a type different from the sediments at depth.
The percentages of silt, sand and larger than sand-sized
components of each sample have been plotted on a triangular
coordinate composition diagram.
There is little to note
except that the sediments at depth shows a tendency to be
distinct from the sediment at the water-sediment interface
as regards size components.
The 5, 16, 25, 50, 75, 84 and 95 percentiles were: plotted
on a probability scale versus size on a logarithmic scale in
order to compare the samples for possible gross classes of _
log-normal size distributions.
Only a very vague separation
into 4 classes of sediment distribution is indicated.
3.
The sediment samples have been examined to determine
their gross compositional nature.
were observed:
Several sediment types
Halimeda sand
Foraminiferal sand
Shell sand
Beach foram. fauna sand
Sand with pink grains
Coral
These sediments were plotted on a chart of the lagoon to
determine their areal distribution (see attached chart).
The sediment pattern seems to be most closely related to
the bathymetry of the lagoon and to the prevailing swell
direction.
4,
The coarse fractions of the samples analyzed for size
have been examined under a microscope.
20 constituents were made.
for each sample are being calculated.
—§002212
Grain counts of
Percentage composition values
_..
—_