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Zircon U-Pb age, Trace Element, and Hf Isotopic Compositions of Nordmarkite in the Lizhuang Rare Earth Element Deposit in the Western Margin of the Yangtze Block

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Acta Geologica Sinica(English Edition) 2018年第1期92卷 225-240页

作者： zhou jiayun TAN Hongqi GONG Daxin ZHU Zhimin LUO Liping Institute of Multipurpose Utilization of Mineral Resources Chinese Academy of Geological Sciences Chengdu 610041

The Mianning-Dechang （MD） rare earth element （REE） belt, located in the northern Kangdian axis （KDA） in the western margin of the Yangtze platform, is one of the most economically significant REE mineral belts in China. REE mineralization is associated with Himalayan carbonatite- alkaline complexes. The Lizhuang nordmarkite occurred in the northern part of the MD REE belt. The majority of zircons from the Lizhuang nordmarkite are characterized by pronounced positive Ce yet slightly negative Eu anomalies and high U/Yb. Moreover, all zircons have stable Hf isotopic compositions with initial 176Hf/177Hf ratios ranging from 0.282739 to 0.282808 and an average value of 0.282773. The negative Lu/Hf and positive till（t） range from -0.98 to -0.94 （average value of -0.96） and from -0.56 to 1.89 （the majority is positive, with an average of 0.66）, respectively. These characteristics indicate that the rock is derived from an enriched mantle and subducted material. LA-ICP-MS analysis of the zircons from the intrusion yields a weighted mean 2~6pb/23SU age of 28.57~0.61Ma. During this period, the tectonic activity in the KDA is not plate subduction but an intraplate tectonic exhibiting fold-thrust and strike-slip behaviors in the western marginal zone of the Yangtze platform （WMYB）. We suggest the possibility of an existing eastward old slab subduction under WMYB combined with a regional tectonic evolution. The Lizhuang nordmarkite may be derived from an enriched mantle beneath the western part of the Yangtze craton, which originated from the remelting of the Tethys subducting slab, because of the Himalayan strike-slip that formed a special type of REE deposit called strike-slip-type REE deposits.

关键词： nordmarkite REE deposit Hf isotopic characteristics of zircon Lizhuang

Luku Alkali Syenite in the Hongge Ore District,SW China:Geochemistry,Geochronology and Metallogenic Significance

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Acta Geologica Sinica(English Edition) 2022年第3期96卷 875-890页

作者： zhou jiayun LIU Yingdong XU Li ZHU Zhimin GONG Daxing JIANG Xiaoli Technology Innovation Center of Rare Earth Resources Development and Utilization Chinese Geological SurveyChengdu 610041China Institute of Multipurpose Utilization of Mineral Resources Chinese Academy of Geological SciencesChengdu 610041China

Luku alkali syenite is distributed throughout the southern end of the Hongge basic-ultrabasic intrusion in Panzhihua,Sichuan,SW *** LA-ICP-MS,the alkali syenite intrusion yielded a zircon U-Pb age of_(2)64.5±1.6 Ma,concordant with the ages of the E’meishan large igneous province(260 Ma).The intrusion displayed silica-saturated,Al-adequate and alkali-rich signatures,with SiO_(2)62.07%-64.04%,Al_(2)O_(3)16.26%-16.79%and Na_(2)O+K_(2)O 9.17%-9.91%(averaging 9.31%).The rock falls into the alkaline zone on the SiO_(2)-***,as well as in the potassium zone on the K_(2)O-Na_(2)O diagram,indicating a potassium alkaline *** rock has a low total REE concentration and showed enrichment in LREE(LREE/HREE=7.06-7.95),typical negative Eu anomalies(δEu=0.73-0.80),trace element deficiencies in LILEs(Ba,K,Sr,Zr)and enrichment in HFSEs(Th,U,Nd,Sm,Ta and Nb),displaying crust and mantle element *** show a strong positive Ce anomaly and negative Eu anomaly,similar to the characteristics of crustal source magmatic zircon,however the(Lu/Gd)N ratio ranges from 1.48 to 3.17,and the(Yb/Sm)N ratio ranges from 38.49 to 77.15,which are similar to the characteristics of mantle-derived magmatic *** the La/Yb-δEu correlation diagram,the data plots near the boundary between crust type and crust-mantle *** the combined‘trinity’spatiotemporal relationship of Indosinian intermediate-acid alkali intrusive rocks in the Panxi area with E’meishan basalt and basic-ultrabasic intrusive rocks,the regional tectonic evolution and the partial melting model of the most intraplate magma sources,we believe that the Luku alkali syenite in Sichuan was formed from the partial melting of a crust-mantle source material,due to underplating of the mantle plume basic magma.

