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江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制 CSCD PKU
期刊论文 | 2024 , 43 (01) , 86-100 | 地质通报
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江西省宜丰县甘坊地区是一个重要的稀有金属成矿区,目前在甘坊岩体内发现了一系列锂铷稀有多金属矿床(点),但其成矿机制尚不明确。选择甘坊岩体内洞上花岗岩作为研究对象,采用电子探针技术对多种花岗岩中的长石和云母类矿物进行了精细的结构和成分分析。结果表明,云母类矿物是铷的主要载体(Rb_2O <1.07%),长石类矿物中Rb含量低(Rb_2O <0.11%),尤其是在钠长石中Rb的含量几乎为0。含铷云母主要是白云母花岗岩、伟晶岩和细晶岩中的多硅白云母-铁锂云母类,其中铷可能主要通过与钠双置换云母结构中的层间钾离子存在。矿物结构特征显示,洞上花岗岩经历了明显的岩浆结晶分异和流体交代作用。结晶分异作用可能是洞上花岗岩Rb富集成矿的关键机制,而后期流体交代蚀变过程对铷的聚集作用有限。结合前人研究成果,笔者认为甘坊地区具有较好的锂、铷等稀有金属成矿潜力,后续的找矿勘查应注重与早白垩世—晚侏罗世(140~150Ma)高分异花岗岩相关的锂、铷等稀有金属矿床的找矿工作。

Keyword :

江西 江西 洞上花岗岩 洞上花岗岩 甘坊岩体 甘坊岩体 矿产勘查工程 矿产勘查工程 稀有金属 稀有金属 花岗岩 花岗岩

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GB/T 7714 姜军胜 , 郭欣然 , 徐净 et al. 江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制 [J]. | 地质通报 , 2024 , 43 (01) : 86-100 .
MLA 姜军胜 et al. "江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制" . | 地质通报 43 . 01 (2024) : 86-100 .
APA 姜军胜 , 郭欣然 , 徐净 , 田立明 , 熊光强 , 王力圆 et al. 江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制 . | 地质通报 , 2024 , 43 (01) , 86-100 .
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Chronological and Mineralogical Records of the Langqi Pluton, Fuzhou: Constraints on the Magma Mixing Process SCIE
期刊论文 | 2023 , 13 (12) | MINERALS
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The mafic microgranular enclaves (MMEs) from Mesozoic intermediate-acid magmatic rocks, widely developed along the Fujian coast, are considered to be the results of large-scale crust- mantle interaction by magma mixing. This paper is based on zircon U-Pb chronology, along with zircon Hf isotope and mineral analyses for the host granite and MMEs from Langqi Island, in order to investigate the magma mixing mechanism of the Langqi pluton in Fuzhou, Southeast China. The results indicate that the MMEs were emplaced during the late Early Cretaceous (98.9 +/- 2.2 Ma), identical to the age of the granite (100.1 +/- 1.1 Ma) within the error range. The zircon epsilon Hf(t) values for the granite and MMEs are in the ranges of -2.1 similar to 0.0 and-1.7 similar to+1.1. The zircon Hf isotope data indicate that both the granite and MMEs were predominantly derived from the ancient crustal basement of Cathaysia, with a partial mantle-derived contribution. The An values of plagioclase phenocrysts with oscillatory zoning patterns in the MMEs show oscillatory changes from the core to the rim, indicating multiple mixing events between the two magmas with different compositions. Amphiboles in the MMEs show characteristics of crust-mantle contamination, and the Ti migrated from the mafic magma with high concentration to the felsic magma with low concentration during the magma mixing process. Biotites in the host rock and MMEs belong to primary biotite, and they have relatively high MgO contents (ave. 12.78 wt.%) and relatively low FeOT/(MgO + FeOT) ratios (ave. 0.56), showing characteristics of crust-mantle contamination. The crust-mantle magma interaction in a crystal, mushy state played a significant role in controlling the formation and evolution of the Langqi pluton. The magmatism was predominantly sourced from mixing between the mantle-derived mafic magma and the crust-derived felsic magma during the subduction of the Paleo-Pacific Plate, resulting in the formation of the Langqi doleritic veins, granites, and MMEs.

