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Global Geology 2021年第3期24卷 129-143页

作者： YAN Xiangyu YANG Debin MU Maosong HAO Leran College of Earth Sciences Jilin UniversityChangchun 130061China

The petrogenesis and geodynamic setting of the late jurassic Baita porphyry quartz monzodiorite in Xingcheng-Liaoxi area provide information for understanding the Mesozoic tectonic evolution of the northeastern North China *** this paper,geochronological,whole-rock geochemical,and in-situ zircon Hf isotopic analyses of Baita porphyry quartz monzodiorite were investigated to constrain the crystallization age and *** exhibit typical oscillatory zoning in cathodoluminescence images and show relatively high Th/U ratios(0.78-1.62),and U-Pb analyses indicate that these rocks were crystallized during the late jurassic(159±1 Ma).Geochemically,they are characterized by high contents of SiO 2(65.21wt%-65.31wt%),Al 2O 3(16.29wt%-16.31wt%),Sr(521×10^(-6)-539×10^(-6)),and Sr/Y ratio(45.1-47.8)but low Y(10.9×10^(-6)-12.0×10^(-6)),with obvious adakitic geochemical *** above-mentioned findings,combined with their negativeε_(Hf)(t)values(-21.7 to-20.2),corresponding two-stage model age(T_( DM2))of 2579-2484 Ma,as well as low MgO(1.38wt%-1.39wt%),Cr(18.5×10^(-6)-19.5×10^(-6))and Ni(9.45×10^(-6)-9.46×10^(-6))values,indicate that Baita porphyry quartz monzodiorite may be generated by partial melting of the Neoarchean-Paleoproterozoic thickened basaltic lower *** on the results from this study and pre-vious regional studies,it is concluded that Baita porphyry quartz monzodiorite was spatially related to the westward subduction of the Paleo-Pacific plate.

关键词： Liaoxi late jurassic adakitic rocks thickened lower crust Paleo-Pacific plate

Changes of taxonomical composition of late jurassic-Early Cretaceous palynofloras of Bureya Basin,Russia

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Global Geology 2007年第1期10卷 6-10页

作者： E.V.Bugdaeva V.S.Markevich Institute of Biology and Soil Sciences FEBRAS Vladivostok 690022Russia

The changes of taxonomical composition of the late jurassic- Early Cretaceous palynofloras are revealed, in the upper stream of Bureya River in Bureya Basin. The palynofloras are dominated as follows： the Berriasian one by ferns （Cyatheaceae, Dicksoniaceae, Osmundaceae）, Classopollis and bisaccate pollen; the Valanginiar-Hauterivian one by ferns （Cyatheaceae, Dicksoniaceae）, Ginkgocycadophytus and bisaccate pollen; the Barremian one by ferns （Cyatheaceae, Dicksoniaceae）; the Aptian one by ferns （Cyatheaceae, Dicksoniaceae, Gleicheniaceae） and Ginkgocycadophytus; and the Albian one by ferns （Schizaeaceae） and bisaccate pollen. In the Albian the floral diversity raises with the angiosperms appearing.

关键词： late jurassic Early Cretaceous palynolflora Bureya Basin Russia

THE late jurassic AND EARLY CRETACEOUS COAL-FORMING PLANTS OF TRANSBAIKALIA AND RUSSIAN FAR EAST

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THE LATE JURASSIC AND EARLY CRETACEOUS COAL-FORMING PLANTS O...

New jurassic Paleomagnetic Results from Southeastern China and Their Geological Implication

第二届国际古生物学大会

作者： Eugenia V.BUGDAEVA Valentina S.MARKEVICH Institute of Biology and Soil Sciences Far East Branch of Russian Academy of SciencesVladivostok 690022Russia

The coal-bearing deposits of Western and Eastern Transbaikalia (Goose Lake, Chita-Ingoda, Bukachacha, Turga-Kharanor Basins), Amur River region (Bureya Basin) and Primorye region (Razdolnensky and Partizansky Basins) were studied. In this territory three stages of coal accumulation can be distinguished: the Tithonian-Valanginian, Barremian-Aptian and Albian.

