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Geochronology,Geochemistry,and Sr-Nd-Hf Isotopes of the Diorite Porphyrites from the Weining Beishan Area,Ningxia Hui Autonomous Region:Constraints on Their Source and Tectonic Implications

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Journal of Earth Science 2024年第2期35卷 462-475页

作者： Anlu Liu Lianfu Hai Jinke Liu Xiaojun Zhang Haifeng Li Fengshun Zhao Guoliang Zhao Jinhe Bai yifu museum China University of GeosciencesWuhan430074China School of Earth Resources China University of GeosciencesWuhan430074China Mineral Geological Survey Institute of Ningxia Hui Autonomous Region Yinchuan750021China National Demonstration Center for Experimental Mineral Exploration Education China University of GeosciencesWuhan430074China Coal Geological Survey Institute of Ningxia Hui Autonomous Region Yinchuan750021China Zhuhai Engineering Investigation Institute of Guangdong Province Zhuhai519000China

The Weining Beishan area of Ningxia Hui Autonomous Region is located at on the western edge of the Helanshan tectonic belt,which is a tectonic joint among Alxa Block,Ordos Block,and North Qilian orogenic ***,the tectonic evolution of this area remains unclear due to the lack of magmatic *** paper conducted researches on geochronology,geochemistry,and Sr-Nd-Hf isotopes of the diorite porphyrites exposed in the Weining Beishan *** zircon U-Pb dating yields two ages of 145.0±1.1 and 146.2±1.5 Ma,and the whole-rock geochemical data indicate that the diorite porphyrites are metaluminous to weakly peraluminous and high-K calc-alkaline *** characteristics of highly initial^(87)Sr/^(86)Sr ratios(0.70816 to 0.71047),negativeε_(Nd)(t)(−8.9 to−8.4),and negativeε_(Hf)(t)(−13.8 to−21.2)indicate that the diorite porphyrites originated from partial melting of the middle-lower ancient crust related to the North china *** with the regional geology,we suggested that partial melting was triggered by a tectonic activity of deep faults cutting through the crust under the regional stress transformation from compressing to extension during the Late Jurassic–Early Cretaceous,which is probably related to the westward subduction of the Paleo-Pacific Plate.

关键词： zircon U-Pb dating Sr-Nd-Hf isotopes magma source diorite porphyrite Weining Beishan area Ningxia Hui Autonomous Region geochronology geochemistry

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Cretaceous dinosaur and crocodylomorph egg records of the Sanshui Basin,Guangdong Province,southern china

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Journal of Palaeogeography 2023年第3期12卷 401-418页

作者： Li-Da Xing Zi-Sheng Guo Rui Wu Chun-Lei Du Dong-Haowang W.Scott Persons IV State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences(Beijing)Beijing100083China School of the Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China Grandview museum of Natural Science Guangzhou 510630Guangdong ProvinceChina School of Earth Sciences China University of Geosciences(Wuhan)Wuhan 430074Hubei ProvinceChina Mace Brown museum of Natural History Department of Geology and Environmental GeosciencesCollege of CharlestonCharlestonSC 29401USA

This paper describes newly discovered dinosaur and crocodylomorph egg fragments from the Upper Cretaceous Sanshui and Dalangshan formations of the Sanshui Basin of Guangdong Province,southern *** the absence of macroscopic information,the eggshell specimens can be identified to the oofamilies Prismatoolithidae,Elongatoolithidae and Krokolithidae,and it is hypothesized that these three families of eggs correspond to troodontids,oviraptorids and crocodiloids,*** with egg fossils from Nanxiong Basin,Heyuan Basin and Ganzhou Basin highlights the similarity between these egg assemblages and those from Nanxiong *** egg fossils found in the Sanshui and the Dalangshan for-mations enrich the known faunal types in the research area and facilitate further studies on the diversity of Late Cretaceous vertebrate assemblages in the Sanshui Basin.