Keyword :

chronology chronology Langqi Island Langqi Island mafic microgranular enclaves mafic microgranular enclaves magma mixing magma mixing mineralogy mineralogy

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GB/T 7714 Chen, Zhouxin , Wang, Liyuan , Yan, Xue . Chronological and Mineralogical Records of the Langqi Pluton, Fuzhou: Constraints on the Magma Mixing Process [J]. | MINERALS , 2023 , 13 (12) .
MLA Chen, Zhouxin et al. "Chronological and Mineralogical Records of the Langqi Pluton, Fuzhou: Constraints on the Magma Mixing Process" . | MINERALS 13 . 12 (2023) .
APA Chen, Zhouxin , Wang, Liyuan , Yan, Xue . Chronological and Mineralogical Records of the Langqi Pluton, Fuzhou: Constraints on the Magma Mixing Process . | MINERALS , 2023 , 13 (12) .
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Chronological and Mineralogical Records of the Langqi Pluton, Fuzhou: Constraints on the Magma Mixing Process Scopus
期刊论文 | 2023 , 13 (12) | Minerals
Tin-bearing magnetite with nanoscale Mg-Si defects: Evidence for the early stages of mineralization in a skarn system SCIE
期刊论文 | 2023 , 10 | FRONTIERS IN EARTH SCIENCE
WoS CC Cited Count: 2
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Tin-bearing magnetite is reported from several types of magmatic-hydrothermal ore deposits. The question of whether tin is incorporated within solid solution, as Sn4+, or as nanoinclusions remains open, however. We report a micron- to nanoscale investigation of Sn (Mg, Si)-bearing magnetite from serpentinite in the Dulong Zn-Sn-In skarn, South China, with the dual aims of understanding the mechanisms involved in accommodating Sn and associated elements into the Fe-oxide, and the inferences that this carries for constraining the early stages of skarn formation. Magnetite preserves a range of textures that record the evolution of metasomatism during prograde growth of grain cores and retrograde rim replacement. Observations reveal the presence of chondrodite and sellaite (MgF2) as nanoscale inclusions preserved in magnetite. This implies initiation of the Dulong mineralizing system during a humite-bearing, magnesium skarn stage. Magnesium-Si defects, forming along (110) planes prior to Sn-enrichment, are recognized for the first time. Release of high volatile, F-rich fluids is interpreted to lead to precipitation of cassiterite inclusions along < 111*> directions in magnetite.

Keyword :

cassiterite cassiterite crystal structure crystal structure Dulong Dulong HAADF STEM HAADF STEM humite group humite group magnetite magnetite skarn skarn

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GB/T 7714 Xu, Jing , Ciobanu, Cristiana L. , Cook, Nigel J. et al. Tin-bearing magnetite with nanoscale Mg-Si defects: Evidence for the early stages of mineralization in a skarn system [J]. | FRONTIERS IN EARTH SCIENCE , 2023 , 10 .
MLA Xu, Jing et al. "Tin-bearing magnetite with nanoscale Mg-Si defects: Evidence for the early stages of mineralization in a skarn system" . | FRONTIERS IN EARTH SCIENCE 10 (2023) .
APA Xu, Jing , Ciobanu, Cristiana L. , Cook, Nigel J. , Slattery, Ashley D. , Ehrig, Kathy , Wade, Benjamin P. et al. Tin-bearing magnetite with nanoscale Mg-Si defects: Evidence for the early stages of mineralization in a skarn system . | FRONTIERS IN EARTH SCIENCE , 2023 , 10 .
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Tin-bearing magnetite with nanoscale Mg-Si defects: Evidence for the early stages of mineralization in a skarn system Scopus
期刊论文 | 2023 , 10 | Frontiers in Earth Science
Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic "ice-free oases" SCIE
期刊论文 | 2023 , 401 | PRECAMBRIAN RESEARCH
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The Ediacaran glaciation has garnered considerable attention for its potential biological impact because it witnesses the birth of complex animals. Many researchers question whether large-scale regional or even global glaciations, represent critical barriers to the evolution of macroscopic animals. So how did complex animals survive during a major glaciation? One possible explanation is the existence of isolated shallower refugia or icefree oases. However, the sedimentary evolution of such ice-free oases and how they could support the survival of complex life forms are not yet fully understood. This study focuses on the inter-diamictite black sediments in the Ediacaran Talisayi Formation of NW China (Yili block), which may represent a habitable ice-free oasis during the Gaskiers glaciation. The sedimentary facies and geochemical analyses indicate that these deposits were formed in oxygenated and photic shallow glacier lake environments with highly developed microbial mat substrates, it was formed during a short-lived partial deglaciation with enhanced weathering. And diverse organic-wall microfossils were found within the inter-diamictite black sediments. Furthermore, based on the growth habits of modern microbial algal mats, a paleontological clock can be established to estimate the duration of partial deglaciation, which may have lasted only for thousands of years. The ice-free oasis formed during this period could potentially harbor complex ecosystems, providing valuable ecological and temporal windows for the evolution of complex animals.

