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Table T9. Closed system age interpretations for U-Th dated samples, Expedition 325. (See table notes.)

Core, section,
interval (cm)
Age (k.y. BP) [234U/238U]i
325-
M0031A-16R-1, 0–3 25.13 0.24 1.1413 0.0008
M0032A-8R-3, 0–2 20.42 0.24 1.1411 0.0007
M0032A-18R-2, 8–10 61.10 0.80 1.1442 0.0009
M0033A-15R-2, 5–7 31.07 0.32 1.1413 0.0008
M0034A-13R-2, 6–8 11.18 0.11 1.1471 0.0008
M0035A-20R-2, 0–2 21.33 0.20 1.1418 0.0008
M0036A-18R-2, 8–10 20.82 0.19 1.1423 0.0008
M0037A-7R-2, 2–4 12.54 0.11 1.1411 0.0008
M0039A-16R-2, 8–10 18.82 0.15 1.1439 0.0008
M0040A-8R-2, 5–8 24.73 0.22 1.1394 0.0008
M0042A-24R-2, 8–9 169.30 4.50 1.1533 0.0022
M0043A-18R-2, 2–4 20.28 0.20 1.1419 0.0008
M0046A-11R-1, 10–11 17.19 0.16 1.1446 0.0008
M0047A-11R-2, 5–6 20.78 0.19 1.1430 0.0008
M0049B-9R-2, 4–5 15.80 0.15 1.1515 0.0008
M0053A-25R-2, 2–3 23.65 0.24 1.1406 0.0008
M0054B-4R-2, 2–3 20.08 0.18 1.1434 0.0008
M0055A-5R-3, 0–1 25.05 0.25 1.1403 0.0008
M0056A-13R-2, 2–3 84.10 1.10 1.1347 0.0010
M0057A-15R-3, 9–10 No closed system age possible

Notes: Ages are presented in thousands of years before AD 1950 so as to be comparable to calibrated radiocarbon ages. [234U/238U]i is [234U/238U] extrapolated back to the time of coral growth.

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