关键词： Prismatoolithidae Elongatoolithidae Krokolithidae Sanshui Formation Dalangshan Formation Upper Cretaceous

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Largest dinosaur tracksite in china (Cretaceous, Zhaojue area, Sichuan Province): On the verge of destruction

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Geoscience Frontiers 2021年第5期12卷 124-137页

作者： Lida Xing Martin G.Lockley Hendrik Klein W.Scott Persons IV Guangzhao Peng Yong Ye Miaoyan Wang State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China School of the Earth Sciences and Resources China University of GeosciencesBeijing 100083China Dinosaur Trackers Research Group University of ColoradoDenver 80217USA Saurierwelt Paläontologisches museum Alte Richt 7D-92318 NeumarktGermany Mace Brown museum of Natural History Department of Geology and Environmental GeosciencesCollege of CharlestonCharleston 29401USA Zigong Dinosaur museum ZigongSichuan ProvinceChina

The Zhaojue(ZJ)tracksites represent multiple steeply-inclined,track-bearing exposures in the clastic Feitianshan Formation of Sichuan Province that have been sequentially,excavated,mapped,expanded and destroyed,by quarrying,erosion or collapse,for almost three *** quarried area extends for more almost 1.0 km from north to south and-0.5 km from east to *** important track-bearing surfaces have been identified and identified as ZJ-Ⅰ,ZJ-Ⅱ,ZJ-ⅡN and ZJ-Ⅲ,some of which are newly exposed surfaces or expanded surfaces that were previously partially *** represent surfaces lost since they were first reported in papers published in *** ZJ-Ⅱ site represents a hugely expanded continuation of a much smaller track-bearing surface described in *** was mapped using drone technology,and now represents the largest tracksite in china,with a minimum count of 933 recognizable tracks,and the longest recorded sauropod and ornithopod trackways from china(-80 m and-52 m respectively),which also reveal a pronounced change in the direction of trackmaker *** ZJ-Ⅱ surface represents the best Zhaojue paleo-census sample giving a count of 68 individuals from 61 trackways(37 ornithopod,10 theropod,14 sauropod)and isolated tracks(representing 7 individuals).Thus,ornithopods(both large and small trackmakers)represent-54%of the total number of *** smaller ZJ-Ⅲ surface was mapped using traditional methods,and reveals at least 6 ornithopod-and 4 theropod *** the ZJ-Ⅱ and ZJ-Ⅲ surfaces reveal parallel ornithopod trackways suggestive of social or gregarious *** combined data from all four Zhaojue surfaces reveal a total of 1928 tracks,and include a few previously reported pterosaurs and theropod swim *** Zhaojue quarry complex provide a good example of multiple track-bearing sites(surfaces)that require long term study and monitoring to extract as much trackway data as possible before in situ physical evidence is lost.

关键词： Feitianshan Formation Onithopod Teropod Suropod

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First Report of Avian Tracks from the Cretaceous of Tibet, china

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Acta Geologica Sinica(English Edition) 2017年第6期91卷 2312-2313页

作者： XING Lida CHOU Chunyong Martin G.LOCKLEY YANGCHEN Dolkar CHEN Xingru MA Xinghong ZHOU Wenjun XU Hantian State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences School of the Earth Sciences and Resources China University of Geosciences State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of Sciences Dinosaur Tracks museum University of Colorado School of Geophysics and Information Technology China University of Geosciences School of Land Science and Technology China University of Geosciences

Objective Despite a large number of bird fossils in the Jehol Biota, Mesozoic bird records from other parts of china are dominated by tracks. Late Cretaceous bird tracks are rarely found in china. Reliable reports so far include a Dongyangornipes and Koreanaornis assemblage of early Late Cretaceous age from Dongyang City, Zhejiang Province, china （Azuma et al., 2013）. Buckley et al. （2016） consider Dongyangornipes sinensis a subjective junior synonym of Uhangrichnus chuni. Type Uhangrichnus chuni （Yang et al. 1995; Lockley et al., 2012） from the Uhangri Formation, Hwangsan Basin of South Korea is Late Cretaceous in age, and the trackrnaker was a web-footed avian.

