(-2)) is only slightly lower than that of the adjacent western Superior …
Present-day heat flow, thermal history and tectonic subsidence of the East China Sea Basin
The East China Sea Basin is located in the convergence area between the Eurasian plate, the Pacific plate and the Philippine Sea plate, and consists of two depressions. the Taibei Depression in the west and the Xihu Depression in the east. Heat flow measurements show that the East China Sea Basin is characterized by present-day heat flow around 70.6 mW/m(2), varying between 55 and 88 mW/m(2). No significant difference in heat flow is observed between the Xihu and the Taibei Depressions. Thermal history reconstruction using vitrinite reflectance suggests that the thermal history was, however, different in the Taibei and the …
Re-evaluation of heat flow data near Parkfield, CA: Evidence for a weak San Andreas Fault
Improved interpretations of the strength of the San Andreas Fault near Parkfield, CA based on thermal data require quantification of processes causing significant scatter and uncertainty in existing heat flow data. These effects include topographic refraction, heat advection by topographically-driven groundwater flow, and uncertainty in thermal conductivity. Here, we re-evaluate the heat flow data in this area by correcting for full 3-D terrain effects. We then investigate the potential role of groundwater flow in redistributing fault-generated heat, using numerical models of coupled heat and fluid flow for a wide range of hydrologic scenarios. We find that a large degree of …
unpublished data
Absence of a regional surface thermal high in the Baikal rift - new insights from detailed contouring of heat flow anomalies
Heat flow in active tectonic zones as the Baikal rift is a crucial parameter for evaluating deep anomalous structures and lithosphere evolution. Based on the interpretation of the existing datasets, the Baikal rift has been characterized in the past by either high heat flow, or moderately elevated heat flow, or even lacking a surface heat flow anomaly. We made an attempt to better constrain the geothermal picture by a detailed offshore contouring survey of known anomalies, and to estimate the importance of observed heat flow anomalies within the regional surface heat output. A total of about 200 new and close-spaced …
Ozero Issyk-Kul' (Tjan'-Shan'): neobychno nizkij teplovoj potok v aktivnoj mezhgornoj kotlovine (Lake Issyk-Kul (Tien Shan): Unusually low heat flow in an active intermontane basin )
New geothermal data are presented for Lake Issyk-Kul, a mountain lake in the nor-them Tien Shan, Central Asia. With 40 successful measurements done, the average heat flow is 48.3 mW/m(2). This is 10 to 20 mW/m(2) lower than estimates from previous surveys. Data from boreholes on the shores of the lake revealed an average heat flow of 54 mW/m(2). All these values are remarkably low for an actively deforming area such as the Tien Shan. Two qualitative geodynamical models are suggested to explain these observations. If there is crustal thickening beneath Issyk-Kul, the low heat flow can only be explained …
High-resolution heat flow density in the lower Congo basin
Heat flow density (HFD) has been derived in the lower Congo basin from 293 conventional probe measurements, 424 oil exploration data, and about 1,000,000 Bottom Simulating Reflector (BSR) values. Each set of data provides independent estimates of temperature gradients associated with specific uncertainties and geographic distributions, but a statistical comparison in overlapping domains shows a relatively good consistency. In situ conductivity has been measured in conventional surveys and estimated from rock composition and porosity in oil exploration boreholes: in the deep offshore, measurements and estimates are consistently low and increase significantly toward the shelf domain. Thermal conductivity does not change …
Dynamics of gas hydrate: case of the Congo continental slope
A numerical model is developed to study the temperature effect on stability and phase transformation of gas-hydrate. The model uses a mathematical formulation based on the enthalpy form of the conservation law of energy. The use of the enthalpy form instead of the temperature form as often done in the literature has made the problem numerically simpler. The model is then applied to describe the effect of sea bottom temperature variations on the stability of gas hydrate occurrences and on the seafloor reflectivity in sediments of the Congo continental slope. Indeed, a migrating seafloor reflectivity front is observed on 3D …
Heat flow through a basaltic outcrop on a sedimented young ridge flank
One hundred seven thermal gradients were measured in shallow surface sediments using the submersible Alvin within a 0.5 km(2) area on and around the 65-m-high, mostly sediment-covered Baby Bare outcrop located on the eastern flank of the Juan de Fuca Ridge. Heat flow values range from 0.35 W m(-2), which is close to the average value (0.27 W m(-2)) for the sediment-buried 3.5-Myr-old crust surrounding the outcrop, to as high as 490 W m(-2). Some measurements are purely conductive, whereas others are consistent with upward fluid seepage through this sediment layer. Highest heat flow values are found roughly 10 m …
The influence of basement on surface heat flow in the Cooper Basin
This paper describes the results of an investigation into the surface heat flow distribution around GEL-99, a Geothermal Exploration Lease granted to Scopenergy Limited by the South Australian Government. I collated temperature and thermal conductivity data from a number of sources in order to construct one-dimensional thermal models of 30 petroleum industry wells. The data indicate a marked thermal conductivity contrast between the base of the Eromanga Basin sequence and the Cooper Basin sequence, resulting in a relatively high thermal gradient in the latter. Observed drill stem test temperatures support this prediction. Vertical heat flow within GEL-99 ranges from about …
personal communication
Costa Rica Rift revisited: Constraints on shallow and deep hydrothermal circulation in young oceanic crust
New heat-flux observations made along two seismic reflection profiles on 6 Ma crust of the Costa Rica Rift flank show an inverse correlation between heat-flux and sediment thickness similar to that observed on other sedimented ridges and young ridge flanks. Extrapolation of the seafloor heat-flux values to the top of the igneous crust-justified by comparing seafloor and borehole determinations where observations are colocated-shows the surface of the crust to be of uniform temperature despite large local sediment thickness variations. This is consistent with observations made at DSDP/ODP Holes 504B and 896A where basement temperatures are observed to differ by less …
Personal communication, 1996. In: CD Rom: Geothermal Gradient and Heat Flow Data in and around Japan. Geological Survey of Japan, AIST, 2004
personal communication, In: CD Rom: Geothermal Gradient and Heat Flow Data in and, around Japan. Geological Survey of Japan, AIST, 2004
Heat flow and deep lithospheric thermal structure at Lac de Gras, Slave Province, Canada
Temperature measurements in two drill holes near Lac de Gras in the Slave Province of the Canadian Shield yield heat flow values of 43 +/- 5 and 48 +/- 8 mW m(-2) with an average of 46 +/- 6 mW m(-2). Heat production measured on samples from one of these holes is relatively high (1.9 muW m(-3)) confirming measurements made on outcrop samples. The surface heat flow and heat generation data imply that below a 10 km thick radioelement enriched layer, heat production is comparable to that in other Archean Provinces of the Canadian Shield. The lithospheric geotherm is very …
Study on the Thermal Evolution and Reservoir History in Hailar Basin
Fluid flow through active mud Dome Mound Culebra offshore Nicoya Peninsula, Costa Rica: evidence from heat flow surveying
Mud extrusion is frequently observed as a dewatering phenomenon in compressional tectonic settings such as subduction zones. Along the Middle American Trench, several of these features have been recently discovered. This paper presents a heat flow study of actively venting Mound Culebra, offshore Nicoya Peninsula, and is complemented by data from geophysical surveys and coring. The mud diapir is characterised by methane emission and authigenic carbonate formation at its crest, and is composed of overconsolidated scaly clays and clast-bearing muds. Compared with the conductive background heat flow, the flux through the mud dome is elevated by 10-20 mW/m(2), possibly related …