Fig. 3 Injection and earthquakes in three study areas. Injection and earthquakes in three study areas. Monthly injection rates from EOR, SWD, and unknown wells within the Cherokee, Perry, and Jones study areas, as well as the times and magnitudes of earthquakes in each area. Detailed maps of each study area are also shown. The symbols for earthquakes and injection wells on the maps are the same as in Fig. 1. Note that the vertical scale is the same for each study area in this figure. Each study area is 5000 km2. F. Rall Walsh III, and Mark D. Zoback Sci Adv 2015;1:e1500195 Copyright © 2015, The Authors