中文摘要：

胶东诸城发育了世界罕见的晚白垩世中晚期恐龙化石集群埋藏点，主要分布在诸城市东南的库沟、恐龙涧、西见屯和臧家庄。本文通过薄片鉴定、电子探针、常量、微量和稀土元素分析等方法技术，系统研究了诸城恐龙骨骼化石微观特征与地球化学特征，分析了恐龙骨骼埋藏成岩过程，厘定4个化石集群埋藏层的相对层位关系和骨骼沉积物来源方向，探讨了恐龙死亡的可能原因。研究表明，研究区恐龙骨骼化石主要矿物成分为磷灰石和方解石，也零星含有Fe、Mn、BaSO4及SiO2等矿物成分；骨骼化石和围岩主量、微量与稀土元素分析显示，CaO、P2O5、F、REE、Y、Sr和Ba、U高值且远高于围岩，其中CaO、P2O5、F、Sr和Ba的高值是由于原始骨骼组成中这些元素背景含量高，而REE、Y及U的异常高值是成岩过程中吸附作用所致；骨骼中Rb、Th、Nh、SiO2、Al2O3、TiO2、Zr、Hf含量低于围岩是由于它们属于亲沉积碎屑元素，都来自母岩的风化产物；骨骼化石中稀土元素表现为轻稀土富集型，稀土配分模式与上地壳相似，并具有Eu轻微正异常和Ce负异常特点；研究认为，骨骼与围岩较高的Sr、Ba含量及稀土元素异常系源于干旱气候与氧化环境的浅埋藏成岩作用；依据不同化石点骨骼中磷灰石矿物与方解石矿物组成的对比、骨骼与围岩主量元素分子风化率指数及REE、HREE、LREE与（La／Yh）N、（Ce／Yh）N和（La／Sm）N、δEu、δCe等参数的对比，研究区4个集群埋藏的恐龙化石层相对层位关系由下至上分别厘定为库沟、西见屯、恐龙涧与臧家庄；骨骼围岩沉积物源主要来自下伏青山群火山岩与莱阳群沉积岩的剥蚀产物；研究区上白垩统红土崖组下部不到100m厚的地层中恐龙化石异地集群埋藏层的多次出现表明，集群埋藏不是一个简单孤立事件，恐龙的死亡也可能受制于干旱气?

英文摘要：

Kugou, Konglongjian, Xijiantun and Zangjiazhuang of Zhucheng, Eastern Shandong, China are famous for the world-class dinosaur bone beds of the early Late Cretaceous. Based on analyses by thin section and Electronic Probe Mieroanalyzer （EPMA） and the analyses of Major element, rare-earth element （ REE ） and trace element, the paper systemically studies the micro structure and geochemical characteristics of dinosaur bones, analyzes the taphonomy and diagenetic process of dinosaur bones, clarifies the interrelationships of the four bone beds stratigraphically and the resource provenance direction of dinosaur bones and discusses the possible facts causing the death of the dinosaurs. Apatite and calcite are the main mineral composition of dinosaur bones in study areas, with a small amount of odd Fe, Mn, BaSO4 and SiO2, etc. Analysis the principle and Major element, REE and trace element of the dinosaur bones and the host matrix shows that the values of CaO, P205, F, REE, Y, Sr, Ba and U in the former are much higher than in the latter. The high value of CaO, P2O5, F, Sr and Ba in dinosaur bones may have been resulted from a high background value in life; whereas the abnormal high values of REE, Y and U may have been caused by postmodern absorption during the diagenetic process. Since Rb, Th, Nb, SiO2, A12O3 , TiO2 , Zr and Hf belong to sedimentophile clastics elements from the weathering products of parent rocks, they occupy less in dinosaur bones than the host rock. REE of dinosaur bones belong to the enriching type of light rare earth element （LREE）, similar to that of the upper crust, with a slight positive anomaly of Eu and a passive anomaly of Ce. Our study suggests that shallow burying diageneses under a draught climate and oxide environment may have caused the high content of Sr, Ba and REE such as Eu and Ce in dinosaur bones and the host rock. Based on comparisons between apatite and calcite, rock, and the correlation of many elements, such molecular weathering ratios between dinosaur bones and the