Along-Track Seismic Profile from 3-D Cube
First, note the horizantal and vertical scales, showing the dimensions of the seismic profile, and the orientations: NW - northwest (landward), SE - southeast (seaward)
Next, download this digital image as a pdf to use a drawing program for making your interpretation.
Color and label the features listed below
Trench sediments (color in light yellow)
Shikoku Basin sediments carried into trench on the subducting oceanic crust (color light orange).
- Frontal thrust zone, which is the most eastward (oceanward) seriies of thrusts, towards basinward direction. These are presumably the youngest thrusts, but not the only active thrust faults in the prism.
- The series of individual thrusts of the imbricate thrust zone, composed of the offscraped sediments of the accretionary prism, and extending eastward to the frontal thrust
- Slope sediments resting on top of the offscraped sediments of the accretionary prism (color light yellowish-green).
- Kumano forearc basin sediments (color light green)
- Top of the subducting oceanic crust (color light blue).
- Fault offseting top of the subducting oceanic crust.
- Subducting sediments of Shikoku Basin sediments (continue color light orange).
- Decollement (active)
- Older, now inactive decollement.
- Mega-splay fault, separating the young portion of accretionary prism from older accretionary prism, located under the sediment of the Kumano forearc basin.