Experiments on Dehydration-Melting of the Khondalite Series in the Northern Segment of Helan Mou

来源 :Chinese Journal of Geochemistry | 被引量 : 0次 | 上传用户:mark_johnson
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
Based on the experiments on dehydration-melting of solid samples of Al-rich gneiss (H029) and biotite granulitite (H013), the fugacities of O 2, H 2O and H 2 have been calculated. It is recognized that the fugacities of O 2, H 2O and H 2 vary regularly, but the fugacity of H 2O shows a tendency of abrupt increasing at about 700℃ and 800℃. According to the above fact, the melting mechanism of biotite can be well documented. Under relatively low temperatures (<750℃), part of the water can be liberated and induce plagioclase to melt, which may mark the beginning of migmatization. At high temperatures (>800℃), biotite can be dissociated and a larger amount of water can be released, which would result in a bigger degree of melting, hence leading to the formation of granitic magma. Based on the experiments on dehydration-melting of solid samples of Al-rich gneiss (H029) and biotite granulite (H013), the fugacities of O 2, H 2O and H 2 have been calculated. It is recognized that the fugacities of O 2 , H 2O and H 2 vary regularly, but the fugacity of H 2O shows a tendency of abrupt increasing at about 700 ° C. and 800 ° C. According to the above fact, the melting mechanism of biotite can be well documented. <750 ° C), part of the water can be liberated and induce plagioclase to melt, which may mark the beginning of migmatization. At high temperatures (> 800 ° C), biotite can be dissociated and a larger amount of water can be released, which would result in a bigger degree of melting, hence leading to the formation of granitic magma.
其他文献
本文结合前人的各项研究成果,先说明大纲的整体情况,再提出改进的建议,以供后续修正的参考。大纲注重核心化素质、重视实用性课程、立足实践性模式和强调多元化评估,都是值得
Karst aquifers supply a significant fraction of the world’s drinking water. These types of aquifers are alsohighly susceptible to pollution from the surface w
A GaN-based light-emitting diode (LED) with reflective current blocking layer (CBL) underneath p-electrode pad and backside hybrid reflector was fabricated and
近年来 ,随着鼠类增多 ,斑疹伤寒有明显上升趋势 ,并且临床表现不典型 ,易被误诊。为了提高对本病的认识 ,现将我科 1 995年 3月~ 1 999年 1 0月收治的 55例小儿斑疹伤寒分析
基因芯片在肺癌研究中用于检测癌组织与正常组织基因表达的差异、肺癌基因表达谱,癌基因产生突变的检测确定,测序分析,癌细胞耐药基因的检测等。 Gene chips in lung cancer
“就好了”是一种指强烈希望某虚拟事件为真的祈愿成分,既可用于已然事件,也可用于未然事件。该成分具有强对话特征,包括外显对话和内心对话两种形式,不能用为转述句。来源上
患者女 ,14个月。因右面颊部被犬咬伤于 1996年 9月 2 6日入院。病史 ,病儿于 1996年 9月 2 5日 8时许 ,从邻居家 6岁小女孩的怀中滑落 ,随即被家犬咬伤右侧面颊部 ,致大面积
目的观察激素替代治疗 (HRT)对绝经后妇女子宫肌瘤的影响。方法阴道超声测量 2 6例服用利维爱 (利维爱组 )和 2 7例服用倍美力加安宫黄体酮 (倍美力组 )共 5 3例合并子宫肌瘤
The fact that the photoluminescence properties of quantum dots are always strongly influenced by the environment limits the scope of further progress in the fie
1960年Arias及Garther等人首先报道了新生儿高胆红素血症与母乳喂养的关系。现将我院1993年5月~1999年6月收治的72例新生儿母乳性黄疸作一临床分析。 1 临床资料 1.1 一般资