| 苏鲁超高压变质带中国大陆科学钻探主孔(CCSD-MH)榴辉岩中发现金刚石 |
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| 引用本文： | 张仲明 杨经绥 戎合 HU JinZhu SU JinFu MAO HoKuang.苏鲁超高压变质带中国大陆科学钻探主孔(CCSD-MH)榴辉岩中发现金刚石[J].岩石学报,2007,23(12):3201-3206. |
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| 作者姓名： | 张仲明 杨经绥 戎合 HU JinZhu SU JinFu MAO HoKuang |
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| 作者单位： | 1. 国土资源部大陆动力学重点实验室,中国地质科学院地质研究所,北京,100037
2. Geophysical Laboratory and Center for High Pressure Research Carnegie Institute of Washington, USA |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
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| 摘 要： | 苏鲁榴辉岩中除了早前发现的一粒金刚石外,最近又发现了6粒,它们具有基本相似的外形和大小,但其晶体结构与普通自然界金刚石和人工合成金刚石存在一定差别.金刚石具有异常X-射线衍射峰以及有磁铁矿的包裹体等特征,表明可以排除这些金刚石是人造或被外来样品混染的可能性.金刚石的再发现,证实苏鲁榴辉岩的形成压力可以达到4GPa以上,并且为大别和苏鲁两个超高压变质带的对比提供了一个重要标志.金刚石的异常晶胞参数和X-Ray异常峰的出现有可能与超高压变质作用有关,但需要实验岩石学研究证实.
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| 关 键 词： | 金刚石 榴辉岩 中国失陆科学钻探 苏鲁 超高压变质作用 |
| 修稿时间： | 8/3/2007 12:00:00 AM |
Discovery of diamond in eclogite from the Chinese Continental Scientific Drilling Project Main Hole (CCSD-MH) in the Sulu UHPM belt |
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| ZHANG ZhongMing,YANG JingSui,RONG He,HU JinZhu,SU JinFu,MAO HoKuang.Discovery of diamond in eclogite from the Chinese Continental Scientific Drilling Project Main Hole (CCSD-MH) in the Sulu UHPM belt[J].Acta Petrologica Sinica,2007,23(12):3201-3206. |
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| Authors: | ZHANG ZhongMing YANG JingSui RONG He HU JinZhu SU JinFu MAO HoKuang |
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| Abstract: | Six grains of diamond have been discovered in eclogite from the CCSD-MH in the Sulu UHPM belt.They have similar morphology and size(about 0.5mm)but minor difference in crystal structure with general natural or synthetic diamond.Uncommon X-ray diffraction peaks of the diamond and inclusion of magnetite within it indicate that they were from synthesized or contaminated sample.This discovery has further proved over 4GPa pressure obtainable while Sulu eclogite forming and provided important evidence in comparison between the Dabie and Sulu ultrahigh pressure metamorphic belts.Unusual crystal structure of the diamond may be caused by ultrahigh pressure metamorphism and thus further experimental study is needed. |
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| Keywords: | Diamond Eclogite CCSD Sulu UHPM |
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