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在那丹哈达地区采集了中三叠世红色硅质岩样品，古地磁分析测试结果表明，该岩样的磁性特征与日本西南美浓地区同时代硅质岩具有相似性，反映了二者是同源同构造环境下的产物。依据沉积地层组合和古地磁数据，那丹哈达和日本美浓地区原为同一地体，而且三叠纪以来均存在大规模北向位移。同时，古地磁数据还表明了日本海是约在８０Ｍａ，相当于晚白垩世开始扩张的，致使那丹哈达与日本美浓两地体相互分离
The Middle Triassic red chert was collected from Nadahat area. The paleomagnetic analysis results show that the magnetic characteristics of the lithofacies are similar to those of the contemporaneous chert in the Northwestern part of Japan, reflecting that the two are The same product under the same structure of the environment. Based on the sedimentary stratigraphic assemblages and paleomagnetic data, Nahadhata was originally from the same area as the Meinung area of Japan, and large-scale northward displacements have occurred since Triassic. At the same time, paleomagnetic data also show that the sea of Japan is about 80Ma, equivalent to the beginning of the Late Cretaceous expansion, resulting in that Naha Hadid and Japan Mino two bodies separated from each other