检索结果-南通市图书馆

民俗体育重塑乡村共同体的运行机制与现实路径研究

在线全文

学校读者我要写书评

暂无评论

黑河学院学报 2024年第9期15卷 170-173页

作者：牛曼兰闫井明安徽新华学院通识教育部安徽合肥230088 安徽新华学院艺术学院安徽合肥230088

民俗体育对于重塑乡村共同体产生重要价值,体现于政治、经济、文化、社会等方方面面。从运行机制来看,民俗体育重塑乡村共同体的运行机制包括:追溯历史渊源,提出“共创、共享”的发展逻辑;确认目标指向,打造“继承、发扬”的发展链条;... 详细信息

民俗体育对于重塑乡村共同体产生重要价值,体现于政治、经济、文化、社会等方方面面。从运行机制来看,民俗体育重塑乡村共同体的运行机制包括:追溯历史渊源,提出“共创、共享”的发展逻辑;确认目标指向,打造“继承、发扬”的发展链条;依托现实条件,落实“创新、创造”的发展举措。在现实路径考量上,应注重发挥赛事交流作用,普及民俗体育文化;推进产业融合发展,达成经济引流效果;衔接乡村教育体系,提升大众基础认知;深化民俗体育研究,奠定创新创造根基;开发大众传媒阵地,增强多元主体交流,以此来充分释放民俗体育在重塑乡村共同体中的价值作用。

关键词：民俗体育乡村共同体运行机制

Lajishan Ayishan Formation Rhyolites: Implications for the Closure Time of the Proto-Tethys Ocean

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2020年第S01期94卷 55-56页

作者： SUN Yi niu manlan LI Xiucai Hefei University of Technology HefeiAnhui230009China

The Qilian orogenic belt,as an important component of the central orogenic system,can be divided into three tectonic units from north to south:the North Qilian tectonic belt,the Central Qilian tectonic belt and the South Qilian tectonic *** Lajishan ophiolitic mélange zone is an important part of the South Qilian tectonic *** study of the formation age and tectonic attributes of the different rock units in the Lajishan is of great significance for reconstructing the tectonic evolution of the south Qilian tectonics belt and the Proto-Tethys *** Ayishan formation is an important unit of the Lajishan mélange belt,but its stratigraphic age and formation environment are still not constrained,which limits the reconstruction of the early Palaeozoic tectonic evolution of the South Qilian tectonic belt and the closure time of the Proto-Tethys *** recent years,a set of rock assemblages consisting of andesite,rhyolite,sandstone and pebbly sandstone have been identified in the Ayishan formation exposed in the Lajishan through detailed geological mapping in the *** are in fault contact with the underlying ophiolite mé***,a volcano-sedimentary succession consisting of andesite,rhyolite,volcanic breccia,and volcaniclastic sandstone nonconformably overlies the Cambrian arc-accretionarycomplex system in the Ayishan *** rocks were originally assigned to the Ayishan formation and attributed an Early Ordovician age(BGMRQP,1964,1991).Our rhyolite samples from the Ayishan formation yielded a weighted mean 206Pb/238U age of 447 Ma using zircon U-Pb dating,which can be interpreted as the eruption age of the volcanic *** volcanic rock assemblages are distributed in sandstone,pebbled sandstone and conglomerate in the form of ***,the zircon UPb age of the volcanic rocks can constrain the age of Ayishan formation that it should belong to the late Ordovician rather than early ***,we propose that the Ay

关键词： Lajishan rhyolite Proto-Tethys Ocean South Qilian

An Early Paleozoic Ultramafic Complex in the North Wulan Metamorphic Complex,North Qaidam:Contraints on the Nature of the Alaskan-type Continental Arc Root

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2023年第5期97卷 1388-1405页

作者： SHAN Jinming niu manlan LI Xiucai LI Chen WANG Lei ZHANG Shuai School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China