关键词： First Report Avian Tracks the Cretaceous of Tibet china

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Yuzhou Flora——A hidden gem of the Middle and Late Cathaysian Flora

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Science china Earth Sciences 2012年第10期55卷 1601-1619页

作者： YANG GuanXiu WANG HongShan School of Earth Sczences and Resources China University of Geosciences Beijing 100083 China Florida museum of Natural History University of Florida Gainesville FL 32611 USA

The Yuzhou Flora of the southern North china Platform possesses the typical regional features of the Middle and Late Cathaysian *** a long time during the Permian,this area was located on shoreline marine tidal flats and deltas at low latitudes with a warm and humid ***,many successive layers with abundant well-preserved plant fossils and a complete evolutionary sequence were *** is a unique and ideal place to study the Middle and Late Cathaysian *** have recognized 111 genera and 307 species from this *** rapid morphological evolution and uninterrupted stratigraphic succession of Lobatannularia(Sphenophytes) make this group one of the bases for biostratigraphic divisions of the Permian System of the North china *** percent of Pteridophytes belong to the order Marattiales,which are well developed during the early and middle stages of the Yuzhou Flora but experience a sudden decline during the late *** Pteridospermatophytes only flourished during the Middle Permian whereas advanced Peltaspermales are extremely well developed at the end of the early Late *** them Shenzhouphyllum is one of characteristic elements in the late stage of the Yuzhou *** Cycadophytes evolved relatively early in this area and they differentiated and proliferated during the late Middle to early Late *** number of species of Ginkgophytes is small but this group is extremely abundant,especially in the early Late *** Gigantopteridales(preangiosperms) is a very important and unique group in the Yuzhou *** upon their venation and leaf architecture,this group can be divided into three evolutionary stages,i.e.,appearance and differentiation,first flourishing,and second flourishing and sudden disappearance,which form the basis for biostratigraphic division and correlation of the Permian System of the North china *** upon the evolutionary trend of venation pattern and leaf architecture,

关键词： Yuzhou Flora southern North china Platform Permian Middle and Late Cathaysian Flora

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A probable tyrannosaurid track from the Upper Cretaceous of southern china

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Science Bulletin 2019年第16期64卷 1136-1139页

作者： Lida Xing Kecheng Niu Martin G.Lockley Hendrik Klein Anthony Romilio W.Scott Persons IV Stephen L.Brusatte State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China School of the Earth Sciences and Resources China University of GeosciencesBeijing 100083China Yingliang Stone Nature History museum Nan’an 362300China Dinosaur Trackers Research Group University of ColoradoDenver 80217USA Saurierwelt Palaontologisches museum Neumarkt D-92318Germany School of Biological Sciences the University of QueenslandQueensland 4072Australia Mace Brown museum of Natural History Department of Geology and Environmental GeosciencesCollege of CharlestonCharleston 29401USA School of geosciences Grant InstituteUniversity of EdinburghEdinburgh EH9 3FEUK

A large number of Upper Cretaceous(Maastrichtian)dinosaur skeletal fossils have been found in the Nanxiong Basin and adjacent Ganzhou area,including those of theropods,sauropods and ***,known dinosaur ichnoassemblages from the Nanxiong Basin partly indicate a different fauna,with dominating large-and medium-sized ornithopods,theropods,and pterosaurs(1,2)This is one of many known examples where trace and body fossil assemblages from the same formation or geologically discrete region show a different *** and paleobiogeographical analyses therefore should consider data from both,before any conclusions can be *** can be classified according to the relative degree of similarity or congruity(or difference/incongruity)between trace and body fossils into the 5 categories proposed by Lockley[3].

