Provenance
data from sand-sized sediment is an important tool in sedimentology, tectonics
and structural geology. To understand the role of sedimentary process in
controlling provenance signatures in sand-sized sediment at the scale of entire
sediment dispersal systems, Sickmann and others explore U-Pb
detrital-zircon data from a series of modern second-order river-to-deep-marine
depositional systems in central California. The results illustrate that changes
in provenance signatures from sand-sized sediment across dispersal systems and
between dispersal systems potentially are influenced by sedimentary processes -
and not by tectonic evolution of sources or the evolution and expansion of
drainage basins as commonly assumed. These data emphasize understanding the
potentially important role of sediment mixing in the marine realm, systems with
changes in sediment pathways that can create variable pathways.
Detrital-zircon mixing and partitioning in fluvial to deep marine systems, central California, U.S.A. by Zachary T. Sickmann, Charles K. Paull, and Stephan A.
Graham
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