Orogenic peridotite is an important component of orogenic belts and retains crucial information on mantle magmatic activity,slab subduction,and melt or fluid *** determine the source of the mantle-derived parental magma of the peridotite and to investigate the metasomatism that it experienced,we undertook an integrated study of the petrography,whole-rock major-and trace-element compositions,in situ zircon U-Pb geochronology,and mineral majorand trace-element compositions of an early Paleozoic ultramafic complex in the North Wulan area of North *** Halihatu ultramafic-mafic complex is composed of dunite,pyroxene peridotite,and gabbro,which are characteristic of Alaskan-type *** dunite yields a weighted mean^(206)Pb/^(238)U age of 479±5 Ma(MSWD=0.7),which reflects the age of the metasomatism rather than the crystallization age of the ultramafic *** peridotites have high Mg^(#)(89.8-91.8)and Cr contents(2419-5190 ppm),low Al_(2)O_(3)(0.20-1.68 wt%)and Ni(289-1012 ppm)contents,and high olivine Fo contents(87-91),suggesting a large degree(~15%-22%)of partial melting of lithospheric ultramafic rocks followed by variable degrees of fractional crystallization of olivine and *** is consistent with estimates of 15%-22.3%partial melting calculated using the Cr#of spinel crystals and with the low Yb(0.04-0.33 ppm)and Y(0.72-1.29 ppm)contents of clinopyroxene ***-rock trace-element patterns show enrichment in large ion lithophile elements and depletion in high field strength elements,along with high Al_(2)O_(3)(2.10-6.47 wt%)and low TiO_(2)(0.01-0.21 wt%)contents of clinopyroxene crystals,suggesting an arc magma cumulate *** features,along with the high olivine Fo contents(87-91 ppm),imply that the Halihatu peridotite is an Alaskan-type crustal cumulates derived from Mgrich hydrous basaltic *** high estimated f O_(2)(FMQ+1.97 to FMQ+3.81)further supports the idea that they formed in an arc *** Ni/Co an

关键词： Alaskan-type complex orogenic peridotite arc magmatism melt-rock interaction north Qaidam

Crustal deformation and dynamics of Early Cretaceous in the North China Craton

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2021年第9期64卷 1428-1450页

作者： Guang ZHU Yuanchao LU Nan SU Xiaodong WU Hao YIN Shuai ZHANG Chenglong XIE manlan niu School of Resource and Environmental Engineering Hefei University of TechnologyHefei230009China

The Early Cretaceous represents a peak period of the North China Craton(NCC)destruction.A comprehensive analysis of crustal deformation during this period can reveal processes and dynamics of the *** peak destruction of the NCC was associated with intense extension whose representative deformation products are metamorphic core complexes(MCCs),extensional domes and rifted *** MCCs occurred along both northern and southern margins of the NCC,and resulted from synchronous extension and magmatism,showing difference from the typical orogen-type MCCs in many *** MCCs of the Early Cretaceous were replaced by extensional domes under relatively weak extension and *** contrast to a major depression-type basin of the Early Cretaceous in the western NCC,rifted basins of the same age in the eastern NCC appeared as medium-to small-scale ones *** the eastern NCC,the rifted basins north of the Bohai Bay are characterized by a feature similar to an active rift whereas those south of the Bohai present similarity to a passive *** sorts of extensional structures developed during the peak destruction indicate a stable stress state of NE-SE extension over the entire central to eastern NCC,consistent with the plate margin-driven stress *** distribution of the extensional structures presents an 1800 km wide back-arc extension region in the central to eastern NCC,consistent with the Paleo-Pacific slab rollback model following flat ***-spatial variation of initial extension and volcanic activity during the peak period also supports the rollback model right after the flat oceanic *** crustal deformation evolution demonstrates that the peak destruction of the NCC took place after the B-episode compression of the Yanshan Movement of the earliest Early Cretaceous and terminated with onset of the C-episode compression of the earliest Late Cretaceous.

关键词： Peak period of craton destruction Metamorphic core complex Extensional domes Rifted basins Dynamic setting

肥东花岗质岩脉的变形及年代学特征对郯庐断裂带早白垩世构造活动的指示

在线全文

学校读者我要写书评

暂无评论

岩石学报 2016年第4期32卷 1049-1066页

作者：韩雨牛漫兰合肥工业大学资源与环境工程学院合肥230009

郯庐断裂带肥东段位于大别造山带与苏鲁造山带之间。在肥东段西韦采石场内发育了大规模的北北东向左行走滑韧性剪切带和一条低角度的韧性滑脱正断层。走滑韧性剪切带为郯庐断裂带走滑活动的产物,低角度滑脱正断层则代表了伸展背景下的... 详细信息

