In
providing clues of since-leveled landscapes, the stratigraphic record records
tectonic evolution. In this study, Uddin et al. integrate
petrographic, detrital-geochronologic, and mineral-chemistry analyses of
detrital minerals and lithic clasts of the Pennsylvanian Pottsville Formation,
part of a clastic wedge in the foreland basin in Alabama and Mississippi.
This manuscript illustrates that this part of the foreland basins received
detritus mostly from the Appalachians, rather than the Oucahitas, and draws an
analogy to the modern Himalayan-Bengal system. The mineralogy and dates
suggest an initial Blue Ridge Piedmont source, followed by a migrating steep
erosional front that buried previously eroded terrains; alternatively, some of
the variations may result from along-strike transport of detrital material in
the foreland basin.
Detrital history of the Lower Pennsylvanian Pottsville Formation in the Cahaba Synclinorium of Alabama, U.S.A. by Ashraf Uddin, Willis E. Hames, Tara Peavy, and Jack C.
Pashin
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