...油气构造环境；断裂带；CO2气藏成因 [gap=1070]ds : radon gas; isotopic characteristics; natural gas; geological significance; oil-gas structural environment; fault zone; genesis of the CO2 gas accumulation ..
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由于盆地长期处于相对稳定的大地构造环境，这就为油气的生成、聚集、保存提供了有利的地质条件。
As it has long been in relatively stable tectonic setting, it provides the favourable geologic conditions for oil-gas generation, accumulation and preservation.
地层是一切地质问题的基础，地层的划分直接影响着对盆地构造演化、沉积环境甚至对全盆地含油气远景的认识。
The classification of strata has a great effect on the knowledge about structural evolution, sedimentary environment and even evaluation of hydrocarbon potential in a basin.
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