郯庐断裂带肥东段位于大别造山带与苏鲁造山带之间。在肥东段西韦采石场内发育了大规模的北北东向左行走滑韧性剪切带和一条低角度的韧性滑脱正断层。走滑韧性剪切带为郯庐断裂带走滑活动的产物,低角度滑脱正断层则代表了伸展背景下的构造活动。低角度滑脱正断层上、下盘发育未变形和变形的岩脉,走滑韧性剪切带内外也发育有受剪切带活动而变形的岩脉。对采石场内岩脉的构造和同位素年代学研究表明,低角度韧性滑脱正断层在129～126Ma之间发生过剪切活动,走滑韧性剪切带的活动时间在125Ma之后。综合研究认为,郯庐断裂带的伸展活动可能开始于早白垩世早期（130Ma）,但在早白垩世并非一直处于伸展活动之中,125Ma之后的左行走滑活动很可能发生在早白垩世的晚期。

关键词：伸展构造走滑活动锆石U-Pb 变形岩脉郯庐断裂带

Neoproterozoic Crustal Reworking and Growth in the Zhangbaling Uplift, Tan-Lu Fault Zone: Evidence from the Feidong Complex and Zhangbaling Group

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2020年第6期94卷 1921-1939页

作者： niu manlan CAI Qianru WU Qi YUAN Xiaoyu SUN Yi LI Xiucai LI Chen ZHU Guang LI Zhensheng ZHANG Shuai School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China

Intensive mid-Neoproterozoic magmatism is the salient feature of the Yangtze Block,preserving abundant information about crustal reworking and *** U-Pb-Lu-Hf isotope analysis was performed on material from the Feidong Complex(FDC)and Zhangbaling Group(ZBLG)of the Zhangbaling Uplift,in order to determine the age and magmatic source of the Neoproterozoic igneous rocks as well as the detrital provenance for the sedimentary rocks,to further provide important data for understanding the mid-Neoproterozoic crustal evolution of the Northeast Yangtze *** amphibolite and gneissic granites in the Feidong Complex(FDC)gave similar protolith ages of 782-776 *** synmagmatic zircons exhibited variable negativeεHf(t)values of-26.9 ***(ca.2.4 Ga)to late Paleoproterozoic(ca.2.0-1.9 Ga)inherited zircons were found in the gneissic monzogranite,with negativeεHf(t)values of-11.2 to-7.2,indicating strong reworking of the ancient crustal materials of the Northeast Yangtze *** the amphibolites represent minor crustal growth through emplacement of continental rifting-related mafic *** quartz-keratophyres in the Xileng Formation of the ZBLG in contrast systematically yield young protolith crystallization ages of 754-727 Ma with highεHf(t)values of-2.0 to+5.6,indicating their derivation from the reworking of juvenile crustal *** detrital zircons from the metasiltstone in the Beijiangjun Formation yield variable^(206)Pb/^(238)U ages(871-644 Ma)with a peak age at 741±11 Ma andεHf(t)values of-4.3 to+5.3,which is consistent with those of the Xileng Formation,but distinct from the FDC,indicating that the provenance of the metasiltstone is primarily the underlying Xileng *** mid-Neoproterozoic igneous and sedimentary rocks of the Zhangbaling Uplift were products from continental rifting zones along the northern margin of the Yangtze Block,situated in different positions from the Susong Complex and the Haizhou *** transition from a

关键词： zircon U-Pb age Lu-Hf isotope crustal reworking Neoproterozoic magmatism Zhangbaling Uplift

张八岭地区中生代岩体中黑云母的^(40)Ar-^(39)Ar年龄及其地质意义

在线全文

学校读者我要写书评

暂无评论

地质科学 2006年第2期41卷 217-225页

作者：牛漫兰合肥工业大学资源与环境工程学院合肥230009

张八岭地区顺郯庐断裂带由北向南出露了管店、瓦屋刘和瓦屋薛3个岩体,岩性分别为花岗闪长岩、石英二长岩和花岗岩。对其中两个侵入岩体中黑云母进行了40Ar-39Ar定年研究。张八岭隆起北段瓦屋刘石英二长岩和瓦屋薛花岗岩中黑云母的40Ar-3... 详细信息

张八岭地区顺郯庐断裂带由北向南出露了管店、瓦屋刘和瓦屋薛3个岩体,岩性分别为花岗闪长岩、石英二长岩和花岗岩。对其中两个侵入岩体中黑云母进行了40Ar-39Ar定年研究。张八岭隆起北段瓦屋刘石英二长岩和瓦屋薛花岗岩中黑云母的40Ar-39Ar坪年龄分别为127.84±0.77Ma和119.97±0.64Ma,表明岩浆活动主要发生在早白垩世中期。结合最近断裂带内走滑糜棱岩中角闪石143.3±1.3Ma的40Ar-39Ar年龄,暗示了早白垩世中期断裂带内出现岩浆活动时,郯庐断裂带已转变成正断层活动,而不是以往认为由断裂带走滑诱发的岩浆活动,与华北地块东部岩石圈减薄的峰期时间基本一致。

