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Report No.
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Creation of the 3-dimensional geological structure model of the inland reversed fault belt in the Japanese Islands

Miwa, Atsushi*; Sasaki, Tatsuya*; Hara, Hiroshi*

The purpose of this study is conducted for the purpose of considering as the basic data for evaluating the influence range by dislocation movement. The contents of studies are consideration by the investigation technique of collection arrangement of drilling data, collection arrangement of active fault underground structure, informational GIS-izing, creation of a 3-dimensional geological structure model, and the influence range of an active fault belt. Informational collection carried out for the national active fault in Japan, and the dislocation which refers to the result and is set as the object of informational GIS-izing and a 3-dimensional geological structure model was made into Senya active fault dislocations in the rim of the east of the Yokote basin faults in northeast Japan.In the 3-dimensional geological structure model, the data of the interpretation of sectional view of the seismic reflecting method, a geologic map, active fault information, and the inversion tectonics of northeast Japan were made reference, and it created on the scale of 1/50,000. As a result of verifying the accuracy of the model as compared with a gravity inquiry result, the error of base rock form is less than 1km. However, base rock form is the accuracy of the synthetic model after the back-arc basin formative period after 15Ma In order for the influence range of an active fault belt to verify from now on, data, such as airborne geophysics and gravity of the accuracy which the modification after the east-and-west strong compression term (2.4Ma or subsequent ones) after inversion tectonics.

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