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学者姓名：黎敦朋
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Abstract ：
下渡组是福建省西部晚中生代重要的火山岩岩石地层单元之一.下渡组的年代归属和岩石成因仍不明确,制约了区域地层的划分对比.本文以永安鸬鹚坪下渡组火山岩为研究对象,开展LA-ICP-MS锆石U-Pb年龄测定、全岩主微量元素和Sr-Nd同位素分析,探讨永安市鸬鹚坪下渡组的形成时代、岩石成因与构造环境.下渡组岩性主要以流纹质为主的角砾凝灰岩、熔结角砾凝灰岩、熔结凝灰岩和凝灰岩等,偶夹凝灰质砂岩、凝灰质泥岩等.本文年代学研究获得下渡组顶部凝灰岩年龄为130.4±1.5 Ma;综合前人的年龄资料,下渡组应形成于晚侏罗世—早白垩世.全岩主微量元素分析结果表明,凝灰岩具有高硅[w(SiO2)=71.40%～73.40%]、富铝[w(Al2O3)=13.70%～14.85%]、富碱[w(K2O+Na2O)=5.91%～9.75%]、贫钛[w(TiO2)=0.21%～0.38%]、贫镁[w(MgO)=0.05%～0.65%]等特征,属于高钾钙碱性系列-钾玄岩系列酸性火山岩;富集大离子亲石元素Rb,Th,U,K及轻稀土元素,亏损高场强元素Nb,Ta,P,Ti及重稀土元素,具有明显的Eu负异常.全岩Sr-Nd同位素分析结果显示,εNd(t)为-12.17～-9.94,TDM2 为 1 659～1 507 Ma.本文认为下渡组火山岩形成于晚侏罗世—早白垩世古太平洋板块向欧亚大陆板块俯冲的活动大陆边缘挤压环境,岩浆主要起源于元古代下地壳的部分熔融,并经历了中上地壳的混染.
Keyword ：
下渡组 下渡组 地球化学 地球化学 年代学 年代学 火山岩 火山岩 福建省西部 福建省西部
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| GB/T 7714 | 付一航 , 黎敦朋 , 杨小敏 et al. 福建省永安市上侏罗统-下白垩统下渡组火山岩年代学和地球化学特征 [J]. | 成都理工大学学报（自然科学版） , 2025 , 52 (4) : 315-329 . |
| MLA | 付一航 et al. "福建省永安市上侏罗统-下白垩统下渡组火山岩年代学和地球化学特征" . | 成都理工大学学报（自然科学版） 52 . 4 (2025) : 315-329 . |
| APA | 付一航 , 黎敦朋 , 杨小敏 , 陈楠 . 福建省永安市上侏罗统-下白垩统下渡组火山岩年代学和地球化学特征 . | 成都理工大学学报（自然科学版） , 2025 , 52 (4) , 315-329 . |
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Fozi Mountain National Geopark is located in Zhenghe County in the northern region of Fujian Province, where the volcanic rocks of the Zhaixia Formation of the Shimaoshan Group are exposed. Zircon U-Pb dating and geochemical analysis were carried out to constrain its age and tectonic environment. The results show that three zircon U-Pb dating samples have attained ages of 99.2 +/- 1.0 Ma, 99.6 +/- 0.8 Ma, and 99.7 +/- 2.0 Ma. Volcanic rocks in the core scenic area of Fozi Mountain were formed during the Late Cretaceous period. Elemental analysis showed that these volcanic rocks were dominated by the shoshonite series. They include gray dacite porphyry, grayish-white breccia tuff, volcanic agglomerate, and gray tuffaceous sandstone. These rocks were characterized by high silicon, high alkali content, and rich potassium levels. Lu-Hf isotope analysis of zircons revealed that their epsilon Hf(t) values varied from -8.7 to -6.8. The corresponding TDM2 values were primarily distributed in the range of 1.71 Ga to 1.59 Ga. These findings indicated that the magma primarily originated from the partial melting of the Mesoproterozoic crystalline basement, accompanied by a small number of mantle-derived materials. Tectonic environment analysis indicated that these rocks were formed in the post-orogenic intraplate extensional environment, which was associated with the back-arc extension or lithospheric thinning caused by the subduction of the paleo-Pacific plate beneath the Eurasian plate. The formation of these volcanic rocks was attributed to post-orogenic magmatism.
