Author(s)

Minao Sakurai, Fujio Masuda

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Graduate School of Science and Engineering, Doshisha University, Kyoto, Japan.

Subsurface geological cross sections of 0 - 200 m depth were constructed using a dense drilling database of the Osaka Plain in the intra-arc Osaka Basin of the Japan island arc, an active plate margin. The cross sections revealed the subsurface geological structures and the geometry of folding and faulting in the basin. The comparison between the constructed subsurface cross sections and the seismic sections of the basement and basin fills at a depth of 1500 - 2000 m showed that the basement and shallow subsurface structures are similar; however, the shallow cross sections were of higher resolution than the deep seismic profiles.

Intra-Arc Basin; Subsurface Geological Structure; Basement Structure; Drilling Database

M. Sakurai and F. Masuda, "Construction of Subsurface Geological Structures Using a Drilling Database: A Case Study for an Intra-Arc Basin, the Osaka Plain, Southwest Japan," Open Journal of Geology, Vol. 3 No. 2, 2013, pp. 39-43. doi: 10.4236/ojg.2013.32006.