Comparison of
Fluvial Styles Within the Late Carboniferous
Succession of the
Allen, Jonathan1, Christopher
R. Fielding1, Michael C. Rygel2, Martin R. Gibling3
(1) University of Nebraska-Lincoln, Lincoln, NE (2) SUNY Potsdam, Potsdam, NY
(3) Dalhousie University, Halifax, NS
The Late Carboniferous succession of the
Fluvial units within the Late
Carboniferous succession preserve a wide variety of upper flow regime
structures (UFRS) such as plane bedding, humpback cross-stratification, antidunes, etc. These sedimentary features record sediment
accumulation under highly variable discharge regimes. Successions that preserve
abundant UFRS, along with other climate-sensitive features such as in situ
tree fossils within fluvial channel fills, may point to a paleoclimate
where there was a pronounced variation in precipitation and runoff, which would
have a significant effect on the type of fluvial style preserved. Preliminary
investigation has shown that the preservation of UFRS varies through time. UFRS
are preserved within the Boss Point (Namurian), South
Bar (Westphalian B-D), and
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California