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Acta Geologica Sinica(English Edition) 2014年第1期88卷 6-12页

作者： MO Jinyou HUANG Chaolin XIE Shaowen Buffetaut ErIC Natural History Museum of Guangxi CNrS UMR 8538 Laboratoire de Geologie de l'Ecole Normale Superieure

A nearly complete right maxillary or left dentary tooth（NHMG 10858） from the Lower Cretaceous Xinlong formation of the Napai Basin, fusui County, Guangxi, southern China, is described. The tooth is large in size, with a CBL of 37 mm. Given the geological age and its crown morphology, including the size, it is most likely that the tooth belongs to a carcharodontosaurid. The recovered specimen represents one of the largest theropod teeth hitherto reported from the Early Cretaceous of Asia.

关键词： Tooth Theropoda Xinlong formation Early Cretaceous Napai Basin Guangxi

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空中之龙:短尾翼龙的飞行(英文)

地球学报 2010年第S1期31卷 18-19页

作者： ross A.ELGIN Abteilung geologie Staatiches Museum für Naturkunde KarlsruheErbprinzenstrasse 13.76133 KarlsruheGermany

The Pterosaur flight Dynamics research Group was established just over three years ago as part of a Karlsruhe based initiative to

关键词：翼龙短尾空中飞行

recycling process and proto-kimberlite melt metasomatism in the lithosphere-asthenosphere boundary beneath the Amazonian Craton recorded by garnet xenocrysts and mantle xenoliths from the Carolina kimberlite

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Geoscience frontiers 2022年第5期13卷 89-105页

作者： fernanda Gervasoni Tiago Jalowitzki Marcelo Peres rocha ricardo Kalikowski Weska Eduardo Novais-rodrigues rodrigo Antonio de freitas rodrigues Yannick Bussweiler Elisa Soares rocha Barbosa Jasper Berndt Elton Luiz Dantas Valmir da Silva Souza Stephan Klemme Centro de Engenharias Universidade Federal de Pelotas(UFPel)PelotasBrazil Programa de Pós-graduação em Geociências Universidade Federal do Rio Grande do SulPorto AlegreBrazil Programa de Pós-graduação em Geologia Instituto de GeociênciasUniversidade de Brasília(UnB)BrasíliaBrazil faculdade de Geociências Universidade Federal do Mato Grosso(UFMT)CuiabáBrazil institut für geologie und Mineralogie Universität zu KölnGermany faculdade de Ciências e Tecnologia Universidade Federal de Goiás(UFG)Aparecida de GoiâniaBrazil institut für Mineralogie Universität MünsterMünsterGermany

Here we present new data on the major and trace element compositions of silicate and oxide minerals from mantle xenoliths brought to the surface by the Carolina kimberlite,Pimenta Bueno Kimberlitic field,which is located on the southwestern border of the Amazonian *** also present Sr-Nd isotopic data of garnet xenocrysts and whole-rocks from the Carolina *** xenoliths are mainly clinopyroxenites and *** of the clinopyroxenites were classified as GPP–PP–PKP(garnet-phlogopite peridotite,phlogopite-peridotite,phlogopite-K-richterite peridotite)suites,and two clinopyroxenites(eclogites)and two garnetites are relicts of an ancient subducted *** and pressure estimates yield 855–1102℃ and 3.6–7.0 GPa,*** are enriched in light rare earth elements(LrEE)(La_(N)/Yb_(N)=5–62;Ce_(N)/Sm_(N)=1–3;where N=primitive mantle normalized values),they have high Ca/Al ratios(10–410),low to medium Ti/Eu ratios(742–2840),and low Zr/Hf ratios(13–26),which suggest they were formed by metasomatic reactions with CO_(2)-rich silicate *** with high TiO_(2)(>2.0 wt.%),Al_(2)O_(3)(>12.0 wt.%),and feOt(5.0–13.0 wt.%)resemble those found in the groundmass of kimberlites,lamproites and ***,phlogopite with low TiO_(2)(r Al_(2)O_(3)(re similar to those present in GPP-PP-PKP,and in MArID(mica-amphibole-rutile-ilmenite-diopside)and PIC(phlogopite-ilmenite-clinopyorxene)*** GPP-PP-PKP suite of xenoliths,together with the clinopyroxene and phlogopite major and trace element signatures suggests that an intense proto-kimberlite melt metasomatism occurred in the deep cratonic lithosphere beneath the Amazonian *** Sr-Nd isotopic ratios of pyrope xenocrysts(G3,G9 and G11)from the Carolina kimberlite are characterized by high ^(143)Nd/^(144)Nd(0.51287–0.51371)and eNd(+4.55 to+20.85)accompanied with enriched ^(87)Sr/^(86)Sr(0.70405–0.71098).These results suggest intera

