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| 1 | 拉萨地体的起源和古生代构造演化显示文摘早期由于资料有限,对拉萨地体古生代时期的裂解、漂移、俯冲和碰撞历史的认知程度还很低。本文利用目前已有地质和地球化学资料,分析了拉萨地体的中生代岩石圈结构,探讨了拉萨地体的起源和古生代演化历史。大量长英质岩石的锆石Hf同位素和全岩Nd同位素表明,南部和北部拉萨地体以新生地壳为主,部分地区可能存在前寒武纪结晶基底,而中部拉萨地体是具有古元古代甚至太古代结晶基底的条带状微陆块。大量古生代沉积岩的碎屑锆石U-Pb年龄数据表明,拉萨地体约1170Ma的碎屑锆石年龄指标,明显不同于以约950Ma为碎屑锆石年龄指标的安多、羌塘和特提斯喜马拉雅。拉萨地体起源于澳大利亚大陆北缘是目前资料情况下的最合理解释。中部拉萨地体约492Ma的双峰式火山岩形成于活动大陆边缘背景,代表了古地理上位于澳大利亚大陆北缘的岩浆弧的一部分,可能与原特提斯洋岩石圈板片的断离有关。拉萨地体南缘和南羌塘的泥盆纪末期—石炭纪早期片麻状花岗岩类为存在明显幔源物质输入的S型花岗岩,可能形成于最终演化为松多特提斯洋的弧后盆地背景。中二叠世末期发生的拉萨地体与澳大利亚大陆北缘的碰撞造山事件可能触发了班公湖—怒江特提斯洋岩石圈的南向俯冲,并随后对拉萨地体的中生代构造岩浆演化发挥关键性作用。 | 朱弟成 赵志丹 牛耀龄 王青 Yildirim DILEK 董国臣 莫宣学 | 2012 | 高校地质学报2012,18,1: | 87 |
| 2 | 西藏雅鲁藏布蛇绿岩形成构造环境的地球化学鉴别显示文摘本文对西藏雅鲁藏布蛇绿岩带中部日喀则地区夏鲁蛇绿岩中的基性岩石进行了元素地球化学研究。岩石为低钾亚碱性玄武质岩石,具有低TiO2(0.64%~1.5%)、低K2O(<0.69%)、富Na2O(2.5%~6.0%)、烧失量普遍较高(2.0%~7.5%)的特征,表明样品普遍遭受蚀变。岩石具有与N-MORB类似的稀土元素和总体一致的微量元素特征,但是岩石明显富集大离子亲石元素和亏损高场强元素,显示了洋脊玄武岩向着岛弧岩浆作用的过渡趋势。日喀则蛇绿岩不是典型的洋中脊成因,应为SSZ型蛇绿岩,可能形成于与洋内俯冲有关的SSZ型的弧后或者弧前盆地中。对东西延伸超过1500km的雅鲁藏布蛇绿岩246套基性岩石形成的构造环境进行的地球化学判别,表明至少存在大陆岛弧型、地幔柱-洋内热点型、洋中脊-大洋岛弧型和典型大洋岛弧型等四种类型洋壳,揭示了特提斯洋存在多种构造环境的特征,有利于恢复和还原一个长期演化的、丰富的特提斯洋。 | 李文霞 赵志丹 朱弟成 董国臣 周肃 莫宣学 Don DePAOLO Yildirim DILEK | 2012 | 岩石学报2012,28,5: | 23 |
| 3 | Four billion years of ophiolites reveal secular trends in oceanic crust formation显示文摘We combine a geological,geochemical and tectonic dataset from 118 ophioiite complexes of the major global Phanerozoic orogenic belts with similar datasets of ophiolites from 111 Precambrian greenstone belts to construct an overview of oceanic crust generation over 4 billion years.Geochemical discrimination systematics built on immobile trace elements reveal that the basaltic units of the Phanerozoic ophiolites are dominantly subduction-related(75%),linked to backarc processes and characterized by a strong MORB component,similar to ophiolites in Precambrian greenstone sequences(85%).The remaining 25%Phanerozoic subduction-unrelated ophiolites are mainly(74%) of Mid-Ocean-Ridge type(MORB type),in contrast to the equal proportion of Rift/Continental Margin,Plume,and MORB type ophiolites in the Precambrian greenstone belts.Throughout the Phanerozoic there are large geochemical variations in major and trace elements,but for average element values calculated in 5 bins of 100 million year intervals there are no obvious secular trends.By contrast,basaltic units in the ophiolites of the Precambrian greenstones(calculated in 12 bins of 250 million years intervals),starting in late Paleo- to early Mesoproterozoic(ca.2.0-1.8 Ga),exhibit an apparent decrease in the average values of incompatible elements such as Ti,P,Zr,Y and Nb,and an increase in the compatible elements Ni and Cr with deeper time to the end of the Archean and into the Hadean.These changes can be attributed to decreasing degrees of partial melting of the upper mantle from Hadean/Archean to Present.The onset of geochemical changes coincide with the timing of detectible changes in the structural architecture of the ophiolites such as greater volumes of gabbro and more common sheeted dyke complexes,and lesser occurrences of ocelli(varioles) in the pillow lavas in ophiolites younger than 2 Ga.The global data from the Precambrian ophiolites,representative of nearly 50%of all known worldwide greenstone belts provide significant clues for the operation of plate tectonic processes in the Archean. | Harald Furnes Maarten de Wit Yildirim Dilek | 2014 | Geoscience Frontiers2014,5,4: | 13 |
