Jackson Formation
The Jackson Formation is a geologic formation in Tennessee. It preserves fossils dating back to the Paleogene period. Exposed only in bluffs along Mississippi River with thickness at least 60 feet. Primary rock type is sand. Secondary rock type is clay or mud. Other rock types include slit and lignite. "Light gray to buff, medium- to very fine-grained silty sand, interbedded with light gray clayey silt." [1] From the Tertiary geological age.[1]
| Jackson Formation Stratigraphic range: Paleogene | |
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Jackson Formation siltstones are exposed in western Tennessee in the Mississippi River bluffs.[2]
References
- Van Arsdale, Roy; Pryne, Daniel; Woolery, Edward (2013-10-24). "Northwestern Extension of the Reelfoot North Fault Near New Madrid, Missouri". Seismological Research Letters. 84: 1118, 1114–1123. doi:10.1785/0220130067.
- Van Arsdale, Roy. "Final Report for SG-4 Characterization of Active Faults in the New Madrid Seismic Zone" (PDF). MAE Center. p. 18. Retrieved 12 June 2018.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 22 June 2014.
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