摘要：Deformation band at Petani Formation included in the type of disaggregation band, where deformation on this formation resulted from tectonics stress at Plio – Pleistocene affecting sandstone layer that being deformed and resulted strain localization feature, filling with iron oxide sand. The measurement for this research was using grain size analysis, distribution analysis of shear trends, and measurement of permeability for each deformation band. The result shows that grains size dominantly fine sand – medium sand (0.149 mm – 0.297 mm), followed by the distribution of deformation trends showing NW – SE direction, and also good in permeability (3.4 mD– 188.4mD). It can be concluded that the structural features of deformation band can also create good permeability for fluid flow.
