Untitled

松 辽 盆 地 晚 白 垩 世 青 山 口 组 介 形 类 生 物 地 层序 列 = Ostracod Biostratigraphy of the LateCretaceous Qingshankou Formation in theSongliao Basin. ( 英 文 ). Zhang Zhili; Liu Zhenwen;Wang Baichang; Zhang Ying; Ye Dequan.Acta Geologica Sinica, 2007, 81(5): 727-738An ostracod biostratigraphic study was performedon 425 samples from the composite geologicalsection constructed by using cores takenfrom five selected wells drilled in the Late CretaceousQingshankou Formation in the Songliaobasin.A total of 19 ostracod zones are establishedin the formation,of which 3 are newlyestablished and 3 are revised.The 19 ostracodzones are described in detail.This study providesa basis for the detailed stratigraphic division andcorrelation of the Qingshankou Formation and t...2008040552根 据 底 栖 有 孔 虫 建 立 的 东 欧 生 物 省 上 白 垩 统地 壳 内 带 生 物 地 层 第 一 部 分 赛 诺 曼 阶 -康 尼 亚 克 阶 = Infrazonal biostratigraphy of theUpper Cretaceous in the East European provincebased on benthic foraminifers, Part 1: Cenomanian-Coniacian.( 英 文 ). Beniamovski V N.Stratigraphy and Geological Correlation, 2008,16(3): 257-266A chart of infrazonal biostratigraphic subdivisionof Cenomanian-Coniacian deposits in theEast European paleobiogeographic province isbased on distribution of benthic foraminifers.The suggested chart characterizes successivetrend of changes in ecologic assemblages of benthicforaminifers and morphologic evolution ofcertain agglutinated (Gaudryina, Bolivinopsis,Heterostomella, Arenobulimina, Ataxophragmium,Ataxoorbignyna, Marssonella) and secretory(Globorotalites, Valvulinera, Gyroidinoides,Stensioeina, Osangularia, Berthelina, Pseudovalvulineria,Gavelinella, Cibicides, Praebulimina,Reussella) foraminiferal genera. Thechart includes 7 zones and 13 subzones, most ofwhich are recognizable over the vast territoryfrom the Mangyshalk to southern Baltic areas. Itis correlated with the acknowledged ammonoidand inoceramid zonations. Five stadia of taxonomicchanges in foraminiferal assemblages,which are substantiated in this work, show thatprincipal biotic events took place in the mid-lateCenomanian, during the Cenomanian-Turonianand early-middle Turonian transitions, in the lateTuronian, and at the early-middle Coniacianboundary time. A chart of infrazonal biostratigraphicsubdivision of Cenomanian-Coniaciandeposits in the East European paleobiogeographicprovince is based on distribution ofbenthic foraminifers. The suggested chart characterizessuccessive trend of changes in ecologicassemblages of benthic foraminifers and morphologicevolution of certain agglutinated(Gaudryina, Bolivinopsis, Heterostomella,Arenobulimina, Ataxophragmium, Ataxoorbignyna,Marssonella) and secretory (Globorotalites,Valvulinera, Gyroidinoides, Stensioeina,Osangularia, Berthelina, Pseudovalvulineria,Gavelinella, Cibicides, Praebulimina, Reussella)foraminiferal genera. The chart includes 7 zonesand 13 subzones, most of which are recognizableover the vast territory from the Mangyshalk tosouthern Baltic areas. It is correlated with theacknowledged ammonoid and inoceramid zonations.Five stadia of taxonomic changes in foraminiferalassemblages, which are substantiatedin this work, show that principal biotic eventstook place in the mid-late Cenomanian, duringthe Cenomanian-Turonian and early-middle Turoniantransitions, in the late Turonian, and atthe early-middle Coniacian boundary time.2008040553俄 罗 斯 萨 拉 托 夫 地 区 西 北 部 上 白 垩 统 沉 积第 二 部 分 年 代 地 层 和 地 质 史 问 题 = UpperCretaceous deposits in the northwest of Saratovregion, Part 2: Problems of chronostratigraphyand regional geological history. ( 英 文 ). Olfer’evA G; Beniamovski V N; Vishnevskaya V S et al..Stratigraphy and Geological Correlation, 2008,16(3): 267-294Problems of geochronological correlation areconsidered for the formations established in thestudy region with due account for data on theMezino-Lapshinovka, Lokh and Teplovka sectionsstudied earlier on the northwest of theSaratov region. New paleontological data areused to define more precisely stratigraphicranges of some stratigraphic subdivisions, toconsider correlation between standard and localzones established for different groups of fossils,and to suggest how the Upper Cretaceous regionalscale of the East European platform canbe improved. Considered in addition are paleogeographicenvironments in the study regionduring the Late Cretaceous epoch and principalstages of the regional geological evolution.2008040554俄 罗 斯 侏 罗 系 第 二 届 全 俄 会 议 : 地 层 和 古 地理 问 题 = The Second All-Russia Conference onthe Jurassic System of Russia: Problems ofStratigraphy and Paleogeography. ( 英 文 ). ZakharovV A; Rogov M A; Dzyuba O S; Kiselev DN. Stratigraphy and Geological Correlation,2008, 16(3): 343-3462008040555斯 堪 的 纳 维 亚 西 部 和 东 格 陵 兰 中 生 代 = Themesozoic of western Scandinavia and East168