Keyword ：
Fozi Mountain Fozi Mountain geochemistry geochemistry volcanic rock volcanic rock zircon Hf isotope zircon Hf isotope zircon U-Pb zircon U-Pb
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| GB/T 7714 | Chen, Nan , Li, Dunpeng , Huang, Yanna et al. Zircon U-Pb Dating, Geochemistry, Lu-Hf Isotope Characteristics, and Geological Significance of Volcanic Rocks in Zhenghe Fozi Mountain National Geopark, Fujian, China [J]. | MINERALS , 2024 , 14 (6) . |
| MLA | Chen, Nan et al. "Zircon U-Pb Dating, Geochemistry, Lu-Hf Isotope Characteristics, and Geological Significance of Volcanic Rocks in Zhenghe Fozi Mountain National Geopark, Fujian, China" . | MINERALS 14 . 6 (2024) . |
| APA | Chen, Nan , Li, Dunpeng , Huang, Yanna , Fu, Yihang , Yang, Xiaomin , Wang, Hanbin . Zircon U-Pb Dating, Geochemistry, Lu-Hf Isotope Characteristics, and Geological Significance of Volcanic Rocks in Zhenghe Fozi Mountain National Geopark, Fujian, China . | MINERALS , 2024 , 14 (6) . |
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福建将乐新路口钨矿是闽西北地区石英脉型钨矿的代表性矿床之一，然而对其成矿时代尚未开展过研究。为了了解新路口石英脉型钨矿床的成矿时代和矿石成份，对黑钨矿进行了电子探针成份分析和LA-ICPMS U-Pb测年，结果显示：黑钨矿WO3为74.147%~75.491%，MnO的含量为9.601%~16.311%，FeO的含量为8.921%~14.903%；FeO/MnO平均值为0.784，总体富锰，属于钨锰铁矿；黑钨矿LA-ICP-MS U-Pb的T-W下交点年龄为147.0 ± 2.6 Ma (MSWD = 0.51)，校正后的206Pb/238U加权平均年龄为145.2 ± 2.6 Ma (n = 21, MSWD = 1.6)，成矿年龄为晚侏罗世。The Xinlukou tungsten deposit in Jiangle, Fujian Province is one of the representative deposits of quartz vein type tungsten deposits in northwestern Fujian, however, its metallogenic age has not been studied. In order to understand the metallogenic age and ore composition of the Xinlukou quartz vein type tungsten deposit, the electron microprobe composition analysis and LA-ICPMS U-Pb dating of wolframite were carried out. The results show that the content of WO3 is 74.147%~75.491%, the content of MnO is 9.601%~16.311%, and the content of FeO is 8.921%~14.903%. The average value of FeO/MnO is 0.784, which is rich in manganese and belongs to tungsten manganese iron ore. The LA-ICP-MS U-Pb T-W lower intercept age of the wolframite is 147.0 ± 2.6 Ma (MSWD = 0.51), the corrected 206Pb/238U weighted average age is 145.2 ± 2.6 Ma (n = 21, MSWD = 1.6), and the metallogenic age is Late Jurassic.
