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| 1 | 黑龙江杂岩的碎屑锆石年代及其大地构造意义显示文摘黑龙江杂岩带位于佳木斯地体西缘,为佳木斯地体向西与松嫩地体之间俯冲、拼贴、碰撞而形成的高压变质带。黑龙江杂岩沿牡丹江断裂分布,其构造-岩石组合、变质变形特征等显示其为佳木斯地体向松嫩地体俯冲拼帖的过程中形成的增生杂岩,目前保存下来的杂岩带应为大规模增生楔仰冲到佳木斯地体之上的残余部分。88颗碎屑锆石的全部样品SHRIMPU-Pb年代学测试结果显示三个主要年龄区间:170~220Ma,峰值年龄为183Ma;240~338Ma,峰值年龄为256Ma;450~520Ma,峰值年龄为470Ma。而28个碎屑锆石谐和年龄的年龄谱为两组:240~338Ma,峰值年龄为256Ma;450~500Ma,峰值年龄为470Ma。碎屑锆石年龄数据分析得到,240~338Ma峰期年龄为256Ma的年龄应代表黑龙江杂岩主体岩石的沉积年龄上限;而450~500Ma的年龄谱对应于佳木斯地体的基底变质岩年龄,显示佳木斯地体的基底变质岩曾为黑龙江杂岩的物源区;而170~210Ma,峰期年龄为183Ma的不谐和年龄应为受印支期-早侏罗世构造热事件的扰动年龄,与该区变质单矿物的Ar-Ar年龄相一致,应代表了该区陆-陆碰撞的时代。上述年龄为黑龙江杂岩的形成与演化提供了重要的地质年代学制约,即黑龙江杂岩的原岩成岩时代上限为早三叠世,佳木斯地体向西的俯冲时代主体为印支期,而陆-陆拼贴及碰撞过程主要为晚印支期并可能持续到早侏罗世。这些结果将为揭示我国东北地区构造演化的年代学格架以及三叠纪古亚洲构造域向环太平洋构造域叠加和转换的动力学背景研究提供新的基本地质事实依据。 | 周建波 张兴洲 Simon A WILDE 郑常青 金魏 陈红 韩杰 | 2009 | 岩石学报2009,25,8: | 55 |
| 2 | Tectonic evolution of the Western Kunlun orogenic belt in northern Qinghai-Tibet Plateau:Evidence from zircon SHRIMP and LA-ICP-MS U-Pb geochronology显示文摘The Western Kunlun Range in northern Qinghai-Tibet Plateau is composed of the North Kunlun Terrane,the South Kunlun Terrane and the Karakorum-Tianshuihai Terrane. Here we report zircon SHRIMP and LA-ICP-MS U-Pb ages of some metamorphic and igneous rocks and field observations in order to pro-vide a better understanding of their Precambrian and Palaeozoic-early Mesozoic tectonic evolution. Based on these data we draw the following conclusions: (1) The paragneisses in the North Kunlun Terrane are likely of late Mesoproterozoic age rather than Palaeoproterozoic age as previously thought,representing tectonothermal episodes at 1.0―0.9 Ga and ~0.8 Ga. (2) The North Kunlun Terrane was an orogenic belt accreted to the southern margin of Tarim during late Mesoproterozoic to early Neopro-terozoic,the two episodes of metamorphisms correspond to the assemblage and breakup of Rodinia respectively. (3) The Bulunkuole Group in western South Kunlun Terrane,which was considered to be the Palaeoproterozoic basement of the South Kunlun Terrane by previous studies,is now subdivided into the late Neoproterzoic to early Palaeozoic paragneisses (khondalite) and the early Mesozoic metamorphic volcano-sedimentary series; the paragneisses were thrust onto the metamorphic vol-cano-sedimentary series from south to north,with two main teconothermal episodes (i.e.,Caledonian,460―400 Ma,and Hercynian-Indosinian,340―200 Ma),and have been documented by zircon U-Pb ages. (4) In the eastern part of the South Kunlun Terrane,a gneissic granodiorite pluton,which intruded the khondalite,was crystallized at ca. 505 Ma and metamorphosed at ca. 240 Ma. In combination with geochronology data of the paragneiss,we suggest that the South Kunlun Terrane was a Caledonian accretionary orogenic belt and overprinted by late Paleozoic to early Mesozoic arc magmatism. | ZHANG ChuanLin LU SongNian YU HaiFeng YE HaiMin | 2007 | Science China Earth Sciences2007,50,6: | 45 |
| 3 | Ar-Ar geochronology of Late Mesozoic volcanic rocks from the Yanji area, NE China and tectonic implications显示文摘Ar-Ar dating results of late Mesozoic-Cenozoic volcanic rocks from the Yanji area, NE China provide a new volcano-sedimentary stratigraphic framework. The previously defined “Triassic-Jurassic” volcanic rocks (including those from Sanxianling, Tuntianying, Tianqiaoling and Jingouling Fms.) were erupted during 118―106 Ma, corresponding to Early Cretaceous. The new eruption age span is slightly younger than the main stage (130―120 Ma) of the extensive magmatism in the eastern Central Asian Orogenic Belt and its adjacent regions. Subduction-related adakites occurring in the previously defined