现代鲕粒工厂特征及对深时研究的启示OA北大核心CSTPCD

[Significance]The formation and preservation of large-scale oolites in marine environments are valuable tools in climate and environmental evolution studies,and also hold considerable importance as petroleum reservoirs.However,traditional studies on oolites have focused primarily on their depositional sequences,patterns and spatial distribution,almost overlooking the dynamic processes of ooid shoal accumulation,burial and diagenesis,as well as the influence of environmental controls on their development.[Progress]This study aims to address this gap by a comprehensive analysis of typical ooid factories(rimmed shelves and ramps)in modern marine environments.It ex-amines their producers,composition,distribution,construction process,relationship with other carbonate factories and the physical,chemical and biological factors influencing their development.It was found that the key limiting fac-tors on the development of ooid factories include strong turbulent water conditions,high carbonate mineral satura-tion,and effective active-stationary stage transitions.Additionally,the developmental environment and scale of these factories are determined by their specific depositional backgrounds.[Conclusions and Prospects]From a carbonate factory perspective,this study provides important insights into the initiation-flourishing-decline processes of large-scale ooid factories,and offers multidimensional evidence for evaluating their value in oil and gas exploration.Fur-thermore,it provides new insights for exploring the deep-time environment and predicting future changes on carbon-ate depositional systems.