关键词： alkali syenite mantle plume LA-ICP-MS dating of zircon REE mineralization Hongge ore deposit

川西九龙白台花岗岩地球化学特征、锆石U-Pb年龄和Hf同位素组成及其稀有金属成矿意义

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地质论评 2024年第2期70卷 449-475页

作者：胡军亮谭洪旗倪志耀周家云朱志敏周雄骆志红岳相元牛腾徐力黄驰轩成都理工大学地球与行星科学学院成都610059 中国地质科学院矿产综合利用研究所成都610041 四川省地质矿产(集团)有限公司成都610016 中国地质调查局稀土资源应用技术创新中心成都610041 四川省第三地质大队成都611230

为揭示川西九龙白台花岗岩成因及其与稀有金属成矿的关系,笔者等对白台花岗岩开展了岩相学、岩石地球化学、LA-ICP-MS锆石U-Pb年代学、锆石微量元素地球化学、Hf同位素地球化学测试。结果显示,白台黑云母二长花岗岩具高SiO_(2)(69.01%~7... 详细信息

为揭示川西九龙白台花岗岩成因及其与稀有金属成矿的关系,笔者等对白台花岗岩开展了岩相学、岩石地球化学、LA-ICP-MS锆石U-Pb年代学、锆石微量元素地球化学、Hf同位素地球化学测试。结果显示,白台黑云母二长花岗岩具高SiO_(2)(69.01%~70.55%)、高K_(2)O(3.86%~4.99%)、高碱(K_(2)O+Na_(2)O=7.41%~8.18%),低CaO(1.49%~2.2%)、低MgO(0.44%~0.57%)等特征,里特曼指数σ=2.03~2.43,A/CNK=1.07~1.14,为弱过铝质的高钾钙碱性系列岩石;微量元素特征显示相对富集Rb、K等大离子亲石元素,相对亏损Nb、P、Hf等高场强元素;球粒陨石标准化的稀土元素配分模式为明显的轻稀土富集和重稀土亏损的右倾型。白台黑云母二长花岗岩锆石U-Pb年龄为(213~212)Ma,ε_(Hf)(t)值为-7.4~-1.1,Hf同位素二阶模式年龄T_(DM2)为(1.6~1.2)Ga。研究结果表明,白台花岗岩形成于后碰撞伸展背景,是在松潘—甘孜地块遭受挤压碰撞后,增厚的岩石圈地幔拆沉,软流圈地幔物质上涌后发生减压熔融形成的晚三叠世I型花岗岩。同时,笔者等认为白台伟晶岩型铍矿床与白台花岗岩密切相关,是该花岗岩体残余岩浆热液分异的产物。

关键词：岩石成因岩石地球化学锆石U-Pb年代学 Hf同位素花岗岩松潘—甘孜地块

牙周辅助加速成骨正畸术对牙周软组织影响的研究进展

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口腔医学 2024年第4期44卷 303-306页

作者：江静冯剑颖周佳赟陈梦含轩东英浙江中医药大学口腔医学院浙江杭州310053 浙江中医药大学附属口腔医院正畸科浙江杭州310053 中国科学院大学杭州口腔医院牙周科浙江杭州310053

