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通过对芬兰湾第四纪沉积断面声学探测和地质钻探结果发现与波罗的海盆地各发育阶段相适应的4种结构杂岩体。结构杂岩体的形成受结构和冰川动力作用控制，还受海底地形制约。水动力作用对与海相有关的新杂岩体的形成起着决定性作用，因为这些作用增强了海底侵蚀作用，并形成了复
Through the acoustic exploration and geological drilling of the Quaternary sedimentary section in the Gulf of Finland, four structures with complex structures corresponding to different developmental stages of the Baltic Sea Basin are found. The formation of structural complex rock mass is controlled by the structure and glacier dynamics and is also restricted by the seafloor topography. Hydrodynamic processes play a decisive role in the formation of marine-related new complex bodies because these actions enhance submarine erosion and form complex