Keyword ：
Electron Microprobe Electron Microprobe Quartz Vein Type Tungsten Deposit Quartz Vein Type Tungsten Deposit U-Pb Dating U-Pb Dating U-Pb测年 U-Pb测年 Wolframite Wolframite Xinlukou Tungsten Deposit Xinlukou Tungsten Deposit 新路口钨矿床 新路口钨矿床 电子探针 电子探针 石英脉型钨矿 石英脉型钨矿 黑钨矿 黑钨矿
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| GB/T 7714 | 王汉滨 , 黎敦朋 , 程浩楠 . 福建将乐县新路口石英脉型钨矿床黑钨矿电子探针分析和LA-ICPMS U-Pb测年 [J]. | 地球科学前沿 , 2024 , 14 (9) : 1183-1191 . |
| MLA | 王汉滨 et al. "福建将乐县新路口石英脉型钨矿床黑钨矿电子探针分析和LA-ICPMS U-Pb测年" . | 地球科学前沿 14 . 9 (2024) : 1183-1191 . |
| APA | 王汉滨 , 黎敦朋 , 程浩楠 . 福建将乐县新路口石英脉型钨矿床黑钨矿电子探针分析和LA-ICPMS U-Pb测年 . | 地球科学前沿 , 2024 , 14 (9) , 1183-1191 . |
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紫金山金铜矿床是世界级的超大型矿床，具有上金下铜的分带特征，上部金矿已开采完毕，中下部铜矿体尚未圈闭，开展流体包裹体均一温度测量对确定成矿的热源中心和找矿方向研究具有重要的指导意义。本文在野外地质调查、流体包裹体样品采集、岩相学观察的基础上，对露天采矿场海拔560~580 m平台与铜矿体共生的蚀变石英、明矾石开展了流体包裹体均一温度和冰点温度的测量，结果表明：流体包裹体主要有液相包裹体、气相包裹体、CO2包裹体以及少量含子矿物多相包裹体4种类型；流体包裹体均一温度范围为120.9℃~430.1℃，主要集中于160℃~220℃和360℃~380℃，显示具有2个成矿温度峰值，可能暗示具有2次成矿作用；冰点温度−0.1℃~−13.0℃，对应盐度为0.18% NaCl eqv~16.89% NaCl eqv。根据流体包裹体均一温度中较高温度峰值绘制的流体包裹体均一温度等值线图显示成矿热源来自矿区的东南侧深部，并向南东方向倾伏，指示矿区东南侧深部仍具有较大的找矿前景。
Keyword ：
Fluid Inclusions Fluid Inclusions Ore-Forming Heat Source Ore-Forming Heat Source the Contour Map of the Homogenization Temperature the Contour Map of the Homogenization Temperature Zijinshan Copper-Gold Deposit Zijinshan Copper-Gold Deposit 均一温度等值线 均一温度等值线 成矿热源 成矿热源 流体包裹体 流体包裹体 紫金山金铜矿床 紫金山金铜矿床
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| GB/T 7714 | 杨小敏 , 付一航 , 黎敦朋 . 福建紫金山金铜矿床下部铜矿体流体包裹体均一温度测量及地质意义 [J]. | 地球科学前沿 , 2024 , 14 (4) : 358-366 . |
| MLA | 杨小敏 et al. "福建紫金山金铜矿床下部铜矿体流体包裹体均一温度测量及地质意义" . | 地球科学前沿 14 . 4 (2024) : 358-366 . |
| APA | 杨小敏 , 付一航 , 黎敦朋 . 福建紫金山金铜矿床下部铜矿体流体包裹体均一温度测量及地质意义 . | 地球科学前沿 , 2024 , 14 (4) , 358-366 . |
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In addition to overall uplift of the Qiabuqia region during the Late Cenozoic, three deformation stages can be identified in the northeastern Qinghai-Tibet Plateau. Specifically, these deformation stages were recognized in areas east of the Gonghe Basin that surrounds Waliguan Mountain and include: 1) Late Miocene to Late Pliocene deformation-dominated by thrust napping with dextral strike-slipping; 2) Early Pleistocene to late middle period of Pleistocene deformation-fault structures were dominated by the dextral strike-slipping with thrust napping; and 3) end of Late Pleistocene to Middle Holocene deformation-thrust napping slowed down and finally braked, while the shallow surface began to loosen and extend at Qiabuqia region's rear-edge. DR4 borehole drilling data indicate that the Xiangshuihe Formation's buried depth is similar to 1,000 m. The Xianshuihe Formation's top section is characterized by normal fault-type (NF) tectonic stress, while the maximum principal tectonic stress (sigma 1) is perpendicular and the minimum principal tectonic stress (sigma 3) is horizontal. In contrast, the deep basement is characterized by thrust fault (TF) and strike-slip (SS) tectonic stress, while the sigma 1 is in the NE-SW direction, ranging from 20.1 degrees to 75.3 degrees with an average of 40.0 degrees. Based on the aforementioned observations, it can be inferred that there are three sets of hidden faults in the basement of the Qiabuqia region: 1) the NW-NNW trending compressional-torsional faults; 2) the NE trending tensional-torsional faults; and 3) the NWW trending compressional-torsional faults. The findings in this study can potentially offer a robust geological basis for exploring and utilizing hot, dry rock resources within the Gonghe Basin.