| 4 | 西藏拉萨地块过铝质花岗岩中继承锆石的物源区示踪及其古地理意义显示文摘富含继承锆石的过铝质花岗岩一般来源于富铝质岩石(如变泥质岩)的部分熔融,因而分析这些继承锆石的U-Pb年龄可以像分析沉积岩碎屑锆石的U-Pb年龄一样,提供过铝质花岗岩源区物质中碎屑沉积物物源区的丰富信息。本文报道了中部拉萨地块早侏罗世过铝质花岗岩的全岩地球化学和锆石U-Pb年代学数据,结合拉萨地块已有二叠纪和晚三叠世过铝质花岗岩的继承锆石年代学数据,总结了目前已有的拉萨地块过铝质花岗岩的继承锆石U-Pb年龄特征(共199个谐和测点)。这些过铝质花岗岩属强过铝质S型花岗岩,其中的继承锆石定义了1250~1100Ma(峰值1181±14Ma)和550~450Ma(峰值494±7Ma)2个最突出的年龄群,分别可比于拉萨地块古生代沉积岩的碎屑锆石年龄峰值(约1170Ma)和寒武纪火山岩的侵位时代,明显不同于西羌塘、安多和特提斯喜马拉雅新元古代-古生代沉积岩中的碎屑锆石年龄频谱。拉萨地块过铝质花岗岩中约1181Ma的继承锆石,可能与拉萨地块古生代沉积岩中的同期碎屑锆石一样,都来自澳大利亚南西部Albany-Fraser造山带和东南极Wilkes等地,而约494的继承锆石,既可能来自澳大利亚西部,也可能来自拉萨地块本地。本文提供了拉萨地块与澳大利亚大陆北缘具有古地理联系的过铝质花岗岩继承锆石U-Pb年龄证据。拉萨地块的研究实践表明,采用过铝质花岗岩继承锆石和古生代沉积岩碎屑锆石相结合的锆石U-Pb年代学方法,可为重建冈瓦纳大陆北缘其它微陆块的古地理和构造岩浆演化提供重要约束。 | 朱弟成 赵志丹 牛耀龄 王青 DILEK Yildirim 管琪 刘勇胜 莫宣学 | 2011 | 岩石学报2011,27,7: | 12 |
| 5 | Diamonds Discovered from High–Cr Podiform Chromitites of Bulqiza,Eastern Mirdita Ophiolite,Albania显示文摘Various combinations of diamond, moissanite, zircon, corundum, rutile and titanitehave been recovered from the Bulqiza chromitites. More than 10 grains of diamond have been recovered, most of which are pale yellow to reddish–orange to colorless. The grains are all 100–300 μm in size and mostly anhedral, but with a range of morphologies including elongated, octahedral and subhedral varieties. Their identification was confirmed by a characteristic shift in the Raman spectra between 1325 cm^(-1) and 1333 cm^(-1), mostly at 1331.51 cm^(-1) or 1326.96 cm^(-1). This investigation extends the occurrence of diamond and moissanite to the Bulqiza chromitites in the Eastern Mirdita Ophiolite. Integration of the mineralogical, petrological and geochemical data of the Bulqiza chromitites suggests their multi–stage formation. Magnesiochromite grains and perhaps small bodies of chromitite formed at various depths in the upper mantle, and encapsulated the ultra–high pressure, highly reduced and crustal minerals. Some oceanic crustal slabs containing the magnesiochromite and their inclusion were later trapped in suprasubduction zones, where they were modified by tholeiitic and boninitic arc magmas, thus changing the magnesiochromite compositions and depositing chromitite ores in melt channels. | XIONG Fahui YANG Jingsui ROBINSON Paul T. DILEK Yildirim MILUSHI Ibrahim XU Xiangzhen ZHOU Wenda ZHANG Zhongming RONG He | 2017 | Acta Geologica Sinica(English Edition)2017,91,2: | 9 |
| 6 | Probing the Troodos Ophiolite:IGCP-649 Workshop and Field Excursion Held in Agros-Cyprus显示文摘The second IGCP-649 Workshop,held in Agros-Cyprus during 14-20 May 2016,brought together nearly fifty international scientists from around the world,and included a 5-day field excursion on the classic Troodos ophiolite.Organized by the IGCP-649 Project Leadership and the Geological Survey Department of Cyprus。 | YANG Jingsui Julian PEARCE Yildirim DILEK | 2016 | Acta Geologica Sinica(English Edition)2016,90,3: | 4 |