关键词： tyrannosaurid track Upper Cretaceous southern china

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Recent discovery of handaxes associated with tektites in the Nanbanshan locality of the Damei site, Bose basin, Guangxi, South china

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Chinese Science Bulletin 2008年第6期53卷 878-883页

作者： WANG wei MO JinYou HUANG ZhiTao Faculty of Earth Science China University of Geosciences Wuhan 430074 China Natural History museum of Guangxi Zhuang Autonomous Region Nanning 530012 China

This paper reports the recent discovery of 176 stone artifacts, including two handaxes (bifacial large cutting tools), which are preserved in the laterized sediments of terrace 4 of the Youjiang River at the Nanbanshan locality of the Damei site in the Bose basin, south china. Their characteristics are similar to Paleolithic stone artifacts discovered from other sites in this basin. The handaxes, picks and other stone artifacts are associated with 155 tektite pieces found in the same horizontal layer. These fresh, unabraded and sharp-edged tektites were buried immediately after the airfall event. This provides fur- ther evidence that the Bose stone artifacts and the tektites were deposited simultaneously around 0.8 Ma. More stone artifacts were also unearthed above the tektite layer, indicating that early humans in the area survived the event.

关键词：中国南方广西百色盆地南半山遗址手斧玻璃陨石

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Geochronology， geochemistry， and Sr-Nd-Hf isotopes of the diorite porphyrites from the Weining Beishan area， Ningxia Hui Autonomous Region: Constraints on their source and tectonic implication

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Journal of Earth Science 2021年

作者： Anlu Liu Lianfu Hai Jinke Liu Xiaojun Zhang Haifeng Li Fengshun Zhao Guoliang Zhao Jinhe Bai yifu museum， china university of geosciences School of Earth Resources， china university of geosciences Mineral Geological Survey Institute of Ningxia Hui Autonomous Region National Demonstration Center for Experimental Mineral Exploration Education， china university of geosciences Wuhan Coal Geological Survey Institute of Ningxia Hui Autonomous Region Zhuhai Engineering Investigation Institute of Guangdong Province

The Weining Beishan area of Ningxia Hui Autonomous Region locates on the western edge of the Helanshan tectonic belt， which is a tectonic joint among Alxa block， Ordos block， and North Qilian orogenic belt. However， the tectonic evolution of this area remains unclear due to the lack of magmatic information. This paper conducted researches on geochronology， geochemistry， and Sr-Nd-Hf isotopes of the diorite porphyrites exposed in the Weining Beishan area. The zircon U-Pb dating yields two ages of （145.0 ± 1.1） Ma and （146.2 ± 1.5） Ma， and the whole-rock geochemical data indicate that the diorite porphyrites are metaluminous to weakly peraluminous and high-K calc-alkaline series. The characteristics of highly initial 87Sr/86Sr ratios （0.70816 to 0.71047）， negative εNd（t）（-8.9 to -8.4）， and negative εHf（t）（-13.8 to -21.2） indicate that the diorite porphyrites originated from partial melting of the middle-lower ancient crust related to the North china Craton. Combined with the regional geology， we suggested that partial melting was triggered by a tectonic activity of deep faults cutting through the crust under the regional stress transformation from compressing to extension during the late Jurassic - early Cretaceous， which is probably related to the westward subduction of the Paleo-Pacific plate.

