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Robertson Speleothem U-Th dating results for samples analyzed at the Geologic...
U decay constants: λ238=1.55125x10-10 (Jaffey et al., 1971) and λ234= 2.82x10-6 (Cheng et al., 2013).Th decay constant: λ230=9.1705x10-6 (Cheng et al., 2013).Corrected 230Th... -
Measured isotope activity ratios, calculated ages and monte-carlo derived age...
A total of 32 230Th ages were measured along the growth axis of SIB-4 stalagmite. 100-200 mg of calcite powder was drilled per sample in a laminar-flow hood following growth... -
Uranium-Thorium series of sediment core Arc7-E25
*230Thxs is calculated by the subtraction of mean activity value of 234U from the total 230Th. -
Measured SC02 U/Th isotope activity ratios, calculated ages and monte-carlo d...
U-Th ages were calculated using the initial detrital 230Th/232Th value of 111 ± 41 ppm, which was previously calculated for SC02 based on two isochrons measured in separate... -
U-Th isotopes and Fe-Mn composition of layers from the bottom side of Mn nodu...
Attempts have been made to study the entire growth history of a manganese nodule from the northern part of Peru Basin in the Pacific using radiochemical profiles of 230Th232Th,... -
U-Th isotopes and Fe-Mn composition of layers from the top side of Mn nodule ...
Attempts have been made to study the entire growth history of a manganese nodule from the northern part of Peru Basin in the Pacific using radiochemical profiles of 230Th232Th,... -
Whole-rock U-Th and Sr-Nd isotope compositions of Ilopango TB suite (Table S9)
This dataset includes results from U-series and Sr-Nd whole-rock isotope compositions of the last four explosive silicic eruptions from Ilopango caldera in El Salvador (TBJ,... -
Thorium and Uranium in sediment core PS1533-3
This dataset merges information from five sources and adds newly calculated data. Original radionuclide data and sand content are taken from Frank and Eisenhauer 1996. The age... -
Thorium and Uranium in sediment profile GIK23065
long sample intervals; depthcorr is mean depth on common depth scale (+16 cm offset for GIK23065-3) -
Thorium / uranium dating of stalagmite PR-LA-1 (Cueva Larga, Puerto Rico)
Activity ratios were corrected for initial Th assuming an detrital weight ratio 232Th/238U = 0.13 ± 0.04 (corresponding to an activity ratio of the detritus in secular... -
Thorium and Uranium in sediment cores PS2185-3 and PS2185-6
The 230Thex outlier at 277.5 cm is due to an anomalous 234U/238U of 0.58 (!);Probably diagenetic effect on U activities, as a bit below (297.5 cm) 234U/238U activity ratios... -
Thorium and Uranium in sediment core PS72/396-5
Offset between PS72/396-5 and PS72/396-3 is +4 cm. -
Thorium and Uranium in sediment core PS51/038-4
This dataset has no description
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Uranium series isotopes and dating of stalagmite C09-2 from Closani Cave
Ages were calculated using the half-lives of Cheng et al. (2000). Correction for detrital contamination assumes a 232Th/238U weight ratio of 3.8 ± 1.9 and 230Th, 234U and 238U... -
(Table 1) Activity ratios and respective uncertainties for the five fossil AQ...
This dataset has no description
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(Table S2) Uranium/Thorium isotopic composition of in situ Porites microatoll...
Uranium/Thorium isotopic composition of 72 in situ Porites microatolls from five islands in French Polynesia. Recommendations of Dutton et al. were followed for the... -
(Table S4) 230Th/U-dating of coral BON-39-A
This dataset has no description
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(Tables 1, page 354) Chemical composition of ferromanganese crusts from the G...
Isotopic analyses for U and Th isotopes were conducted using isotope tracer and alpha spectrometric techniques..From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine... -
(Table 4) Uranium isotope determination of bedrock collected near Exeter, New...
Errors are internal analytical uncertainties (2SE). The estimated external relative analytical uncertainties (RSE) were calculated fromreplicate analysis of rock standards and... -
(Table A1) Open-system age model and Uranium/Thorium analyses of coral sample...
This dataset has no description