| 7 | Application of the modern ophiolite concept with special reference to Precambrian ophiolites显示文摘Much has been learned in the past 40 years about the great diversity of the internal structure and geochemical compositions of Phanerozoic ophiolites, indicating that these on-land fragments of ancient oceanic lithosphere formed in distinctly different tectonic settings during their igneous evolution. Recent studies in Archean and Proterozoic greenstone belts have shown that the Precambrian rock record may also include exposures of a diverse suite of ophiolite complexes as part of craton development in the early history of the Earth. We review the salient features of the Precambrian ophiolite record to highlight what has been learned about Precambrian oceanic spreading systems since the original Penrose definition of ophiolites in 1972. Some of the diagnostic, characteristic, typical, and rare aspects of ophiolites of all ages are presented in a table in order to help determine if tectonically deformed and metamophosed sequences in Precambrian shield areas may be considered as ophiolites. The results of this comparative study are important in that they enable researchers to more realistically characterize allochthonous mafic/ultramafic rock sequences as ophiolitic or non-ophiolitic. This approach is more deterministic in contrast to some other arbitrary classification schemes requiring three or four of the Penrose-style ophiolitic units to be present in the Precambrian record for a specific rock sequence to be considered ophiolitic. Once these tectonic fragments are recognized as remnants of ancient oceanic lithosphere, great progress shall be made in understanding early Earth history. We discuss the significance and implications of the Precambrian ophiolite record to constrain the mode and nature of the plate tectonics that operated in deep time. | Timothy M. KUSKY WANG Lu Yildirim DILEK Paul ROBINSON PENG SongBai HUANG XuYa | 2011 | Science China Earth Sciences2011,54,3: | 4 |
| 8 | Diamond and Recycled Mantle:A New Perspective——Introduction of IGCP 649 Project显示文摘The IGCP 649 project entitled 'Diamonds and Recycled Mantle'was approved by UNESCO and IUGS in March 2015.This project is led by an international team of researchers,including Prof.Yang Jingsui of Institute of Geology of CAGS(China),Prof.Yildirim Dilek of | YANG Jingsui Yildirim DILEK Paul T.ROBINSON | 2015 | Acta Geologica Sinica(English Edition)2015,89,3: | 2 |
