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50篇 您的检索式:作者名="Wemmer"
    题名 作者 年代 出处 被引量
1K-Ar测年法在确定沉积岩成岩时代中的应用——以鄂尔多斯盆地为例显示文摘根据伊利石K-Ar测年法研究,确定鄂尔多斯盆地存在两期与构造运动有关的成岩作用事件:即与早期燕山运动有关的侏罗纪(170—160Ma)和与晚期加里东运动有关的志留-泥盆纪(420-370Ma)成岩作用时代。为了揭示碎屑物质对K-Ar年龄的影响和伊利石成岩作用的机制,本文提出了一个通过观察K-Ar年龄随深度变化的趋势来进行判断的模式。在K-Ar年龄小于地层时代的条件下,K-Ar年龄与深度呈正相关,或者很相近的K-Ar年龄与深度变化无关均标志着没有或很少有碎屑物质的影响;同时,前者指示逐渐埋藏条件下的成岩作用,而后者则反映短暂的热事件引起的成岩作用事件。赵孟为 Hans Ahrendt Klaus Wemmer 1996沉积学报1996,14,3:22
2鄂尔多斯盆地志留-泥盆纪和侏罗纪热事件——伊利石K-Ar年龄证据显示文摘利用伊利石K-Ar测年法,结合伊利石结晶度分析,首次在鄂尔多斯盆地确定出两期不同时代热事件。晚三叠世和晚二叠世<0.2μm粒级的岩石样品的K-Ar年龄(159-173Ma)反映了与燕山运动有关的伊利石化年龄,指示有一期中侏罗世的热事件;其<2μm粒级的K-Ar年龄(210-308Ma)则被解释为碎屑物和自生伊利石的混合年龄。中寒武世<0.2μm和<2μm粒级的岩石样品K-Ar年龄(368Ma与419Ma)对应于北秦岭加里东褶皱带变质作用与最早期花岗岩侵入的时代(380-420Ma),表明在志留-泥盆纪发生了一期热事件。赵孟为 Hans Ahrendt Klaus Wemmer Hans-Jürgen Behr 1996地质学报1996,70,2:22
3Contemporaneous assembly of Western Gondwana and final Rodinia break-up:Implications for the supercontinent cycle显示文摘Geological,geochronological and isotopic data are integrated in order to present a revised model for the Neoproterozoic evolution of Western Gondwana.Although the classical geodynamic scenario assumed for the period 800-700 Ma is related to Rodinia break-up and the consequent opening of major oceanic basins,a significantly different tectonic evolution can be inferred for most Western Gondwana cratons.These cratons occupied a marginal position in the southern hemisphere with respect to Rodinia and recorded subduction with back-arc extension,island arc development and limited formation of oceanic crust in internal oceans.This period was thus characterized by increased crustal growth in Western Gondwana,resulting from addition of juvenile continental crust along convergent margins.In contrast,crustal reworking and metacratonization were dominant during the subsequent assembly of Gondwana.The Rio de la Plata,Congo-Sao Francisco,West African and Amazonian cratons collided at ca.630-600 Ma along the West Gondwana Orogen.These events overlap in time with the onset of the opening of the Iapetus Ocean at ca.610-600 Ma,which gave rise to the separation of Baltica,Laurentia and Amazonia and resulted from the final Rodinia break-up.The East African/Antarctic Orogen recorded the subsequent amalgamation of Western and Eastern Gondwana after ca.580 Ma,contemporaneously with the beginning of subduction in the Terra Australis Orogen along the southern Gondwana margin.However,the Kalahari Craton was lately incorporated during the Late Ediacaran-Early Cambrian.The proposed Gondwana evolution rules out the existence of Pannotia,as the final Gondwana amalgamation postdates latest connections between Laurentia and Amazonia.Additionally,a combination of introversion and extroversion is proposed for the assembly of Gondwana.The contemporaneous record of final Rodinia break-up and Gondwana assembly has major implications for the supercontinent cycle,as supercontinent amalgamation and break-up do not necessarily represent alternating episodic processes but overlap in time.Sebastián Oriolo Pedro Oyhantcabal Klaus Wemmer Siegfried Siegesmund 2017Geoscience Frontiers2017,8,6:13
