Journal of Mineralogy and Petrology · 2005 · 29 citations · 0 references
Natural SciencesEarth SciencesGeologyGeochemistryPaleoclimatologySedimentologySediment AnalysisSediment CompositionSedimentary EnvironmentsSedimentary GeochemistrySedimentary PetrologySedimentary RocksAbundance DistributionRift Basin EvolutionRift Basin StructureSedimentary Basin GeochemistrySedimentary Iron GeochemistrySedimentary Rock CompositionSedimentary Trace Element GeochemistrySedimentological Analysis
Dongying depression is a rift basin characterized by faulting in the north and overlaping in the south and shaped like an asymmetrical dustpan.Cyclic variations of the abundance of major elements and trace elements are obvious.The distribution of elements and variations of elements ratios and combination reveal the evolutional history of sedimentary environments in a certain extent.In this paper,the sedimentary environments of the Es_4 in the Southern Ramp of Dongying depression are studied by analyzing the elements abundance of Fe,Mn,Ca,Sr,ratios of Fe/Mn,Sr/Ba,Sr/Ca,Mg/Ca and,variations of carbon and oxygen isotopes.The results indicate paleoclimate,paleosalinity,paleolake level and paleoproductivity show cyclic variations in the period of Shasi sedimentation.