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本文简要介绍了松辽盆地晚白垩世青山口组－嫩江组的地层特征，对其生物组合面貌及其岩石地球化学特征进行了分析。在全球板块构造运动和海侵控制作用下，松辽盆地在此期间曾发生过三次全盆地的缺氧事件，沉积了三套巨厚层的暗色泥岩、油页岩、页岩，为松辽盆地后期油气的生成提供了丰厚的油源母岩。盆地缺氧事件的发生，导致了古湖泊生物的三次变革，形成了具有其独特特色的生物群组合。
This paper briefly introduced the stratigraphic features of Late Cretaceous Qingshankou-Nenjiang Formation in the Songliao Basin, and analyzed its biological assemblage and its petrogeochemical characteristics. Under the action of global tectonic movement and transgression control, three anomalous anomalies occurred in the whole basin during the Songliao Basin. Three sets of thick mudstone, oil shale and shale were deposited, The late generation of oil and gas in the basin provided rich source rocks. The occurrence of anoxic events in the basin led to three revolutions in the ancient lakes and formed a group of biomes with their unique characteristics.