【作者】 吴晓伟；

【导师】 李守军；

【作者基本信息】 山东科技大学 ， 古生物学与地层学， 2008， 硕士

【摘要】 在不同时期,不同研究者对鲁西地层分区建立和使用了许多不同的岩石地层单位,使用比较混乱。该地区分布着近东西向大致平行排列的第三纪盆地群,但是一直以来对该地区地层单位的划分都存在很大的争议,这给研究工作带来了很大不便。本文对鲁西地区中、新生代的岩石地层单位进行了讨论,提出了新的划分方案。我们建议在中生代使用坊子组、三台组、蒙阴组、西洼组、固城组这一地层系统,同时建议,废除“汶南(亚)组”和“分水岭(亚)组”,并且在鲁西地层分区不使用鲁东地层分区的“杨家庄组”、“曲格庄组”、“八亩地组”等岩石地层单位。在新生代依据对沉积特征以及地层的分布特点,认为该地区的第三系应该采用官庄群一名,自下而上包括固城组、卞桥组、常路组、朱家沟组和大汶口组。通过对哺乳动物、介形类、轮藻、腹足类和孢粉等化石的研究,官庄群的时代属古新世一早渐新世,固城组的时代为晚白垩世,卞桥组为早古新世,常路组为中、晚古新世至早始新世,朱家沟组为早始新世,大汶口组为中始新世。利用露头区新的划分方案对不同时期、不同单位在覆盖区的钻井地层进行了重新划分,并对钻井及露头区的地层进行了对比,总结了鲁西地区中新生代地层分布特点。从而为鲁西中、新生代地层的发育特征研究奠定了基础。更多还原

【Abstract】 The use of Hthostratigraphic units to the west Shandong province stratigraphic subregion is very chaotic because different researchers establishes and uses different Hthostratigraphic units in different time. Tertiary period basin group lies approximately parallel arrangement along east and west. It is difficult for studying work because Stratigraphic unit’s division has the very great dispute to this area. This article discusses lithostratigraphic units of Mesozoic Era, Cainozoic era to the west Shandong province and then proposes a new division scheme. It is suggested that use Fangzi formation, Santai formation, Mengyin formation, Xiwa formation, Gucheng formation, abate "Wennan formation (sub-formation) ", "Fenshuiling formation (sub-formation) " and does not use some lithostratigraphic units in the west Shandong province, such as "Yanggezhuang formation", "Qugezhuang formation", "Bamudi formation" and so on. Guanzhuang group is suggested to be adopted in Tertiary era according to sedimentary characteristic and the distribution of strata, Cainozoic era. Guanzhuang group includes Gucheng formation, Bianqiao formation, Changlu formation, Zhujiagou formation and Dawenkou formation from bottom to top. After the research of mammal, ostracoda, chareae, gastropod, palynologic fossil and so on, Guanzhuang group pertains Paleocene epoch to early Oligocene epoch, Gucheng formation pertains late Cretaceous, Bianqiao formation pertains early Paleocene epoch, Changlu formation pertains middle-late Paleocene epoch to early Eocene epoch, Zhujiagou formation pertains early Eocene epoch, Dawenkou formation pertains middle Eocene epoch. Well strata of overlay area are redivided and the strata are contrasted of overlay area and outcrop area, using the new division scheme. Finally Mesozoic Era, Cainozoic era strata distributed characteristic is summarized to the west Shandongprovince and this research has laid the foundation.更多还原