c Probably formed as a result of longwave re-deposition of Mississippi River sediments during the Holocene when it was creating the Maringouin and Teche Deltas, then the Mississippi River moved east and the Beach was built of shells/sand.
(it; was creating; the Maringouin and Teche Deltas) (the Beach; was built; of shells/sand) (the Mississippi River; moved; east; T:then) Context(the Mississippi River moved,List([166, 193))):(c; Probably formed; as a result of longwave re-deposition of Mississippi River sediments during the Holocene)
the Mississippi River moved,List([166, 193))
it the Beach the Mississippi River c
was creating was built moved Probably formed
the Maringouin and Teche Deltas
of shells/sand
east T:then
as a result of longwave re-deposition of Mississippi River sediments during the Holocene