Bergemann, Christian A; Gnos, Edwin; Berger, Alfons; Janots, Emilie; Whitehouse, Martin J (2019): Hydrothermal cleft monazite SIMS Th-Pb age data, central Alps [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.898689, Supplement to: Bergemann, CA et al. (2020): Dating tectonic activity in the Lepontine Dome and Rhone-Simplon Fault regions through hydrothermal monazite-(Ce). Solid Earth, 11(1), 199-222, https://doi.org/10.5194/se-11-199-2020
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Abstract:
Ion probe (SIMS) Th-Pb age measurements of hydrothermal fissure/cleft monazite from the central Alps. The sample area encompasses most of the Lepontine metamorphic dome, the eastern Rhone-Simplon Line, southern Gotthard Nappe and the Forcola Fault.
The ages directly date deformation during part of the exhumation and cooling history of the Lepontine dome and deformation along the Rhone-Simplon fault zone. The ages of all crystals range from ca. 19 to 5 Ma, with age distribution and internal crystal structure facilitating to distinguish between areas whose deformational history was dominated by distinct tectonic events or continuous exhumation.
Coverage:
Median Latitude: 46.407350 * Median Longitude: 8.488976 * South-bound Latitude: 46.071670 * West-bound Longitude: 8.034500 * North-bound Latitude: 46.622170 * East-bound Longitude: 9.305830
Minimum Elevation: 260.0 m * Maximum Elevation: 3150.0 m
Event(s):
BETT11 (Bettelbach, Niederwald, Goms) * Latitude: 46.427000 * Longitude: 8.195000 * Elevation: 1460.0 m * Method/Device: Multiple investigations (MULT)
Comment:
(1) The measurement of ²⁰⁴Pb is subject to an unresolvable molecular interference by ²³²Th¹⁴³Nd¹⁶O₂, which may result in an overestimation of common Pb concentrations. A correction was applied whenever the ²³²Th¹⁴³Nd¹⁶O₂ signal at mass 203.5 exceeded the average background signal on the ion-counting detector by three times its standard deviation.
(2) The f208 value is the percentage of unradiogenic/common lead ²⁰⁸Pb of the measurement's total ²⁰⁸Pb.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Bergemann, Christian A | |||
| 2 | Sample code/label | Sample label | Bergemann, Christian A | |||
| 3 | Sample code/label 2 | Sample label 2 | Bergemann, Christian A | Spot # | ||
| 4 | Uranium | U | mg/kg | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | |
| 5 | Thorium | Th | mg/kg | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | |
| 6 | Thorium/Uranium ratio | Th/U | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | Meas | |
| 7 | Lead | Pb | mg/kg | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | |
| 8 | Lead-204/Lead-208 ratio | 204Pb/208Pb | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | ||
| 9 | Lead-204/Lead-208, error, relative | 204Pb/208Pb e rel | % | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | 1 σ |
| 10 | Ratio | Ratio | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | 232Th143Nd16O2++/208Pb | |
| 11 | Error, relative | Error r | % | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | 232Th143Nd16O2++/208Pb; 1 σ |
| 12 | Parameter | Parameter | arbitrary units | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | f208 |
| 13 | Error, absolute | Error a | ± | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | f208; 1 σ |
| 14 | Lead-208/Thorium-232 ratio | 208Pb/232Th | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | Uncorrected | |
| 15 | Lead-208/Thorium-232, error, relative | 208Pb/232Th e rel | % | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | 1 σ |
| 16 | Original value | Orig val | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | 232Th/208Pb ratio (uncorrected) | |
| 17 | Original value | Orig val | Bergemann, Christian A | Secondary ion mass spectrometry (SIMS) | 232Th/208Pb, rel. error [%]; 1 σ | |
| 18 | Age, mineral | Age mineral | Ma | Bergemann, Christian A | Age, Lead-Thorium | Corrected |
| 19 | Age, error | Age e | ± | Bergemann, Christian A | Age, Lead-Thorium | 1 σ |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
8550 data points
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