地质通报2016，Vol.35Issue(12)：1950-1960,11.
“路易贝贝”产出层位时代及其古环境
The geological age and paleoenviron-ment of Baby Louie-bearing strata
摘要
Abstract
"Baby Louie" dinosaur fossil embryo, located at the bottom of Upper Cretaceous Gaogou Formation in Xixia Basin, was excavated from Zhaoying Village of Yangcheng Township in Xixia County of Nanyang City, Henan Province. Upper Cretaceous strata of Xixia Basin can be divided from bottom to top into Gaogou Formation, Majiacun Formation and Sigou Formation. "Baby Louie"is embryonic skeleton fossil of Macroelongatoolithus xixaensis. Gaogou Formation is rich in dinosaur egg fossils and little dino⁃saur bone fossils as well as a few fossil fragments of bivalve, gastropods, Ostracods, Charophyceae, plant pollen, and plant fossil togeth⁃er with abundant trace fossils. According to geological age of fossils in combination with conformable contact between Majiacun For⁃mation and Gaogou Formation as well as fossil assemblage of Sigou Formation, angular contact between Gaogou Formation and Low⁃er Devonian Nanwan Formation and stratigraphic correlation with surrounding basin layers, the authors hold that geological epoch of Gaogou Formation in Xixia Basin should be Late Cretaceous Coniacian. The lower and middle Gaogou Formation seems to be terrig⁃ enous clastic rocks of semi-arid red continental type molasse-like formation belonging to alluvial fan and braided river sedimentation of intermittent muddy waters, whereas the upper part of Gaogou Formation seems to be alluvial fan and traction current deposit. The horizontal paleo-geographic environment of"Baby Louie"is flat and wide alluvial fan facing south at the alluvial end, which can be classified as alluvial fan facies-fan end subfacies-flowing microfacies.关键词
路易贝贝/高沟组/晚白垩世康尼亚克期/冲积扇/半干旱温热气候Key words
"Baby Louie"/Gaogou Formation/Coniacian of Late Cretaceous/alluvial fan/semi-arid warm climate分类
天文与地球科学引用本文复制引用
潘泽成,徐莉,蒲含勇,贾松海,吕君昌,周世全,常华丽,张海清,杨丽丽..“路易贝贝”产出层位时代及其古环境[J].地质通报,2016,35(12):1950-1960,11.基金项目
河南省国土资源厅项目（批文号豫国土资函[2010]188号）、河南省财政厅项目（批文号豫财环[2015]110号）和国家自然科学基金项目 （）
