Several Geochemical Indicators of the West Coast of Bohai Sea
详细信息   
摘要

Several geochemical indexes were examined to find out the paleoenvironment evolution of the Holocene stratotype section on the west coast of Bohai Sea. The analytical results are: 1) paleoclimate index showing that paleotemperature values are in positive proportion to Rb/Sr ratios; 2) the oxidation-reduction indexes showing that Fe2+/Fe3+ ratios and Corg/P2O5 ratios have great convergent; 3) the indexes of transformation environment of marine and terrestrial facies showing that Sr/Ba ratios are in positive proportion to B/Ga ratio, with a correlation coefficient of +0.946; and 4) using optimal segmentation method and statistical analysis, this study classify three stages: cold climate stages from I to V, oxidation-reduction zone S from I to VI, and fluctuating graph of sea level.

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