Table 3. Polarity chron boundaries at Site 985.
| Polarity chron boundary | Hole 985A | Hole 985B | ||||
|---|---|---|---|---|---|---|
| Age (Ma) |
Depth (mbsf) |
Depth (mcd) |
Depth (mbsf) |
Depth (mcd) |
||
Brunhes/Mat. |
0.78 |
25.45 |
26.12 |
25.05 |
27.21 |
|
Top Jaramillo |
0.99 |
27.80 |
29.17 |
26.67 |
28.83 |
|
Base Jaramillo |
1.07 |
29.70 |
31.07 |
28.67 |
30.83 |
|
Top Olduvai |
1.77 |
47.25 |
49.72 |
46.25 |
49.66 |
|
Base Olduvai |
1.95 |
53.03 |
55.50 |
52.67 |
56.62 |
|
Top Reunion |
2.13 |
55.65 |
59.56 |
56.25 |
60.20 |
|
Base Reunion |
2.14 |
57.20 |
61.11 |
57.10 |
61.05 |
|
Mat./Gauss |
2.58 |
70.90 |
75.61 |
66.60 |
72.03 |
|
Top Kaena |
3.04 |
79.37 |
84.29 |
79.03 |
84.29 |
|
Base Kaena |
3.11 |
82.13 |
87.05 |
80.37 |
87.02 |
|
Top Mammoth |
3.22 |
85.53 |
91.07 |
84.23 |
90.88 |
|
Base Mammoth |
3.33 |
88.67 |
94.21 |
87.57 |
94.22 |
|
Gauss/Gilbert |
3.58 |
93.30 |
99.64 |
91.77 |
98.88 |
|
Top Cochiti |
4.18 |
98.40 |
105.50 |
|||
Base Cochiti |
4.29 |
100.40 |
107.41 |
|||
Top Nunivak |
4.48 |
103.60 |
110.61 |
|||
Base Nunivak |
4.62 |
105.95 |
112.96 |
|||
Top Sidjufjall |
4.80 |
107.67 |
114.68 |
|||
Base Sidjufjall |
4.89 |
110.38 |
119.02 |
|||
Top Thvera |
4.98 |
111.98 |
120.62 |
|||
Base Thvera |
5.23 |
116.82 |
125.64 |
|||
Base Gilbert |
5.89 |
131.95 |
139.79 |
|||
Base 3An.1n |
6.14 |
|||||
Top 3An.2n |
6.27 |
|||||
Top 3Ar |
6.57 |
146.10 |
153.94 |
|||
Base 3Ar |
6.94 |
154.00 |
161.84 |
|||
Note: Mat. = Matuyama.