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5篇 您的检索式:作者名="Paul Martin HOLM"
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1苏鲁造山带中部晚中生代裂谷作用与深部动力机制——来自灵山岛的记录显示文摘灵山岛科学钻探井的最新成果表明,晚中生代苏鲁造山带内部发育莱阳、青山两期裂谷作用.通过野外踏勘、科学钻探、岩芯描述、锆石年代学与全岩地球化学的研究,探明了裂谷发育时代,揭露了裂谷充填序列,并探讨了其演化动力学机制.灵山岛地区莱阳-青山群地层序列呈现两期不同性质的裂谷充填序列:莱阳群(147~125Ma),主要由深水重力流沉积与少部分火成岩夹层组成;青山群下部(125~119Ma),不整合覆盖于下伏地层之上,主要由陆上火山岩与浅水陆相沉积地层组成.两期裂谷演化过程中构造环境发生了重要转变:裂谷莱阳期处于NNW-SSE向伸展拉张的构造环境,呈现出“先伸展开裂,后岩浆作用”的被动裂谷特征,在125Ma左右经历了一个短暂的NWW-SEE向挤压,结束了被动裂谷阶段,之后转变为NW-SE向强烈伸展环境,演化为青山期火山弧盆.裂谷火成岩多为钾玄岩至高钾钙碱性系列的粗面安山质与粗面质/粗面英安质熔岩或火山碎屑岩,伴有数套煌斑岩夹层与一套流纹岩.火成岩地球化学特征指示其应为地幔来源的派生熔体,且其地幔源区受到交代作用或岩浆形成过程受到了地壳混染,裂谷发育演化过程中伴随着巨量的岩石圈减薄.古太平洋板块侏罗纪低角度俯冲弱化了苏鲁造山带加厚岩石圈地幔,晚侏罗至早白垩世发生回卷,岩石圈地幔发生了重力垮塌被拆沉,导致莱阳期被动裂谷的发育.之后古太平洋板块高角度俯冲、回卷与后撤速率达到了高峰,区域强烈伸展,软流圈物质上涌引起区域快速隆升,导致被动裂谷夭亡.下地壳受上涌软流圈物质加热发生部分熔融,形成的长英质熔体上涌侵位并强烈喷发,裂谷青山期演化为火山弧盆,表现出了一定主动裂谷的特性.综上,灵山岛地区(苏鲁造山带内部)发育莱阳期被动裂谷与青山期火山弧盆(具主动裂谷性质),是从古特提斯构造域向环太平洋构造域转换的记录.苏鲁造山带岩石圈地幔拆沉与软流圈物质上涌是两期裂谷发育、演化的深部动力学机制,裂谷发育演化受到古太平洋板块俯冲、回卷与后撤的远程控制.周腾飞 周瑶琪 Nina SØAGER Paul Martin HOLM 张振凯 王俊 梁钊 穆宏玉 程燕君 刘菲菲 王淼 张悦 张卉 辜洋建 董诗绘 赵汉杰 李曼洁 陈扬 刘燕姿 2022中国科学:地球科学2022,52,10:3
2Late Mesozoic rifting and its deep dynamic mechanisms in the central Sulu orogenic belt: Records from Lingshan Island显示文摘The Lingshan Island scientific drill confirms that two episodes(Laiyang period and Qingshan period) of rifting developed in the central Sulu orogenic belt(SOB) in Late Mesozoic. With a set of methods including fieldwork, drilling, core logging, zircon U-Pb dating and whole rock geochemistry applied, the age, the depositional sequence and the deep dynamic mechanisms of rift evolution were unraveled. The stratigraphic sequence of the Laiyang-Qingshan Groups on Lingshan Island was composed of two different rifting sequences:(1) Laiyang Group(147–125 Ma), which consists of deep-water gravity flow deposits with interlayers of intermediate volcanic rocks;and(2) Lower Qingshan Group(125–119 Ma), which unconformably overlies the former sequence and contains subaerial volcanic deposits and terrestrial deposits. The tectonic environment changed during the evolution of these two episodes of rifting: the rift was in a NNW-SSE extensional environment in the Laiyang period and showed the typical passive rifting character that “lithospheric extension and rifting preceded volcanism”. The passive rifting period was ended by a short WNW-ESE compression at about 125 Ma. After that, the tectonic environment transferred to a strong NW-SE extensional environment and the rifting evolved into a volcanic arc basin in the Qingshan period. The igneous rocks are shoshonitic to high-K calc-alkaline trachyandesites to trachytes with a few intercalated lamprophyres and a rhyolite.The geochemical characteristics of the igneous rocks indicate that they are mantle-derived melts with a metasomatized mantle source and/or crustal contamination. In addition, an increased thinning of the lithosphere