| 山东埠后古火山机构显微构造研究 |
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| 引用本文： | 黄洁真
,刘辅臣.山东埠后古火山机构显微构造研究[J].地球科学,1985(4). |
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| 作者姓名： | 黄洁真 刘辅臣 |
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| 作者单位： | Wuhan College of Geology，Wuhan 430074 |
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| 摘 要： | 埠后古火山机构由早白垩世陆相火山岩和次火山岩组成,铅、锌、铜、硫矿与后者有关。为了圈定火山通道的大致位置,在熔岩中采制定向切片,进行显微构造分析。通过变形、压密、阻挡、涡流等显微构造标志确定流动方位;利用长条状晶体的长轴方向确定流动线理。根据流动方位和流动线理圈出古火山口位置,进而指出在环火山颈的大断裂一侧,可能具区域找矿前景。
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| 关 键 词： | 山东省 古火山机构 显微构造 流动方位 流动线理 |
A MICROSTRUCTURAL RESEARCH IN A PALAEOVOLCANO OF BUHOU. SHANDONG PROVINCE |
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| Huang Jiezhen Liu Fuchen.A MICROSTRUCTURAL RESEARCH IN A PALAEOVOLCANO OF BUHOU. SHANDONG PROVINCE[J].Earth Science-Journal of China University of Geosciences,1985(4). |
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| Authors: | Huang Jiezhen Liu Fuchen |
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| Abstract: | The Buhou Palaeovolcano is made up of volcanics and subvolcanics of Early Cretaceous continental volcanic cycle, leadzine-copper and sulfur ores are related to the subvolcanics. In order to delineate the approximate position of the volcanic pipe,oriented rock slices were prepared for lava and their microstructaral analyses were made. The flow orientation were determined by microstructural indicators such as deformation,compaction, obstruction and the whirling of lava flows; and the flow lineations were determined by the elongation of lath-shaped crystals. According to the flow orientations and lineations, the position of the palaeovolcanic crator i's determined, and it is indicated that on one side of the great fracture surrounding the volcanic vent, there is possibility of expanding the perspective search for mineral deposits in that area. |
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| Keywords: | Shandong province palaeovolcano microstructure flow orientation flow lineation |
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