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156篇 您的检索式:作者名="Jenkyn"
    题名 作者 年代 出处 被引量
1西藏特提斯喜马拉雅白垩纪中期Cenomanian Turonian期碳同位素偏移显示文摘过去大量关于白垩纪中期CenomanianTuronian期的古海洋及其界线期缺氧事件研究的高分辨率碳氧同位素的实际材料绝大多数都来自深海钻探(DSDP)、大洋钻探(ODP)和欧美的一些较深水盆地.通过对西藏南部地区(位处特提斯洋东南)同一层位高分辨率碳同位素分析,目的在于为CenomanianTuronian古海洋及全球事件的碳同位素响应提供西藏地区的对比材料,并试图就浅海相的变化情况进行探讨.西藏定日和岗巴地区的高分辨率碳同位素分析结果显示,δ13C值在Cenomanian中晚期稳定,CenomanianTuronian界线时期快速高幅正偏,Turonian期持续负偏,这种长期变化趋势在特提斯甚至全球可以对比.深入研究还发现,Turonian中后期存在2个较大幅度的负偏凹陷区,与来自欧洲的相关资料在偏移时间和幅度方面惊人相似.对比分析表明,岗巴地区δ13C值长期变化和短期波动幅度及步调与定日及全球其他地区存在一定差别,幅度差异可能与样品制备和成岩改造有关,步调不一致则可能受生物地层定位的影响.研究区近海-半远洋环境CenomanianTuronian界线时期未出现典型富有机质黑色页岩,说明δ13C值极度正偏与黑色页岩的出现并非一一对应.李祥辉 王成善 Hugh C. Jenkyns 成鑫荣 崔杰 胡修棉 2005地球科学(中国地质大学学报)2005,30,3:8
2Measurement of muscle activity with magnetic resonance elastography显示文摘Guido Heers Thomas Jenkyn M. Alex Dresner Marc-Oliver Klein Jeffrey R Basford Kenton R Kaufman Richard L Ehman Kai-Nan An 2003Clinical Biomechanics2003,,6:2
3Noninvasive muscle tension measurement using the novel technique of magnetic resonance elastography (MRE)显示文摘Thomas R. Jenkyn Richard L. Ehman Kai-Nan An 2003Journal of Biomechanics2003,,12:2
4西藏南部晚白垩世坎潘期碳同位素偏移及其意义显示文摘对西藏南部定日地区特提斯喜马拉雅晚白垩世坎潘期海相沉积进行高分辨率碳氧同位素分析,获得较为丰富的实验数据。分析表明,δ13C值在坎潘期呈现二高二低变化:坎潘早期较低,平均值约1.2‰~1.3‰;坎潘中期持续升高,平均值1.9‰~2.0‰,并形成正偏高原,到剖面196m位置达到最大值约2.3‰;坎潘晚期变低,平均值在1.2‰~1.4‰范围;坎潘末期再一次升高,均值达2.0‰左右。其中,坎潘中期的正偏高原全球对比研究暗示可能与南半球特别是南极大陆高温和高降雨量有关。根据δ13C值偏移幅度和时间跨度,在坎潘早期、中期和晚期识别出三次负偏事件Ⅰ、Ⅱ、Ⅲ,分别对应于有孔虫G.elevata带下部(剖面162~166m)、G.ventricosa带下部(188~192m)和G.ventricosa带-G.stuartiformis带界线(226~230m),时间跨度平均小于0.74Ma,它们显示了与欧洲同期δ13C值偏移事件的可比性和与Haq等全球I型层序低海平面的相关性。李祥辉 H. C. Jenkyns 王成善 胡修棉 赵兵 黄永建 2007地球化学2007,36,3:2
5Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event显示文摘HESSELBO S P GROECKE D JENKYNS H C 2000Nature2000,406,:1
6The early Toareian and Cenomanian-Turonian anoxic events in Europe: comparisons and contrasts 显示文摘JENKYNS H C 1985Geologische Rundschau1985,74,3:1
7Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event 显示文摘Hesselbo S P Grocke D R Jenkyns H C 2000Nature2000,406,:1
8Seawater strontium isotopes, oceanic anoxic events, and seafloor hydrothermal activity in the Jurassic and Cretaceous显示文摘Jones C E Jenkyns H C 2001American Journal of Science2001,301,:1
9The early Toarcian (Jurassic) anoxic event; stratigraphic, sedimentary and geochemical evidence 显示文摘JENKYNS H C 1988American Journal of Science1988,288,:1
10Cretaceous oceanic anoxic events:Cause and consequence 显示文摘Schlanger S O Jenkyns H C 1976Geologie en Mijinbouw1976,55,:1
11Cenomanian- Turonian carbon-isotope stratigraphy recorded by the Ceno manian-Turonian oceanic anoxic event: Correlation and impli cations based on three key locations显示文摘Tsikos H Jenkyns H C Walsworth Bell B 2004Geological Society of London Journal2004,161,:1
12Cretaceous anoxic events: From continents to oceans显示文摘Jenkyns H C 1980Journal of the Geological Society London1980,137,:1
13High tem- peratures in the late Cretaceous Arctic Ocean显示文摘Jenkyns H C Forster A Schouten S 2004Nature2004,432,7019:1
14Geochemistry of oceanic anoxic events显示文摘Jenkyns H C 2010Geochemistry Geophysics Geosystems2010,11,3:1
15Cretaceous oceanic anoxic events: Causes and consequences显示文摘Schlanger S O Jenkyns H C 1976Geologie en Mijn- bouw1976,55,34:1
16Seawater strontium isotopes, oceanic anoxic events, and seafloor hydrothermal activity in the Jurassic and Cretaceous显示文摘Jones C E Jenkyns H C 2001American Journal of Science2001,301,2:1
17Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event显示文摘Hesselbo S P Grocke D R Jenkyns H C 2000Nature2000,406,:1
18Cretaceous oceanic anoxic events:Cause and consequences显示文摘SCHLANGER S O JENKYNS H C 1976Geo Mijnbouw1976,55,:1
19Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event 显示文摘Hesselbo S P Groecke D R Jenkyns H C Bjerrum C J Farrimond P Morgans Bell H S Green O R 2000Nature2000,406,:1
20Carbon and oxygen isotope stratigraphy of the English chalk and Italian Seablia and its paleoclimatic significance 显示文摘Jenkyns H C Gale A S Corfield R M 1994Geology Magazine1994,131,:1
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