THERMOLUMINESCENCE BEHABIOR OF QUARTZ IN GRANITIC ROCKS AND EVALUATION OF GEOTHERMAL POTENTIAL

花岗岩中石英的热释光行为及地热潜力评价

• 批准号: 11650956
• 负责人: TSUCHIYA Noriyoshi
• 金额: $ 2.24万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650956/
• 关键词: THERMOLUMINESCENCE; GEOTHERMAL ENERGY; EXPLORATION; PALEO-TEMPERATURE; GEOTHERMAL MANIFESTATION; HEAT FLOW; GEOTHERMAL POTENTIAL; QUARTZ; 石英; 第四紀; 地熱; 格子欠陥; 不純物; 発光波長

The thermoluminescence glow-curve of quartz in volcanic and pyroclastic rocks of the Miocene and Quaternary in the Kakkonda geothermal field was divided into L (low), M (medium) and H (high) peaks in order of increasing temperature. Thermoluminescence emission is independent of stratigraphic boundaries but it is closely related to surface geothermal manifestations. Thermally stimulated processes of thermoluminescence caused by natural annealing occurred in the Quaternary after the eruption of the Tamagawa Welded Tuffs ; radiation storage processes then began, as a consequence of the temperature drop. Thermoluminescence behavior indicates natural temperature manifestations, together with the paleo-temperature history.The H peak was thermally stable compared to the L and M peaks, and the area within which the relative intensity of the H peak is less than 5 % coincides with the surface zone where dominant fluid flow is convective. In addition, L and M peaks indicate that a relatively low-temperature fluid mixes with the hot upflow around the western margin of the ascending flow zone.Thermoluminescence characteristics reflect paleo-temperature history and are related to geothermal fluid flow. Thermoluminescence is an effective exploration technique for evaluating natural temperature manifestations and subterranean heat flow in geothermal systems.

卡孔达地热田中新世和第四纪火山岩和火山碎屑岩中石英的热释光发光曲线按升温顺序分为L（低）、M（中）和H（高）峰。热释光发射与地层边界无关，但与地表地热现象密切相关。热刺激过程的热释光所造成的自然退火发生在第四纪喷发后的玉川焊接凝灰岩;辐射存储过程，然后开始，作为一个结果的温度下降。热释光行为反映了自然温度的表现以及古温度的历史。与L峰和M峰相比，H峰是热稳定的，并且H峰相对强度小于5%的区域与主要流体流动为对流的地表区域相一致。此外，L和M峰表明上升流带西缘附近有温度相对较低的流体与热上升流混合，热释光特征反映了古温度历史，与地热流体流动有关。热释光是评价地热系统中自然温度表现和地下热流的有效勘探技术。

项目成果

N.Tsuchiya and K.Fujino: "Evaluation of Cooling History of the Quaternary Takidani Pluton Using Thermoluminescence"Technique Proceedings World Geothermal Congress 2000. 3939-3944 (2000)

N.Tsuchiya 和 K.Fujino：“利用热释光评估第四纪 Takidani 岩体的冷却历史”技术论文集 2000 年世界地热大会。 3939-3944 (2000)

K.Sekine and N.Tsuchiya: "Development of Microcraks in Granites Clarified by Fluid Inclusion Study : Examples from the Quaternary Takidani Pluton, Japan,"Proceedings World Geothermal Congress 2000. 3871-3876 (2000)

K.Sekine 和 N.Tsuchiya：“通过流体包裹体研究澄清花岗岩中的微裂缝的发展：日本第四纪 Takidani 岩体的例子”，世界地热大会论文集 2000 年。3871-3876 (2000)

N.Tsuchiya,T.Suzuki and K.Nakatsuka: "Thermoluminescence as a New Research Tool for Evaluation of Geothermal Activity of the Kakkonda Geothermal System, Northeast Japan"Geothermics. 29(1). 27-50 (2000)

N.Tsuchiya、T.Suzuki 和 K.Nakatsuka：“热释光作为评估日本东北部 Kakkonda 地热系统地热活动的新研究工具”地热学。

K.Sekine and N.Tsuchiya: "Development of Microcraks in Granites Clarified by Fluid Inclusion Study : Examples from the Quaternary Takidani Pluton, Japan"Proceedings World Geothermal Congress 2000. 3871-3876 (2000)

K.Sekine 和 N.Tsuchiya：“通过流体包裹体研究澄清花岗岩中微裂纹的发展：来自日本第四纪 Takidani 岩体的实例”会议记录世界地热大会 2000 年。3871-3876 (2000)

N.Tsuchiya and K.Fujino: "Evaluation of Cooling History of the Quaternary Takidani Pluton Using Thermoluminescence Technique"Technique Proceeding World Geothermal Congress 2000. 3939-3944 (2000)

N.Tsuchiya 和 K.Fujino：“利用热释光技术评估第四纪 Takidani 岩体的冷却历史”技术论文集 2000 年世界地热大会。3939-3944 (2000)