Keyword :

Ediacaran Ediacaran Gaskiers glaciation Gaskiers glaciation Ice free oasis Ice free oasis Microbial mat Microbial mat Partial deglaciation Partial deglaciation

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GB/T 7714 Zhang, Xinsong , An, Yanqing , Chen, Yarui et al. Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic "ice-free oases" [J]. | PRECAMBRIAN RESEARCH , 2023 , 401 .
MLA Zhang, Xinsong et al. "Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic "ice-free oases"" . | PRECAMBRIAN RESEARCH 401 (2023) .
APA Zhang, Xinsong , An, Yanqing , Chen, Yarui , Du, Weidong , Wang, Liyuan . Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic "ice-free oases" . | PRECAMBRIAN RESEARCH , 2023 , 401 .
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Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic “ice-free oases” Scopus
期刊论文 | 2024 , 401 | Precambrian Research
Rb mineralization during magmatic differentiation: Insight from mineralogical study on the Ganfang rare metal granite, Jiangxi Province; [稀有金属花岗岩结晶分异过程中铷的富集与成矿来自江西甘坊岩体的矿物学证据] Scopus CSCD PKU
期刊论文 | 2023 , 97 (11) , 3766-3785 | Acta Geologica Sinica
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The Rb mineralization is associated -with rare metal granites. However, -widespread hydrothermal alteration in the late evolution of rare metal granites makes it difficult to distinguish the magmatic process from the hydrothermal process. It is still unclear whether the rare metal mineralization is dominated by magmatic differentiation or hydrothermal metasomatism. The Ganfang intrusion in the Jiangxi Province is an important rare metal metallogenic area, where a series of Li-Rb rare metal deposits (mineralization) have been discovered, and the mineralization mechanism of rare metals is not yet clear. This paper takes both granite-type Rb (Baiguo, Dagang, and Nanmukeng) and aplite-type Rb (Fuhua, Tongan) mineralization from the Ganfang intrusion for case studies. The detailed mineralogy texture and composition of feldspars and micas have been analyzed by automatic mineral scanning system, electron probe and LA-ICP-MS. The results show that micas are the main carriers of Rb (1683X10 -12047X10 ), and the contents of Rb in feldspars are lower. The Rb content of K-feldspar is 1683X10 -4051X10 , whereas albite contains almost no Rb concentration (1. 82 X 10 -89.94X10 ). The Rb-bearing micas transfer from muscovite, though Li-phengite and zinnwaldite, to lepidolite, in which substituted mechanisms for Li are 2Li + ,vSi4+- v,Al3++v,Al3++n andLi++Fe2+- V,A13++H, and for Rb is Rb+/ Na+ /Cs+ ~ K+. The mineral textures and compositions record both magma crystallization differentiation and fluid metasomatism for Ganfang granites; however, the former -was the key enrichment mechanism for Rb as •well as Li. © 2023 Geological Society of China. All rights reserved.

Keyword :

enrichment mechanism enrichment mechanism Ganfang granite Ganfang granite granite granite Jiangxi Province Jiangxi Province rare metals rare metals Rb Rb

