山东国土资源2024，Vol.40Issue(10)：18-25,8.DOI:10.12128/j.issn.1672-6979.2024.10.003
胶莱盆地青岛地区恐龙蛋地球化学特征及其意义
Geochemical Characteristics and Significance of Dinosaur Eggs in Qingdao Area of Jiaolai Basin
摘要
Abstract
There are abundant dinosaur egg fossils in Qingdao area of Jiaolai basin.In this paper,through comparison and analysis on geochemical characteristics of dinosaur eggshells and surrounding rocks in Laixi area and Jiaozhou area,the survival environment and extinction of dinosaurs have been discussed.The con-tent of CaO in the dinosaur egg fossils in Laixi area and Jiaozhou area is 51.7％～54.6％,the content of SiO2 is 0.27％～3.31％,the content of Al2O3 is 0.14％～0.88％,the content of MgO is 0.36％～0.71％,and the content of Na2O is 0.04％～0.14％.The mineral composition is dominated by carbonate.The total amount of rare earth elements ∑REE is(5.87～117.99)× 10-6,∑LREE is(5.10～97.28)× 10-6,∑HREE is(0.77～20.71)× 10-6,∑LREE/∑HREE is 3.97～6.65,which is light rare earth enrichment type.The partitioning curve shows a right-leaning double'V'curve,and Ce,Eu elements have obvious negative a-nomalies.In the trace element spider diagram,the large ion lithophile elements Rb,Sr,Ba are enrich-ment,high field strength elements Nb,Zr,Hf,Ti are loss.Comparing with the analysis of the element content of the surrounding rock,the living environment of the dinosaurs in Jiaolai basin is mainly dry and humid.Comparing with the analysis of the element content of the surrounding rock,the dinosaurs in Jia-olai basin lived in a dry environment,with intermittent humid.In addition,the dinosaur eggs show an en-richment of Sr,Ba and Y elements,and a deficit of Ce element,which are not favorable to the laying and hatching of the eggs,and have an important effect on the reproduction and survival of the dinosaurs.关键词
恐龙蛋/地球化学特征/胶莱盆地/青岛地区Key words
Dinosaur eggs/geochemical characteristics/Jiaolai basin/Qingdao area分类
生物科学引用本文复制引用
王丽娟,任天龙,黄永波,朱学强,张贵丽,张学松..胶莱盆地青岛地区恐龙蛋地球化学特征及其意义[J].山东国土资源,2024,40(10):18-25,8.基金项目
山东省自然资源厅省级地质勘查项目"胶莱盆地中部白垩纪古生物化石调查研究及保护"(鲁勘字[2019]54号) （鲁勘字[2019]54号）
"山东省1:5万夏格庄、灵山幅区域地质调查"(鲁勘字[2015]1号) （鲁勘字[2015]1号）
