Original Little Creek Structure, Louisiana, Paper Now Online
A PDF version of the original hard to find paper about the
Little Creek Structure in La Salle Parish, Louisiana is now
available online for downloading for free. This paper is:
Echols, J. B., and R. P. McCulloh, 1998, Little Creek
Structure, T9N-R2E, La Salle Parish, Louisiana. Basin
Research Institute Bulletin. vol. 8. pp. 30-38.
The Little Creek Structure is an enigmatic polygonal structure
that is located in La Salle Parish near the town of Little Creek,
Louisiana. At the surface, this structure consist of an area of
about 8 square kilometers of Miocene and other sediments that
have been downfaulted by about two thousand feet within a
3.5 to 4.0 km in diameter ring fault system. The Miocene strata
are surrounded by older Oligocene and Eocene sediments.
This structure has been explained by either 1. piracy of a
preexisting piercement-type salt structure, 2. meteorite impact
structure, 3. a deep-seated subsurface igneous diapirism, 4.
or a combination of any of these and other hypotheses. The
surface expression of this structure consist of a series of
discontinuous circular ridges
One geologist, whom I talked with about the origin of this
feature suspects that the interior of this feature is still subsiding.