| 9 | Petrological and Re-Os Isotopic Constraints on the Origin and Tectonic Setting of the Cuobuzha Peridotite, Yarlung Zangbo Suture Zone, SW Tibet, China显示文摘The Yarlung Zangbo Suture Zone(YZSZ)in southern Tibet includes the remnants of Neotethyan oceanic lithosphere and marks a major suture between the Indian Plate to the south and the Lhasa Terrane of Tibet to the north(Dupuis et al.,2005;Yang et al.,2011).In the western part of the YZSZ,the Northern and the Southern sub-belts form two sub-parallel zones of mafic–ultramaficrockassemblageswithoverlapping crystallization ages(Xiong et al.,2011;Hebért et al.,2012;Liu et al.,2015).The upper mantle section of the Cuobuzha ophiolite in the northern sub-belt of the Yarlung–Zangbo Suture Zone(YZSZ)in SW Tibet comprises mainly clinopyroxene(cpx)–rich and depleted harzburgites.Spinels in the cpx-harzburgites show lower Cr#values(12.6–15.1)than the spinels in the harzburgites(26.1–34.5),and the cpx-harzburgites display higher heavy rare earth element concentrations than the depleted harzburgites.The harzburgites have subchondritic Os isotopic compositions(0.11624–0.11699),whereas the cpx-harzburgites have suprachondritic 187Os/188Os ratios(0.12831–0.13125)with higher Re concentrations(0.380-0.575 ppb).The cpx-harzburgites plot in a Re vs.Al2O3 diagram as a result of subsequent addition of Re following the last partial melting event that occurred during mid-ocean ridge melt evolution processes(Uysal et al.,2015).Although these geochemical and isotopic signatures suggest that both peridotite types in the ophiolite represent mid-ocean ridge type upper mantle units,their melt evolution trends reflect different mantle processes.The cpx-harzburgites formed from low-degree partial melting(~5%)of a primitive mantle source,and they weresubsequently modified by melt–rock interactions in a mid-ocean ridge environment.The depleted harzburgites,on the other hand,were produced by re-melting of the cpx-harzburgites,which later interacted with MORB-or island arc tholeiite(IAT)-like melts(Fig.1)possibly in a trench-distal backarc spreading center.Our new isotopic and geochemical data from the Cuobuzha peridotites confirm that the Neotethyan upper mantle had highly heterogeneous Os isotopic compositions as a result of multiple melt production and melt extraction events during its seafloor spreading evolution. | FENG Guangying YANG Jingsui Yildirim DILEK LIU Fei XIONG Fahui | 2017 | Acta Geologica Sinica(English Edition)2017,91,S1: | 2 |
| 10 | Petrological and Os Isotopic Characteristics of Zedong Peridotites in the Eastern Yarlung–Zangbo Suture in Tibet显示文摘The Zedong ophiolites in the eastern Yarlung–Zangbo suture zone of Tibet represent a mantle slice of more than 45 km^2. This massif consists mainly of mantle peridotites, with lesser gabbros, diabases and volcanic rocks. The mantle peridotites are mostly harzburgite, lherzolite; a few dike-like bodies of dunite are also present. Mineral structures show that the peridotites experienced plastic deformation and partial melting. Olivine(Fo89.7–91.2), orthopyroxene(En_(88–92)), clinopyroxene(En_(45–49) Wo_(47–51) Fs_(2–4)) and spinel [Mg~#=100×Mg/(Mg+Fe)]=49.1–70.7; Cr~#=(100×Cr/(Cr+Al)=18.8–76.5] are the major minerals. The degree of partial melting of mantle peridotites is 10%–40%, indicating that the Zedong mantle peridotites may experience a multi–stage process. The