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塔里木盆地是我国最大的沉积盆地,也是我国石油工业的重要战略接替地区,因此塔里木盆地油气形成与演化研究具有十分重要的意义.塔里木盆地发育了多期地质热事件,这些盆地地质热事件直接影响了盆地油气形成和演化.作者采用~(40)Ar-~(39)Ar快中子活化技术对盆地火山岩进行~(40)Ar/~(39)Ar坪谱年龄研究,获得了塔里木盆地火山岩的~(40)Ar/~(39)Ar年龄,查明了本区构造热事件的地质年代,并通过Ar在热事件中的逸散程度恢复样品遭受热历史过程,在此基础上探讨了盆地的构造演化及与油气生成、演化的关系.1 盆地火山岩~(40)Ar/~(39)Ar年龄谱特征~(40)Ar/~(39)Ar坪年龄谱不仅能够很好地反映岩石形成的年龄,而且能很好地记录岩石形成以后所经历的各种地质热事件.因此,塔里木盆地火山岩的~(40)Ar/~(39)Ar坪年龄谱的研究能很好地确定盆地地质热事件的历史.
The Tarim Basin is the largest sedimentary basin in China and is also an important strategic successor of the petroleum industry in our country. Therefore, it is of great significance to study the formation and evolution of oil and gas in the Tarim Basin. The Tarim Basin has developed multiple geothermal events that directly affect the geological thermal events The formation and evolution of oil and gas in the basin have been studied by using ~ (40) Ar- ~ (39) Ar fast neutron activation technique to study the ~ (40) Ar / ~ (39) Ar dating of volcanic rocks in the basin. (40) Ar / ~ (39) Ar ages, the geologic age of tectonic thermal events in this area was identified and the thermal historical process of the samples was restored by the escaped degree of Ar in the thermal events. On the basis of this, The tectonic evolution of the basin and its relation with hydrocarbon generation and evolution.1 The age spectrum of ~ (40) Ar / ~ (39) Ar volcanic rocks in the basin ~ (40) The Ar / ~ (39) Ar plate age spectrum not only reflects well The age of rock formation and the various geological thermal events experienced after rock formation are recorded well.Therefore, the study of ~ (40) Ar / ~ (39) Ar plateau ages of volcanic rocks in Tarim Basin can be well identified History of geothermal thermal events in the basin.