. Smithsonian miscellaneous collections . Fig. 1.—Blowout breaching the dune chain on the northern side of Sable oriented toward west, on sample line i (see fig. 3). Note SableIsland ponies on distant dune and Lake Wallace on left of ~* &*K t Fig. 2.—Shell and pebble facies on south beach. Note the dark linear patchesof heavy mineral concentrations, aligned subparallel to the dune and beach,which result from winds blowing toward the northeast. This trend isindicated also by scour marks around pebbles. NO. / SEDIMENT TRANSPORT, SABLE ISLAND JAMES & STANLEY 9 SANDS ABOVE AND
. Smithsonian miscellaneous collections . Fig. 1.—Blowout breaching the dune chain on the northern side of Sable oriented toward west, on sample line i (see fig. 3). Note SableIsland ponies on distant dune and Lake Wallace on left of ~* &*K t Fig. 2.—Shell and pebble facies on south beach. Note the dark linear patchesof heavy mineral concentrations, aligned subparallel to the dune and beach,which result from winds blowing toward the northeast. This trend isindicated also by scour marks around pebbles. NO. / SEDIMENT TRANSPORT, SABLE ISLAND JAMES & STANLEY 9 SANDS ABOVE AND BELOW THE PALEOSOL The major difference between sands lying above and below thepaleosol is color; the upper neosand is buff-grey ( 7/4) and thelower paleosand red to orange (10YR 6/6). The paleosand alsopossesses large festoon or cross-stratification structures which arenot as well developed in the upper sand. The mean grain size of the neosand is $ ( mm.), slightlycoarser than the ( mm.) mean size of the paleosand. Whenthe entire distribution curve is plotted, no apparent difference isnoted between the sands, suggesting that processes controlling texturehave been relatively constant since deposition of the
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Keywords: ., bookcentury1800, bookdecade1860, bookidsmiths, booksubjectscience