Quanshuicun Fm. were extruded at ca. 55 Ma. Based on these new Ar-Ar ages, the late Mesozoic to Palaeocene volcano-sedimentary sequences is rebuilt as: Tuopangou Fm., Sanxianling/Tuntianying Fm. (118―115 Ma), Malugou/Tianqiaoling Fm. (K1), Huoshanyan/Jingouling Fm. (108―106 Ma), Changcai Fm. (K2), Quanshuicun Fm. (~55 Ma) and Dalazi Fm. Our results suggest that subduction of the Pa- laeo-Pacific Ocean beneath the East Asian continental margin occurred during 106 to 55 Ma, consistent with the paleomagnetic observations and magmatic records which indicated that the Izanagi-Farallon ridge subduction beneath the southwestern Japan took place during 95―65 Ma. | LI ChaoWen GUO Feng FAN WeiMing GAO XiaoFeng | 2007 | Science China Earth Sciences2007,50,4: | 15 |
| 4 | 南方水稻复种指数变化对国家粮食产能的影响及其政策启示(英文)显示文摘Changes in rice production in Southern China are crucial to national food security.This study employed Landsat images to map the distributions of paddy rice-cropping systems in Southern China in 1990 and 2015.The impact of rice multiple cropping index changes on grain production capacity was then evaluated.Three important results were obtained for the 1990 to 2015 study period.First,the multiple cropping index for rice decreased from 148.3% to 129.3%,and 253.16×10^4 ha of land area was converted from double-cropping to single- cropping rice,termed “double to single”.The area with the most dramatic changes is in the Middle-Lower Yangtze Plain.The rice-cropping system distribution in Southern China showed a change from north to south with double-cropping rice shrinking and single-cropping rice expanding.Second,the “double to single” conversion led to a reduction of 6.1% and 2.6% in rice and grain production,respectively.Hunan and Jiangxi Provinces,located in the main rice producing areas,and Zhejiang,which has shown better economic development,exhibited large reductions in rice production due to the “double to single” conversion,all exceeding 13%.Third,the grain production capacity of converted “double to single” paddy fields is equivalent to that of 223.3 × 10^4 ha of newly reclaimed cultivated land,which is 54% of the total newly cultivated land reclaimed through the 2001–2015 land consolidation project.It is also 1.7 times the target goal for newly cultivated land in the national land consolidation plan for 2016–2020.Making full use of the converted “double to single” paddy fields can save 167.44 billion yuan in newly reclaimed cultivated land costs.Therefore,instead of pursuing low-quality new arable land,it is better to make full use of the existing high-quality arable land.Based on these results,the government should change the assessment method for cultivated land balance,and incorporate the sown area increased by improving the multiple cropping index into the cultivated land compensation indicator. | 蒋敏 李秀彬 辛良杰 谈明洪 | 2019 | Journal of Geographical Sciences2019,29,11: | 14 |
| 5 | 南海盆海山火山碎屑岩的发现及其地质意义显示文摘海山火山碎屑岩是水下爆发性火山作用的产物。南海盆两座海山上发现火山碎屑岩表明海山顶部曾经一度高于PCL(压力补偿深度)。岩相学特征显示这些火山碎屑岩的胶结物主要为一混合相,包括粘土矿物和黑色铁质矿物等,这从一个侧面反映海山的正地形限制了粗粒外生碎屑到达海山顶部。岩石的单矿物组分、主量元素化学特征与同海山玄武质熔岩具有可比性,属碱性岩浆系列。计算获得海山平均最小下沉速率为0.06mm/年,最大可能达0.30mm/年。海山岩石的机械风化产物对周围海盆的沉积作用作出重要贡献。 | 鄢全树 石学法 | 2009 | 岩石学报2009,25,12: | 11 |
| 6 | 2.7 Ga Monzogranite on the Songnen Massif and Its Geological Implications显示文摘The formation and evolution of Songnen massif hasalways been a hot topic, and the presence of Precambrianbasement on the Songnen massif is still controversial: (1)Lacking of Pre-Paleozoic dating results, the Precambrianbasement on Songnen massif does not extend largelyaccording to the isotopic dating results of core frombasement, (2) the existence of gneiss from deep drill holesof the Songliao Basin makes some researchers considerthat Precambrian basement should exist on the Songnenmassif and another proof is that the geophysical featuresof gravity. | WU Xinwei ZHANG Chao ZHANG Yujin GUO Wei ZHANG Chao CUI Tianri YANG Yajun HU Jianfei SONG Wanbing | 2018 | Acta Geologica Sinica(English Edition)2018,92,3: | 8 |
