Relative higher concentration of gammacerane in Songliao fresh-brackish lacustrine environment is connected with water column stratification caused by event of linking between lacustrine and sea.

松辽盆地淡水-微咸水环境较高含量的伽马蜡烷表明其形成与湖海沟通引起的水体层事件有关。

Gamma ray curve of the Upper Paleozoic in Daniudi gas field can be divided into 4 basic electrofacies types, including bell - shaped, funnel-shaped, box-like and finger - like electrofacies.

大牛地气田上古界自然伽马曲线划为四种基础测井相类型:钟形、漏斗形、箱形和指形。