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Updated: Sep 17, 2025
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Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
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Probing the world's largest oceanic plateau: from making to collision
Xiaodian Jiang1, Zheng-Xiang Li2,3, Wei Gong1
1Ocean University of China, China.
National Science Review
|June 27, 2025
Summary
The Ontong Java Plateau crust is thick due to deep magma processes, not just surface lava flows. This deep magma intrusion and underplating built the plateau.
Area of Science:
- Geology
- Geophysics
- Plate Tectonics
Background:
- The Ontong Java Plateau is one of the largest oceanic plateaus on Earth.
- Its formation mechanism remains a subject of scientific debate.
Purpose of the Study:
- To elucidate the primary processes responsible for the construction of the Ontong Java Plateau's crust.
- To differentiate the contributions of deep magma processes versus surface volcanism.
Main Methods:
- Analysis of seismic and gravity data.
- Geochemical analysis of rock samples.
- Geodynamic modeling of crustal formation.
Main Results:
- The crust of the Ontong Java Plateau is exceptionally thick.
- Deep magma intrusion and underplating were the dominant processes.
- Flood basalts played a minor role in the plateau's overall crustal volume.
Conclusions:
- The formation of the Ontong Java Plateau was primarily driven by extensive deep-seated magmatic activity.
- Understanding these processes provides insights into large igneous province formation.
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