| 7 | Characteristics of phytoliths in Leymus chinensis from different habitats on the Songnen Plain in Northeast China and their environmental implications显示文摘The characteristics of phytoliths in Leymus chinensis leaves from five different pH-value habitats from Songnen Plain in China were analyzed to reveal their environmental implications and possible use for quantitative reconstruction of the paleoenvironment. The phytoliths in leaves of L. chinensis from the five habitats showed a non-linear correlation with soil pH. The main types of phytoliths from the different habitats were exactly the same, including silicified stomata, hat-shaped, lanceolate, elongated, multilateral-plate, and tooth-shaped. However, there were significant differences in the contents of each shape of phytoliths among the five habitats. The amount and the volume of weakly tooth-shaped, lanceolate phytoliths and silicified stomata increased with increased pH, while the total amount of phytoliths was reduced. In addition, there were different types of phytoliths in the L. chinensis leaves from the five habitats of different pH, suggesting that the types of phytoliths were controlled, at least in part, by soil pH. The changes of size and percentage of phytoliths were most remarkable at pH 10.15–10.18, indicating that this is the highest pH value that L. chinensis can tolerate. | JIE DongMei LIU ZhaoYang SHI LianXuan LIU HongMei GE Yong | 2010 | Science China Earth Sciences2010,53,7: | 6 |
| 8 | New Discovery of Molybdenite in the Dongping Gold Deposit, Hebei Province, China and its Re-Os Geochronological Implications显示文摘The Dongping gold deposit is located on the northern margin of the North China Craton,and is the largest alkaline pluton-related gold deposit in China(Bao et al.,2014),which is characterized by its large amounts of tellurides.The deposit is largely hosted in the Shuiquangou syenitic complex and consists of auriferous quartz veins and disseminated sulfide ores.It has been extensively studied since its discovery in the 1980s;however the geochronology and genesis of the deposit are still controversial.Nie(1998)considered that the deposit was formed in the Devonian. | WANG Dazhao LIU Jiajun ZHAI Degao ZHEN Shimin WANG Jiang YANG Xi'an | 2019 | Acta Geologica Sinica(English Edition)2019,93,3: | 5 |
| 9 | Petrogenesis and Tectonic Implications of the Paiku Leucogranites,Northern Himalaya显示文摘The Himalayan leucogranites provide insights into the partial melting behavior of relatively deeper crustal rocks and tectono-magmatic history of the Himalayan Orogen. The Paiku leucogranites of northern Himalaya can be subdivided into two-mica leucogranite(TML), garnet-bearing leucogranite(GL), cordierite-bearing leucogranite(CL), and tourmaline-bearing leucogranite(TL). All of them are high-K, peraluminous, calc-alkalic to alkali-calcic rocks. They are enriched in light rare earth elements(LREE) and large ion lithophile elements(LILE), and show pronounced negative anomalies of Sr, Ba, K and Ti, but positive anomalies of Nb and Rb. LA-ICP-MS U-Pb zircon dating of one TML, one GL, and two CL samples yielded variable 206Pb/238U ages ranging from 23.6 to 16.1 Ma, indicating the Paiku leucogranites underwent a low degree of partial melting process. Combining with previous studies, we suggest the Paiku leucogranites were derived from partial melting of metasedimentary rocks of the Higher Himalayan Sequence(HHS). The GL and TL mainly resulted from the muscovite-dehydration melting, whereas the TML and CL were mainly derived from the biotite-dehydration melting. Finally, it is concluded that the Paiku leucogranites were probably formed during the subduction of the Indian crust. | Zhengbin Gou Xin Dong Baodi Wang | 2019 | Journal of Earth Science2019,30,3: | 3 |