Keyword ：
Gonghe Basin Gonghe Basin hot dry rock hot dry rock Late Cenozoic Late Cenozoic normal fault normal fault strike-slip fault strike-slip fault tectonic stress field tectonic stress field thrust nappe thrust nappe
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| GB/T 7714 | Zhang, Yang , Feng, Qingda , Li, Fucheng et al. Insights into the late Cenozoic structural deformation and tectonic stress field of the Qiabuqia region, Gonghe Basin, northeastern Qinghai-Tibetan Plateau [J]. | FRONTIERS IN EARTH SCIENCE , 2023 , 10 . |
| MLA | Zhang, Yang et al. "Insights into the late Cenozoic structural deformation and tectonic stress field of the Qiabuqia region, Gonghe Basin, northeastern Qinghai-Tibetan Plateau" . | FRONTIERS IN EARTH SCIENCE 10 (2023) . |
| APA | Zhang, Yang , Feng, Qingda , Li, Fucheng , Zhang, Linyou , Zhang, Chao , Zhang, Senqi et al. Insights into the late Cenozoic structural deformation and tectonic stress field of the Qiabuqia region, Gonghe Basin, northeastern Qinghai-Tibetan Plateau . | FRONTIERS IN EARTH SCIENCE , 2023 , 10 . |
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Late Mesozoic mafic dykes, which are widely developed in the North Qinling Orogenic Belt (NQOB), include abundant geodynamic information. This paper describes the mafic dykes that intrude the Late Jurassic granite in the Dayu and Kuyu areas, and reports important petrological constraints for the late Mesozoic tectonic transition from compression to extension in the NQOB. Three zircon U-Pb results show that the minimum ages of the mafic dykes are 139.8 +/- 1.4 Ma, 137.4 +/- 1.7 Ma and 133.4 +/- 0.9 Ma, indicating that the emplacement age of the Dayu and Kuyu mafic dykes is 140-133 Ma. Petrogeochemical analyses suggest that the mafic dykes belong to the high-K calc-alkaline shoshonite series with low SiO2 (46.93-56.73 wt%), MgO (1.88-9.10 wt%) and TiO2 (1.17-1.82 wt%), and high Al2O3 (13.98-17.46 wt%), TFe2O3 (7.81-10.92 wt%) and K2O (1.28-4.78 wt%). The mafic dykes are enriched in large ion lithophile elements (e.g. Rb, Ba, K, La, Sr) and depleted in high-field-strength elements (e.g. Nb, Ta, Zr, Ti). These samples have the right-sloping chondrite-normalised rare earth element patterns, which suggest light rare earth element enrichment and heavy rare earth elements depletion with no obvious Eu anomalies (delta Eu = 0.94-1.11). The I-Sr, epsilon(Nd)(t), epsilon(Hf) (t) and T-DM2(crust) values are 0.7056-0.7060, -10.60 to -5.98, -14.1 to -2.8, and 1382.4 +/- 25.1 to 2081.9 +/- 47.6 Ma, respectively. Both elemental and isotopic geochemistry show that the formation of Dayu and Kuyu mafic dykes is due to the partial decompression melting of previously enriched lithospheric mantle during a delamination process. The mafic dykes have undergone fractionation crystallisation of Mg-Fe phase minerals during magma ascent, accompanied by some crustal contamination. Combined with the regional tectonic setting, we suggested that the NQOB experienced intra-continental extension during the Early Cretaceous.