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Hydroxycalciopyrochlore, A New Mineral Species from Sichuan, china

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Acta Geologica Sinica(English Edition) 2014年第3期88卷 748-753页

作者： YANG Guangming LI Guowu XIONG Ming PAN Baoming YAN Chenjie State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Crystal Structure Laboratory China University of Geosciences

Hydroxycalciopyrochlore,ideally （Ca,Na,U,□）2（Nb,Ti）2O6（OH）,cubic,is a new mineral species （IMA2011-026） within the pyrochlore supergroup that was found occurring at the Maoniuping mine,Mianning County,Xichang prefecture,Sichuan Province,southwest *** mineral is found in an alkali feldspar granite rare-earth ore deposit （26-27 Ma）.Associated minerals include calcite,barite,celestine,albite,aegirine,aegirine-augite,fluorite,parasite-（Ce）,thorite,thorianite,zircon,galena,sphalerite,magnetite,and *** occur mostly as octahedra,and less often as dodecahedra and tetrahexahedra or combinations *** occur with an allotriomorphic habit with a thick triangular tabular *** generally range from 0.1 to 1 mm in *** mineral is brownishblack,greenish-black and black on fresh sections with a brown *** crystal is translucent,and has a greasy lustre on fresh *** is metamict without any observed parting or cleavage and with a conchoidal *** Vickers microhardness is 572 kg/mm2 （5-6 on the Mohs hardness scale）.The density measured by hydrostatic weighing is 5.10（3） g/*** strongest four reflections in the X-ray powder-diffraction pattern [d in（A）（Ⅰ） hkl] are：2.9657 （100） 2 2 2,1.8142 （34） 0 4 4,1.5463 （21） 2 2 6,2.5688 （18） 0 0 *** unit-cell parameters are a =10.381（4）（A）,V=1118.7（7）（A）3,Z =*** structure was solved and refined in the space group Fd3m with R =*** empirical formula is （Ca0.74Na0.5sU0.40Ce0.05Fe0.02□0.21）2.00（Nb1.15Ti0.s0Ta0.03Al0.01Mg0.01）2.00O6.02 [（OH）1.01F0.09]1.10,on the basis of 2 atoms of B pfu; the simplified formula is （Ca,Na,U,□）2（Nb,Ti）2O6（OH）.Type material is deposited in the Geological museum of china,Beijing,People＇s Republic of china,catalogue number M11800.

关键词： Mineralogy Hydroxycalciopyrochlore pyrochlore supergroup crystal structure Sichuanprovince

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Early Jurassic basal sauropodomorpha dominated tracks from Guizhou, china: Morphology, ethology, and paleoenvironment

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Geoscience Frontiers 2019年第1期10卷 229-240页

作者： Lida Xing Martin G. Lockley Dongjie Tang Hendrik Klein Guangzhao Peng Yong Ye Baoqiao Hao State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences School of Earth Sciences and Resources China University of Geosciences State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Dinosaur Trackers Research Group CB 172 University of Colorado at Denver Saurierwelt Pal?ontologisches museum Zigong Dinosaur museum

The newly discovered large(350 m^2) Yantan dinosaur tracksite, in the Lower Jurassic Ziliujing Formation of Guizhou Province, china, reveals at least 250 footprints of which ~97 can be resolved into trackways of sauropodomorphs. All the trackways are sub parallel likely indicating gregarious behavior. One theropod track(cf. Grallator) was recorded. The sauropodomorph tracks predominantly represent quadrupedal progression(Morphotype A), and footprint morphology is similar to the ichnospecies Liujianpusshunan, characterized by outward pes rotation. Three trackways indicate bipedal progression, and two of these(Morphotype B) indicate inward pes rotation, accompanied by elongate pes digit scratch marks. For the latter phenomenon three possible scenarios are discussed:(1) significant rotation changes accompanying changes in gait,(2) swimming behavior,(3) formation of *** evidence indicates the tracks were made on a linguloid rippled, muddy, immature sandstone substrate characterized by significant differences in substrate consistency across the trackbearing surface. Microbially induced sedimentary structures(MISS) characterized by distinctive wrinkle marks indicate a stressed, probably semi-arid, paleoenvironment that was not conducive to habitation by invertebrate organisms. This is consistent with other evidence that Lower Jurassic sauropodomorph tracks are often associated with semi-arid paleoenvironments.

关键词： Sauropodomorph tracks Ziliujing formation Lower Jurassic Guizhou Province

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