| 10 | Extra-skeletal manifestations in mice affected by Clcn7-dependent autosomal dominant osteopetrosis type 2 clinical and therapeutic implications显示文摘Autosomal dominant osteopetrosis type 2 (ADO2) is a high-density brittle bone disease characterized by bone pain,multiple fractures and skeletal-related events,including nerve compression syndrome and hematological failure.We demonstrated that in mice carrying the heterozygous Clcn7^G213R mutation,whose human mutant homolog CLCN7^G215R affects patients,the clinical impacts of ADO2 extend beyond the skeleton,affecting several other organs.The hallmark of the extra-skeletal alterations is a consistent perivascular fibrosis,associated with high numbers of macrophages and lymphoid infiltrates.Fragmented clinical information in a small cohort of patients confirms extra-skeletal alterations consistent with a systemic disease,in line with the observation that the CLCN7 gene is expressed in many organs.ADO2 mice also show anxiety and depression and their brains exhibit not only perivascular fibrosis but also β-amyloid accumulation and astrogliosis,suggesting the involvement of the nervous system in the pathogenesis of the ADO2 extra-skeletal alterations.Extra-skeletal organs share a similar cellular pathology,confirmed also in vitro in bone marrow mononuclear cells and osteoclasts,characterized by an impairment of the exit pathway of the Clcn7 protein product,ClC7,through the Golgi,with consequent reduced ClC7 expression in late endosomes and lysosomes,associated with high vesicular pH and accumulation of autophagosome markers.Finally,an experimental siRNA therapy,previously proven to counteract the bone phenotype,also improves the extra-skeletal alterations.These results could have important clinical implications,supporting the notion that a systematic evaluation of ADO2 patients for extra-skeletal symptoms could help improve their diagnosis,clinical management,and therapeutic options. | Antonio Maurizi Mattia Capulli Annabel Curle Rajvi Patel Argia Ucci Juliana Alves Cotes Harriet Oxford Shireen R. Lamandé John F. Bateman Nadia Rucci Anna Teti | 2019 | Bone Research2019,7,2: | 3 |
| 11 | Tectonic Implications and Petrogenesis of the Various Types of Magmatic Rocks from the Zedang Area in Southern Tibet显示文摘In this study,we report systematically field observations,geochronology,whole-rock geochemistry and Sr-Nd-Hf isotopic dataset on the various types of magmatic rocks collected from the Zedang area.Chemically,the diabase and gabbro have a low-K calc-alkaline affinity,whereas the basalt and plagiogranite have medium to high-K calc-alkaline characteristics.In addition,the basalts are highly enriched in light rare earth elements(LREE)and large ion lithophile elements(LILE),but strongly depleted in high strength field elements(HFSE),indicating that their magma source probably was derived from a subduction-or arc-related setting.In contrast,both the gabbro and diabase mainly demonstrate an N-MORB-like affinity consistent with normal mid-oceanic ridge basalt(N-MORB)origin.The zircon U-Pb dating results suggest that the basalts