Table T11. Distribution of diatoms, Hole 1234A.
Core, section, interval (cm)
Depth (mbsf)
Depth (mcd)
Identification
Method
Abundance
Preservation
Actinocyclus curvatulus
Actinoptychus senarius
Aulacoseira glanulata
Azpeitia nodulifer
Chaetoceros spp. (resting spores)
Delphineis spp.
Fragilariopsis doliolus
Hemidiscus cuneiformis
Paralia sulcata
Pseudonitzschia
Roperia tesselata
Thalassionema nitzschioides
Thalassiosira spp.
Freshwater benthic
Freshwater species (planktonic)
Marine benthic species
Marine neritic species (other)
Marine pelagic species (other) COSM
Marine pelagic species (other) WW
Marine pelagic species (other) CW
Remarks
202-1234A-


























Mudline 0.00 0.00 PAL S VA VG F F T
A





F C
T
C T
T
1H-1, 40 0.40 0.40 Toothpick S A G



A


R

C R-F T T
C F


1H-3, 42 3.42 3.42 Toothpick S F M



F F


R
R F T T R F T
T
1H-CC, 22-27 5.25 5.29 PAL S C-A G-M R T

A





R F

R




2H-2, 40 7.20 7.05 Toothpick S C M



C






F

F




2H-4, 40 10.20 10.05 Toothpick S F-C M



F



T

R-F


T



2H-6, 40 13.20 13.05 Toothpick S A G



A T






T T





2H-CC, 24-29 15.22 15.20 PAL S C-A G-M T


A



T
F F T T T T


>63-µm cells of Coscinodiscus
3H-2, 40 15.57 15.32 Toothpick S C M



C






F







3H-4, 40 18.57 18.32 Toothpick S C-A M


R A






F


T



3H-6, 40 21.32 21.07 Toothpick S C-A M



A






F







4H-1, 40 24.70 26.56 Toothpick S C M F


C



T
F F

T F R
R
3H-CC, 27-32 24.91 24.74 PAL S C-A G-M T


A
T




F

T




4H-3, 40 26.74 28.60 Toothpick S C M-G F


C T


T

F


R



4H-5, 40 29.63 31.49 Toothpick S A G F


A






C


F



4H-7, 40 32.51 34.37 Toothpick S C M



C






F

T

T

5H-1, 40 34.20 37.42 Toothpick S C M-G



C F








T C R R

4H-CC, 38-43 34.73 36.64 PAL S D G F

T D R


T

F

T F T
R
5H-3, 40 36.15 39.37 Toothpick S C M-G R


C F

T T
F F

T C T-R


5H-7, 40 42.06 45.28 Toothpick S C M


R C



T
R F

R F



5H-CC, 30-35 43.90 47.14 PAL S F M
T

F






F T T T




6H-CC, 25-30 52.69 57.88 PAL S A G-M



A T





R


R

R-F >63-µm cells of Coscinodiscus
7H-CC, 34-39 60.95 68.13 PAL S A M



A F-C T



R F

R F



8H-1, 40 62.70 71.68 Toothpick S VA G R
T T VA
R

T
F R
T



T
8H-3, 40 64.76 73.74 Toothpick S VA G
F
F VA



R

R

T F

R
8H-CC, 35-40 71.42 80.42 PAL S A G

T R A T


R

F T R
C



9H-3, 40 74.37 86.94 Toothpick S C-A P-M
F

C R




F F


C-A R

Important change in assemblage-Cyclotella
9H-CC, 24-29 81.41 94.01 PAL S F-C M-P

T
F F




R-F R
T T R



10H-2, 40 82.28 96.91 Toothpick S C M


R C R


T
T F


R



10H-4, 40 85.17 99.80 Toothpick S F-C G-M


T CA





R F T T T




10H-CC, 33-38 90.61 105.32 PAL S C-A G-M



A F




R F

T




11H-1, 40 91.20 107.54 Toothpick S C-A M
F

C F




F C

R




