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Radiogenic heat production variations in the Gonghe basin, northeastern Tibetan Plateau: Implications for the origin of high-temperature geothermal resources
Zhang, Chao1,2; Hu, Shengbiao3; Zhang, Shengsheng4; Li, Shengtao5; Zhang, Linyou5; Kong, Yanlong3; Zuo, Yinhui1,2; Song, Rongcai1,2; Jiang, Guangzheng3; Wang, Zhuting3
2020-04-01
Source PublicationRENEWABLE ENERGY
ISSN0960-1481
Volume148Pages:284-297
AbstractHot dry rock is an almost inexhaustible source of geothermal energy. Since the first attempt to extract thermal energy from hot dry rock in America in the 1970s, successive studies have been conducted in many countries. Recently, high-temperature rock (exceeding 180 degrees C) was drilled in the Gonghe basin, northeastern Tibetan Plateau, marking a significant breakthrough in the exploration of hot dry rock resources in China. A proper understanding of the origin of the hot dry rock in the Gonghe basin is essential to the evaluation of the geothermal resource potential and to the establishment of an enhanced geothermal system in the basin. In the present research, we attempt to seek clues from the radiogenic heat production of the rocks. In all, 52 core samples collected from the main boreholes in the Gonghe basin were measured for the concentrations of radioisotopes. The heat production values were determined to be 1.21-2.02 mu W m(-3) for the sedimentary rocks, yielding an arithmetic mean of 1.67 +/- 0.29 mu W m(-3), and 1.17-5.81 mu W m(-3) for the basal granitic rocks, yielding a mean of 3.20 +/- 1.07 mu W m(-3). The results show that the radiogenic heat production of the granitic rocks is approximately that of global Mesozoic-Cenozoic granites, which is further corroborated by an extensive compilation of heat production data for granitic rocks in the immediate vicinity of the study area (average of 2.07 +/- 0.97 [LW m(-3), n = 136). Based on the heat production data sets combined with available geological and geophysical information, the crustal heat production contribution is determined. The results show that the heat contribution from the crust is about 48.3 mW m(-2), accounting for similar to 47.3% of terrestrial heat flow. Compared with the regional background heat flow, the high heat flow in the Gonghe basin may be attributed to an additional heat flow contribution (similar to 27 mW m(-2)) from a heat anomaly (probably related to partial melting) at shallow depth, which is evidenced by the low-resistivity anomalies in the magnetotelluric survey results. Thus, this study emphasizes that the anomalous heat flow and the hot dry rock geothermal resources in the Gonghe basin may be the combined effects of the radiogenic heat contribution from the thickened crust and the heat contribution from a local heat anomaly beneath the Gonghe basin. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordHot dry rock Radiogenic heat production Heat flow Crustal heat contribution Heat anomaly Gonghe basin
DOI10.1016/j.renene.2019.11.156
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS KeywordLITHOSPHERIC THERMAL STRUCTURE ; NORTH CHINA CRATON ; ISOTOPIC COMPOSITIONS ; POWER-GENERATION ; CONTINENTAL AREA ; QINGHAI PROVINCE ; FLOW ; SYSTEM ; PETROGENESIS ; GEOCHRONOLOGY
Language英语
Funding ProjectNational Key Research and Development Program of China[2018YFB1501801]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS Research AreaScience & Technology - Other Topics ; Energy & Fuels
WOS SubjectGreen & Sustainable Science & Technology ; Energy & Fuels
WOS IDWOS:000510524900024
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95675
Collection岩石圈演化国家重点实验室
Corresponding AuthorZhang, Chao
Affiliation1.Chengdu Univ Technol, Coll Energy, Chengdu 610059, Sichuan, Peoples R China
2.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Sichuan, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Survey Inst Hydrogeol Engn Geol & Environm Geol Q, Xining 810008, Peoples R China
5.China Geol Survey, Ctr Hydrogeol & Environm Geol Survey, Baoding 071051, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Chao,Hu, Shengbiao,Zhang, Shengsheng,et al. Radiogenic heat production variations in the Gonghe basin, northeastern Tibetan Plateau: Implications for the origin of high-temperature geothermal resources[J]. RENEWABLE ENERGY,2020,148:284-297.
APA Zhang, Chao.,Hu, Shengbiao.,Zhang, Shengsheng.,Li, Shengtao.,Zhang, Linyou.,...&Wang, Zhuting.(2020).Radiogenic heat production variations in the Gonghe basin, northeastern Tibetan Plateau: Implications for the origin of high-temperature geothermal resources.RENEWABLE ENERGY,148,284-297.
MLA Zhang, Chao,et al."Radiogenic heat production variations in the Gonghe basin, northeastern Tibetan Plateau: Implications for the origin of high-temperature geothermal resources".RENEWABLE ENERGY 148(2020):284-297.
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