Multiple-Geological Events of Ancient Lithospheric Mantle Beneath <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on">North China</st1:place> Craton: as Inferred from Peridotite Xenoliths in Kimberlite<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

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han; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 2" class=MsoNormal>Multiple-Geological Events of Ancient Lithospheric Mantle Beneath namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />North China Craton: as Inferred from Peridotite Xenoliths in Kimberlitenamespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

详细信息

责任者：Lu Fengxiang (Faculty of Earth Science ; China University of Geosciences ; Wuhan 430074 ; China)
刊名：Acta Petrologica Sinica
出版年：2010
卷期：26(11)
关键词：岩石圈 ; lithosphere ; 地幔 ; mantle ; 金伯利岩 ; kimberlite ; 橄榄岩 ; peridotites ; 华北地区 ; North China
页码：p.3177-3188
图表：5 illus., 6 tables, 45 refs.
分类号：0400
issnNo：ISSN1000-0569
isbnNo：CN11-1922/P

摘要

hDivSummary name="EnDivSummary">Two pieces of serpentinized garnet peridotite mantle xenoliths with sheared-deformation texture entrained in kimberlite from Mengyin have been studied. In this paper "reverse evolution" trend of mantle component is called. It may be possible that the peridotite-melt reaction not only occur in Mesozoic-Cenozoic but also in ancient lithospheric mantle even in whole mantle evolution history. Compared with published data for ages relative to mantle,the ages of Py, Py1s and Py2s may have estimably>3.8Ga, 2.5Ga/1.4~_¹.3Ga, and 0.9~0.7Ga respectively. The age of another carbonated peridotite xenolith with sheared/deformation texture sampled from Fuxian kimberlite may be as same as Py2.