Teichert, Barbara M A; Eisenhauer, Anton; Bohrmann, Gerhard; Haase-Schramm, Alexandra; Bock, Barbara; Linke, Peter (2003): (Table 2) U and Th isotopic compositions of authigenic carbonates, bottom- and pore water and 230Th/234U ages of authigenic carbonates [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.769895, In supplement to: Teichert, BMA et al. (2003): U/Th systematics and ages of authigenic carbonates from Hydrate Ridge, Cascadia Margin: Recorders of fluid flow variations. Geochimica et Cosmochimica Acta, 67(20), 3845-3857, https://doi.org/10.1016/S0016-7037(03)00128-5
Always quote citation above when using data! You can download the citation in several formats below.
Related to:
Teichert, Barbara M A; Eisenhauer, Anton; Bohrmann, Gerhard; Haase-Schramm, Alexandra; Bock, Barbara; Linke, Peter (2004): Erratum to "U/Th Systematics and ages of authigenic carbonates from Hydrate Ridge, Cascadia Margin: Recorders of fluid flow variations" [Geochimica et Cosmochimica Acta 67(20), 3845-3857]. Geochimica et Cosmochimica Acta, 68(10), 2401-2403, https://doi.org/10.1016/j.gca.2004.01.001
Coverage:
Median Latitude: 44.568167 * Median Longitude: -125.128709 * South-bound Latitude: 44.448233 * West-bound Longitude: -125.153000 * North-bound Latitude: 44.674333 * East-bound Longitude: -125.030317
Date/Time Start: 1996-06-01T21:58:00 * Date/Time End: 2000-08-09T00:00:00
Minimum Elevation: -922.2 m * Maximum Elevation: -577.0 m
Event(s):
3424-4-A * Latitude: 44.568330 * Longitude: -125.152830 * Elevation: -812.0 m * Campaign: AT3-35B * Basis: Atlantis (1997) * Method/Device: Manipulator arm (ROV_MA)
3428-6-A * Latitude: 44.568167 * Longitude: -125.150667 * Elevation: -774.0 m * Campaign: AT3-35B * Basis: Atlantis (1997) * Method/Device: Manipulator arm (ROV_MA)
3429-3-A * Latitude: 44.568333 * Longitude: -125.152833 * Elevation: -772.0 m * Campaign: AT3-35B * Basis: Atlantis (1997) * Method/Device: Manipulator arm (ROV_MA)
Comment:
Notes: All given statistical errors are two standard deviations of the mean (2Sigma). The used decay constants are: Lamda234U = 2.8262 x 10**-6 a**-1 (Cheng et al., 2000b); Lamda238U = 1.55125 x 10**-10 a**-1 (Jaffey et al., 1971); Lamda230Th = 9.158 x 10**-6 a**-1 (Cheng et al., 2000b). Corrections for U and Th chemistry blanks are negligible. Column 2: Subsamples of one carbonate sample are represented by numbers following letters. Samples labeled 'a' and 'b' are different aliquots of the same sample before dissolution. Column 11: The measured 234U/238U activity ratios (delta234U(0)) are presented as deviation permil from the equilibrium value, delta234U(0) = {(234U/238U) x (lamda234/lamda238) - 1} x 1000 (Edwards et al., 1987). Column 13: The decay-corrected 234U/238U activity ratios (delta234U(T)) are calculated from the Th corrected ages (column 10) delta234U(T) = delta234U(0) x e**(lamda234*t) (Edwards et al., 1987). Column 17: Maximum ages are calculated using the equation: (230Th/238U) = 1 - e**(lamda230*t) + [delta234U(0)] - 0.001 x [lamda230/(230Th - lamda234)] x [1 - e((lamda234 - lamda230)*t)]. Column 19: Best age estimate corrected for the effect of detrital Th. The uncertainty on the age correction is deduced from an uncertainty of +-50% on the 230Th/232Th activity ratio of 1.92.
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
534 data points