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GB/T 7714 Xu, J. , Hou, W. , Wang, L. et al. Rb mineralization during magmatic differentiation: Insight from mineralogical study on the Ganfang rare metal granite, Jiangxi Province; [稀有金属花岗岩结晶分异过程中铷的富集与成矿来自江西甘坊岩体的矿物学证据] [J]. | Acta Geologica Sinica , 2023 , 97 (11) : 3766-3785 .
MLA Xu, J. et al. "Rb mineralization during magmatic differentiation: Insight from mineralogical study on the Ganfang rare metal granite, Jiangxi Province; [稀有金属花岗岩结晶分异过程中铷的富集与成矿来自江西甘坊岩体的矿物学证据]" . | Acta Geologica Sinica 97 . 11 (2023) : 3766-3785 .
APA Xu, J. , Hou, W. , Wang, L. , Zhao, T. , Chen, S. , Tian, L. . Rb mineralization during magmatic differentiation: Insight from mineralogical study on the Ganfang rare metal granite, Jiangxi Province; [稀有金属花岗岩结晶分异过程中铷的富集与成矿来自江西甘坊岩体的矿物学证据] . | Acta Geologica Sinica , 2023 , 97 (11) , 3766-3785 .
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Rb mineralization during magmatic differentiation: Insight from mineralogical study on the Ganfang rare metal granite, Jiangxi Province EI CSCD PKU
期刊论文 | 2023 , 97 (11) , 3766-3785 | Acta Geologica Sinica
福建省新生代玄武岩40Ar/39Ar年代学及地质意义 PKU
期刊论文 | 2023 , 51 (1) , 118-124 | 福州大学学报(自然科学版)
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对福建省沿海至内陆出露的4件新生代玄武岩进行40 Ar/39 Ar年龄测试,对玄武岩中橄榄石斑晶进行电子探针测试;其中洋底和柳城玄武岩首次获得精确的40 Ar/39 Ar年龄数据.结果显示,闽西明溪40 Ar/39 Ar年龄数据为(1.44±0.11)Ma,柳城为(17.35±0.93)Ma;闽中洋底玄武岩年龄为(11.71±0.44)Ma;闽东厦门玄武岩年龄为(17.0±0.36)Ma.结合前人年龄数据,福建省新生代玄武岩整体表现出从闽东至闽西年龄逐渐减小的趋势.橄榄石斑晶电子探针数据显示闽东至闽西玄武岩碱性程度逐渐增加,可能指示岩浆熔融程度由沿海至内陆逐渐减少,岩石圈厚度由东向西逐渐增厚.最新获得的闽西柳城玄武岩40Ar-39Ar年龄为(17.35±0.93)Ma,与东部沿海玄武岩相似,推测可能是太平洋板块北西向俯冲时引起的岩浆扰动作用形成的.

Keyword :

40 Ar/ 39 Ar年龄 40 Ar/ 39 Ar年龄 地质意义 地质意义 新生代玄武岩 新生代玄武岩 橄榄石斑晶 橄榄石斑晶 福建省 福建省

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GB/T 7714 严率旗 , 张文慧 , 王力圆 et al. 福建省新生代玄武岩40Ar/39Ar年代学及地质意义 [J]. | 福州大学学报(自然科学版) , 2023 , 51 (1) : 118-124 .
MLA 严率旗 et al. "福建省新生代玄武岩40Ar/39Ar年代学及地质意义" . | 福州大学学报(自然科学版) 51 . 1 (2023) : 118-124 .
APA 严率旗 , 张文慧 , 王力圆 , 聂俊韬 . 福建省新生代玄武岩40Ar/39Ar年代学及地质意义 . | 福州大学学报(自然科学版) , 2023 , 51 (1) , 118-124 .
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福建省新生代玄武岩~(40)Ar/~(39)Ar年代学及地质意义 PKU
期刊论文 | 2023 , 51 (01) , 118-124 | 福州大学学报(自然科学版)
福建省新生代玄武岩~(40)Ar/~(39)Ar年代学及地质意义 PKU
期刊论文 | 2023 , 51 (01) , 118-124 | 福州大学学报(自然科学版)
稀有金属花岗岩结晶分异过程中铷的富集与成矿:来自江西甘坊岩体的矿物学证据 CSCD PKU
期刊论文 | 2023 , 97 (11) , 3766-3792 | 地质学报
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内容提要:铷的成矿与稀有金属花岗岩密切相关。由于稀有金属花岗岩中普遍存在晚阶段热液蚀变,很难厘清岩浆过程与热液过程,稀有金属成矿起主导作用的是岩浆分异作用,还是热液交代作用,目前的认识尚不清晰。江西甘坊岩体是一个重要的稀有金属成矿区,当前在甘坊岩体内发现了一系列花岗岩型和细晶岩脉型锂铷稀有多金属矿床(点),其稀有金属成矿机制仍不明确。本文选择甘坊岩体内的白果、大港、楠木坑花岗岩型铷矿和富华、同安细晶岩型铷矿为研究对象,采用矿物自动扫描系统、电子探针、LA-ICP-MS等方法对多种花岗岩中的长石类和云母类矿物进行精细结构和成分分析。结果表明:云母类矿物是铷的主要载体(Rb=1683×10~(-6)~12047×10~(-6)),长石类矿物中铷含量低,其中钾长石铷含量为1683×10~(-6)~4051×10~(-6),而钠长石几乎不含铷(1.82×10~(-6)~89.94×10~(-6))。富铷锂的云母由白云母经锂多硅白云母和铁锂云母向锂云母转变,其中锂主要通过2Li~++~(Ⅳ)Si~(4+)?~(Ⅵ)Al~(3+)+~(Ⅵ)Al~(3+)+□和Li~++Fe~(2+)?~(Ⅵ)Al~(3+)+□,铷主要以Rb~+/Na~+/Cs~+?K~+的方式进入云母。矿物结构和成分特征显示,甘坊岩体中铷、锂等稀有金属的富集与岩浆分异作用有关,结晶分异作用可能是晚阶段熔体中铷、锂等稀有金属富集的关键,而流体交代作用对稀有金属的富集作用不明显。

