中文摘要：

利用上白垩统秋扒组和古近系高峪沟组泥质岩的微量元素和稀土元素地球化学特征,研究了其物源及恐龙生活时期的古气候环境,结果表明：秋扒组到高峪沟组的源岩年代由新到老反映了源区的揭顶式剥蚀,岩性均以后太古代上地壳长英质岩为主,未经过明显的沉积再旋回,构造背景具有大洋岛弧性质,应以熊耳群火山岩为主;晚白垩世-古近纪源区风化作用总体强烈,古近纪早期有所减弱,综合孢粉资料,晚白垩世栾川地区恐龙应生活在热带-亚热带的湿润-半湿润气候区,古近纪早期气候有变干旱的趋势。该研究对于陆相断陷盆地白垩纪-古近纪（K-E）生物灭绝事件具有重要的理论意义。

英文摘要：

Provenance and paleoclimate are discussed based on the geochemical characteristics of REEs and trace elements of Qiuba Formation（ upper cretaceous） and Gaoyugou Formation（ Paleocene）. The results show that the provenance age from Qiuba formation to Gaoyugou Formation is growing old,reflecting that a exposing top-denudation and the provenance are mainly late Archean crustal felsic rocks and have not been a significant re-deposition cycle. The main tectonic setting is an oceanic island arc,which may be the Xionger volcanic rocks. They also show that the weathering of source area from Late Cretaceous to Paleogene is strong overall,and become weak in the Paleogene. Combining with researches on pollen data,the Cretaceous dinosaurs in Luanchuan area lived in a tropical-subtropical humid-semi-humid climate,and it grew dryer in early Paleogene. The study has an important significance to Cretaceous-Paleogene（ K-E） mass extinction in terrestrial faulted Basin.