were crystallized earlier at ca.158–161 Ma(Oxfordian stage),but the gabbro was crystallized at ca.131 Ma(Hauterivian stage of Early Cretaceous).The zircon U-Pb dating results correspond with the field observations that the veins of gabbro intruded basalt.Furthermore,the plagiogranite has a weighted mean age of ca.160 Ma(MSWD=2.1)consistent with the basalt within the uncertainty.The basalt and the plagiogranite have significantly positiveεHf(t)values(+5.8 to+15.6 and+8.6 to+16.1,respectively),suggesting that they were originated from partial melting of a depleted source.However,basalt and plagiogranite are characterized by the wide variations ofεHf(t)values indicating minor amounts of exotic crustal material input during the later magma evolution.Additionally,the basalt shows duplex geochemical features of island-arc and mid-oceanic ridge basalt,corresponding to the supra-subduction zone-(SSZ)type affinity.To sum up,two distinct magmatic events identified in this study probably suggest an intra-oceanic arc system existing in the Zedang area during the Late Jurassic,but the intra-oceanic arc subduction extinguished in the Early Cretaceous as suggested by the N-MORB-like gabbro and diabase.Integrated with regional background and different rock types,as well as geochemical features,we conclude that intra-oceanic arc subduction setting developed during the Late Jurassic in the Zedang area,southern Tibet. | Yuanku Mengc Fahui Xiong Jingsui Yang Zhao Liu Kieran AIles Paul TRobinson Xiangzhen Xu | 2019 | Journal of Earth Science2019,30,6: | 2 |
| 12 | Tackling China's Noncommunicable Diseases: Shared Origins, Costly Consequences and the Need for Actior显示文摘Noncommunicable diseases (NCDs) have become the leading causes of death worldwide. As a concerning example, China's NCD prevalence is accelerating. As elsewhere, hypertension, diabetes, heart diseases, stroke, and obesity are the major contributors to this increasing trend. A common set of preceding risk factors is responsible for these different conditions, including physical inactivity, unhealthy eating habits, altered patterns of sleep, environmental pollution, and tobacco and alcohol abuse. | Yan Min Li-Xin Jiang Li-Jing L Yan Lin-Hong Wang Sanjay Basu Yang-Feng Wu Randall S Stafford | 2015 | Chinese Medical Journal2015,,6: | 2 |
| 13 | Implications and Recommendations for Rural Revitalization Strategy Based on Domestic and Foreign Experience显示文摘The 19th National Congress of the Communist Party of China formulated a major deployment of the rural revitalization strategy from the overall situation of the national cause,and took the rural revitalization strategy as the general gripper of the work of ' agriculture,farmers and rural areas'. This has important practical significance for realizing agricultural modernization. Through selecting several typical countries,this paper analyzes and introduces the historical experience of rural revitalization. Finally,it comes up with some recommendations and implications. | Ning WANG | 2018 | Asian Agricultural Research2018,10,12: | 1 |
| 14 | Examining El Nio in the Holocene: implications and challenges显示文摘The El Nino–Southern Oscillation(ENSO) is characterized by year-to-year anomalous surface climate variability over the tropical Pacific. Through atmospheric teleconnections. | Zhengyao Lu Zhengyu Liu | 2018 | National Science Review2018,5,6: | 1 |
| 15 | A Study of the Participation in TESOL Class——非母语英语教学课堂参与度调查与分析(英文)显示文摘The reasons for various types of participation and the main influence on enhancing active class participation are continuously debated.By investigating the performance of TESOL students,practical advices would be given in this essay. | 赵晨 | 2013 | 海外英语2013,,13: | 1 |
