检索结果-南通市图书馆

A Possible long-tailed Bird with a Pygostyle from the late Mesozoic Yixian Formation, Western liaoning, China

Acta Geologica Sinica(English Edition) 2005年第1期79卷 7-10页

作者： l junchang1 and hou lianhai2.1 institute of geology, chinese academy of geological sciences, beijing 100037 2 institute of Vertebrate Paleontology and Paleoanthropology, chinese academy of sciences, beijing 100044 Department of Biology, Capital Normal University, beijing 100037 chinese Acad Geol Sci Inst Geol Beijing 100037 Peoples R China chinese Acad Sci Inst Vertebrate Paleontol & Paleoanthropol Beijing 100044 Peoples R China Capital Normal Univ Dept Biol Beijing 100037 Peoples R China

An incomplete caudal vertebral series (IVPP V11309) from the Yixian Formation of late Mesozoic, Jianshangou area of Beipiao, western liaoning Province, may represent a new bird. The tail is composed of at least 12 free caudal vertebrae and the most distal 5 caudal vertebrae co-ossified into a pygostyle. The pygostyle is plate-like and slightly curved dorsally. The anterior free caudals are amphiplatyan. The anterior caudal surfaces of the last three free caudals are concave, but their posterior articular surfaces are convex. The pygostyle is regarded as the first appeared flight apparatus during the evolutionary process from Archaeopteryx to neornithes. The pygostyle appeared in most early fossil birds and almost all the modern birds. Although their morphologies are different, they are basically formed by at least four last caudal vertebrae. The specimen V11309 is regarded as a bird rather than a non-avian theropod dinosaur based on the following characters: short caudal vertebrae, numerous pits present on the surfaces of the centra and, a foramen present between the basal part of the fused neural spines, which is similar to that of Struthio camelus. The discoveries of pygostyles from the therizinosauroids and oviraptorosaurs may provide strong evidence for supporting the origin of birds from small theropod dinosaurs. The structure of the pygostyle in specimen V11309 is different from those of Beipiaosaurus (Therizinosauroid) and Nomingia (oviraptorosaur). The most parsimonious interpretation is that these pygostyle-like structures are independently acquired by Beipiaosaurus and Nomingia during their evolutionary process.

关键词： western liaoning Yixian Formation late Mesozoic pygostyle

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Underplating in the middle-lower Yangtze Valley and model of geodynamic evolution:Constraints from geophysical data

引用

Science China Earth sciences 2005年第7期48卷 985-999页

作者： lü Qingtian, hou Zengqian, YANG Zhusen & SHI Danian institute of Mineral Resources,chinese academy of geological sciences,beijing 100037,China institute of Mineral Resources Chinese Academy of Geoloqical Sciences Beijina 100037 China

The lower crust and Moho are the most active boundary layers in the process of continental evolution, in which marks left by tectonic and magmatic activities during the process are preserved. The evolutionary process of the continental lithosphere may be reconstructed by exploring the structures of the lower crust and Moho. According to a study of the deep seismic reflection data obtained from the middle-lower Yangtze Valley, the authors find bright layered reflections ubiquitous in the lower crust and think that the bright reflections are caused by un-derplating of basic or ultrabasic magmas, which might be related to delamination of the lithosphere. On the basis of an integrated analysis of the geophysical and geological data of the region, the authors propose a model for geodynamic evolution of the middle-lower Yangtze Valley. This model suggests that the middle-lower Yangtze Valley had undergone such geodynamic processes as collision-compression, delamination-extension and underplating-melting since the end of the Permian, finally forming the gigantic middle-lower Yangtze Valley metallogenic belt.

关键词： lower crust deep seismic reflection underplating tectonic evolution.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

liaoxiornis delicatus *** ***.,the smallest Mesozoic bird

引用

chinese Science Bulletin 1999年第9期44卷 834-838页

作者： hou lianhai and CHEN Peiji institute of Vertebrate Paleontology and Paleoanthropology, chinese academy of sciences , beijing 100044, China Nanjing institute of geology and Paleontology, chinese academy of sciences , China institute of Vertebra Paleontology und Paleoanthropology Chinese Academy of Sciences Beijing China Nanjing Instittue of Gology and Paleontology Chinese Academy of Sciences China

Recently, a very small and complete bird specimen was collected from the Confuciusornis-bearing Yixian Formation. This finding represents a new kind of Mesozoic bird, named liaoxiornis delicatus. It is characterized by a short skull with teeth, a long neck and a very small sternum with only posterior process; the humeral head is not internally curved, and the hindlimbs are longer than the forelimbs. liaoxiomis delicatus is not only much smaller than Confuciusornis, but also smaller than Cathayomis and other early Cretaceous birds. It is the smallest bird known from Mesozoic deposit. liaoxiornis provides new evidence indicating that the early adaptive radiation of birds is complicated.