关键词： Ar-Ar年代学岩石圈减薄郯庐断裂带中生代侵入岩

Mantle Response to Slab Breakoff in the North Qaidam Tectonic Belt: Geochemical Constraints from Syn-subduction Mafic Igneous Rocks

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2020年第S01期94卷 26-27页

作者： LI Xiucai niu manlan CAI Qianru WU Qi SUN Yi YUAN Xiaoyu LI Chen Hefei University of Technology Hefei Anhui 230009

Slab breakoff originally denotes the detachment of dense subducted oceanic slab from the light subducted continental slab, which is driven by opposing buoyancy forces during continental collision(Davies and von Blanckenburg, 1995;von Blanckenburg and Davies, 1995). The breakoff of subducted oceanic slab can induce the upwelling of sub-slab asthenosphere through the slab window, and then heat the overriding lithospheric mantle resulting in the melting of its fertile layer within the metasomatic mantle wedge. The decompression partial melting of uprising asthenospheric mantle commonly produce mafic magma with depleted MORB-like geochemical signatures(Davies and von Blanckenburg, 1995;Cole et al., 2006;Wang et al., 2018), whereas the partial melting of enriched lithospheric mantle will produce mafic magma with alkaline, calc-alkaline or ultrapotassic features(von Blanckenburg and Davies, 1995). These mafic magmas rise into overlying lower crust and trigger crustal melting to generate the granitic magma. The North Qaidam tectonic belt(NQTB) records the evolutionary process of the South Qilian Ocean from subduction to closure. The subduction of oceanic and continental lithosphere to mantle depths is proven by the identification of oceanic-type and continental-type eclogites enclosed in crustal metapelite and gneiss from the North Qaidam tectonic belt(Song et al., 2006;Zhang et al., 2008;Zhang et al., 2010;Zhang et al., 2017). However, details of this process are not exactly constrained, in particularly, the closure timing of South Qilian Ocean. The study of characteristic mafic magmatism, combined with the previous studies of ultra-high pressure metamorphism, give us an excellent opportunity to trace the detailed processes associated with the transition from oceanic subduction to continental subduction, and assess the feasibility of slab breakoff in the North Qaidam tectonic belt. In this contribution, an integrated study of petrology, geochemistry, geochronology and Sr-

关键词： mafic igneous rocks mantle slab break-off North Qaidam early Paleozoic

张八岭隆起南缘早白垩世火山岩稀土元素对比研究

在线全文

学校读者我要写书评

暂无评论

中国稀土学报 2006年第6期24卷 739-744页

作者：牛漫兰合肥工业大学资源与环境工程学院安徽合肥230009

张八岭隆起南缘早白垩世火山岩与北大别山东部、庐枞盆地、鲁西同期火山岩同属于中国东部岩石圈伸展减薄背景下形成的火山岩。然而稀土元素地球化学特征却反映出,张八岭隆起南缘火山岩来源于壳幔过渡带,而北大别山东缘同期火山岩与岩浆... 详细信息

张八岭隆起南缘早白垩世火山岩与北大别山东部、庐枞盆地、鲁西同期火山岩同属于中国东部岩石圈伸展减薄背景下形成的火山岩。然而稀土元素地球化学特征却反映出,张八岭隆起南缘火山岩来源于壳幔过渡带,而北大别山东缘同期火山岩与岩浆上升过程中地壳物质的混染有关,庐枞盆地火山岩岩浆来自与俯冲洋壳有关的富集地幔部分熔融,鲁西地区火山岩岩浆与俯冲的陆壳在地幔源区发生混染和交代形成的富集型地幔部分熔融有关。稀土元素研究的结果与构造背景、微量元素以及Sr,Nd同位素等研究相吻合,进一步表明稀土元素在火山岩岩浆来源方面有很好的示踪作用。岩浆的来源不同以及研究区大型断裂的作用正是张八岭隆起地区成为金矿成矿远景区的重要原因。

关键词：地球化学火山岩张八岭隆起稀土