Untitled

nano record further into the early Oligocene, toinclude the critical C13n episode missing in thesurfacesection, a core was drilled in the directvicinity of the quarry section. First correlationsbetween the core and the quarry sectionhaverecently been proposed. In this paper, we usehigh-resolution organic-walled dinoflagellatecyst (dinocyst) analysis to significantly improvecorrelation between the two sections.In addition,we build on earlier studies, and demonstrate thatthe current E/O GSSP criterion, which is basedon the local extinction of the tropical planktonicforaminifera genus Hantkenina represents anisolated event that is not suitable for global correlation.Instead,we argue that selection of theOi-1 event be the main criterion for the determinatingthe E/O boundary, and that this providesamuch better basis for global correlation, Moreover,the Oi-1 is also related to the TA4.3/4.4third order sequence boundary andthe last occurrenceof the dinocyst Areosphaeridium diktyoplokum.Selection of this slightly youngercriterion would place the upperboundary of theclassic Priabonian Stage back in the latest Eocene,and the base of the Rupelian Stage in theearliest Oligocene. Since the proposed correlativeOi-1 event level is not represented in thesurface (quarry) section, but only resides in thecored section atMassignano, a new GSSP siteshould be selected, for example in one of theother central Italian sections that does span C13n.2008040594巴 黎 盆 地 Sparnacian 期 的 沉 积 : 岩 石 地 层 分类 = The Sparnacian deposits of the Paris Basin:Alithostratigraphic classification. ( 英 文 ).Aubry M P; Thiry M; Dupuis C; Berggren W A.Stratigraphy, 2005, 2(1): 65-100As the result of a study integrating lithostratigraphyand biostratigraphy of the Upper Paleocene(Thanetian) and Lower Eocene (Sparnacian-Ypresian)of the Paris Basin, a newlithostratigraphic unit, the Mont Bernon Group,can be formally recognized.The group includesfour formational units: the Mortemer (MortemerLimestone), the Vaugirard (Plastic Clay), theSoissonnais (LigniticClay of Soissons) andEpernay (Lignitic Clay of Epernay) formationsand associated members. An integration ofcharophyte,dinoflagellate cyst and, to a lesserextent, calcareous nannoplankton biostratigraphyallows us to place the succession in an approximate,integratedbiostratigraphic framework.Ourintroduction of a formal lithostratigraphicframework for the Upper Paleocene-Lower Eocenesuccession in the Paris Basincontributes toemphasize the distinctiveness of the Sparnaciandeposits as an independent stratigraphic unit.2008040595中 国 陆 相 中 新 统 通 古 尔 阶 = The TunggurianStage of the Continental Miocene in China. ( 英文 ). Deng Tao; Hou Sukuan; Wang Hongjiang.Acta Geologica Sinica, 2007, 81(5): 709-721The Tunggurian Age was nominated in 1984,and the Second National Commission on Stratigraphyof China formally suggested establishingthe corresponding chronostratigraphic unit, theTunggurian Stage, based on the Tunggurian Agein 1999. The name of this stage comes from alithostratigraphic unit, the Tunggur Formation,andthe stratotype section is located at theTunggur tableland, 15 km southeast of SaihanGobi Township, Sonid Left Banner, Inner Mongolia.The Tunggurian Age is correlated to theAstaracian of the Eur...2008040596印 度 山 脉 中 部 Vityaz 断 裂 带 早 上 新 世 古 海 洋学 = Early Pliocene Paleoceanography of theVityaz Fracture Zone,Central Indian Ridge. ( 英文 ). Guptha M V S; Banerjee R; Mergulhao L P;Banerjee P; Parthiban G; Tewari M. Acta GeologicaSinica, 2007, 81(4): 614-621Planktic foraminifera from the calcareous substrateof a ferromanganese crust in the VityazFracture Zone (VFZ), Central Indian Ridgewere studied to reconstruct the early Pliocenepaleoceanography of this region. Eleven speciesof planktic foraminifera were encountered,among them Globorotalia menardii, Neogloboquadrinadutertrei, Globigerina bulloides andGlobigerinoides tuber are prominent. Predominanceof N. dutertrei in the top 3 cm of the carbonatesubstrate is attributed to an influx of freshwater which eventually triggered their productivityby increasing the nutrient level. The presenceof G. bulloides and G. menardii in significantproportions in deeper layers suggests the prevalenceof open ocean upwelling. The bulk chemicalcompositions of the substrate at differentdepth intervals indicates higher enrichment oftrace metals in the upper sections which couldhave been supplied through oceanic water by thechemical weathering of terrestrial matter duringthe peak of Pliocene Asian monsoon. Thus, it isconcluded that during the early Pliocene the biogeniccomponents of the substrate were distinctlycontributed by both upwelling and productivitytriggered by an influx of fresh wateroriginating from the intensification of the Asianmonsoon during the early Pliocene Period.2008040597埃 及 西 北 El-Dabaa 地 区 中 新 世 - 更 新 世 生 物地 层 学 和 古 生 态 解 释 = Biostratigraphy andpalaeoecological interpretation of the Miocene-Pleistocene sequence at El-Dabaa, northwesternEgypt. ( 英 文 ). Ibrahim M I A; Mansour A M S.180