Terrestrial heat flow of continental China: Updated dataset and tectonic implications

Jiang, Guangzheng; Hu, Shengbiao; Shi, Yizuo; Zhang, Chao; Wang, Zhuting; Hu, Di

doi:10.1016/j.tecto.2019.01.006

Cited by 263 publications

(220 citation statements)

References 51 publications

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“…Gong [40] studied Bohai Bay basin heat flow and found that it was in the range of 43.9-90 mW/m 2 with an average heat flow of 61.1 ± 9.4 mW/m 2 . Jiang et al [39] and Jiang et al [43] calculated average heat flows for mainland China of 60.9 and 60.2 mW/m 2 , respectively, indicating that the Bohai Bay basin's heat flow was higher than that of mainland China but lower than the average global heat flow of 65 ± 1.6 mW/m 2 estimated by Pollack et al [44]. We collected heat flow of 233 wells in and around the study area [42,43,[45][46][47][48][49][50], and found that it was distributed zonally in the longitudinal direction (Figure 1b Huang [32] pointed out that the heat flow in sedimentary layers is mainly related to the sedimentary environment and was unaffected by deep tectonic and lithospheric thermal structures.…”

Section: Contribution Of Sediments To Surface Heat Flowmentioning

confidence: 99%

“…From the parameters provided in Table 5, crustal heat flows in the western sag, central salient, and eastern sag tectonic areas were 27, 26.2, and 25.5 mW/m 2 , respectively, and the respective conductive terrestrial heat flows were 59, 60.2, and 58.5 mW/m 2 , respectively ( Figure 6). The observed heat flow distribution in the study area [43,45,47,71] revealed a slight higher heat flow in the Bohai Bay basin comparing to the mainland China, with an average value of 68.9 mW/m 2 [43,45], but a normal heat flow in the Jizhong depression, with an average value of 63.1 mW/m 2 , which may represent the regional thermal background [47]. Specific to the Jizhong depression, low heat flow is obviously distributed in the sub-depressions, the heat flow in the main area of Baxian, Raoyang, Baoding, and Xushui sags are lower than 60 mW/m 2 (i.e., 48.9-61.6 mW/m 2 in the Baxian sag) [45,47,71] (Figure 1b).…”

Section: Crust Heat Flow Contribution and Terrestrial Heat Flowmentioning

confidence: 99%

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Radioactive Heat Production and Terrestrial Heat Flow in the Xiong’an Area, North China

et al. 2019

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Herein, integrated heat production analysis in the Xiong’an area was conducted by measuring uranium, thorium, and potassium in different rock types to clarify crust heat flow contribution, simulate the conductive terrestrial heat flow, and illustrate heat source mechanisms of Xiong’an area geothermal resources. The study area was divided into three lithosphere structure types from west to east, and heat production corresponded to layer thickness and heat production with the central area having thicker crust and lower heat production than the eastern and western areas. Crustal heat production, mantle heat flow, and crust–mantle heat flow ratio reveal a ‘cold crust-hot mantle’ in the Xiong’an area.

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Section: Contribution Of Sediments To Surface Heat Flowmentioning

confidence: 99%

Section: Crust Heat Flow Contribution and Terrestrial Heat Flowmentioning

confidence: 99%

Radioactive Heat Production and Terrestrial Heat Flow in the Xiong’an Area, North China

et al. 2019

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“…In the 2000s, the depletion of conventional oil reserves has stimulated the research on deep continental margins, including acquisition of new heat flow measurements (Calvès et al, ; Lucazeau et al, ; Lucazeau et al, ; White et al, ); processing of oil exploration data to derive heat flow has also been improved by new techniques for estimating thermal conductivity from geophysical logs (Fuchs & Förster, ; Goutorbe et al, ; Hartmann et al, ) or correcting bottom hole temperatures (Goutorbe et al, ). On land, several teams have maintained measurements activity (Mareschal & Jaupart, ), and several regional compilations have identified heat flow data not included in Pollack's compilation (Blackwell & Richards, ; Hu et al, ; Jiang et al, ; Jiang et al, ; Tanaka et al, ).…”