4Silurian-Devonian and Jurassic Thermal Events in the Ordos Basin, China: Indications from K-Ar Dating on Illites显示文摘In the Ordos basin, two distinct thermal events of different ages have been identified for the first time by means of K-Ar dating combined with illite crystallinity analysis. For the Late Triassic and Late Permian samples, the K-Ar ages of the < 0.2μm fractions (159-173 Ma) reflect an illitization age related to the Yanshanian movement and indicate a short thermal event in the Middle Jurassic; the K-Ar ages of the <2 μm fractions (210-308 Ma) are interpreted as mixed ages of detrital material and authigenic illites. The K-Ar ages of both < 0.2μm and < 2μm fractions of a Middle Cambrian sample (368 Ma and 419 Ma) correspond to the ages of the metamorphism and earliest granite intrusion in the northern Caledonian Qinling fold zone (380-420 Ma) and show a thermal event during Silurian-Devonian time.Hans Ahrendt Klaus Wemmer Hans-J rgen Behr 1996Acta Geologica Sinica(English Edition)1996,70,4:2
5Mechanism of cytoplasmic pH regulation in hylx)xic maize root lips and its role in survival under hypoxia显示文摘Roberts J K M Callis J Wemmer D 1984Proc:Natl Acad Sci USA1984,81,:1
6Comparative ethology of the large-spotted gemet (Genetta tigrina) and some reared viverrds显示文摘Wemmer C M 1977Smithsomian Contributions to Zoology1977,239,:1
7A longitudinal study of patients with venous malfomations:documentation of a negligible hanorrhage risk and benign natural history显示文摘Naff NJ Wemmer J Hoenig Rigamonti K 1998Neu- rology1998,50,:1
8Victims' rights and the International Criminal Court Perceptions within the Court Regarding the Victims' right to Partici- pate显示文摘JO - ANNE Wemmers 2010Leiden Journal of International Law2010,,2:1
9Regulation of cytoplasmic and vacuolar pH in maize root,tips under different experimental conditions显示文摘ROBERTS J K M WEMMER D RAY P M JARDETZKY O 1982Plant Physiol1982,69,:1
10Fruits rhinoceros eat : dispersal of Trewia nudiflora( Euphorbiaceae ) in lowland Nepal 显示文摘Dinerstein E Wemmer C M 1988Ecology1988,69,6:1
11Stable fluorescent complexes of double-stranded DNA with bisintercalating asymmetric cyanine dyes:properties and applications显示文摘RYE H S YUE S WEMMER D E 1992Nucleic Acids Res1992,20,11:1
12Stable fluorescent complexes of double-stranded DNA with bis-intercalating asymmetric cyanine dyes:properties and applications显示文摘RYE H S YUE S WEMMER D E 1992Nucleic Acids Res1992,20,:1
13Chicken ScFvs and Bivalent ScFv - CH Fusions Directed against HSP65 of Mycobac- terium boris 显示文摘Wemmer S Mashau C Fehrsen J 2010Biologicals2010,38,:1
14U-Pb and Sm-Nd dating on ophiolitic rocks of the Song Ma suture zone (northern Vietnam): Evidence for upper Paleozoic paleotethyan lithospheric remnants显示文摘Vuong N V Hansen B T Wemmer K 2012Journal of Geodynamics2012,3,:1
15Targeting the minor groove of DNA 显示文摘Wemmer D E Dervan P B 1997Curr Opin Struet Bio11997,7,3:1
16Three-dimensional structure of soybean trypsin/chymotrypsin Bowman-Birk inhibitor in solution 显示文摘Werner MH Wemmer DE 1992Biochemistry1992,31,:1
17Native state hydrogen exchange study of suppressor and pathogenic variants oftransthyretin显示文摘Liu K Kelly JW Wemmer DE 2002J Mol Biol2002,320,4:1
18查看详情显示文摘H S Rye S Yue D E Wemmer 0,,:1
19Targeting the minor groove of DNA 显示文摘Wemmer DE Dervan PB 1997Curr Opin Struct Biol1997,7,:1
20The Lancang River Zone of southwestern Yunnan, China: A questionable location for the active continental margin of Paleotethys显示文摘Heppe K Helmcke D Wemmer K 2007Journal of Asian Earth Sciences2007,30,5:1
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