关键词： Carolina kimberlite K-rich mantle xenoliths Ancient subducted slab Proto-kimberlite melt metasomatism

Metamorphic Characteristics and Tectonic Implications of the Kadui Blueschist in the Central Yarlung Zangbo Suture Zone,Southern Tibet

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Journal of Earth Science 2018年第5期29卷 1026-1039页

作者： Guangming Sun Xu-Ping Li WenYong Duan Shuang Chen Zeli Wang Lingquan Zhao Qingda feng Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals Shandong University of Science and TechnologyQingdao 266590China institut fur geologie Mineralogie und GeophysikRuhr-UniversitatBochum 44780Germany Center of Hydrogeology and Environmental Geology Survey China Geological SurveyBaoding 071051China

The Kadui blueschist is located in the central section of Yarlung Zangbo suture zone （YZSZ）, southern Tibet, and has been subjected to the subduction of the Neo-Tethyan Ocean below the Asian Plate and provides important clues for better understanding the evolution of the India-Asia convergence zone. In this paper, the systematical petrographic and mineral chemical studies were carried out on the Kadui blueschist, which reveal a mineral assemblage of sodic amphibole, chlorite, epidote, albite and quartz with accessory minerals of titanite, calcite and zircon. Electron microprobe analyses demonstrate that amphibole shows zoned from actinolite core to ferrowinchite/riebeckite rim composition indicating that the sodic amphibole has formed during a prograde metamorphic event. The protolith of the blueschist is an intermediate-basic pyroclastic rock. The calculated pseudosection indicates a clockwise P-T path and constrains peak metamorphic conditions of about 5.9 kbar at 345 ℃. This condition is transitional between pumpellyite-actinolite, greenschist and blueschist facies with a burial depth of 20-22 km and a thermal gradient of 15-16 ℃/km. This thermal gradient belongs to high pressure intermediate P/T facies series and is possibly related to a warm subduction setting of young oceanic slabs. Our new findings indicate that the Kadui blueschist in the central part of YZSZ experienced a rapid subduction and exhumation process as a response to a northward subduction of the Neo-Tethyan oceanic lithosphere during the initial India-Asia collision stage.

关键词： Kadui blueschist metamorphism P-T conditions accretionary complex southern Tibet.

Arthropod trace fossils from the Zhujiaqing formation (Meishucunian, Yunnan) and their palaeobiological implications

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Progress in Natural Science:Materials International 2003年第10期 75-80页

作者： Bernd WEBEr 1* and ZHU Maoyan 2 (1. freie Universitt Berlin, institut für Geologische Wissenschaften, fachrichtung geologie, Ackerstraβe 71～76, D 13355 Berlin, Germany 2. LPS, Nanjing institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China) freie Universit Berlin Institut für Geologische Wissenschaften Fachrichtung Geologie Ackerstraβe 71～76 D-13355 Berlin Germany LPS Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing 210008 China

