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Figure 5 | Earth, Planets and Space

Figure 5

From: Outer-rise normal fault development and influence on near-trench décollement propagation along the Japan Trench, off Tohoku

Figure 5

A subducting horst and trench sediments. (A) Line D02, located near the southern end of the survey (Figure 1). (B) Interpretation of line D02. Blue dashed line is the top of oceanic crust. Red dashed line is décollement. The green dashed line is an unconformity (note angular relations below), implying recent sediment deposition of horizontal reflections. Variable thickness of sediments is also apparent on the seaward horst compared to the graben at the trench axis. Note also the distance between the deformation front and trench axis. The trench axis does not directly correlate with the deformation front location. (C) Section of high-resolution line HD21A (yellow section in Figure 1). A near-trench sediment deposit, likely a turbidite, found at a basement-cutting normal fault (black). The younger sediment (blue region) onlaps against an unconformity (green dashed line).

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