The above link shows some information about the location of the Basin.
I'm 43 years old... have lived in Ft Worth area my entire life, until I moved down here to SETX 9 years ago. I have never felt an earthquake... they
are super rare. I think this shouldn't be 'piled' up in a larger earthquake forum due to the rarity. Is there another thread here on ATS that
compiles all of the super rare earthquakes??
Seismic Potential of East Texas Faults
East Texas faults share numerous indicators of low seismic risk. Normal displacements
ensure that stresses are neutralized by tensile fracture at low stresses because the
tensile strength of materials is generally much lower than their compressive strength.
Furthermore, almost all these faults are related to slow gravitational creep of salt and its
sedimentary overburden rather than to movement of lithospheric plates. Moreover, future
movement on the Mexia-Talco Fault Zone is extremely unlikely because undeformed
Pleistocene terraces cross them (Turk, Kehle and Associates, 1978). Similarly, only a few
central-basin faults extend upward to the Lower Tertiary stratigraphic units exposed at
The Mount Enterprise Fault Zone is the least understood zone in East Texas because
of poor subsurface information. At least one seismic profile indicates that it, like the
Mexia-Talco Fault Zone, is based in the Louann Salt, which suggests that the Mount
Enterprise Fault Zone is also related to salt creep, indicating a low seismic potential.
Nevertheless, a compelling reason for detailed study of the Mount Enterprise Fault Zone
is the prevalence of microseismic tremors in this area, a notable example being the
Jacksonville earthquake of November 6, 1981, which had a Richter intensity of 3.5 to 4.0.
Microseismic activity in the East Texas Basin is currently being monitored (Pennington
and others, 1981).