关键词： Mesozoic early bird evolution of birds.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Re-Os age for molybdenite from the Gangdese porphyry copper belt on Tibetan plateau: Implication for geody- namic setting and duration of the Cu mineralization

引用

Science China Earth sciences 2004年第3期47卷 221-231页

作者： hou Zengqian1, QU Xiaoming1, WANG Shuxian2, DU Andao2, GAO Yongfeng3 & HUANG Wei4 1. institute of Mineral Resources, chinese academy of geological sciences, beijing 100037, China 2. National Center of Geoanalysis, chinese academy of geological sciences, beijing 100037, China 3. Shijiazhuang College of Economy, Shijiazhuang 056000, China 4. Xizang Bureau of geology and Mineral Resources, lhasa 850000, China institute of Mineral Resources Chinese Academy of Geological Sci. Beijing 100037 China National Center of Geoanalysis Chinese Academy of Geological Sci. Beijing 100037 China Shijiazhuang College of Economy Shijiazhuang 056000 China Xizang Bureau of Geol./Mineral Rsrc. Lhasa 850000 China

The Gangdese porphyry copper belt consists of one large and five middle-small deposits in addition to dozens of ore-bearing porphyry bodies. The belt trends 350 km long along the EW-striking Gangdese batholith, and locally occurs as a string of beads extending about 50 km within the SN-trending rifting zones (grabens) on the Tibetan plateau. Monzonitic granite- porphyry and quartz monzonitic porphyry, as dominant host rocks, are shoshonitic and potassic calc-alkaline. Available dating data indicate that the ages of the shallow-level emplacement for these porphyries vary from 10 Ma to 18 Ma, which are identical to that of associated potassic calc-alkaline volcanic rocks (10—15 Ma) and mafic dykes (13—18 Ma). The timing and duration of Cu mineralization events are constrained by Re-Os ages for molybdenites from three porphyry copper deposits in the Gangdese porphyry copper belt. Five molybdenite samples from the Nanmu deposit yielded an 187Re-187Os isochron with a highly pre-cise age of (14.76?.22) Ma; six molybdenites from the Chongjiang deposit gave an isochron age of (14.04?.16) Ma. Re-Os model ages for two molybdenite samples from lakang抏 deposit vary from 13.5 Ma to 13.6 Ma, which are basically identical to isochron ages mentioned above. All the thirteen samples from these three deposits yielded a linear array in the isochron diagram with a higher correlation coefficient of 0.99719 and an isochron age of (14.39?.22) Ma (1s error), suggesting an coeval event of the Cu mineralization and a shared source of ore materials for the Gangdese porphyry copper belt. Compared with the longer-lived felsic magmatic-hydrothermal system, the Cu mineralization is a relatively short event with duration of about 0.5 Ma, and usu-ally occurs in the later-stage of the complicate magmatic system. The emplacement age of the Gangdese porphyries indicates that they intruded after the rapid rising of the Gangdese Mountains at 21—23 Ma, and formed in a post-collision crustal ex-tension env

关键词： porphyry copper deposit, Re-Os age, Gangdese, Tibetan plateau.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Discovery of Cu-Zn,Cu-Sn intermetallic minerals and its significance for genesis of the Mianning-Dechang REE Metallogenic Belt,Sichuan Province,China

引用

Science China Earth sciences 2006年第6期49卷 597-603页

作者： XIE Yuling1, hou Zengqian2, XU Jiuhua1, YUAN Zhongxin2, BAI Ge2 & lI Xiaoyu3 1. Civil and Environmental Engineering School, University of Science and Technology beijing, beijing 100083, China 2. institute of geology, chinese academy of geological sciences, beijing 100037, China 3. The 109th geological Team, Sichuan Bureau of Mineral Exploration, Chengdu 610100, China Civil and Environmental Engineering School University of Science and Technology Beijing Beijing China institute of geology Chinese Academy of Geological Sciences Beijing China The 109th geological Team Sichuan Bureau of Mineral Exploration Chengdu China

Mianning-Dechang Himalayan REE Metallogenetic Belt in Sichuan Province lies along the western margin of the Yangtze Craton. We have conducted detailed mineralogical studies on ore minerals collected from Maoniuping and Dalucao, the two largest deposits in the belt. With optical microscope, SEM/EDS, and EPMA, three rare intermetallic minerals, i.e., zinccopperite (Cu2Zn), Sn- bearing native copper, and Cu-bearing jupiter were found to occur in the main ore along with barite, fluorite, apatite, sulfide and bastnaesite. Since the conditions under which zinccopperite and Sn- bearing native copper formed are quite unique, finding of these minerals, for the first time in domestic REE deposits, has significant implications for the genesis of the ore deposits in which they occur. In comparison with Cu-Zn intermetallic minerals in other occurrences, we propose that the formation of this REE metallogenetic belt is associated with fast upwelling of the Himalayan magma from deep source.

关键词： Mianning-Dechang REE metallogenetic belt, Cu-bearing intermetallic minerals, EPMA, genesis significance, deep source magmatic activity.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Gondwanian Palynoflora from the lower Permian Chubu Formation,Southern Tibet

引用

Continental Dynamics 1999年第2期 19-28页

作者： hou Jingpeng (institute of geology chinese academy of geological sciences, beijing, 100037)OUYANG Shu (Nanjing institute Of geology and Paleontology,Academia Sinica, Nanjing 210008)

A Gondwanian palynoflora has been firstly discovered from the Chubu Formation in southern Tibet. About 48 species referred to 28 genera of spores and pollen, including two new species, are recorded and illustrated. The assemblage is mainly composed of trilete spores (leiotriletes, Aniculatisporis) and bisaccate striate and nonstriate pollen (Faunipolleites, Protohaploxypinus, Sulcatisporites), and can roughly be correlated with those of the lower-middle Barakar Formation of Indian lower Gondwana. The Chubu Formation is considered to be late Early Permian (late Artinskian- Kungurian) in age.

