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| 西伯利亚克拉通东南缘1.84 Ga构造热事件——俄罗斯斯塔诺夫南带南缘混合岩化黑云斜长片麻岩锆石U-Pb年龄和Hf同位素记录 | |
| 引用本文： | 王彦斌,童英,王涛,Andrey Sorokin,韩娟,侯可军.西伯利亚克拉通东南缘1.84 Ga构造热事件——俄罗斯斯塔诺夫南带南缘混合岩化黑云斜长片麻岩锆石U-Pb年龄和Hf同位素记录[J].岩石矿物学杂志,2011,30(5):873-882. |
| 作者姓名： | 王彦斌 童英 王涛 Andrey Sorokin 韩娟 侯可军 |
| 作者单位： | 1. 中国地质科学院地质研究所,北京,100037 2. Regional Geology and Hydrology Division, Amur Research Center of Russian Academy of Sciences, 675006, Blagovestzhenk, Russia 3. 中国地质科学院矿产资源研究所,北京,100037 |
| 基金项目： | 国家自然科学重点基金资助项目(90714006); 中国地质调查局项目(1212011121066 |
| 摘 要： | 对俄罗斯远东腾达(Tydna)斯塔诺夫南带南缘混合岩化黑云斜长片麻岩中锆石进行了U-Pb年龄测定和Hf同位素测试,获得其锆石核部年龄主要为≥2.57、~2.39、~2.33和~2.20 Ga,锆石增生边年龄为1.84 Ga,可靠的最年轻碎屑锆石年龄为~2.20 Ga,表明其原岩沉积时代为古元古代,而不是以往认为的太古宙,混合岩化事件年龄为1.84 Ga。锆石核部εHf(t)值为2.7~-16.2,Hf同位素地壳模式年龄为3.7~2.8 Ga;锆石增生边的εHf(t)值为-7.5~-18.6,峰值为-15,Hf同位素地壳模式年龄为3.6~2.9 Ga。锆石的εHf(t)值基本为负值说明这些岩石主要来自于地壳岩石的部分熔融;Hf同位素两阶段模式年龄的峰值在~3.4 Ga,表明它们可能主要来源于阿尔丹地盾下地壳物质的部分熔融。这些年龄资料将为西伯利亚克拉通东南缘地质构造演化提供重要的年代学制约。 |
| 关 键 词： | 锆石U-Pb年龄 Hf同位素 混合岩化黑云斜长片麻岩 斯塔诺夫 西伯利亚克拉通 俄罗斯 |
| 收稿时间： | 2011/6/28 0:00:00 |
| 修稿时间： | 2011/8/4 0:00:00 |
Recognition of the 1.84 Ga tectono-thermal event in the southeastern margin of the Siberian craton: record from zircon U-Pb dates and Hf isotopes of migmatitic biotite plagioclase gneiss from the southern edge of southern Stanov belt, Tydna, Far East, Russia |
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| WANG Yan-bin,TONG Ying,WANG Tao,ANDREY Sorokin,HAN Juan and HOU Ke-jun.Recognition of the 1.84 Ga tectono-thermal event in the southeastern margin of the Siberian craton: record from zircon U-Pb dates and Hf isotopes of migmatitic biotite plagioclase gneiss from the southern edge of southern Stanov belt, Tydna, Far East, Russia[J].Acta Petrologica Et Mineralogica,2011,30(5):873-882. | |
| Authors: | WANG Yan-bin TONG Ying WANG Tao ANDREY Sorokin HAN Juan and HOU Ke-jun |
| Institution: | WANG Yan-bin1,TONG Ying1,WANG Tao1,ANDREY Sorokin2,HAN Juan1 and HOU Ke-jun3 (1.Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China,2.Regional Geology and Hydrology Division,Amur Research Center of Russian Academy of Sciences,675006,Blagovestzhenk,Russia,3.Institute of Mineral Resources,China) |
| Abstract: | The formation of the Columbian supercontinent at 1.9~1.8 Ga has been a topic of wide interest in recent years.The assemblage of the supercontinent has been recorded in the Siberian craton by the 1.9~1.8 Ga high grade metamorphic belt.The U-Pb zircon geochronological study has gained a new insight into the geological evolution of the southeastern margin of the Siberian craton.Zircons from migmatitic biotite plagioclase gneiss show core-rim textures in cathodoluminescence(CL) image.Core features indicate detr... |
| Keywords: | zircon U-Pb ages Hf isotope migmatitic biotite plagioclase gneiss Stanov Siberian craton Russia |
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