In unconfined lowland reaches the altered sediment regime is buffered by the intervening alluvial sediment
stores [49, 54].
It is not known from these studies what might occur if the alluvial sediments
removed by dredging were coarser than the materials exposed by dredging.
Because SSDS at the Ryadino site are linked with alluvial sediments
formed on the flat surface of the highest river terrace during the Holocene climate, the above-mentioned triggers influencing the sedimentary structures are excluded.
The main goals of this study are (1) to describe the nature and distribution of the alluvial terrace deposits of the Quaternary alluvial sediments
of the Alto Guadalquivir Basin (SE Spain) based on sedimentary facies as well as on mineral and geochemical evidence, (2) to identify and discriminate different sediment sources of the Guadalquivir River alluvial deposits, (3) to estimate the potential factors that control the observed changes in the mineralogy and geochemistry within the different studied sedimentary sequences, and (4) to propose a terrace deposit model in the light of processes that have interacted to form the terrace sediments.
The alluvial sediments
and the alluvial fans rainfall water enters the aquifer have a considerable spread.
This is particularly true for New Brunswick, where many of the communities were settled along river valleys and coastal areas, which are underlain by thick deposits of glacial and alluvial sediments
that can amplify ground motion.
Sampling and analysis of alluvial sediments
are useful for the detection of natural and anthropogenic sources of pollution (6).
Preliminary investigations of the area have indicated the presence of alluvial sediments
containing both gold and platinum.
Elution analyses indicated that potential heavy metal leaching from Trinity River alluvial sediments
Vaughan (2005) labeled horizons forming in alluvial sediments
as A horizons because they had over two times the carbon concentration than did field soils at the site (though part of this increase may be a result of the enrichment of eroded sediment).
The formations, through which the crossing was installed, consist primarily of soft alluvial sediments
(sand, silt and clay) with trace amounts of fine gravel and shell fragments.
With no outlet for runoff, a lake formed, though alluvial sediments
washed down from the hills and eventually filled the canyon.
Paleocurrent analysis of alluvial sediments
: A discussion of directional variance and vector magnitude.
Contemporary alluvial sediments
comprising interbedded, yellow and orange silts and sands with minor gravel lenses overlie Unit 2.