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.
The surface heat flow of the Arabian Shield in Jordan
Surface heat flow in southern Jordan (western part of the Arabian Plate) was determined in a dense cluster of five, up to 900-m-deep boreholes that have encountered sedimentary rocks of Paleozoic (Ordovician and Silurian) age. These rocks are underlain by an igneous and metamorphic basement, which has been studied for its radiogenic heat production, along the eastern margin of the Dead Sea Transform (DST) fault system. The heat flow, calculated from continuous temperature logs and laboratory-measured thermal conductivity of drillcores and surface samples, averages to 60.3 +/- 3.4 mW m(-2) and contrasts the common view of the late Proterozoic-consolidated Arabian …
Time-dependent thermal state of the lithosphere in the foreland of the Eastern Carpathians bend. Insights from new geothermal measurements and modelling results
The time-dependent heat budget, thermal evolution and rheology of the lithosphere in the last 13 Myr, along a 120 km long profile in the foreland of the Eastern Carpathians bend is presented. The study area, a complex tectonic environment in the vicinity of the well-known intermediate-depth seismogenic Vrancea zone, includes the deepest sedimentary basin in Romania (∼18 km), with a recent rapid evolution in the last 13 Myr (8 km of sediments). Detailed high-resolution temperature logs in the depth ranges from 0–700 m to 0–2400 m in eight thermally stabilized boreholes, together with logging and geological information on structure, lithology …
Geotermicheskij rezhim i geodinamika severnoj chasti Tihogo okeana (Geothermal regime and geodynamics of the North Pacific Ocean )
Comparison of several BHT correction methods: a case study on an Australian data set
Bottom-hole temperatures (BHT) from oil exploration provide useful constraints on the subsurface thermal regime, but they need to be corrected to obtain the equilibrium temperature. In this work, we introduce several BHT correction methods and compare them using a large Australian data set of more than 650 groups of multiple BHT measurements in about 300 oil exploration boreholes. Existing and suggested corrections are classified within a coherent framework, in which methods are divided into: line/cylinder source; instantaneous/continuous heat extraction; one/two component(s). Comparisons with reservoir test temperatures show that most of the corrections lead to reliable estimates of the formation equilibrium …
Heat-flow revisited on the eastern canadian shield shelf
Heat transfer processes in the upper crust: influence of structure fluid flow, and paleoclimate
Heat flow and surface hydrocarbons on the Brunei continental margin
Simultaneous heat flow and geochemical gravity coring data from 186 sites on the Brunei margin reveal abundant thermogenic hydrocarbons in the landward half of our study area, where the mean heat flow is 83.7 +/- 66.5 mW/m(2). Seaward, the mean heat flow is 59.0 +/- 22.6 mW/m(2) and surface thermogenic hydrocarbons are largely absent. In accord with active accretionary complexes, the low-heat-flow zone coincides with the Palawan (northwest Borneo, Nansha) Trough paleosubduction zone. The high-heat-flow zone of hydrothermal convection and hydrocarbon seepage coincides with the landward, land-derived Baram delta sediments, constituting a pseudo- accretionary prism. The transition from oil to …
La transition océan-continent á l'échelle de la convection: méthodologie, observations et modélisation
Heat flow in the Republic of Korea
(1) We report 111 new heat flow data in the Republic of Korea and combine these with previously reported 248 heat flow data to construct the heat flow map of the Republic of Korea. The mean geothermal gradient of the Republic of Korea is 25.1 degrees C/ km; mean heat flow of the Republic of Korea is 60 +/- 11 mW/m(2). The southeastern part, the central western part, and the northeastern part of the Republic of Korea show high heat flow values. In terms of the lithology, heat flow is 71 +/- 2 mW/m(2) for the area of sedimentary rock, …
Marine Heat Flow Measurements in Hard Ground Offshore Sumatra
Heat flow of the eastern Canadian rifted continental margin revisited