peridotites are characterized by depleted major element compositions and low REE content(0.08–0.62 ppm). Their 'spoon–shaped' primitive–mantle normalized REE patterns with(La/Sm)_N being 0.50–6.00 indicate that the Zedong ultramafic rocks belong to depleted residual mantle rocks. The PGE content of Zedong peridotites(18.19–50.74 ppb) is similar with primary mantle with Pd/Ir being 0.54–0.60 and Pt/Pd being 1.09–1.66. The Zedong peridotites have variable, unradiogenic Os isotopic compositions with ^(187)Os/^(188)Os=0.1228 to 0.1282. A corollary to this interpretation is that the convecting upper mantle is heterogeneous in Os isotopes. All data of the Zedong peridotites suggest that they formed originally at a mid-ocean ridge(MOR) and were later modified in supra–subduction zone(SSZ) environment. | LAI Shengmin YANG Jingsui Yildirim DILEK XIONG Fahui JIANG Rui CHEN Yanhong | 2018 | Acta Geologica Sinica(English Edition)2018,92,2: | 2 |
| 11 | Prognostic Significance of Perineural Invasion in Patients with Gastric Cancer Who Underwent Curative Resection显示文摘 | Ahmet Bilici MD Mesut Seker MD Bala Basak Oven Ustaalioglu MD Umut Kefeli MD Emre Yildirim MD Dilek Yavuzer MD Fatih Muhammed Aydin MD Taflan Salepci MD Mustafa Oncel MD FASCRS(Int) Mahmut Gumus MD | 2010 | Annals of Surgical Oncology2010,,8: | 1 |
| 12 | Mobbing in the workplace by peers and managers:mobbing experienced by nurses working in healthcare facilities in Turkey and its effect on nurse显示文摘 | Aytolan Yildirim Dilek Yildirim | 2007 | Journal of Clinical nursing2007,16,8: | 1 |
| 13 | Geochronology and geochemistry of basaltic lavas in the Dongbo and Purang ophiolites of the Yarlung- Zangbo Suture zone: Plume- influenced continental margin-type oceanic lithosphere in southern Tibet显示文摘 | Lin Fei Yang Jingsui Yildirim Dilek | 2015 | Gondwana research2015,27,02: | 1 |
| 14 | Leukoencephalopathy with brain stem and spinal cord involvement and high lactate: A genetically proven case with distinct MRI findings显示文摘 | Kayihan Uluc Ozdil Baskan Kadriye Agan Yildirim Selda Ozsahin Mesrure Koseoglu Baris Isak G.C. Scheper Dilek Ince Gunal M.S. van der Knaap | 2008 | Journal of the Neurological Sciences2008,,: | 1 |
| 15 | Prognostic Significance of Perineural Invasion in Patients with Gastric Cancer Who Underwent Curative Resection显示文摘 | Ahmet Bilici Mesut Seker Bala Basak Oven Ustaalioglu Umut Kefeli Emre Yildirim Dilek Yavuzer Fatih Muhammed Aydin Taflan Salepci Mustafa Oncel Mahmut Gumus | 2010 | Annals of Surgical Oncology2010,,8: | 1 |
| 16 | Endometrial thickness and histopathologic findings in women with postmenopausal bleeding显示文摘 | Yildirim M Oktem M Dilek T | 2003 | Int J Gynaecol Obstet2003,80,3: | 1 |