Keyword :

富集机制 富集机制 江西 江西 甘坊岩体 甘坊岩体 稀有金属 稀有金属 花岗岩 花岗岩

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GB/T 7714 徐净 , 侯文达 , 王力圆 et al. 稀有金属花岗岩结晶分异过程中铷的富集与成矿:来自江西甘坊岩体的矿物学证据 [J]. | 地质学报 , 2023 , 97 (11) : 3766-3792 .
MLA 徐净 et al. "稀有金属花岗岩结晶分异过程中铷的富集与成矿:来自江西甘坊岩体的矿物学证据" . | 地质学报 97 . 11 (2023) : 3766-3792 .
APA 徐净 , 侯文达 , 王力圆 , 赵太平 , 陈素余 , 田立明 . 稀有金属花岗岩结晶分异过程中铷的富集与成矿:来自江西甘坊岩体的矿物学证据 . | 地质学报 , 2023 , 97 (11) , 3766-3792 .
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稀有金属花岗岩结晶分异过程中铷的富集与成矿:来自江西甘坊岩体的矿物学证据 CSCD PKU
期刊论文 | 2023 , 97 (11) , 3766-3785,中插46-中插52 | 地质学报
福建中部丁家山铅锌矿床矿物学特征及其指示意义 CSCD PKU
期刊论文 | 2023 , 42 (04) , 845-859 | 矿物岩石地球化学通报
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Abstract :

丁家山铅锌矿床位于梅仙矿田东南部,矿区内普遍发育石榴子石、辉石、绿帘石等脉石矿物,为探讨该矿床成因,对该矿床脉石矿物进行了电子探针、激光剥蚀电感耦合等离子质谱仪(LA-ICP-MS)原位U-Pb定年和微量元素分析。结果表明,石榴子石主要为钙铁-钙铝榴石固溶体系列,含有少量的锰铝榴石和铁铝榴石;辉石为透辉石-钙铁辉石-钙锰辉石固溶体系列;绿帘石族矿物属于绿帘石范畴。石榴子石的~(206)Pb/~(238)U下交点年龄为143.7 Ma,与成矿花岗岩年龄接近。依据石榴子石原位微量元素特征差异及Eu异常将石榴子石分为钙铁榴石(I型)和钙铁-钙铝榴石(II型)两类。钙铁榴石整体呈现轻稀土富集,重稀土亏损的稀土配分模式,I-1型钙铁榴石Eu具有明显的负异常,I-2型钙铁榴石Eu具有明显的正异常;钙铁-钙铝榴石整体呈现重稀土富集,轻稀土亏损的稀土配分模式,II-1型钙铁-钙铝榴石Eu具有明显的负异常,II-2型钙铁-钙铝榴石Eu具有明显的正异常。上述特征表明,石榴子石核部环境为弱氧化-弱还原,边部为氧化环境。综合地质学、矿物学、地质年代学数据以及地球化学特征,本文认为丁家山铅锌矿床属于典型的矽卡岩型矿床。

