14. SEDIMENT THIN SECTION DATA
G. V. Wood
British Petroleum Research Centre, London, England
315
SEDIMENT THIN SECTION DATA
Particle Size
Mode (mm)
Observable
Porosity
InterParticle
Grain
Supported
IntraParticle
in
σ
a
Sample Designation
24
24A
24A
25A
27
29
29
29C
30
30
30
30
30
30
30
30
30
30
30
31
2
1
2
1
7
1
19
2
9
9
10
10
10
11
12
13
14
15
16
9
1
1
1
1, 10 cm
1
Core catcher, 5 cm
1
1, 5 cm
2, 4 cm
1, 8 cm
2, Top
3, Top
Core catcher
Core catcher
Core catcher
1, Top
Core catcher
1, Bottom
Core catcher
o
o
O
t-H
O
O
p
'éβ
o
(N
Λ
p
p
in
ò
d
in
ò
d
in
in
ö
σ
p
d
1
<U
•M
in
/
o
cs
×o
o
d
V
en
<U
Cu
+-<
CΛ
°?
<U
+->
-ö
/1
^C
~ΣL
y
//
/
Hole-Core-Section-Depth in centimeters from top of section.
316
Packing
y
^y
~ZL
~ZL
//
y/
Z!
y
z
z
z
<U
>—i
<U
öθ
<U
en
-δ
.S
o
jjjj
cβ
00
U
i—
<U
δ
Particulate Components
Carbonate
Non-Skeletal
Particles
Skeletal Particles
Bioclastic
o
OH
o
o
H
12
O
δ
CO
XX
35
17
X
18
23
30
1/2
X
14
30
XX
II
10
X
j
14
317
SEDIMENT THIN SECTION DATA - Continued
Particulate Components
Carbonate
NonCarbonate
Skeletal Particles
Quartz
Non-clastic
c
o
g
"<3
Sample Designationa
24
24A
24A
25A
27
29
29
29C
30
30
30
30
30
30
30
30
30
30
30
31
2
1
2
1
7
1
19
2
9
9
10
10
10
11
12
13
14
15
16
9
1
1
1
1, 10 cm
1
Core catcher, 5 cm
1
1, 5 cm
2, 4 cm
1, 8 cm
2, Top
3, Top
Core catcher
Core catcher
Core catcher
1, Top
Core catcher
1, Bottom
Core catcher
-t->
O
H
3
ε
o
CΛ
"o
S
<L>
T3
O
.s
o
q-l
13
o
O
-t->
65
20
20
15
54
15
25
32
10
58
55
55
6
Hole-Core-Section-Depth in centimeters from top of section.
318
o
O
N
o
•u
σj
00
1
X
o
on
14
60
+->
JL>
'o
o
ex
o
X
T3
o
o
o
CΛ
"o
%
e
o
&
o
en
<U
t-<
(U
00
'o
"c3
CJ
xXx
x
x
X
g
δ
X
X
X
X
+->
X
W
-t->
CD
o
H
40
5
xx
x
x
X X X
X
X
CΛ
.S
6
op
>-H
-t->
00
X
X
5
2
X
X
X
1 X
1/2 X
/
X
1/2
1/2
X
X
><
X
y
^^
X>
/
^^
c
_o
o
.3
•t->
X
QJ
</5
_o
3
/
Particulate Components
Non-Carbonate
Feldspar
Rock Fragments
Organic
_c
c
1
.S
^~
^
ε
.s u
Is*
s
^
I I
H
£
^
j i
^
&
2
^
.2
- I
&
2?
r^
2
Z_
5 _ ^
2_2
5 X
L2_
1.2
^
^"^
^
1/2
Zi/2.
~P"
Z
Z7
LZ
Z
nxè
—^ O
in
———
20"><
319
SEDIMENT THIN SECTION DATA -
Continued
Particulate Components
Non-Carbonate
Miscellaneous
Heavy
Mineral
Mica
<u
+->
CΛ
g
CΛ
"S "S
O
<u
l_l
Sample Designationa
24
24A
24A
25A
27
29
29
29C
30
30
30
30
30
30
30
30
30
30
30
31
o
H
CΛ
O
"o
1 /
2 1
11
2 1
1
7 1, 10 cm
11
19
Core catcher, 5 cm
21
9 1, 5 cm
1
9 2, 4 cm
1
10 1, 8 cm
5
10 2, Top
4
6
10 3, Top
1
11
Core catcher
12
Core catcher
1 y×^
13
Core catcher
1
1
14 1, Top
15
15
Core catcher
16 1, Bottom
1
9
Core catcher
o
OH
O
3
Q
y
CΛ
<U
g>
s
'x
O
c
o
u
JU
kH
CΛ
3
t•H
/
y
y /
y S '
y
yS
/
y
y /
^x?
p<^
/
yS
//
y<
×
O
<u
c3
òa
y /
Hole-Core-Section-Depth in centimeters from top of section.
320
"53
<U
<u
CΛ
CΛ
y \ZL
yS
CΛ
CΛ
CΛ
<U
3
δ
Sparite (%)
25
8
5
10
45
2
15
65
1
67
95
Chert
Clays
Quartz
Total (%)
Matrix Undiff.
Chlorite
Evaporites
IUite-Sericite
Kaolinite
Carbonate
Total (%)
Halite
Gypsum
Calcite Dolomite
Anhydrite
Total (%)
Siderite
Micro - (%)
Macro - (%)
Micrite (%)
Matrix or Cement
Non-Carbonate
Silica
X
91
23
60
47
59
17
61
59
40
55
15
10
10
90
321
SEDIMENT THIN SECTION DATA -
Continued
Matrix or Cement
Structures/Textures
Non-Carbonate
Fractures
Miscellaneous
GO
<U
g
c
<U
|
Sample Designationa
24
24A
24A
25A
27
29
29
29C
30
30
30
30
30
30
30
30
30
30
30
31
2
1
2
1
7
1
19
2
9
9
10
10
10
11
12
13
14
15
16
9
1
1
1
o
H
<U
-i->
o
+->
α>
(X,
>»
OH
è
<u
PH
CΛ
O
o
£ u
1, 10 cm
1
Core catcher, 5 cm
1
1, 5 cm
2, 4 cm
1, 8 cm
2, Top
3, Top
Core catcher
Core catcher
Core catcher
1, Top
Core catcher
1, Bottom
Core catcher
Hole-Core-Section-Depth in centimeters from top of section.
322
<u
"><
αj
en
CΛ
"o
N
<U
δ
o
co
<u
‰
>.
I-H
C3
u
<
1_
<U
6
Structures/Textures
Bioturbation
Brecciation
Grain Welding
Current Bedding
Graded
Stylolites
Recrystallized
Remarks
Strong orientation of clay minerals
Heavily stained.
Dolomite obliterates original structures
Sparite associated with radiolaria
Dolomite obliterates original structures
Porosity in foraminifera voids (?)
Porosity in foraminifera voids (?)
Pyroxene fragments common Glauconite developed in Radiolaria and surrounding matrix.
Porosity in foraminifera (?)
Glauconite replacing Radiolaria and surrounding matrix.
Stained
Stained
Porosity in foraminifera voids (?)
Porosity in foraminifera voids (?)
NB. Staining was only possible on four slides (29C-2-1; 29-1-1; 25A-1; 24A-2-1). Subsequent carbonate identifications are therefore tentative.
323