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12篇 您的检索式:作者名="Peter Cawood"
    题名 作者 年代 出处 被引量
1山西五台山-恒山地区晚太古-早元古代若干关键地质问题的再认识:单颗粒锆石离子探针质谱年龄提出的地质制约显示文摘大量准确度很高的单颗粒锆石迅谱 (SHRIMP)年代学数据表明 ,五台山 -恒山绿岩带形成于 2 50 0 Ma之前 ,五台山 -恒山绿岩带形成后即与较老的阜平块体拼合。因此 ,该过程中有大量火山 ,深成活动及变质作用 ,是一次重要的造山运动。在 1 80 0 Ma之前 ,本区还经历了一次明显的构造热事件 ,主要表现为在地壳较深水平上大规模的冲断作用 ,使原来为不同地壳水平的块体处于同一地壳水平。本文还对原五台群下部层位板峪口组和金岗库组的归属及铁堡不整合面提出了新的看法。王凯怡 郝杰 Simon Wilde Peter Cawood 2000地质科学2000,35,2:76
2Petrogenesis and tectonic implications of Early Cretaceous andesitic-dacitic rocks,western Qinling(Central China):Geochronological and geochemical constraints显示文摘40Ar/39Ar and zircon U-Pb geochronological and whole-rock geochemical analyses for the Laozanggou intermediate-acidic volcanic rocks from the western Qinling orogenic belt,Central China,constrain their petrogenesis and the nature of the Late Mesozoic lithospheric mantle.These volcanic rocks yield hornblende or whole-rock 40Ar/39Ar plateau ages of 128.3-129.7 Ma and zircon U-Pb age of131.3±1.3 Ma.They exhibit SiO2 of 56.86-66.86 wt.%,K2 O of 0.99-2.46 wt.%and MgO of 1.03-4.47 wt.%,with Mg#of 42-56.They are characterized by arc-like geochemical signatures with significant enrichment in LILE and LREE and depletion in HFSE.All the samples have enriched Sr-Nd isotopic compositions with initial 87Sr/86Sr ratios ranging from 0.7112 to 0.7149 andεNd(t)values from 10.2 to 6.3.Such geochemical signatures suggest that these volcanic rocks were derived from enriched lithospherederived magma followed by the assimilation and fractional crystallization(AFC)process.The generation of the enriched lithospheric mantle is likely related to the modification of sediment-derived fluid in response to the Triassic subduction/collision event in Qinling orogenic belt.The early Cretaceous detachment of the lithospheric root provides a reasonable mechanism for understanding the petrogenesis of the Laozanggou volcanic sequence in the western Qinling orogenic belt.Feifei Zhang Peter A. Cawood Yunpeng Dong Yuejun Wang 2019Geoscience Frontiers2019,10,4:3
3Geology and timing of mineralization at the Cangshang gold deposit, north-western Jiaodong Peninsula, China显示文摘Xiao’ou Zhang Peter A. Cawood Simon A. Wilde Ruqi Liu Hailin Song Wen Li Lawrence W. Snee 2003Mineralium Deposita2003,,2:1
4Tectonothermal history of the basement rocks in the western zone of the North China Craton and its tectonic implications显示文摘Zhao Guochun Wilde Simon A Cawood Peter A 1999Tectonophysics1999,310,:1
5Metamorphism of basement rocks in the Central Zone of the North China Craton:implicatiom for Paleoproterozoic tectonic evolution显示文摘Zhao Guochun Cawood Peter A Wilde Simon A 2000Precambrian Research2000,103,:1
6Archean blocks and their boundaries in the North China Craton:lithological,geochemical,structural and P-T path constraints and tectonic evolution显示文摘Zhao Guochun Wilde Simon A Cawood Peter A 2001Precambrian Research2001,107,:1
7Archean blocks and their boundaries in the North China Craton: lithological, geochemical, structural and P – T path constraints and tectonic evolution显示文摘Guochun Zhao Simon A. Wilde Peter A. Cawood Min Sun 2001Precambrian Research2001,,1:1
8Zircon SHRIMP U–Pb geochronology of potassic felsic intrusions in western Yunnan, SW China: Constraints on the relationship of magmatism to the Jinsha suture显示文摘Yong-jun Lu Robert Kerrich Peter A. Cawood T. Campbell McCuaig Craig J.R. Hart Zheng-xiang Li Zeng-qian Hou Leon Bagas 2011Gondwana Research2011,,2:1
9Granitoid evolution in the Late Archean Wutai Complex, North China Craton显示文摘Simon A. Wilde Peter A. Cawood Kaiyi Wang Alexander A. Nemchin 2004Journal of Asian Earth Sciences2004,,5:1
10Contrasting modes of supercontinent formation and the conundrum of Pangea显示文摘J. Brendan Murphy R. Damian Nance Peter A. Cawood 2008Gondwana Research2008,,3:1
11Amalgamation of the North China Craton Key issues and discussion 显示文摘J Zhao Guochun Peter A Cawood ct al 2012Precambrian Re- search2012,22,:1
12Precambrian geology of China显示文摘Guochun Zhao Peter A. Cawood 2012Precambrian Research2012,,:1
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