A Revised Chronology for Mississippi River Subdeltas

Abstract

o n a n electron-transpare~~t, free-standing S i 0 2 film supported o n a GaAs \vafer (15). A 2.2-nm-long aryl dl-soni it rile was used to link t h e clusters. T h e measured room-temperature conductance of the unlinked array was 133 IIS and of t h e linked network was 78 nS. After a TEiGI

Efficient retention of mud drives land building on the Mississippi Delta plain

“…Recent researchers have given considerable attention to the importance of coarse-grained sediment as a restoration tool (Nittrouer et al, 2012a;Nittrouer and Viparelli, 2014b), but proximal overbank deposits in the Mississippi Delta are dominantly composed of mud (e.g., McFarlan, 1961;Frazier, 1967;Törnqvist et al, 1996). Our results highlight the utility of the more plentiful mud load.…”

“…The basal bounding surface of the ACS was generated with R, using the gstat package (Pebesma, 2004). The ACS consists of primarily muddy facies that overlie a wood peat bed that predates the occupation of the region by the precursor of the modern LMR, Bayou Lafourche (Törnqvist et al, 1996). The earliest Lafourche deposits feature a 1-3 m thick clay bed that transitions abruptly into a silty matrix with sandy ribbons embedded within it (Fig.…”

“…DR2 in Shen et al, 2015). We chose this particular crevasse splay because of the well-established stratigraphy based on 132 cores and a chronology based on extensive 14 C and optically stimulated luminescence (OSL) dating in the region (Törnqvist et al, 1996;Shen et al, 2015) and because its size and timescale of activity are in line with those of planned diversion projects in the MD (Coastal Protection and Restoration Authority of Louisiana, 2017).…”

Analysis and Technical Report of Remote Sensing Data for the USS Kinsman

“…In a recent geological investigation, Törnqvist et al (1996) failed to find direct evidence for an early phase of the Lafourche complex. They concluded that a major distributary (an alluvial barrier) was absent from the area until about 1,500 yrs ago when the late phase of the Lafourche complex formed.…”

Comment on "Wetland Sedimentation from Hurricanes Katrina and Rita"

“…1) that was largely coeval with the present-day Mississippi River. Conservative estimates for the Lafourche subdelta area (10,000 km 2 ) and mean thickness (10 m) (9), time span of activity (1500 years) (10), and bulk density (1.5 g cm . This number is similar to the average over one century for recent crevasse splays in the birdfoot delta (12), showing that comparable deposition rates were sustained over millennial time scales.…”