HYDROTHERMAL QUARTZ MICROTEXTURES AND DEPOSITIONAL PROCESSES REVEALED BY SEM-CL IMAGING
HYDROTHERMAL QUARTZ MICROTEXTURES AND DEPOSITIONAL PROCESSES REVEALED BY SEM-CL IMAGING
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SEM-CL 成像揭示的水热石英微结构和沉积过程
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
K. Tsuchiya
中科院分区：
文献类型：
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作者：
G. Bignall;K. Tsuchiya
来自新西兰Te Kopia地热田的热液石英的扫描电子显微镜-化学发光成像，辅之以流体包裹体分析，揭示了晶体生长、溶解和叠印的复杂历史，这是其他观测技术所看不到的。在195个储集层中，CL-暗色石英(以真面体生长带为特征)成长为充满流体的空间，至少在现今地表以下m处。Paeroa断层上的运动为流体在系统中的运动提供了通道，导致了进一步的石英沉淀，但扫描电子显微镜-化学发光证据也表明，石英被部分溶解，后来被CL光亮的石英叠加和填充。
SEM-CL imaging of hydrothermal quartz from the Te Kopia geothermal field (New Zealand), complemented by fluid inclusion analysis, has revealed a complex history of crystal growth, dissolution and overprinting, unseen by other observational techniques. CL-dark quartz (characterised by euhedral growth zones) grew into fluid-filled space, at least m below the present ground surface, in a 195 reservoir. Movement on the Paeroa Fault provided pathways for fluids to move through the system, which resulted in further quartz precipitation, but SEM-CL evidence also shows that the quartz was partly dissolved, with later overprinting and void-filling by CL-bright quartz.