happened during the rifting episodes.The low-angle subduction of the Paleo-Pacific plate in the Jurassic weakened the thickened SOB lithospheric mantle. The rollback of the subducting plate started in late Jurassic to early Cretaceous, and the SOB lithospheric mantle was delaminated synchronously because of the gravity collapse. Thus, this caused passive rifting in the Laiyang period. Thereafter, the rollback and trench retreat of the high-angle subducting Paleo-Pacific plate would have achieved its climax, resulting in the strong regional extension. Passive rifting was ended by the crustal uplift caused by asthenospheric upwelling beneath the rift. The lower crust was heated by the upwelling asthenosphere and partially melted to form felsic melts, which were emplaced upwards and erupted explosively. The rift evolved into a volcanic arc basin in the Qingshan period and showed some characteristics of active rifting. Above all, a passive rifting in the Laiyang period and a volcanic arc basin in the Qingshan period developed successively in the Lingshan Island area(the central SOB). This records the transfer of the study area from the Paleo-Tethys tectonic domain to the circum-Pacific tectonic domain. The delamination of SOB lithospheric mantle and the upwelling of asthenospheric material were the deep dynamic mechanisms driving the development and evolution of two rift episodes. Additionally, the rift development was controlled remotely by the subduction of the Paleo-Pacific plate.Tengfei ZHOU Yaoqi ZHOU Nina SФAGER Paul Martin HOLM Zhenkai ZHANG Jun WANG Zhao LIANG Hongyu MU Yanjun CHENG Feifei LIU Miao WANG Yue ZHANG Hui ZHANG Yangjian GU Shihui DONG Hanjie ZHAO Manjie LI Yang CHEN Yanzi LIU 2022Science China Earth Sciences2022,65,9:3
3Antagonists of the human CCR5 receptor as anti-HIV-1 agents. Part 4: synthesis and structure–Activity relationships for 1-[ N -(Methyl)- N -(phenylsulfonyl)amino]-2-(phenyl)-4-(4-( N -(alkyl)- N -(benzyloxycarbonyl)amino)piperidin-1-yl)butanes显示文摘Paul E. Finke Bryan Oates Sander G. Mills Malcolm MacCoss Lorraine Malkowitz Martin S. Springer Sandra L. Gould Julie A. DeMartino Anthony Carella Gwen Carver Karen Holmes Renee Danzeisen Daria Hazuda Joseph Kessler Janet Lineberger Michael Miller William 2001Bioorganic & Medicinal Chemistry Letters2001,,18:1
4IgG Antibodies against Deamidated Gliadin Peptides for Diagnosis of Celiac Disease in Patients with IgA Deficiency显示文摘Villalta Danilo Tonutti Elio Prause Christian Koletzko Sibylle Uhlig H Holm Vermeersch Pieter Bossuyt Xavier Stern Martin Laass Martin W Ellis Julia H Ciclitira Paul J Richter Thomas Daehnrich Cornelia Schlumberger Wolfgang Mothes Thomas 2010Clinical Chemistry2010,,:1
5Sr, Nd and Pb isotopic composition of in situ lower crust at the Southwest Indian Ridge: results from ODP Leg 176显示文摘Paul Martin Holm 2002Chemical Geology2002,184,:1
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