Along with several non arthropod ichnotaxa and rather non specific scratchmarks, the Upper Phosphate of the Zhujiaqing formation (Early Meishucunian Stage) in Eastern Yunnan yielded well preserved resting and digging traces of the rusophycus type interpreted as resting traces of unknown large arthropods (ca. 3～6 cm in length). The discernible morphological details of these trace fossils enable a rough estimation of the body plan characteristics of the trace originators placing the latter doubtless into the early arthropods, if not euarthropods. The spectrum of the Meishucunian ichnoassemblage, especially the different types of arthropod repichnia point to the existence of a complex benthic ecosystem consisting of animals with different behavioural patterns and life styles already during the earliest Cambrian (Nemakit Daldyn), and demands the assumption of a longer evolutionary past history of the benthic life on earth before the so called “Cambrian Explosion” of the metazoans.

关键词： Meishucunian Stage arthropods ichnofauna arthropod evolution Precambrian Cambrian Boundary Yangtze Platform.

Optimal parameter selection for qualitative regional erosion risk monitoring:A remote sensing study of SE Ethiopia

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Geoscience frontiers 2011年第2期2卷 237-245页

作者： Moncef Bouaziz Mathias Leidig richard Gloaguen remote Sensing Group Institut für GeologieTU Bergakademie FreibergBernhard-von-Cotta Strasse 2D-09596 FreibergGermany Laboratoire 3E(AD-10-02) Ecole National d'Ingenieurs de SfaxBP3038 SfaxTunisia School of Earth and Environmental Science University of PortsmouthBurnaby RoadPortsmouth PO13QLUnited Kingdom

Arid and semi-arid regions are susceptible to high levels of erosion. A rapid and cost effective methodological erosion assessment for these regions is required to describe and monitor the processes that control erosion. This study uses remote sensing to describe the contribution of several factors that control erosion. Topography, land use, vegetation density, soil properties and climatic proxies are used to determine erosion risk and to provide basic maps of water and soil conservation practices. A hierarchical decision tree is used to sum and combine the weight of parameters controlling the erosion. The assigned weights of each spatial unit express the susceptibility to erosion. We focus on the catchment basin of the Maleka Wakena reservoir, located in the southeastern portion of the main Ethiopian rift, where erosion is the major environmental problem. Three different combinations of the dominant controlling factors are yielded in this study. In order to optimize the qualitative erosion risk assessment, each combination is discussed and evaluated depending on the contribution of parameters involved in the erosion process.

关键词： Erosion risk remote sensing Modeling Geographic informationsystem (GIS) Ethiopia

贵州独山与奥地利格拉茨中泥盆世Argutastrea珊瑚群之对比

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古生物学报 2006年第1期45卷 52-59页

作者：廖卫华 Bernhard Hubmann 中国科学院南京地质古生物研究所南京210008 institut für geologie und Palaontology Universit at GrazHeinrichstr.26A-8010 Grazsterreich

锐星珊瑚(Argutastrea)是泥盆纪地层中常见的一种块状群体珊瑚,它在生物地层对比、生物地理区系划分以及古生态与古地理重建等方面都具有重要的意义。通过近年来对华南独山和奥地利格拉茨两地采集的Argutastrea群体珊瑚标本进行比较深... 详细信息

锐星珊瑚(Argutastrea)是泥盆纪地层中常见的一种块状群体珊瑚,它在生物地层对比、生物地理区系划分以及古生态与古地理重建等方面都具有重要的意义。通过近年来对华南独山和奥地利格拉茨两地采集的Argutastrea群体珊瑚标本进行比较深入的对比研究,确认两地存在着一些十分相似的属种,推断彼此之间当时可能海域相通,并同属于一个老世界生物地理大区(Old World real m)。此外,还讨论了该属与其相关的六方珊瑚(Hexagonaria)、多角珊瑚(Prismatophyllum)等属之间的异同。

关键词：锐星珊瑚六方珊瑚多角珊瑚泥盆纪贵州独山格拉茨

Geochemistry of the volcanic rocks from Bioko Island(“Cameroon Hot Line”)： Evidence for plume-lithosphere interaction

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Geoscience frontiers 2016年第5期7卷 743-757页