Keyword ：
delamination delamination Early Cretaceous Early Cretaceous mafic dykes mafic dykes North Qinling Orogenic Belt North Qinling Orogenic Belt Paleo-Pacific Plate subduction Paleo-Pacific Plate subduction partial melting partial melting
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| GB/T 7714 | Huang, Y. N. , Li, D. P. , Xiao, A. F. et al. Petrogenesis and tectonic setting of Early Cretaceous mafic dykes in the North Qinling Orogenic Belt, central China: constraints on the lithospheric lower crust delamination [J]. | AUSTRALIAN JOURNAL OF EARTH SCIENCES , 2023 , 70 (4) : 567-584 . |
| MLA | Huang, Y. N. et al. "Petrogenesis and tectonic setting of Early Cretaceous mafic dykes in the North Qinling Orogenic Belt, central China: constraints on the lithospheric lower crust delamination" . | AUSTRALIAN JOURNAL OF EARTH SCIENCES 70 . 4 (2023) : 567-584 . |
| APA | Huang, Y. N. , Li, D. P. , Xiao, A. F. , Xu, S. M. . Petrogenesis and tectonic setting of Early Cretaceous mafic dykes in the North Qinling Orogenic Belt, central China: constraints on the lithospheric lower crust delamination . | AUSTRALIAN JOURNAL OF EARTH SCIENCES , 2023 , 70 (4) , 567-584 . |
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The North Qinling Orogenic Belt (NQOB) is a composite orogenic belt in central China. It started evolving during the Meso-Neoproterozoic period and underwent multiple stages of plate subduction and collision before entering intra-continental orogeny in the Late Triassic. The Meso-Cenozoic intra-continental orogeny and tectonic evolution had different responses in various terranes of the belt, with the tectonic evolution of the middle part of the belt being particularly controversial. The granites distributed in the Dayu and Kuyu areas in the middle part of the NQOB can provide an important window for revealing the geodynamic mechanisms of the NQOB. The main lithology of Dayu and Kuyu granites is biotite monzogranite, and the zircon U-Pb dating yielded intrusive ages of 151.3 & PLUSMN; 3.4 Ma and 147.7 & PLUSMN; 1.5 Ma, respectively. The dates suggest that the biotite monzogranite were formed at the end of the Late Jurassic. The whole-rock geochemistry analysis shows that the granites in the study areas are characterized by slightly high SiO2 (64.50-68.88 wt%) and high Al2O3 (15.12-16.24 wt%) and Na2O (3.55-3.80 wt%) contents. They are also enriched in light rare earth elements, large ion lithophile elements (e.g., Ba, K, La, Pb and Sr), and depleted in high field strength elements (HFSEs) (e.g., Ta, Nb, P and Ti). Additionally, the granites have weakly negative-slightly positive Eu anomalies (& delta;Eu = 0.91-1.19). Zircon Lu-Hf isotopic analysis showed & epsilon;Hf(t) = -6.1--3.8, and the two-stage model age is T2DM(crust) = 1.5-1.6 Ga. The granites in the study areas are analyzed as weak peraluminous high-K calc-alkaline I-type granites. They formed by partial melting of the thickened ancient lower crust, accompanied by the addition of minor mantle-derived materials. During magma ascent, they experienced fractional crystallization, with residual garnet and amphibole for a certain proportion in the magma source region. Comprehensive the geotectonic data suggest that the end of the Late Jurassic granite magmatism in the Dayu and Kuyu areas represents a compression-extension transition regime. It may have been a response to multiple tectonic mechanisms, such as the late Mesozoic intra-continental southward subduction of the North China Craton and the remote effect of the Paleo-Pacific Plate subduction. image
