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日本海中的日本海盆与大和(Yamato)海盆的年代测定依据三种独立的方法:盆地沉积物的地层研究;年代一深度时比;年代一热流值对比.经过沉积载荷校正的日本海盆及大和海盆的基底深度,与年代受到较好约束的、西太平洋其它边缘海的基底深度进行了比较.在日本海盆,由年代一深度对比和由年代一热流位衬比所得出的年代估算位非常接近.但是,估算大和盆地的年代时,这三种方法之间出现了差异.基底深度法得出的年代范围是6一。Ma;沉积地层法得出的大约是10Ma:而热流资料显示的则为30Ma到刚刚超过10Ma,这一差异可被解释为厚的晚第三纪火山碎屑堆积的影响,在一些地震反射记录上,这些火山碎清岩相当于具有3.skm/s的折射速度的声波基底.日本海盆和大和海盆年代的最后估算值相同,其范围是30Ma或稍老一点、到15Ma或稍微年轻一点.
Chronological dating of the Japanese basin and the Yamato basin in the Sea of Japan is based on three independent methods: stratigraphic study of basin sediments; age-depth ratio vs. age-heat flux values. Corrected Japanese sediments and Yamato basin Compared with the depth of the basement of the other marginal seas in the western Pacific that was well-constrained in the age, and in the Japanese basin, the depth-contrast by age-1 and the age-estimated bit by age-heat-flow liner are much closer than those obtained by the age. However, there is a difference between the three methods in the estimation of the age of the Daihe basin, and the basal-depth method yields a period of six years. Ma; Sedimentary formation method is about 10Ma: the heat flow data shows 30Ma to just over 10Ma, this difference can be interpreted as thick late Paleozoic volcanic debris accumulation in some seismic reflection records , These volcanic rocks are equivalent to acoustic substrates with refraction velocities of 3. skm / s The final estimates for the age of the Japanese basin and the Yamato basin are the same, ranging from 30 Ma or slightly older to 15 Ma or slightly younger.