关键词： late jurassic Early Cretaceous palaeobotany coals Transbaikalia Russian Far East

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Acta Geologica Sinica(English Edition) 2011年第4期85卷 792-800页

作者： WANG Bin ZHANG Guowei State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi＇an 710069ShaanxiChina

A paleomagnetic study was carried out on late jurassic sediments in the Nanjing area. Stepwise thermal demagnetization was used to isolate the characteristic higher temperature component （HTC）（D=354.0°,I=48.5°,a95=7.8°）,which passes the reversal test.A 24.7±8.7°counter-clockwise rotation relative to the Sichuan area is detected through comparing this new pole（84.4°N,7.0°E, A95=7.7°）with other coeval poles reported from South *** rotation was conducted by sinistral action of slip *** cases presenting in several areas of eastern China indicate that deformation of eastern China is under the effect of subduction from the Pacific Ocean *** difference on the paleolatitude of several areas across the Tan-Lu fault zone is calculated and suggests about at most 250 km offset distance after the later jurassic.

关键词： paleomagnetism late jurassic Ning-wu basin

Tooth Plates of Ceratodus(Dipnoi,Ceratodontidae)from the Upper jurassic Shaximiao Formation of Guang’an,Sichuan Province,China

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Acta Geologica Sinica(English Edition) 2022年第3期96卷 766-775页

作者： WANG Zizheng JIANG Xinsheng WANG Xiaobing GAO Jianguo ZHU Sibao Chengdu Center of China Geological Survey Chengdu 610081China Center for Fossil Restoration and Research Key Laboratory of Northeastern Asia Paleontological EvolutionMinistry of Natural ResourceChongzhouChengdu 611247China Chongzhou Tianyan Museum ChongzhouChengdu 611247China College of Earth Sciences Chengdu University of TechnologyChengdu 610059China

Ceratodus is a form genus of ceratodontid *** now,only 14 specimens have been reported from the Mesozoic of *** measurements and characteristic comparisons based on 15 well-preserved lungfish tooth plates of Ceratodus type,uncovered from the upper member of the Upper jurassic Shaximiao Formation at Luojiashan,Qianfeng District,Guang'an,Sichuan Province in 2019,allow us to establish a new species,Ceratodus guanganensis ***.,on the basis of its small swollen irregular triangular tooth plate with four low and swollen radial crests on the occlusal surface without *** specimens from the same locality can be referred to *** and *** is the first discovery of Ceratodus in the Guang'an region and represents the fifth Ceratodus fossil site in the Sichuan *** discovery indicates that the climate was hot and arid in the Sichuan Basin during the late jurassic,and reveals a tectonic paleogeographic relationship between the Yangtze block in southwestern China and the Kola Basin in northern Thailand.

关键词： vertebrate paleontology dipnoans Ceratodus Mamenchisaurus-Fauna late jurassic Sichuan Basin

jurassic Tectonic Revolution in China and New Interpretation of the “Yanshan Movement”

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Acta Geologica Sinica(English Edition) 2008年第2期82卷 334-347页

作者： DONG Shuwen ZHANG Yueqiao LONG Changxing YANG Zhenyu JI Qiang WANG Tao HU Jianmin CHEN Xuanhua Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 Department of Earth Sciences Nanjing University Nanjing Jiangsu 210093 Institute of Geology Chinese Academyof Geological Sciences BeUing 100037

With acquisition and accumulation of new data of structural geological investigations and high-resolution isotopic dating data, we have greatly improved our understanding of the tectonic events occurring in eastern China during the period from the late jurassic to Early Cretaceous and may give a new interpretation of the nature, timing and geodynamic settings of the “Yanshan Movement”. During the Mid-late jurassic （165±5 Ma）, great readjustment of plate amalgamation kinematics took place in East Asia and the tectonic regime underwent great transformation, thus initiating a new tectonic regime in which the North China Block was the center and different plates converged toward it from the north, east and southwest and forming the “East Asia convergent” tectonic system characterized by intracontinental subduction and orogeny. As a consequence, the crustal lithosphere of the East Asian continent thickened considerably during the late jurassic, followed immediately by Early Cretaceous substantial lithospheric thinning and craton destruction featured by drastic lithospheric extension and widespread volcano-magmatic activities, resulting in a major biotic turnover from the Yanliao biota to Jehol Biota. Such a tremendous tectonic event that took place in the continent of China and East Asia is the basic connotation of the “Yanshan Movement”. In the paper, according to the deformation patterns, geodynamic settings and deep processes, the “Yanshan Movement” is redefined as the late jurassic East Asian multi-directional plate convergent tectonic regime and its associated extensive intracontinental orogeny and great tectonic change that started at -165±5 Ma. The substantial lithospheric attenuation in East China is considered the post-effect of the Yanshanian intracontinental orogeny and deformation.