Keyword :

LA-ICP-MS LA-ICP-MS 丁家山铅锌矿 丁家山铅锌矿 微量元素 微量元素 电子探针 电子探针 石榴子石 石榴子石 磁铁矿 磁铁矿 闪锌矿 闪锌矿

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GB/T 7714 雷科 , 王力圆 , 陈素余 . 福建中部丁家山铅锌矿床矿物学特征及其指示意义 [J]. | 矿物岩石地球化学通报 , 2023 , 42 (04) : 845-859 .
MLA 雷科 et al. "福建中部丁家山铅锌矿床矿物学特征及其指示意义" . | 矿物岩石地球化学通报 42 . 04 (2023) : 845-859 .
APA 雷科 , 王力圆 , 陈素余 . 福建中部丁家山铅锌矿床矿物学特征及其指示意义 . | 矿物岩石地球化学通报 , 2023 , 42 (04) , 845-859 .
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福建中部丁家山铅锌矿床矿物学特征及其指示意义 CSCD PKU
期刊论文 | 2023 , 42 (4) , 845-859 | 矿物岩石地球化学通报
福建中部丁家山铅锌矿床矿物学特征及其指示意义 CSCD PKU
期刊论文 | 2023 , 42 (04) , 845-859 | 矿物岩石地球化学通报
福建省新生代玄武岩成因:Sr、Nd、Pb、Hf同位素地球化学约束 CSCD PKU
期刊论文 | 2023 , 42 (03) , 588-601 | 矿物岩石地球化学通报
Abstract&Keyword Cite Version(3)

Abstract :

作为研究洋壳俯冲和壳幔相互作用理想对象的新生代玄武岩在福建省从沿海至内陆均有分布,根据地理位置这些新生代玄武岩可分成闽西、闽中与闽东沿海三个区域。本文对这些玄武岩进行了系统的全岩主、微量元素以及Sr、Nd、Pb、Hf同位素研究。结果表明,这些新生代玄武岩主要为碱性玄武岩、碧玄岩和粗面玄武岩,结合前人研究资料,可见这些玄武岩自闽东向闽西具有年龄逐渐变小、碱性逐渐增加的趋势。Sr、Nd、Pb、Hf同位素揭示这些玄武岩具有亏损地幔(DMM)与EMⅡ型富集地幔组分混合的特征。闽东沿海玄武岩相较于闽西、闽中玄武岩具有更高的Sr、Pb含量,更低的~(143)Nd/~(144)Nd值和~(176)Hf/~(177)Hf值,更趋近于EMⅡ特征。从西至东富集组分EMⅡ的逐渐增多暗示陆源沉积物与俯冲效应有关,这些陆源沉积物极可能是由俯冲洋壳带入软流圈地幔的。整个新生代玄武岩的Zr、Hf、Ti负异常与Pb同位素组成特征指示俯冲沉积物中可能含有碳酸盐组分。闽中柳城地区玄武岩的喷发年龄与闽东沿海地区玄武岩的喷发年龄较为接近;闽中柳城地区玄武岩Sr、Nd、Pb、Hf同位素特征与闽中其他玄武岩的一致,这可能与太平洋板块俯冲导致的大陆边缘上地幔发生补偿性的隆起有关;柳城地区玄武岩具有较低的SiO_2含量及最高的CaO/Al_2O_3值,可能是源区受到俯冲再循环碳酸盐组分影响的结果。

Keyword :