作者： fadimatou Ngounouno Yamgouot Bernard Déruelle Isaac Bertrand Gbambié Mbowou Ismaila Ngounouno Daniel Demaiffe Departement des Sciences de la Terre Faculte des Sciences Universite de Ngaoundere B.P. 454 Ngaoundere Cameroon Laboratoire de Magmatologie et Ceochimie lnorganique et Experimentale (MAGIE) Institut de Physique du Globe de Paris UMR 7154 Universite Pierre et Marie Curie 4 place Jussieu 75252 Paris cedex 05 France Departement des Mines et de la geologie Ecole de Geologie et d'Exploitation Miniere (EGEM) Universite de Ngaoundere B.R 115 Meiganga Cameroon Laboratoire de Geochimie lsotopique et Geodynamique Chimique DSTE (CP 160/02) Universite Libre de Bruxelles 50 av. Roosevelt 1050 BruxellesBelgium

Bioko Island（3008 m a.s.l） is located in the presently more active volcanic zone of the Cameroon Line and composed essentially of alkaline basalts and hawaiites, and lesser mugearites. The rocks show microlitic porphyritic texture with phenocrysts of olivine（83% 〈 fo 〈 87%） and clinopyroxene in a matrix of plagioclase, clinopyroxene and oxides. Hawaiites and mugearites also include phenocrysts of plagioclase（An62-67Ab35-32Or3-1）. Major element variation diagrams show an increase in Si O2, Al2O3, Na2 O and K2 O with increasing Mg O for the studied rock groups. The rocks are characterized by low（^86Sr/^87Sr）i ratios（0.70320e0.70406）, high 3Nd（t） values（2.56e4.33） and high（^206Pb/^204Pb）i ratios（20.032e20.035） *** are enriched in LILE and LrEE, and have（Hf/Sm）N= 0.57e1.16. These geochemical signatures are similar to those of the Mount Cameroon rocks, and might be attributed to low degrees of partial melting from a garnet-amphibole-bearing mantle source. The trace elements and isotopic compositions suggest that the parental magma source might have involved HIMU- and EM1-components.

关键词： Geochemistry HIMU-EM1 Volcanic rocks Bioko Cameroon Hot Line

Seventy Years’“Micropedology”1938-2008:The Past and future

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Journal of Mountain Science 2009年第2期6卷 101-106页

作者： G.Stoops Laboratorium voor Mineralogie en Petrologie Vakgroep Geologie en Bodemkunde WE13 Universiteit GentKrijgslaan 281 S8 B-9000 Gent Belgium

Although the first microscopic observations on soils date already from the beginning of the twentieth century, the publication of Kubiena＇s book ＂Micropedology＂ in 1937 is considered as the beginning of this new scientific discipline. This first system for micromorphological descriptions of soils is considered as morphoanalytical, analysing the fabric according to pure morphological criteria. In a second period Kuniena used a morphogenetic approach, directly relating the global observed fabric to genetic soil horizons. This system, mainly limited to European soils, was in general use till the early nineteen-seventies. End of the nineteen-fifties non- genetic soil classification systems were developed （e.g. USDA）. This trend prompted r. Brewer to publish in 1964 a new morphoanalytical system for fabric analysis, used till the end of last century. Because of some inconsistencies in this approach, a working group of the ISSS published in 1985 a new set of morphoanalytical concepts and associated terminology （Bullock et al.）, in 2003 adapted and extended by Stoops. Several morphosynthetic systems, expressing a complete soil microfabric in a single （compound） term have been proposed, but none was really successful. In 1967 Kubiena introduced the term ＂micromorphometry＂ to name a new branch of micromorphology quantifying the soil fabric, mainly evaluating changes in porosity and structure resulting from soil management. The necessity of dearly defined concepts and terms for fabric analysis of soils and regoliths, even as a need for standardisation of quantitative methods, are discussed in the conclusions.

关键词： micropedology micromorphology fabric analysis Kubiena