Coesite inclusions in zircon from gneisses identified by laser Raman microspectrometer in ultra-high

来源 :Chinese Science Bulletin | 被引量 : 0次 | 上传用户:panmandy
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The mineral inclusions in zircon from gneisses in ultra-high pressure (UHP) zone of the Dabie Mountains were identified by using a laser Raman microspectrometer. Coesite occurs as inclusions in zircons from all types of gneiss. Other important minerals, such as jadeite, omphacite, aragonite, barite, and anhydrite were also found as inclusion minerals. These discoveries indicate that ( i) gneissic country rocks had metamorphosed at the same time as the enclosed eclogites; and (ii) SO4-2 -bearing fluids were presentin the UHP metamorphic process, which is manifested by occurrence of barite and anhydrite coexisting with coesite. The mineral inclusions in zircon from gneisses in ultra-high pressure (UHP) zone of the Dabie Mountains were identified by using a laser Raman microspectrometer. Coesite occurs as inclusions in zircons from all types of gneiss. Other important minerals, such as jadeite, omphacite , aragonite, barite, and anhydrite were also found as inclusion minerals. Both discoveries were present in the UHP metamorphic process, which is manifested by occurrence of barite and anhydrite coexisting with coesite.
其他文献
本文作者根据尼古拉池(Nikuradse)的试验数值及格伯莱因(Gebelein)的意见,关于勃兰特混和长表示式中比例因数k值在管流断面中并不严格保持一常数,提出表示k值的二项新假定,而
本文通过对美国著名的外语强化基地——明德大学中文暑校在中文教学方面的经验考察,总结出明德中文署校在教学理念方面的实践性、阶段目标的明确性、反复性和渐进性四个特点,
加大宣传力度。森防宣传工作一直没有引起各级森防部门的重视。为了让全社会都来了解、关注森防工作森防部门,我们必须加大对森防工作的力度,让人们认识到森防工作的重要性,
10月1日,第53届台湾电影金马奖提名公布,《七月与安生》一举揽下7项提名。周冬雨凭借安生一角入围影后。  情商与真诚  对周冬雨而言,拍摄《七月与安生》是在恰好的年纪诠释了一个恰好的故事。她在这部戏中扮演了家庭、成绩都不尽如人意的女孩安生,放浪形骸,又纤细敏感,像刺猬一样外刚内柔。而马思纯扮演的七月则是外人眼中的乖宝宝、优秀生,从不肯踏出小城一步。戏中两个女孩相互依靠、相互羡慕、相互伤害,共同描
我国目前的船舶上,对于橡胶尾轴承,主要只在某些军用舰艇和少数小型民船上应用。应用情况之所以如此,我们认为:这很大程度是由历史条件和习惯所造成。基于船舶采用橡胶尾轴承
翻译实践成果丰硕的许渊冲在翻译理论研究方面颇有心得并独树一帜,提出“三美”、“创优”论等翻译思想,有其创新意义,但有较大局限性。在概括许渊冲的翻译主张和肯定其创新
本论文针对留学生的课外学习行为展开调查。调查涉及课余学习动机、学习规划、学习时间、学习内容、学习方式、学习效果等七个方面。调查结果反映了留学生课余学习行为的基本
根据翁文波先生提出的逻辑斯蒂 (Logistic)旋回模型推导了预测油田采出程度的关系式 ,同时 ,提出了该模型的广义形式。逻辑斯蒂旋回模型的关系式及其广义形式都可以预测油田
To search for more better sensitizer of organic solar cell, a series of multidentate squaraines (Sq1~6) were synthesized, the structures were determined by elem
目的 :探讨热性惊厥患儿外周血T淋巴细胞免疫功能的变化。方法 :应用APAAP法检测 82例热性惊厥患儿、40例上呼吸道感染患儿及 40例正常小儿T淋巴细胞亚群、CD2 5抗原在自然状