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第一届亚洲植物染色体学术讨论会

作者： Geum Sook Do Bong Bo Seo maki yamamoto Go Suzuki Yasuhiko Mukai Laboratory of Plant Molecular Genetics Division of Natural Science Osaka Kyoiku University4-698-1 Asahigaoka Kashiwara Osaka 582-8582 Japan Department of Biology Kyungpook National University Taegu 702-701 ROK Kansai Women’ s College 3-11-1Asahigaoka Kashiwara Osaka 582-0026 Ianan Laboratory of Plant Molecular Genetics Division of Natural Science Osaka Kyoiku University4-698-1 Asahigaoka Kashiwara Osaka 582-8582 Japan Laboratory of Plant Molecular Genetics Division of Natural Science Osaka Kyoiku University4-698-1 Asahigaoka Kashiwara Osaka 582-8582 Japan

＜正＞ The constitutive heterochromatin of Allium cepa has been characterized using PCR, C-banding and fluorescence in situ hybridization （FISH） techniques. Three kinds of repeated DNA sequences （named pAc072, pAc073 and pAc074） were characterized in Allium cepa by FISH analyses using random amplified fragment as probe. Especially, the 314-bp tandemly repeated DNA sequence of the clone pAc074 is partially homologous to the satellite DNA se-

关键词： Constitutive heterochromatin Fluorescence in situ hybridization Tandemly repeated DNA sequence Allium cepa

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A prolonged granitoid formation in Saglek Block,Labrador:Zonal growth and crustal reworking of continental crust in the Eoarchean

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Geoscience Frontiers 2017年第2期8卷 355-385页

作者： Tsuyoshi Komiya Shinji yamamoto Shogo Aoki Keiko Koshida Masanori Shimojo Yusuke Sawaki Kazumasa Aoki Shuhei Sakata Takaomi D.Yokoyama Kenshi maki Akira Ishikawa Takafumi Hirata Kenneth D.Collerson Department of Earth Science and Astronomy Graduate School of Arts and SciencesThe University of TokyoTokyo 153-8902Japan Department of Earth and Planetary Sciences Tokyo Institute of Technology2-12-1 OokayamaMeguroTokyo 152-8551Japan Laboratory for Planetary Sciences Kyoto UniversityKitashirakawa OiwakechoKyoto 606-8502Japan School of Earth Sciences The University of QueenslandBrisbaneQueenslandAustralia KDC Consulting 33 Cramond StWitstonQld 4051Australia

The Archean continental crusts account for ca.20% of the present volume,but the thermal history of the Earths＇ mantle suggests much more continental crusts were formed in the early *** the Archean continental crust underwent severe metamorphism,it is important to avoid influence by the later thermal *** carried out a comprehensive geochronological work of Cathodoluminescence（CL） observation and U-Pb dating of zircons from orthogneisses and supracrustal rocks over the Saglek Block to obtain their protolith *** zircons were classified into three domains of core,mantle and rims,and the cores were further classified into three groups of inherited,altered and zoned cores based on the zonation on the CL *** estimated the protolith ages from Pb-Pb ages of the zoned-cores of zircons with low U *** made a detailed sketch of a small outcrop in ***＇s Harbour South（SJHS） area,and classified the orthogneisses and mafic enclaves into seven generations based on the geologic *** first and second generations comprise mafic rocks and lack magmatic *** conducted CL imaging and U-Pb dating of zircons from the third,sixth and seventh generation of the orthogneisses to estimate the protolith ages at 3902 L 25,3892 ± 33 and 3897 ± 33 Ma for each,supporting the presence of the over 3.9 Ca Iqaluk *** geological occurrence that the mafic rocks occur as enclaves within the 3.9 Ga Iqaluk Gneiss indicates that they are the oldest supracrustal rocks in the *** geochronological and geological studies show the Uivak Gneiss is quite varied in lithology and age from 3.6 to 〉3.9 Ga,and tentatively classified into six groups based on their *** oldest Uivak Gneiss components including the Iqaluk Gneiss are present around the SJHS area,and the orthogneisses become young as it is *** lines of evidence of overprinting of younger granitoid on older granitoid in small outcrops and geological-map scale as well as presence of in

关键词： Eoarchean Geochronology Uivak Gneiss Iqaluk Gneiss Continental recycling The oldest rocks

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