A detailed petro-logical study indicates that most of the zigzag clasts were generated by in-situ quench fragmentation of andesitic magma.

• 研究表明，该熔积岩的角砾为岩浆遇水后快速淬火、裂解的产物，铁硅质组合为海底喷气沉积形成的含铁建造；