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- Title
Modern Ooid Factories and Clues to Understanding Their Deep-time Analogs.
- Authors
LI Fei; LI YaLan; WANG ZengJun; LI YangFan; LI Ying
- Abstract
[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 examines 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 factors on the development of ooid factories include strong turbulent water conditions, high carbonate mineral saturation, 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. Furthermore, it provides new insights for exploring the deep-time environment and predicting future changes on carbonate depositional systems.
- Publication
Acta Sedimentologica Sinica, 2024, Vol 42, Issue 2, p371
- ISSN
1000-0550
- Publication type
Article
- DOI
10.14027/j.issn.1000-0550.2024.006