Fig. 4 Seismic reflection data in the Venus, Texas, study area. Seismic reflection data in the Venus, Texas, study area. (A) Location map of seismic reflection profiles near Venus, Texas, Johnson County (for location, see Fig. 2), showing interpreted faults at the top of the crystalline basement, the 2008–2016 relocated seismicity (colored circles) (32), the ANSS moment tensor location of the 2015 Mw 4.0 event (location uncertainty ± 4.5 km). SHmax orientation from Lund Snee and Zoback (42). Squares are saltwater disposal wells with production well numbers [American Petroleum Institute (API)]. (B) Unmarked time-migrated, depth-converted seismic reflection profiles. (C) Interpreted seismic reflection profiles. Red rectangles on wells show saltwater disposal injection depth intervals. Hypocentral locations (green circles) were projected only along line A. See Fig. 3 for corresponding stratigraphy in the FWB. Maria Beatrice Magnani et al. Sci Adv 2017;3:e1701593 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).