Keyword ：
I-type granite I-type granite Late Jurassic Late Jurassic North Qinling Orogenic Belt North Qinling Orogenic Belt partial melting partial melting tectonic transition tectonic transition
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| GB/T 7714 | Huang, Yanna , Li, Dunpeng , Xiao, Aifang et al. Geochronology, Petrogenesis and Tectonic Setting of the Late Jurassic I-type Granites in the North Qinling Orogenic Belt, Central China [J]. | ACTA GEOLOGICA SINICA-ENGLISH EDITION , 2023 , 97 (4) : 1132-1149 . |
| MLA | Huang, Yanna et al. "Geochronology, Petrogenesis and Tectonic Setting of the Late Jurassic I-type Granites in the North Qinling Orogenic Belt, Central China" . | ACTA GEOLOGICA SINICA-ENGLISH EDITION 97 . 4 (2023) : 1132-1149 . |
| APA | Huang, Yanna , Li, Dunpeng , Xiao, Aifang , Xu, Songming . Geochronology, Petrogenesis and Tectonic Setting of the Late Jurassic I-type Granites in the North Qinling Orogenic Belt, Central China . | ACTA GEOLOGICA SINICA-ENGLISH EDITION , 2023 , 97 (4) , 1132-1149 . |
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The volcanic magmatic activity has not been observed in the Gonghe basin and its surrounding orogenic belts since the Cenozoic. Heat generation from the magma of concealed granite body during the Indosinian period and the radioactive elements within the stratum are difficult to form the heat source of hot dry rock resources in the Gonghe basin. However, it has been widely recognized that this basin is a high-temperature geothermal abnormal basin. Nowadays, two hot dry rock masses were verified in the Qiabuqia of the Gonghe County and the Reshuiquan of the Guide County basically. Sixteen target areas of the hot dry rock exploration were also delineated in this region. Evidences from the regional gravity and aeromagnetic survey, regional natural seismic imaging profile, tomographic exploration of natural seismic background noise at basin scale, ultra-high resolution gravity anomalies, as well as linear inversion of resistivity and phase velocity of Rayleigh wave group all show that partial melting layer was developed in the crust of the Gonghe basin. This partial melting layer, located in the inner plate environment and characterized by high heat flow, constitutes the regional heat source of the hot dry rock resources in the Gonghe basin. The MT exploration reflects that the partial melting layer within the crust of the western basin of the Gonghe basin is characterized by a depth of 15-35 km, length of about 41 km and 34 km in east-west and north-south directions respectively, thickness of 2-12 km. Comprehensive analysis shows that this partial melting layer, marked by a melting degree of 4%-7% and temperature of about 574 at 15 km depth, is mainly located under the main detachment nappe interface between the nappe systems of the Guinan Nanshan and Gonghe, and above the main detachment nappe interface of Xinghai large composite nappe system. Heat generation from the continuous dynamic shear friction at the deep structural, multi-level, and near horizontal detachment nappe interface during the Neoid period is the main factor for the formation of the partial melting layer. © 2021, Editorial Department of Earth Science. All right reserved.
