Table T8. Stratigraphically useful diatom events, Site 1101.
 
Depth (mbsf)
Site 1101 (estimated)
Age (Ma)
Event
Chron
CK95 age (Ma)
Core, section,
interval (cm)
t
b
t
b
Leg 178, Site 1101
Leg 120*
Leg 177**
†



178-1101A-







TC Hemidiscus karstenii

<3H-2, 110
20.80
0.29 —

0.19
BC Hemidiscus karstenii

>3H-4, 110 23.80
0.34
—

0.42

Cn1(o) 0.78
54.60 55.40





T Thalassiosira fasciculata

6H-CC, 7H-1, 75 47.70 48.60 0.66 0.70 0.68 1.70 0.70
T Fragilariopsis barronii

>9H-CC, <10H-3, 30 76.05 79.50 1.06 1.13 1.095 1.39 1.40 1.30
T Thalassiosira torokina

<14H-4, 44
119.14
1.76 — 1.85 1.80
T Actinocyclus karstenii

>13H-5, 52, <13H-6, 68 111.22 112.88 1.62 1.64 1.63 1.78-2.9

T Thalassiosira vulnifica

17X-CC, <18X-CC 150.50 160.12 2.33 2.50 2.415 2.28 2.50 2.30
T Thalassiosira insigna

19X-3, 70, <20X-3, 70 165.30 173.40 2.55 2.66 2.605 2.57 2.63 2.60

C2An.1n(t) 2.58
215.35 217.25





T Fragilariopsis interfrigidaria

18X-CC, 19X-2, 70 160.12 162.30 2.50 2.52 2.51 2.67 2.63
T Thalassiosira striata

>21X-3, 58, <21X-4, 40 182.88 184.20 2.76 2.78 2.77 2.92-3.4

B Thalassiosira vulnifica

>21X-3, 58, <21X-4, 40 182.88 184.20 2.76 2.78 2.77 3.17 3.26
B Thalassiosira insigna

>23X-1, 29,<23X-CC 198.79 208.23 2.92 3.03 2.975 3.40 3.40

Notes: T = top/last occurrence datum, B = base/first occurrence datum, BC = base common/first common occurrence datum, TC = top common/last common occurrence datum, t = top, b = bottom. (o) = onset, (t) = termination. CK95 = Cande and Kent (1995). * = Harwood and Maruyama (1992), ** = Gersonde et al. (1999), † = Gersonde and Bárcena (1998). Bold entries are estimated ages drawn from magnetostratigraphic information and the depths these events occurred in the cores.