Elevated lateral stress in unlithified sediment, Midcontinent, United States—geotechnical and geophysical indicators for a tectonic origin

Integrated Seismic-Reflection and Microgravity Imaging Across the Southern Boundary of the Charleston Uplift, New Madrid Seismic Zone, Usa

“…The Jackson Formation has medium-to very-fine grained silty sand and is interbedded with clayey silt (Crone, 1981). Woolery et al (2003) report that since these Eocene strata are of similar lithologies, the boundaries between individual formations are not well observed in seismic exploration.…”