Abstract
For more than 30 years it has been recognized that some earthquakes in Texas might be caused by various activities associated with oil and gas development. However, detailed investigations were hampered because there were only a handful of continuously operating seismograph stations in Texas, and only occasional local network deployments. Then, the 2009-2012 passage of the NSF EarthScope seismograph array through Texas made it possible to locate and analyze regional earthquakes in more detail. This presentation will summarize what is known about possibly human-caused earthquakes in Texas, including an update on in-progress, not-yet-published investigations concerning recent earthquakes in East Texas, in the Eagle Ford of south Texas, and in the Cogdell field in west Texas.