| 17 | Kalaymyo Peridotite Massif in the Indo-Myanmar Ranges(Western Myanmar): Its Mineralogy and Petrology显示文摘Mesozoic ophiolites crop out discontinuously in the Indo-Myanmar Ranges in NE India and Myanmar,and represent the remnants of the Neotethyan oceanic lithosphere(Sengupta et al.,1990;Mitchell,1993).These ophiolites in the Indo-Myanmar Ranges are the southern continuation of the Neotethyan ophiolites occurring along the Yarlung Zangbo Suture Zone(YZSZ)in southern Tibet farther northwest(Mitchell,1993;Fareeduddin and Dilek,2015),as indicated by their coeval crystallization ages and geochemical compositions(Yang et al.,2012;Liu et al.,2016).The Kalaymyo ophiolite is located in the central part of the eastern Indo-Myanmar Ranges(Fig.1).composition of these ophiolites from the central Tibetan Plateau(CTP)is dominated by MORBs and minor OIBs and a distinct lack of IATs and BONs,which is inconsistent with most ophiolites worldwide(Robinson and Zhou,2008;Zhang et al.,2008).But the generation and tectonic nature of these ophiolites are still controversial.*The Kalaymyo peridotites consist mainly of harzburgites,which show typical porphyroclastic or coarse-grained equigranular textures.They are composed ofolivine(Fo=89.8–90.5),orthopyroxene(En86-91Wo1-4Fs8-10;Mg#=89.6–91.9),clinopyroxene(En46-49Wo47-50Fs3-5;Mg#=90.9–93.6)and spinel(Mg#=67.1–78.9;Cr#=13.5–31.5),and have relatively homogeneous whole-rock compositions with Mg#s of90.1–90.8 and Si O2(41.5–43.65 wt.%),Al2O3(1.66–2.66wt.%)and Ca O(1.45–2.67 wt.%)contents.TheydisplayLightRareEarthElement(LREE)-depleted chondrite-normalized REE patterns with(La/Yb)CN=0.04–0.21 and(Gd/Yb)CN=0.40–0.84,and show a slight enrichment from Pr to La with(La/Pr)CN in the range of 0.98–2.36.The Kalaymyo peridotites are characterized by Pd-enriched chondrite-normalized PGE patterns with superchondritic(Pd/Ir)CN ratios(1.15–2.36).Their calculated oxygen fugacities range between QFM–0.57 and QFM+0.90.These mineralogical and geochemical features collectively suggest that the Kalaymyo peridotites represent residual upper mantle rocks after low to moderate degrees(5–15%)of partial melting at a mid-ocean-ridge(MOR)environment.The observed enrichment in LREE and Pd was a result of their reactions with enriched MORB-like melts,percolating through these already depleted,residual peridotites.The Kalaymyo and other ophiolites in the Indo-Myanmar Ranges hence represent mid-ocean ridge(MOR)–type Tethyan oceanic lithosphere derived from a downgoing plate and accreted into a westward migrating subduction–accretion system along the eastern margin of India. | NIU Xiaolu LIU Fei YANG Jingsui Yildirim DILEK XU Zhiqin FENG Guangying XIONG Fahui Kyaing SEIN | 2017 | Acta Geologica Sinica(English Edition)2017,91,S1: | 1 |
| 18 | Hepatic vein Doppler waveform in patients with diffuse fatty infiltration of the liver显示文摘 | Levent Oguzkurt Tulin Yildirim Dilek Torun Fahri Tercan Osman Kizilkilic E. Alp Niron | 2004 | European Journal of Radiology2004,,2: | 1 |
| 19 | Endometrial thickness and histopathologic findings in women with postmenopausal bleeding显示文摘 | Yildirim M Oktem M Dilek T | 2003 | Int J Gynaecol Obstet2003,80,3: | 1 |
| 20 | The origin and pre-Cenozoic evolution of the Tibetan Plateau显示文摘 | Di-Cheng Zhu Zhi-Dan Zhao Yaoling Niu Yildirim Dilek Zeng-Qian Hou Xuan-Xue Mo | 2012 | Gondwana Research2012,,: | 1 |