Seismic Signature of Transition Zone (Wolf Ramp) in Shale Deposits with Application of Frequency Analysis

Figure 5

Location of the survey area within the main tectonic units of north-central Europe showing the Baltic Basin (dashed line). TTZ: Tornquist-Teisseyre Zone; O-2, L-1, and K-1—wells location, after Poprawa et al. [9].