Section: Introductionmentioning

confidence: 99%

Analysis and Mapping of an Updated Terrestrial Heat Flow Data Set

Lucazeau

2019

Geochem Geophys Geosyst

165

169

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The number of heat flow measurements at the Earth surface has significantly increased since the last global analysis (Pollack et al., 1993, https://doi.org/10.1029/93RG01249), and the most recent of them provide insights into key locations. This paper presents a new compilation, which includes approximately 70,000 measurements. Continental heat flow (67 mWm−2) does not change significantly, but the differences are more important for oceanic heat flow. The divergence with conductive cooling models is reduced significantly for young ages of the seafloor, since the most recent measurements (92 mWm−2) are significantly higher on average than the older ones (79 mWm−2). This is related to a better quality and a better sampling of measurements in regions affected by hydrothermal circulation. The total Earth heat loss derived from these most recent measurements is estimated to ∼40–42 TW and represents only 3–5 TW less than with a conductive cooling model (∼45–47 TW). Hydrothermal heat loss in the oceanic domain is estimated with a new method based on the ruggedness of the seafloor and represents ∼1.5 TW more than previous estimates. The heat flow variability on continents is so large that defining a trend with stratigraphic or tectono‐thermal age is difficult and makes extrapolation from age a poor predictor. On the other hand, additional geological and geophysical information can be combined with age for better predictions. A generalized similarity method was used here to predict heat flow on a global 0.5° × 0.5° grid. The agreement with local measurements is generally good and increases with the number and quality of proxies.

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“…However, the extraction depths (or equilibrium pressure) of xenoliths can often be estimated by plotting their equilibrium temperatures on a geotherm derived from surface heat flow data, because heat flow is a key parameter used to constrain lithospheric thermal structures [73]. Thus, we estimated the extraction depths (or equilibrium pressures) of the Baekdusan peridotite xenoliths (Figure 7) by plotting their equilibrium temperatures (T Two-Pyx ; two-pyroxene geothermometer; Table 1) on the geotherm of the Bohai Bay Basin in the NCC [74]; this is one of the few available datasets in the vicinity of the Baekdusan volcano. For the coarse-granular (T Two-Pyx : 992 • C) and fine-granular (T Two-Pyx : 845-855 • C) peridotites, we obtained extraction depth ranges of approximately 50-55 km and 40-45 km, respectively (Figure 7).…”

Section: Petrogenesis and Evolution Of Deformation Fabrics Of The Baementioning

confidence: 99%

Evolution of Deformation Fabrics Related to Petrogenesis of Upper Mantle Xenoliths Beneath the Baekdusan Volcano

2020

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Knowledge of the formation and evolution of cratonic subcontinental lithospheric mantle is critical to our understanding of the processes responsible for continental development. Here, we report the deformation microstructures and lattice preferred orientations (LPOs) of olivine and pyroxenes alongside petrological data from spinel peridotite xenoliths beneath the Baekdusan volcano. We have used these datasets to constrain the evolution of deformation fabrics related to petrogenesis from the Baekdusan peridotites. Based on petrographic features and deformation microstructures, we have identified two textural categories for these peridotites: coarse- and fine-granular harzburgites (CG and FG Hzb). We found that mineral composition, equilibrium temperature, olivine LPO, stress, and extraction depth vary considerably with the texture. We suggest that the A-type olivine LPO in the CG Hzb may be related to the preexisting Archean cratonic mantle fabric (i.e., old frozen LPO) formed under high-temperature, low-stress, and dry conditions. Conversely, we suggest that the D-type olivine LPOs in the FG Hzb samples likely originated from later localized deformation events under low-temperature, high-stress, and dry conditions after a high degree of partial melting. Moreover, we consider the Baekdusan peridotite xenoliths to have been derived from a compositionally and texturally heterogeneous vertical mantle section beneath the Baekdusan volcano.

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Terrestrial heat flow of continental China: Updated dataset and tectonic implications

Cited by 263 publications

References 51 publications

Radioactive Heat Production and Terrestrial Heat Flow in the Xiong’an Area, North China

Radioactive Heat Production and Terrestrial Heat Flow in the Xiong’an Area, North China

Analysis and Mapping of an Updated Terrestrial Heat Flow Data Set

Evolution of Deformation Fabrics Related to Petrogenesis of Upper Mantle Xenoliths Beneath the Baekdusan Volcano

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