Geology Reference
In-Depth Information
(c)
79
o
W
78
o
W
77
o
W
N
26
o
N
25
o
N
Low-Mg
calcite
(fractional
abund-
ance)
0.030
0.025
24
o
N
0.020
0.015
0.010
0.005
0
0
100 km
23
o
N
Fig. 4.
Continued.
Table 1.
Fractional abundance of carbonate mineralogies (% of total carbonate).
Bulk total dataset
Bulk 2004 dataset
<63 μm 2004 dataset
Mineralogy
Mean
Maximum
Minimum
Mean
Maximum
Minimum
Mean
Maximum
Minimum
Aragonite
93.3
100
77.7
94.8
100
79.9
82.7
94.5
36.5
HMC
6.5
22.3
0
4.8
19.5
0
10.6
20.3
2.8
LMC
0.2
3.9
0
0.5
1.6
0
6.7
47.2
0.4
DISCUSSION
facies distribution patterns observed on other
carbonate platforms? To address these questions it
is necessary to assess possible links between sedi-
ment distribution and physical processes such as
currents, tides, platform topography, evaporation
(salinity), water exchange with the surrounding
ocean water masses, and sediment export.
Two major questions should be answered when
discussing the sediment distribution along
GBB: (i) What physical and biological processes
control the present-day sediment distribution;
and (ii) how does this distribution compare with
