Kelley, Katherine A; Plank, Terry; Farr, Linda; Ludden, John N; Staudigel, Hubert (2005): (Appendix Table 2) Trace element analyses of ODP Hole 185-801C basement carbonates [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.707920, In supplement to: Kelley, KA et al. (2005): Subduction cycling of U, Th, and Pb. Earth and Planetary Science Letters, 234(3-4), 369-383, https://doi.org/10.1016/j.epsl.2005.03.005
Always quote citation above when using data! You can download the citation in several formats below.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 18.642300 * Longitude: 156.359800
Date/Time Start: 1999-04-29T08:30:00 * Date/Time End: 1999-05-19T13:30:00
Minimum DEPTH, sediment/rock: 625.01 m * Maximum DEPTH, sediment/rock: 881.79 m
Event(s):
185-801C * Latitude: 18.642300 * Longitude: 156.359800 * Date/Time Start: 1999-04-29T08:30:00 * Date/Time End: 1999-05-19T13:30:00 * Elevation: -5674.0 m * Penetration: 935.7 m * Recovery: 160.03 m * Location: North Pacific Ocean * Campaign: Leg185 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 339.3 m cored; 2.1 m drilled; 47.2 % recovery
Comment:
Element analyses blanks = below detection limit. Concentrations determined using a Merchantek/New Wave 213 nm Nd:YAG laser coupled with a VG/TJA PlasmaQuad ExCell ICP-MS at Boston University. Signals were generated from 50 micron rasters in thin sections, at laser energies of 1.2-2.0 mJ/pulse, at 10 pulses/s and 10-20 micron/s scan speed. These laser conditions typically resulted in ~ 100,000 cps for 139La in NIST 612 for a 50 micron spot. Signals were reduced by subtracting a blank (laser-off), correcting for yield using 43Ca as an internal standard (using the microprobe analyses for Ca in Table X), and calibrating to NIST 612 (values in Pearce et al., 1996). Spot-to-spot precision is <4% RSD for Sr, REE and U; 5-10% RSD for the other elements. Slow scan speeds, high energies, and transparent targets sometimes led to ablation of the underlying thin section glass. Analyses of 4 thin section glasses are given at the end of the table, and show significant concentrations of Rb, Ba and Pb. The effect of thin section contamination on U is small, however, as thin section glass is poor in U (< 0.5 ppm). Contamination may be calculated from the relatively constant Rb/U ratio in the thin section glass, and asusming zero Rb in the carbonate. These calculations reveal a trivial effect (< 4%, within analytical precision) on U for 63 out of the 83 analyses. Most of the others result in < 0.1 ppm absolute contamination, a small absolute effect. The only analyses with signficant calculated contamination (> 20% and > 0.2 ppm U) are for inclusion-bearing calcite, where the Rb concentrations may be real.
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2220 data points
Download Data
View dataset as HTML (shows only first 2000 rows)