11H-7, 40 99.33 115.67 Toothpick S C M



C






F


F



11H-CC, 23-28 99.90 116.29 PAL S C M


T C T




F F

T F



12X-2, 40 102.20 120.25 Toothpick S C-A G-M T R-F

A
R T


F F

T

T

13X-1, 40 109.20 128.78 Toothpick S F M



F F


T T
F

R R T R-F T
12X-CC, 17-22 109.58 127.67 PAL S C-A M-P R

R C F


T
F F

T R
T

13X-3, 40 112.20 131.78 Toothpick S F P-M F


F R





F

R R



13X-5, 40 115.20 134.78 Toothpick S C-A M F
T F C F


T

F
T
T



13X-CC, 69-74 116.87 136.47 PAL S C-A M T


C F-C




R T


F T


14X-3, 40 121.80 143.11 Toothpick S C M
T
F C R




R F


F-C



14X-CC, 95-100 127.32 148.65 PAL S C-A M



A F





F

R T
T

15X-1, 40 128.40 151.44 Toothpick S A M



A F F



R F


F



15X-3, 40 131.40 154.44 Toothpick S C P-M

T
C R


T
R F-C
T F-C F-C
T
Frequent Cocconeis
15X-5, 40 133.04 156.08 Toothpick S C-A M R R
R C



R
R F

F F


Frequent Cocconeis
15X-6, 40 134.54 157.58 Toothpick S F-C M


T C



R
R F-C

T R



15X-CC, 34-39 135.63 158.72 PAL S F-C M-P



F R




T F-C

R F
T

16X-2, 40 139.50 164.27 Toothpick S A G
T
T A






C-A

F A



16X-3, 40 141.00 165.77 Toothpick S VA G

T F-C VA F R



C C
T T R
T

16X-4, 40 142.50 167.27 Toothpick S A G-M

T
A






F-C
T T




16X-CC, 43-48 145.53 170.34 PAL S C M-P
T
R F-C R-F




T R


F



17X-3, 40 150.45 176.95 Toothpick S A G
R-F

A





C C

R T T T

17X-CC, 38-43 154.26 180.90 PAL S A G-M
T

A F




F R


T
T T
18X-2, 40 158.80 187.04 Toothpick S F-C M-P
T

F-C T T



T

R T




18X-3, 40 160.30 188.54 Toothpick S F-C M-P



F-C






F







18X-4, 40 161.80 190.04 Toothpick S F P



F





T R-F

R
T T

18X-CC, 41-46 164.81 193.11 PAL S C M
T
T C T




T T

T T T


19X-3, 40 169.65 199.62 Toothpick S F P
R
F F-C R




T F



T


19X-CC, 33-38 174.01 204.02 PAL S F M



F F




F F T T R-F




20X-1, 40 176.60 208.32 Toothpick S C P-M



C





R F


F



20X-3, 40 179.60 211.32 Toothpick S R-F P



F





T


T R



20X-5, 40 182.53 214.25 Toothpick S F P

R-F
F






R







20X-CC, 47-52 183.10 214.82 PAL S C-A M
R

A F




F-C R


F



21X-1, 40 186.20 219.64 Toothpick S C M
F
F C R R







R F



21X-3, 40 189.20 222.64 Toothpick S A G
F-C
F-C A
R



F C

T F
R

21X-CC, 39-44 193.83 227.32 PAL S C-A M



A F




F F


R R
R
22X-2, 40 197.40 232.59 Toothpick S R-F P


T F






R-F

T R



22X-4, 40 200.40 235.59 Toothpick S F M



F T




T F


R



22X-6, 30 203.30 238.49 Toothpick S C M



C T




T








22X-CC, 28-33 203.69 238.93 PAL S F M-P

R
F


T

F F
R T F



Notes: PAL = paleontology sample. S = smear slide. Abundance: VA = very abundant, A = abundant, C = common, F = few, R = rare. Preservation: VG = very good, G = good, M = moderate, P = poor. COSM = cosmopolitan forms, WW = warm-water forms, CW = cold-water forms.