Table T3. Petrographic observation and visual estimates of components in thin sections of selected samples.
Core, section, interval (cm)
Hand specimen
lithology
Analyses
Matrix
Biogenic
Textures
Diagenesis
Porosity
Carbonates (%)
Fe oxides (%)
Quartz (± opal-CT) (%)
Organic matter (%)
Other
Radiolarians (%)
Radiolarian spicules (%)
Foraminifers (%)
Ostracodes (%)
Fish scales/Teeth (%)
Coccoliths (%)
Burrowed
Laminated
Cross-lamination
Other
Opal-CT lepispheres
recrystallized to quartz
Carbonate filling bioclasts
Microporosity in siliceous matrix
Intraparticle porosity
Fracture porosity
198-1207B-
46R-2, 7–10 Chert and porcellanite
39 <1 60 1 <1 glauconite ? ? ?



X (?) X (?)
? ?


46R-1, 77–79 Chert XRF, XRD 40 <1 50 0















46R-1, 134–137 Chert
48 1 46 0
1
3 1






X


46R-1, 141–144 Chert XRF, XRD 2 1 94 2


3 (?)







X


46R-1, 146–149 Porcellanite
30
63 0
7









X X X X
47R-2, 39–42 Chert XRF, XRD 2 1 92 0
2.5 (?)
2.5 (?)







X

X
47R-2, 75–79 Limestone XRF, XRD 60 1 24 0


5


X



X X X
49R-1, 101–108 Porcellanite
25 <1 70 0 <1 glauconite

2 <1 <1
X



X X

49R-1, 142–145 Chert
15 1 81 1


3 (?)






X X
?
198-1213A-
7R-CC, 0–3 Chert and porcellanite XRF, XRD 3 1 96 0


?





Cracks (?)

X
X
8R-CC, 9–12 Chert and porcellanite
15 3 75 ?


6 (?) 1




Cracks (?)
X
X
8R-CC, 12–15 Porcellanite and chert
2
90 0

? 7 (?) <1
<1




X X X
12R-1, 22–27 Porcellanite
12
78 0
4 2 5 <1
<1




X X X X
12R-1, 22–27 Porcellanite XRF, XRD 25 <1 65 0
9 2








X X X X
12R-1, 36–40 Chert and limestone
25
70 0
5









X X X
15R-1, 64–67 Porcellanite and chert
3
93 0


4 <1
<1




X X

15R-1, 77–80 Chert and porcellanite
3
85 0
3 1 8

<1




X X X X
16R-1, 101–104 Chert and porcellanite
3
89 0
3 <1 4







X X

20R-1, 5–10 Chert and porcellanite
10
85 0
5









X
X
21R-1, 36–40 Chert and porcellanite XRF, XRD 2
83 ?
10
5






X X X
X
198-1213B-
1R-1, 28–30 Chert
3 1 85 0
1
9 <1 <<1 3



X X
X X
1R-1, 52–54 Chert
1 <1 78 ?
1
18





Cracks X X


1R-1, 57–59 Chert XRF, XRD 5 <1 85 1
3 1 6 <1





X X X X
3R-1, 41–43 Chert and porcellanite XRF, XRD 3 2 92 ?
tr(?)
3 <1





X X X X X
3R-1, 53–55 Chert and porcellanite
3
94 ? <1 barite tr(?)
3





Major veins X
X X X
3R-1, 73–75 Chert and porcellanite XRF, XRD 3 <1 70 ? <1 glauconite 7 2 10 <1





X X X X
4R-1, 34–36 Quartz veins XRF, XRD 8
80 0
11 1






Major quartz-filled veins
X X X
4R-1, 90–92 Chert and porcellanite
30 <1 54 1
<1
15






X X X X X
4R-1, 106–108 Chert and porcellanite XRF, XRD 2 <1 85 1
3 3 5 <1





X X X
X
7R-1, 59–61 Chert and porcellanite XRF, XRD 4 <1 87 0
3 <1 4 <1
<1



X X X X X
7R-1, 97–99 Porcellanite XRF, XRD 15 <1 65 0
19 1 <1 <1






X


9R-1, 59–61 Chert and porcellanite XRF, XRD 4
90 0
6









X
X X
9R-1, 124–127 Chert and porcellanite XRF, XRD 3 <1 90 0 1 opaque 5



<1




X

X
10R-1, 8–10 Limestone XRF, XRD 75 <1 20 0 2 opaques 5



<1





X X
19R-1, 19–21 Limestone
92 2
0 5 opaques

<1 <1 <<1





X
X X
19R-1, 59–63 Chert XRF, XRD 4 <1 91 1


3






X X
X
19R-1, 96–99 Chert and porcellanite XRF, XRD 1 <1 89 ?
8 <1 2







X

X
19R-1, 103–105 Limestone XRF, XRD 86 1 6 0 <1 glauconite 4 <1 <1
<1
X (?)




X X
20R-1, 21–23 Limestone
93 1
0 5 opaques

<1







X X X X
20R-1, 37–40 Limestone
82 1 7 0 <1 glauconite 5 2 3
<1





X X X X
20R-1, 85–89 Chert and porcellanite/chalk
5 3 84 0 3 opaque 4 1 1







X
X
21R-1, 31–33 Limestone XRF 70
26 0 2 opaques 2









X X X
22R-1, 38–42 Limestone
95 1
0 3 opaque 2
3



X


? X
X
22R-1, 63–65 Limestone
85 <1
0 1 opaque 8 2 5







X X X
22R-1, 120–125 Chert and limestone XRF, XRD 5 <1 98 0 4 opaques 1
4 <1 <1




X X
X
23R-1, 58–60 Limestone
90 <1 2 0
8 1



X (?) X



X X X
23R-1, 62–64 Limestone
89 <1 3 0
7 1




X



X X X
23R-1, 66–68 Limestone
93 <1 3 0
7





X



X
X
23R-1, 74–76 Chert and porcellanite
3 2 95 1 <1 glauconite 0.5 (?)
0.5 (?)







X
X X
25R-1, 22–26 Limestone XRF, XRD 92 <1 3 0
5 (?)









X X X X
25R-1, 70–76 Chert XRF, XRD 10 <1 86 0
3









X


26R-1, 18–21 Chert and porcellanite
4 1 82 0
20 1







X X X

26R-1, 53–55 Chert and porcellanite XRF, XRD 10 <1 82 1 <1 glauconite 5








X X

X
26R-1, 66–70 Chert XRF, XRD 1 <1 84 2
15
?
<1
X


X X


27R-1, 26–29 Limestone
80 <1 5 0
15








X
X X
27R-1, 40–42 Chert
5 1 85 1
8 1 ?

<1 X (?)


X X X

27R-1, 50–53 Chert
5 <1 95 0
4









X


27R-1, 78–82 Chert XRF, XRD 2 <1 88 1
15
5 (?)











198-1214A-
14R-1, 20–26 Chert
73
15 0
2 1 9






X X X
X
14R-1, 53–56 Chert and porcellanite
5
85 0
1
9






X X
X
14R-1, 97–100 Chert and porcellanite
2 1 87 ?
9

1






X X
X
16R-1, 17–19 Chert and porcellanite
3 1 80 0
13 1 1 <1





X X X X
16R-1, 80–83 Chert and porcellanite
2 <1 83 0
6 1 7







X
X X

Notes: XRF = X-ray fluorescence, XRD = X-ray diffraction. X = present.