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The studies uranium deposit occurs in a geothermally abnormal area. It has the following four features: 1. Uranium mineralization is observed in a certain temperature zone. 2. The uranium deposit occurs in an area characterized by relatively low but highly varying radioactivity in a regionally high radioactive field. 3. Uranium closely coexists with cubic pyrite of hot water origin. 4. Pitchblende is characteristic of hot water origin. This paper focuses on the relationship between ground hot waters and uranium mineralization. Uranium in the deposit is considered to have come from the host rocks, The possible explanation of the formation of this uranium deposit is that uranium was first leached out of the host rocks by ground hot waters and then transported to where uranium enrichment and deposition were favoured, forming uranium deposit under certain conditions. Based on this explanation, this uranium deposit is believed to be the product of hot water activity in the regionally geothermal abnormal zone. 相似文献
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在γ测井理论和资料解释工作中,有效质量吸收系数是不可缺少的基本参数。过去不少研究者对该系数的测定产生了极大兴趣。1957年等利用饱和模型中心点的γ辐射强度来确定矿石的有效质量吸收系数,其结果为0.028±0.003厘米~2/克。六十年代初,和又利用薄矿层γ测井曲线在矿层内的面积与曲线下全面积的比值来确定矿石的有效质量吸收系数,实测结果为0.033厘米~2/克。国内有关 相似文献
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本文研究了An(219Rn)的野外现场测量技术,提出了原地测量法和桶中测量法.列举了在已知矿床上实测的一些结果,讨论了该技术的应用前景. 相似文献
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ESR定年:一种确定脆性断层活动年龄的方法原理与应用 总被引:16,自引:0,他引:16
在浅层低温环境中,脆性断层活动难以生成新的变质矿物,断层的准确活动年龄就难以确定。但在浅层断层活动中,往往伴生有同期生成的石英脉,对石英脉采用热活化电子自旋共振(ESR)测年,能够确定石英脉的生成年龄,从而能提供断层活动的年龄。如果断层带中发育有多期石英脉,通过测定还能提供断层多次活动的年龄。以雪峰山2条断裂带为例,使用ESR定年方法获得了202.3~60.6 Ma的地质年龄,并探讨了2条断裂带的演化与区域构造活动的关系,最后对ESR测年的可信性与使用条件进行了讨论。 相似文献