关键词： palynoflora Gondwana Early Permian Chubu Formation southern Tibet

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

A carinate bird from the Upper Jurassic of western liaoning, China

引用

chinese Science Bulletin 1997年第5期42卷 413-417页

作者： hou lianhaiinstitute of Vertebrate Paleontology and Paleoanthropology, chinese academy of sciences, beijing 100044, China institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing China

AFTER the publication of the fossil bird Confuciusorins, additional skeletons of fossil birds have been found by hou lianhai, Hu Yaoming, Wang Ping, Gu Yucai and Sun Yutie in the Yixian Formation of Beipiao, liaoning Province. The new locality is about 3 km southwest of that of Confuciusorins. Among those specimens were two of Confuciusorins and two new birds. A well-developed carina was found on the smallest specimen, a feature not found in the Jurassic birds, such as Archaeopteryx and Confuciusorins. The new Jurassic fossil bird is described in the present note.

关键词： Beipiao of liaoning late Jurassic Aves carina.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Partition of Crustal Density Structure of chinese Continent

引用

Continental Dynamics 1996年第2期 94-102页

作者： Yang Wencai(institute of geology, chinese academy of geological sciences, beijing 100037, China)hou Zunze(institute of Geophysical & Geochemical Eeploration, langfang 102849, China)

ＰａｒｔｉｔｉｏｎｏｆＣｒｕｓｔａｌＤｅｎｓｉｔｙＳｔｒｕｃｔｕｒｅｏｆＣｈｉｎｅｓｅＣｏｎｔｉｎｅｎｔ￥ＹａｎｇＷｅｎｃａｉ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＧｅｏｌｏｇｉｃａ... 详细信息

ＰａｒｔｉｔｉｏｎｏｆＣｒｕｓｔａｌＤｅｎｓｉｔｙＳｔｒｕｃｔｕｒｅｏｆＣｈｉｎｅｓｅＣｏｎｔｉｎｅｎｔ￥ＹａｎｇＷｅｎｃａｉ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＧｅｏｌｏｇｉｃａｌＳｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ...

关键词： Crustal structure density structure partition multiscale analysis gravity fields chinese continent

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

INTRODUCTION TO MESOZOIC BIRDS FROM lIAONING,CHINA

引用

古脊椎动物学报(中英文） 1995年第4期 266-271页

作者： hou lianhai Zhou Zhonghe(institute of Vertebrate Paleontology and Paleoanthropology, chinese academy of sciences, beijing 100044)Gu Yucai(liaoning institute of Archaeology, Shenyang, liaoning 110003)Sun Yutie(Chaoyang institute of Cultural Relic Manageme

This paper summarizes the recent discoveries of Mesozoic birds from late Jurassic to Early Cretaceous in liaoning, China. Most of these fossils can be refered to the avian subclass: Sauriurae, only Chaoyangia to Ornithurae. The earliest diversification and big development of birds from late Jurassic to Early Cretaceous as well as the peculiar geological background and depositional environment in Western liaoning constitute the main reasons for the appearance of abundant Mesozoic bird fossils in this area. In this region, the continental Jurassic-Cretaceous boundary being put between the Confuciusornis bearing Yixian Formation and the Cathayornis and Chaoyangia bearing Jiufotang Formation is proposed.

关键词： liaoning Mesozoic birds geology

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

geological Characteristics and Its Metallogenesis of Daolundaba Copper Polymetallic Deposits,Inner Mongolia

引用

矿物学报 2011年第S1期31卷 86-87页

作者： PAN Xiao-fei1,hou Zeng-qian1,WANG Shuo2,TONG Ying1,XUE Huai-min1,Zhou Xi-wen1,XIE Yu-ling3(1.institute of geology,chinese academy of geological sciences,beijing 100037,China 2.Inner Mongolia geological Prospecting limited Company,010020,China 3.University of Science and Tectonlogy beijing,beijing 100029,China)

1 geology Daolundaba copper polymetallic deposit occurs in West Ujimqin Banner,the Xilin Gol league of Inner Mongolia,along the west side of South part of Daxinganling ore belt,whose tectonic position just lies at the junction of Siberian Block in the south part,North China Block in the north and Songliao block in the *** Daolundaba copper polymetallic deposit is hosted by the lower Proterozoic Baoyintu group of biotite-plagioclase gneiss(Pt1by),upper Permian linxi formation of sandy slate(P2l),and the Hercynian Qianjinchang pluton of biotite granite.

关键词： In geological Characteristics and Its Metallogenesis of Daolundaba Copper Polymetallic Deposits,Inner Mongolia Pb

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：