A  M12-05-01-HX 
Ba, IN PPM(O) 
800 
1200 1600 
DEPTH,IN CM 
400 600 
[Ba, PPM/Al, %lx 104(Q) 
800 
DEFTH,IN CM 
3 -M12-16-00-IX 
Ba, IN PPM(O) 
4000 6000 8000 
0 2000 
10900 
800 1200 
[Ba, PPM/Al, %)x104(Q) 
1600 
) 400 2000 
FiGurRE 17.—Distribution of barium and the barium-to-aluminum ratio at locations adjacent to drilling sites in (A) block 312 
and (B) block 410. Samples were collected with a grab sampler. 
TIME, IN YRS 
0 05 Ke) 15 2.0 25 30 
FF “Ir 
08 
o 
2 
a 
= 06 
z 
¢ 
lo} 
S 
8 04 
n 
= 
a 
02 
CRUISE | Opucuula a's Wh vemmur OenIO) JUNI 
BD eG SP PP oP a od 
S SY 2 S sk V2 & 
y LF ery Fey Fes 
FIGURE 18.—Total inventory of barite (calculated from barium 
concentrations) within a 6-km radius around station 5 on dif- 
ferent sampling occasions. ND=no data. 
stations 5 and 16 at least once per year for at 
least 2 years. Ba depth profiles of the fine and 
bulk sediment will determine the rates of sedi- 
ment mixing processes and will determine the 
relative importance of erosion and mixing in 
explaining the decrease in the Ba concentration 
in surface sediment. 
3. Stations that will be sampled for benthic 
infaunal studies beyond the third year of this 
TIME, IN YRS 
e) 0.5 1.0 15 2.0 2.5 3.0 
Ba AS BaSOq,IN LB xl04 
0 
CRUISE | Ee SE OMaL Oe oe N00 i2 
KD RD Ra A? SNS RR oe 
% RN RY 
SY RS) w“ RNS ws RS) “ yr yw RS) < Ss 
FIGURE 19.—Total inventory of barite (calculated from barium 
concentrations) within the annulus between 0.5 and 2 km 
from station 5 on different sampling occasions. ND=no data. 
program also should be sampled for metals. 
Particular emphasis should be given to stations 
to the west of the drilling area (stations 7A, 8, 
9, 12, 18, 13A, and control station 2) to evaluate 
any long-term accumulation of Ba in expected 
areas of deposition. 
4. Further analysis and publication of these 
results should be accomplished in order to max- 
imize the scientific value of this program. 