关键词： late jurassic Yanshan Movement East Asian multi-directional convergence,intracontinental orogeny lithospheric thickening and thinning

jurassic Amber in Lebanon

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Acta Geologica Sinica(English Edition) 2010年第4期84卷 977-983页

作者： Dany AZAR Raymond GEZE Antoine EL-SAMRANI Jacaueline MAALOULY André NEL Department of Natural Sciences Faculty of Sciences ⅡLebanese UniversityFanarLebanon Museum National d'Histoire Naturelle ParisFrance

Reports of amber predating the Lower Cretaceous are unusual and scarce; they mostly refer to amber pieces of millimetric dimension. In the present study, we report the discovery of 10 new outcrops of jurassic amber in Lebanon. Some of these had large centimetric-sized pieces of amber. The new localities are described, amber is characterized, and its infrared spectra given. Although the new jurassic amber yielded to date no more than fungal inclusions, this material is significant and promising. The discovery, of several jurassic outcrops provides crucial information on the prevailing paleoenvironment of that time.

关键词： amber Lebanon late jurassic Kimmeridgian infrared spectrum

New jurassic Fossil True Bugs of the Pachymeridiidae(Hemiptera:Pentatomomorpha)from Northeast China

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Acta Geologica Sinica(English Edition) 2008年第1期82卷 35-47页

作者： YAO Yunzhi CAI Wanzhi REN Dong Department of Entomology China Agricultural University Beijing 100094 China Key Lab of Insect Evolution and Environmental Changes Capital Normal University Beijing 100037 China

Four new fossil genera and species of true bugs from the family Pachymeridiidae, Beipiaocoris multifurcus, Bellicoris mirabilis, Nitoculus regiUus, and Viriosinervis stolidus, are described. New specimens were collected from the Middle and Upper jurassic non-marine sedimentary strata from the Jiulongshan and Yixian Formations of northeast China. The species Karatavocoris asiatica Becker-Migdisova, 1963, which was considered to be a member of the family Coreidae is transferred to the Pachymeridiidae. A new map of all known and newly discovered fossil pachymeridiid localities is given. The diagnosis of the family is modified.

关键词： Hemiptera Pachymeridiidae new genera fossil late jurassic Yixian Formation Middle jurassic Jiulongshan Formation China

A NEW PADDLEFISH FROM THE UPPER jurassic OFNORTHEAST CHINA

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古脊椎动物学报(中英文） 1994年第2期 140-142页

作者： Lu Liwu(Geological Museum of China, Beijing 100034)

This paper describes a new fossil paddlefish, associated with Lycoptera, Peipioosteus, from the Upper jurassic Yixian Formation, Lingyuan County, Liaoning Province, northeastern China. It is the earliest and most prim... 详细信息

关键词： Northeast China late jurassic Polyodontidae

On Liaoximordellidae Fam. Nov. (Coleoptera, Insecta) from the jurassic of Western Liaoning, China

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Acta Geologica Sinica(English Edition) 1993年第3期67卷 361-370,372页

作者： Wang Wenli Institute of Natural History, Beijing Natural History Museum Yang Zunyi

A new insect family Liaoximordellidae (fam. nov.) has been named for a well-preserved specimen which was collected from the Upper jurassic outcropping west of Daxinfangzi Village, Lingyuan County, Liaoning Province. The specimen can not be put into Mordellidae or Praemordellidae because it possesses some original and intermediate characters in morphology. It serves the study of mordellid evolution. Besides, the fossil group associated with the insect is important for the stratigraphic division of the Mesozoic in western Liaoning.

关键词： western Liaoning Lingyuan County late jurassic Liaoximordellidae (fam. nov.)