Keyword ：
Heat generation Heat generation Melting Melting Radioactive elements Radioactive elements Rocks Rocks Seismology Seismology
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| GB/T 7714 | Zhang, Senqi , Li, Xufeng , Song, Jian et al. Analysis on Geophysical Evidence for Existence of Partial Melting Layer in Crust and Regional Heat Source Mechanism for Hot Dry Rock Resources of Gonghe Basin [J]. | Earth Science - Journal of China University of Geosciences , 2021 , 46 (4) : 1416-1436 . |
| MLA | Zhang, Senqi et al. "Analysis on Geophysical Evidence for Existence of Partial Melting Layer in Crust and Regional Heat Source Mechanism for Hot Dry Rock Resources of Gonghe Basin" . | Earth Science - Journal of China University of Geosciences 46 . 4 (2021) : 1416-1436 . |
| APA | Zhang, Senqi , Li, Xufeng , Song, Jian , Wen, Dongguang , Li, Zhiwei , Li, Dunpeng et al. Analysis on Geophysical Evidence for Existence of Partial Melting Layer in Crust and Regional Heat Source Mechanism for Hot Dry Rock Resources of Gonghe Basin . | Earth Science - Journal of China University of Geosciences , 2021 , 46 (4) , 1416-1436 . |
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永安盆地位于华夏块体武夷山隆起南缘,是一中生代火山断陷盆地,堆积一套巨厚的火山-沉积岩系。文章对该岩系底部的南园组进行了详细岩相学、年代学研究。结果显示,永安盆地南园组火山岩具有多旋回的特征。南园组火山岩岩性主要为角砾凝灰岩、熔结凝灰岩、凝灰岩、熔岩,主要由晶屑、岩屑与火山尘胶结物组成。晶屑主要为石英、黑云母、斜长石。锆石U-Pb测年显示永安盆地约在155.30±0.74 Ma时开始发生裂陷、火山喷发、充填火山碎屑沉积。在143.01±0.66 Ma时火山作用趋于平静,南园组火山碎屑沉积结束。
Keyword ：
南园组 南园组 岩石学特征 岩石学特征 永安盆地 永安盆地 锆石测年 锆石测年
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| GB/T 7714 | 阳玲利 , 赖健清 , 黎敦朋 et al. 永安盆地南园组地质特征及年代学研究 [J]. | 南方金属 , 2021 , (05) : 22-26 . |
| MLA | 阳玲利 et al. "永安盆地南园组地质特征及年代学研究" . | 南方金属 05 (2021) : 22-26 . |
| APA | 阳玲利 , 赖健清 , 黎敦朋 , 柳云童 . 永安盆地南园组地质特征及年代学研究 . | 南方金属 , 2021 , (05) , 22-26 . |
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Abstract ：
贵德县热水泉干热岩体平面上呈半椭圆形展布于NNW向区域性新街断裂带组分的热光断裂之西,面积约122 km2.ZR1孔钻探结果表明:干热岩体上部为具自封闭盖层性质的中温水热型地热田,2800～3050 m属相对完整或隔水的次高温花岗岩体,3050.68 m深处温度为151.34℃,进入干热岩段.干热岩体热储为侵位于233.2～222.3 M a的中晚三叠世花岗岩,岩石类型主要有闪长岩、花岗闪长岩、二长花岗岩和钾长花岗岩等.具正花状构造结构的新街—瓦里关走滑挤隆构造带为区域性控热导热构造,并对干热岩体的就位有明显的控制作用.基于大地电磁测深、高分辨率重力异常、电阻率与Rayleigh波群相速度线性反演,以及地质综合分析认为,以壳内部分熔融层供热为主,地幔热流供热、沿走滑断裂带上升的晚期小熔体与双倍地壳U、Th、K等放射性元素衰变生热为叠加热源,一并构成的复合型热源,是热水泉干热岩体最有可能的热源机制.
Keyword ：
地热地质 地热地质 干热岩 干热岩 热源机制 热源机制 花状构造 花状构造 贵德县热水泉 贵德县热水泉
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| GB/T 7714 | 张森琦 , 吴海东 , 张杨 et al. 青海省贵德县热水泉干热岩体地质—地热地质特征 [J]. | 地质学报 , 2020 , 94 (5) : 1591-1605 . |
| MLA | 张森琦 et al. "青海省贵德县热水泉干热岩体地质—地热地质特征" . | 地质学报 94 . 5 (2020) : 1591-1605 . |
| APA | 张森琦 , 吴海东 , 张杨 , 宋健 , 张林友 , 许伟林 et al. 青海省贵德县热水泉干热岩体地质—地热地质特征 . | 地质学报 , 2020 , 94 (5) , 1591-1605 . |
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