Continental shelves are regions where heat flow is not measured directly by conventional marine techniques, but estimated from oil exploration data with possible bias. In order to overcome this problem, we recently proposed a method based on neural networks (Geophys J Int 2006, 166:115) that provides better constraints on thermal conductivity: it allowed us to derive 161 heat flow estimates on the eastern margin of Canada, where previous studies had concluded to the existence of heat flow higher than that in the adjacent continent and ocean. We conversely found rather homogeneous values (similar to 45-55 mW m(-2)) all along and …
New heat flow data from south-eastern South Australia
Heat flow has been measured in south-east South Australia at a spatial resolution greater than previously available. The study area contains the Southern Murray Basin, Padthaway Ridge, and Western Otway Basin. An extensive network of groundwater observation wells across the study area was used, along with several petroleum wells in the Otway Basin, to measure thermal gradients and calculate 24 new heat flow values. Geothermal gradients were either measured directly using a cable, winch, and thermistor in cased or open holes with standing water, or by estimating average geothermal gradients from petroleum well completion temperature data. Thermal conductivity values were …
The thermal state if 18-24 Ma upper lithosphere subducting below the Nicoya Peninsula, Northern Costa Rica Margin
Strong heat flow variability in an active shallow gas environment, Dnepr palaeo-delta, Black Sea
The Dnepr palaeo-delta on the north-western continental slope of the Black Sea is a prolific seepage zone characterised by a highly variable heat flow ranging from 24 to 88 mW/m(2). New thermal data were collected at 33 closely spaced stations in order to better understand the apparent relation between heat flow variability and seepage features. Strong relief gradients and associated landslide shaping may explain first-order heat flow variability but, locally, thermal parameters appear to be controlled by fluid and gas migrations. High heat flow anomalies are found at sites where faults and diapirs offer pathways for warm fluid flow from …
Marine heat flow measurements in the Xisha Trough, South China Sea
Report and preliminary results of poseidon cruise P336: Crests-Cretan Sea tectonics and sedimentation
Present-day geothermal characteristics in south China
Based on 418 geothermal gradients and 418 heat flow values from South China, both the geothermal gradient map and the heat flow map of South China have been constructed. The present-day distributions of geothermal gradient and heat flow have been analyzed. Statistical analysis of the geothermal gradient data show that the geothermal gradients in South China range from 7.82 to 162.5 degrees C/km with a mean of 24.1 degrees C/km. The southeast coastal regions and southwestern Yunnan are characterized by relatively higher temperature gradients than that of Yangtze,block. The geothermal gradients are controlled by tectonothermal settings and significantly affected by …
Heat flow and geothermal field in the Qinshui Basin
Based on temperature logging data of 20 boreholes and thermal conductivities of 39 rock samples, 20 heat flow values are calculated for the Qinshui Basin, Shanxi Province, China. The results show that the heat flow values range from 44.8 mW/m(2) to 101.8 mW/m(2), with the average 62.7 +/- 15.2 mW/m(2), and that the present geothermal gradient varies from 20.9 degrees C/km to 47.6 degrees C/km with the mean value of 28.2 +/- 10.3 degrees C/km in the basin. Similarities of the distribution of heat flow to that of coal-bed methane-bearing capacity of the upper and the lower coal beds in …
Geothermal evidence for fluid flow through the gas hydrate stability field off Central Chile-transient flow related to large subduction zone earthquakes?
Liquefied vs stratified sediment mobilization processes: Insight from the South of the Barbados accretionary prism
This paper discusses the nature and origin of subsurface sediment mobilization processes in deep marine clay-rich environments. In the studied area of the southern Barbados accretionary prism, new geophysical acquisitions have emphasized the spectacular widespread development of mud volcanoes that are well-developed along ramp anticlines and along sigmoidal rises with trends that are oblique to the axes of the main folds of the accretionary wedge. On some active mud volcanoes, heat-flow measurements show high positive anomalies related to high fluxes of mud transfer. The mobilized solid fraction expelled by the mud volcanoes does not originate from a unique source bed …