牙周辅助加速成骨正畸(periodontally accelerated osteogenic orthodontics,PAOO)术是选择性牙槽骨骨皮质切开联合局部颗粒骨移植促进正畸的一项临床治疗技术。其生物学理论基于区域加速现象(regional acceleratory phenomenon,RAP)。大量临床研究表明,PAOO术有缩短正畸疗程、增加牙槽骨量、降低牙根吸收风险的临床效果,但目前尚缺乏一个全面系统的综述来分析PAOO术对牙周软组织预后的影响。本综述旨在评价PAOO术在可能改善牙周软组织方面的有效证据,为该技术的临床应用提供参考。

关键词： PAOO 骨皮质切开术牙龈表型牙龈退缩角化龈宽度

‘果真好1号’与其亲本‘大五星’枇杷果实苹果酸代谢差异比较

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四川农业大学学报 2024年第3期42卷 546-553页

作者：周甲云张坤王羊宋潘晖张慧芬罗弦郝宇轩邓群仙四川农业大学园艺学院成都611130

【目的】研究‘果真好1号’及亲本‘大五星’枇杷果实主要有机酸——苹果酸代谢差异,明确其积累规律、相关酶活性及相关基因表达的差异,以期为枇杷生产过程中有机酸的调控与低酸新品种的培育提供理论依据。【方法】以‘大五星’和‘果真... 详细信息

【目的】研究‘果真好1号’及亲本‘大五星’枇杷果实主要有机酸——苹果酸代谢差异,明确其积累规律、相关酶活性及相关基因表达的差异,以期为枇杷生产过程中有机酸的调控与低酸新品种的培育提供理论依据。【方法】以‘大五星’和‘果真好1号’枇杷不同发育时期的果实为材料,测定可滴定酸含量、有机酸组分及其含量、苹果酸相关酶活性以及代谢相关基因表达量。【结果】2个枇杷品种的果实发育前期主要积累酒石酸和琥珀酸,发育后期主要积累苹果酸,苹果酸含量均随果实发育呈先上升后下降的趋势。与‘大五星’相比,‘果真好1号’成熟期时可滴定酸、有机酸、苹果酸含量分别显著增加了17.6%、25.2%和35.6%,苹果酸合成酶NAD-MDH活性显著提高和降解酶NADP-ME活性显著降低。基因的相对表达量结果表明,EjPEPC、EjMDH和EjNADP-ME的表达水平在成熟‘果真好1号’果实中较‘大五星’显著上调,而EjNADP-ME4显著下调。相关性分析表明,2个枇杷品种的苹果酸含量均与NAD-MDH活性和EjNAD-MDH的表达水平呈显著正相关,与EjPEPC2和EjNADP-ME4的表达水平呈显著负相关。【结论】成熟期‘果真好1号’中EjNAD-MDH的高表达提高了NAD-MDH活性,‘大五星’EjNADP-ME4的高表达提高了NADP-ME活性,导致‘果真好1号’苹果酸合成速率增快而降解速率减慢,最终导致其苹果酸含量高于‘大五星’。

关键词：枇杷果实有机酸苹果酸代谢基因表达

氨基酸水溶肥对枇杷幼苗生长及养分吸收的影响

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四川农业大学学报 2024年第1期42卷 103-110页

作者：向胤春彭春华林立金宋潘晖周甲云栗欣宇邓群仙四川农业大学园艺学院成都611130 成都市龙泉驿区农业农村局成都610100 四川农业大学果蔬研究所成都611130

【目的】探讨氨基酸水溶肥对枇杷生长及养分吸收的影响。【方法】以1 a生‘大五星’幼苗(Eriobotrya japonica L.)为试材,喷施稀释0(对照,蒸馏水)、50、100、150和200倍的氨基酸水溶肥,测定相关生理指标。【结果】氨基酸水溶肥增加了枇... 详细信息

