TITLE:
Construction of Subsurface Geological Structures Using a Drilling Database: A Case Study for an Intra-Arc Basin, the Osaka Plain, Southwest Japan
AUTHORS:
Minao Sakurai, Fujio Masuda
KEYWORDS:
Intra-Arc Basin; Subsurface Geological Structure; Basement Structure; Drilling Database
JOURNAL NAME:
Open Journal of Geology,
Vol.3 No.2,
April
24,
2013
ABSTRACT: 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.