同位素 同位素 微量元素 微量元素 新生代玄武岩 新生代玄武岩 福建省 福建省

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GB/T 7714 严率旗 , 张文慧 , 王力圆 et al. 福建省新生代玄武岩成因:Sr、Nd、Pb、Hf同位素地球化学约束 [J]. | 矿物岩石地球化学通报 , 2023 , 42 (03) : 588-601 .
MLA 严率旗 et al. "福建省新生代玄武岩成因:Sr、Nd、Pb、Hf同位素地球化学约束" . | 矿物岩石地球化学通报 42 . 03 (2023) : 588-601 .
APA 严率旗 , 张文慧 , 王力圆 , 聂俊韬 . 福建省新生代玄武岩成因:Sr、Nd、Pb、Hf同位素地球化学约束 . | 矿物岩石地球化学通报 , 2023 , 42 (03) , 588-601 .
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福建省新生代玄武岩成因:Sr、Nd、Pb、Hf同位素地球化学约束 CSCD PKU
期刊论文 | 2023 , 42 (3) , 588-601 | 矿物岩石地球化学通报
福建省新生代玄武岩成因:Sr、Nd、Pb、Hf同位素地球化学约束 CSCD PKU
期刊论文 | 2023 , 42 (03) , 588-601 | 矿物岩石地球化学通报
福建省新生代玄武岩成因:Sr、Nd、Pb、Hf同位素地球化学约束 CSCD PKU
期刊论文 | 2023 , 42 (6) , 588-601 | 矿物岩石地球化学通报
Crust-mantle interactions in Zijinshan ore field identified by zircon SIMS U-Pb age and zircon Hf-O isotopes SCIE
期刊论文 | 2022 , 160 (2) , 292-304 | GEOLOGICAL MAGAZINE
Abstract&Keyword Cite Version(2)

Abstract :

This study presents zircon U-Pb geochronology and Hf and O isotope data for granitic rocks in the Zijinshan ore field, southwestern Fujian Province, China. The intrusive rocks comprise monzogranite, granite and granodiorite. The magmatic zircon U-Pb ages from these granitic rocks can be divided into four episodes: episodes 1 (157.9-159.9 Ma) and 2 (141 Ma) in the Late Jurassic and episodes 3 (108.1-103.2 Ma) and 4 (97.5-99.7 Ma) in the Middle and Late Cretaceous, respectively. Patterns of rare-earth elements (REE) show enrichment in light REE and obvious negative Eu anomalies. These rocks are also enriched in Rb, Th, U, La, Ce, Nd and Hf, and depleted in Ba, Nb, Sr, P and Ti. The increasing La/Yb ratio and decreasing heavy REE content with decreasing age may imply an increasing contribution of mantle-derived materials from the Late Jurassic to Cretaceous. The zircon epsilon (Hf)(t) and delta O-18 values, ranging from -37.7 to -2.8 and 12.0 parts per thousand to 6.3 parts per thousand, respectively, indicate that the lower crust is an important source of granitic rocks. There was a significant increase in epsilon (Hf)(t) values and a decrease in delta O-18 values in the younger magmatic episodes (3 and 4), which ranged from -11.4 to -0.6 and 10.7 to 6.3 parts per thousand, respectively. This suggests an increasing contribution of mantle-derived magma to the crustal melts from the Late Jurassic to late Early Cretaceous in response to the changing regional tectonic setting from compression to extension and an increasing interaction between the crust and mantle.

Keyword :

crust-mantle interactions crust-mantle interactions granite granite Hf-O isotopes Hf-O isotopes SIMS zircon U-Pb age SIMS zircon U-Pb age Zijinshan ore field Zijinshan ore field

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GB/T 7714 Zhang, Wen-Hui , Yan, Shuai-Qi , Wang, Li-Yuan . Crust-mantle interactions in Zijinshan ore field identified by zircon SIMS U-Pb age and zircon Hf-O isotopes [J]. | GEOLOGICAL MAGAZINE , 2022 , 160 (2) : 292-304 .
MLA Zhang, Wen-Hui et al. "Crust-mantle interactions in Zijinshan ore field identified by zircon SIMS U-Pb age and zircon Hf-O isotopes" . | GEOLOGICAL MAGAZINE 160 . 2 (2022) : 292-304 .
APA Zhang, Wen-Hui , Yan, Shuai-Qi , Wang, Li-Yuan . Crust-mantle interactions in Zijinshan ore field identified by zircon SIMS U-Pb age and zircon Hf-O isotopes . | GEOLOGICAL MAGAZINE , 2022 , 160 (2) , 292-304 .
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Crust-mantle interactions in Zijinshan ore field identified by zircon SIMS U-Pb age and zircon Hf-O isotopes EI
期刊论文 | 2023 , 160 (2) , 292-304 | Geological Magazine
Crust-mantle interactions in Zijinshan ore field identified by zircon SIMS U-Pb age and zircon Hf-O isotopes Scopus
期刊论文 | 2023 , 160 (2) , 292-304 | Geological Magazine
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