河南西峡盆地上白垩统高沟组沉积特征与沉积环境  

Sedimentary characteristics and environments of Gaogou Formation of upper Cretaceous in Xixia basin,Henan

作　　者：宋慧波[1] 胡斌[1] 王德有[2] 刘顺喜[1] 高勇[1] 钟明洋[1] 

机构地区：[1]河南理工大学资源环境学院,河南焦作454003 [2]河南省国土资源研究院

出　　处：《石油地质与工程》2008年第4期1-3,6,共4页Petroleum Geology and Engineering

基　　金：国家自然基金项目(40372013);国家重大基础研究前期研究专项(2005CCA05000)

摘　　要：河南西峡盆地上白垩统高沟组为一套半干旱气候条件下形成的冲积扇和辫状河流沉积,本次研究划分出9种沉积类型和3种沉积环境.发现动物遗迹化石共6属10种,均产于泛滥平原沉积及河漫湖泊沉积中,在综合分析其沉积特征的基础上,探讨了研究区内高沟组沉积序列的组成与演化,提出了该组形成的沉积环境模式,说明了恐龙蛋形成的古环境特征。Gaogou Formation of upper Cretaceous in Xixia basin is a set of alluvial fan and braided stream deposits under the semiarid climate condition,in which 9 sedimentary types and 3 kinds of sedimentary environments have been distinguish- ed,and 6 ichnogenus and 10 ichnospecies have been found in the flood plain deposit and very shallow lacustrine deposit. On the basis of synthetic analysis on sedimentary characteris- tics,the composition and the evolution of sedimentary se- quences in Gaogou Formation are discussed,and the sedi- mentary environment model of the Formation is presented, which accounts for the feature of the palaeoenvironment where dinosaur eggs were formed.

关 键 词：西峡盆地 上白垩统 沉积环境 河流沉积 沉积相 恐龙蛋 

分 类 号：TE111.3[石油与天然气工程—油气勘探]