【目的】探讨氨基酸水溶肥对枇杷生长及养分吸收的影响。【方法】以1 a生‘大五星’幼苗(Eriobotrya japonica L.)为试材,喷施稀释0(对照,蒸馏水)、50、100、150和200倍的氨基酸水溶肥,测定相关生理指标。【结果】氨基酸水溶肥增加了枇杷幼苗的生物量,且100倍时枇杷幼苗根系和地上部生物量最大,分别较对照增加了21.45%和44.41%。氨基酸水溶肥提高了枇杷幼苗全氮、全磷和全钾含量,且100倍时枇杷幼苗地上部全氮和全磷含量最高,分别较对照提高了70.01%和32.49%;150倍时地上部全钾含量最高,较对照提高了36.44%。相关分析和灰色关联度分析表明,枇杷幼苗全氮、全磷和全钾含量与生物量密切相关,表明氨基酸水溶肥促进枇杷幼苗吸收养分进而促进幼苗生长。【结论】氨基酸水溶肥可有效促进枇杷幼苗的生长和养分吸收,并以稀释100倍时效果最佳。

关键词：氨基酸水溶肥枇杷幼苗养分吸收生长

Sea-level Eustatic Cycles and Potash Formation Event:A Case Study of Triassic Sichuan Basin

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 285-286页

作者： zhou jiayun GONG Daxing CHEN Kegui LI Chunmei LI Meng Institute of Multipurpose Utilization of Mineral Resources Chinese Academy of Geological Sciences Chengdu University of Techology College of Resources and Environment Southwest Petroleum University Research Institute of Petroleum Exploration & Development Petro-China

Identification of the favorable salt-and potash-forming layer,we still mainly rely on logging interpretation and coring ***,we both know that the continuously carbonate platform is cyclical *** has recorded valuable information about the phase transition of carbonate rocks,which were synchronized with the relative sea-level *** paper presents a fast and

关键词： Marine carbonate platform depositional cycles potassium-rich layer well logging response Triassic Sichuan Basin

Enclosed Extent of the Saline Water and its Constraints on the Sedimentary and Salt Forming Characteristics:A Case Study of the Paleogene Playas in Hoh Xil Basin

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 320-322页

作者： GONG Daxing YI Haisheng zhou jiayun WU Chi Hua Xia Guoqing Institute of Multipurpose Utilization of Mineral Resources Chinese Academy of Geological Sciences Chengdu University of Techology

1 Introduction There is a long period of hot,arid climates in the Jurassic-Neogene,in the eastern of the Neo-Tethys where is been called Western Yunnan—Qiangtang tectonic belt(Zheng et al.,2010).Especially in the Paleogene,under the control of the planetary winds and the north subtropical high pressure belts,a ribbon arid,semi-arid

关键词： Enclosed extent Paleogene playas sedimentary and salt forming characteristics Hoh Xil Basin

A study of transarterial infusion chemotherapy of gemcitabine plus three dimensional conformal radiotherapy for local advanced pancreatic cancer

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The Chinese-German Journal of Clinical Oncology 2007年第3期6卷 237-240页

作者： Zhaojun Ding Yanwei Sun jiayun zhou Department of Medical Oncology Rizhao City People＇s Hospital Rizhao 276800 China

Objective: To evaluate the clinical effect of transarterial infusion chemotherapy of gemcitabine plus three dimen- sional conformal radiotherapy on patients with local advanced pancreatic cancer. Methods: Fifty-one patients with local ad- vanced pancreatic cancer from June 2002 to February 2004 were enrolled, twenty-four patients of combined group were treat- ed with transarterial infusion chemotherapy of gemcitabine plus three dimensional conformal radiotherapy, while twenty-seven patients of control group were treated only with transarterial infusion chemotherapy of gemcitabine. Results: There were significant statistical differences between two groups in clinical benefit response (91.7% versus 74.1%, P < 0.01) and overall remission rate (70.8% versus 33.3%, P < 0.01). The 6-month survival rate, 12-month survival rate and 24-month survival rate of combined group were 83.3%, 62.5% and 37.5% respectively, while that of control group were 55.6%, 33.3% and 11.1% respectively. This showed significant difference between the two groups. Conclusion: Transarterial infusion chemotherapy of gemcitabine plus three dimensional conformal radiotherapy may be better than single transarterial infusion chemotherapy of gemcitabine in improving survival rates and elongating survival time of patients with local advanced pancreatic cancer.

关键词： three dimensional conformal radiotherapy pancreatic cancer transarterial infusion chemotherapy