| 16 | Ecological and Biogeographic Implications of Asian Cenozoic Fossil Floras显示文摘This collection of articles highlights current paleobotanical research on the Paleogene and Neogene of Asia, following on a symposium held at the In ternational Botanical Congress in Shenzhen, China in 2017,'Ecological and biogeographic implications of Asian Oligocene and Neogene fossil floras.' | Xiaoyan Liu Steven R. Manchester | 2019 | Journal of Systematics and Evolution2019,57,2: | 1 |
| 17 | Cohesion Theory and Its Implications for English Reading Teaching显示文摘Abstrct: According to College English Curriculum Requirements(2007), reading is the main training aim of our college English teaching. And for the college graduates, reading is the main way through which they obtain information needed in their specialty.Most often, students think their problem in reading is vocabulary, which is not necessarily true. Sometimes even the readers look up all the new words, it is still hard for them to understand the text exactly and thoroughly. Though vocabulary plays an important role in reading comprehension, it may not be the biggest hindrance on our way of correct comprehending. English reading teaching shouldn't be confined to the teaching of vocabulary or sentences but should develop students' ability to analyze text beyond sentence level. It's impossible to cover all the aspects of discourse analysis in one article and since cohesion is important and basic knowledge of discourse analysis, we will concentrate on the cohesive functions of discourse in English reading in this article. | 杜卫卫 | 2015 | 海外英语2015,,2: | 1 |
| 18 | The Implications of Cohesion Theory in College English Reading Teaching显示文摘The relationship of textual theory to ESL reading has for a long time been a heated research area.The various findings in this field have greatly facilitated the improvement of reading ability and the advancement of reading course.This thesis puts the use of textual device in a new light on the basic of the theory of cohesion,further at a micro level,explores the pedagogical implications for college English reading teaching. | 赵云丽 张增虎 | 2018 | 海外英语2018,,17: | 1 |
| 19 | 北祁连山高压变质带的变形和变质特征及其对俯冲带折返的意义显示文摘北祁连造山带是早古生代大洋板块'冷'俯冲的典型地区,形成了一系列高压低温变质的岩石组合。基性榴辉岩是俯冲洋壳变质的产物,根据其结构构造特征可以划分为(1)粒状榴辉岩,峰期变质矿物组合为Grt+Omp+Phn+Rut±Lws,硬柱石呈包裹体和假象分布于石榴石内,变质温压条件T=465~508℃,p=2.30~2.60GPa。(2)片状榴辉岩,岩石具片状构造,其共生矿物组合Omp+Czo/Ep+Phn+Gln构成透入性面理S_1和线理L_1,以及宏观和显微同斜褶皱F_1。其峰期变质温压条件为T=466~510℃,P=1.9~2.2GPa。(3)蓝片岩相退化变质榴辉岩,蓝片岩相变质矿物Gln+Ep+Phn±Ab强烈交代榴辉岩相矿物,并发生强烈D_2期变形作用,岩石形成明显的透入性面理S_2和线理L_2,以及同斜剪切褶皱F_2。蓝闪石和多硅白云母线理的统计揭示D_2期变形以斜向走滑剪切为主,与D_1期变形的榴辉岩的运动学特征大体相似。D_2同变质的温压条件为T=422~487℃,P=1.15~1.37GPa。高压变质带晚期的绿片岩相叠加和D_3期变形,形成透入性面理S_3和线理L_3,其运动特征为近于垂直构造线的逆冲剪切。结合榴辉岩变形特征,变质温压条件和同位素年代学资料,我们认为退变质的强弱与变形程度有密切关系。峰期变质后的榴辉岩经过早期绿帘石榴辉岩相到蓝片岩相斜向走滑剪切,和晚期绿片岩相逆冲,在泥盆纪早期快速折返的出露地表。 | 曹毅 宋述光 CA0 | 2009 | 岩石学报2009,25,9: | 1 |
| 20 | Zircon U-Pb Ages of the Chagangnuer Mafic Intrusion in Central Inner Mongolia and their Tectonic Implications显示文摘The Central Asian Orogenic Belt(CAOB)is regarded as the world's largest and long-lived Phanerozoic accretionary orogen,which has recorded a long history of multiple subduction-accretion events during the Neoproterozoic to Mesozoic.The CAOB was formed by the progressive subduction of the Paleo-Asian Ocean(PAO).However,the final closure time of the PAO is still controversial,ranging from the Late Devonian to the Early-Middle Triassic(Zhang et al.,2018). | ZHANG Xiangxin GAO Yongfeng LEI Shihe | 2019 | Acta Geologica Sinica(English Edition)2019,93,3: | 1 |