Table T2.

Table T2. Datum levels used for the calculation of the Site 1131 sedimentation rate.

Stratigraphic error
(m)
Upper sample
Lower sample

Datum
type Datum level Age
(Ma) Midpoint (mbsf) Fossil
group Core, section, interval (cm) Depth
(mbsf)
Core, section, interval (cm) Depth
(mbsf)

182-1131A-

182-1131A-

T
Pseudoemiliania lacunosa
0.45
136.10
4.90
1
15X-CC, 19-22
131.17

16X-CC, 16-19
140.96

T
Reticulofenestra asanoi
0.88
251.60
0.92
1
28X-CC, 12-15
250.66

29X-CC, 0-2
252.50

Brunhes/Matuyama
0.78
295.15
4.75

Top of Jaramillo
0.99
333.50
4.80

T
Calcidiscus macintyrei
1.67
445.10
6.55
1
48X-CC, 29-32
438.47

49X-CC, 33-36
451.62

B
Globorotalia truncatulinoides
2
517.26
4.76
4
56X-CC, 28-31
512.50

57X-CC, 47-50
522.01

B
Globorotalia crassaformis
4.5
527.03
5.02
4
57X-CC, 47-50
522.01

58X-CC, 0-3
532.04

T
Globoquadrina dehiscens
5.8
527.05
5.02
4
57X-CC, 47-50
522.01

58X-CC, 0-3
532.04

B
C. macintyrei
12.3
545.09
4.71
1
59X-CC, 19-22
540.39

60X-CC, 0-2
549.80

T
Sphenolithus heteromorphus
13.6
573.62
4.81
1
62X-CC, 0-2
568.80

63X-CC, 0-3
578.40

				Stratigraphic error (m)		Upper sample		Lower sample
Datum type	Datum level	Age (Ma)	Midpoint (mbsf)	Fossil group	Core, section, interval (cm)	Depth (mbsf)		Core, section, interval (cm)	Depth (mbsf)
						182-1131A-			182-1131A-
T	Pseudoemiliania lacunosa	0.45	136.10	4.90	1	15X-CC, 19-22	131.17		16X-CC, 16-19	140.96
T	Reticulofenestra asanoi	0.88	251.60	0.92	1	28X-CC, 12-15	250.66		29X-CC, 0-2	252.50
	Brunhes/Matuyama	0.78	295.15	4.75
	Top of Jaramillo	0.99	333.50	4.80
T	Calcidiscus macintyrei	1.67	445.10	6.55	1	48X-CC, 29-32	438.47		49X-CC, 33-36	451.62
B	Globorotalia truncatulinoides	2	517.26	4.76	4	56X-CC, 28-31	512.50		57X-CC, 47-50	522.01
B	Globorotalia crassaformis	4.5	527.03	5.02	4	57X-CC, 47-50	522.01		58X-CC, 0-3	532.04
T	Globoquadrina dehiscens	5.8	527.05	5.02	4	57X-CC, 47-50	522.01		58X-CC, 0-3	532.04
B	C. macintyrei	12.3	545.09	4.71	1	59X-CC, 19-22	540.39		60X-CC, 0-2	549.80
T	Sphenolithus heteromorphus	13.6	573.62	4.81	1	62X-CC, 0-2	568.80		63X-CC, 0-3	578.40

Notes: T = top of taxon stratigraphic range, B = bottom of taxon stratigraphic range. Midpoint = the middle depth between the sample where the taxon occurs and the adjacent sample where it does not occur. Stratigraphic error = one-half the distance between these two samples. Datum level code = the number assigned to the datum level on Figure F5. Fossil groups: 1 = calcareous nannofossils, 4 = planktonic foraminifers.