Ojo, Oyewande; Thomson, Stuart N; Laó-Dávila, Daniel A (2021): Fission-track age determination of the Southern Malawi Rift from rock sample IE0500007 (Z 16 AFT Age) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.938004, In: Ojo, O et al. (2021): Thermotectonic history of rift-bounding faults using apatite fission track data from the Southern Malawi Rift [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.938031
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Published: 2021-11-10 • DOI registered: 2022-05-09
Keyword(s):
Related to:
Ojo, Oyewande; Thomson, Stuart N; Laó-Dávila, Daniel A (2024): Neogene–Quaternary initiation of the Southern Malawi Rift and linkage to the reactivated Carboniferous–Jurassic Shire Rift. Tectonophysics, 877, 230270, https://doi.org/10.1016/j.tecto.2024.230270
Coverage:
Latitude: -15.177900 * Longitude: 35.293267
Event(s):
Comment:
Sample Number: Z 16
Position (#): 18
Area of Graticule Square: 6.400E-07
No. of Crystals: 20
Zeta Factor ±Error: 305.8 ±8.4
Rho d (% Relative Error): 1.456E+06
N d: 4660
Mineral: Apatite
Glass (U ppm): 15
Irradiation: UA-A39
Analyst: Oyewande Ojo
Locality: Malawi
Rock Type: Syenite
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Fission-tracks, spontaneous | N s | # | Ojo, Oyewande | Fission-track | |
| 2 | Fission-tracks, induced | N i | # | Ojo, Oyewande | Fission-track | |
| 3 | Number of squares | N square | # | Ojo, Oyewande | Fission-track | Number of squares of the microscope grid in which tracks were counted |
| 4 | Diameter | Ø | µm | Ojo, Oyewande | Fission-track | Dpar - mean etch pit diameter parallel to the c-axis for each grain |
| 5 | Diameter | Ø | µm | Ojo, Oyewande | Fission-track | Dpar - mean etch pit diameter perpendicular to the c-axis for each grain |
| 6 | Fission-tracks, spontaneous, density | p s | 106 #/cm2 | Ojo, Oyewande | Fission-track | |
| 7 | Fission-tracks, induced, density | p i | 106 #/cm2 | Ojo, Oyewande | Fission-track | |
| 8 | Ratio | Ratio | Ojo, Oyewande | Calculated | p s/p i | |
| 9 | Uranium | U | mg/kg | Ojo, Oyewande | Fission-track | Derived from the ratio between N s/N i |
| 10 | Age, mineral | Age mineral | Ma | Ojo, Oyewande | Age, fission-track | Single grain age |
| 11 | Age, standard error | Age std e | ± | Ojo, Oyewande | Age, fission-track | 1 σ |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
220 data points
Data
| 1 N s [#] (Fission-track) | 2 N i [#] (Fission-track) | 3 N square [#] (Number of squares of the micr...) | 4 Ø [µm] (Dpar - mean etch pit diameter...) | 5 Ø [µm] (Dpar - mean etch pit diameter...) | 6 p s [106 #/cm2] (Fission-track) | 7 p i [106 #/cm2] (Fission-track) | 8 Ratio (p s/p i, Calculated) | 9 U [mg/kg] (Derived from the ratio betwee...) | 10 Age mineral [Ma] (Single grain age, Age, fissio...) | 11 Age std e [±] (1 σ, Age, fission-track) |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 58 | 100 | 1.77 | 0.50 | 2.34E5 | 9.06E5 | 0.2586 | 9.3 | 57.32 | 16.70 |
| 19 | 55 | 100 | 1.48 | 0.50 | 2.97E5 | 8.59E5 | 0.3455 | 8.9 | 76.45 | 20.48 |
| 10 | 28 | 48 | 1.96 | 0.50 | 3.26E5 | 9.12E5 | 0.3571 | 9.4 | 79.02 | 29.22 |
| 22 | 68 | 100 | 1.62 | 0.50 | 3.44E5 | 1.06E6 | 0.3235 | 10.9 | 71.63 | 17.71 |
| 25 | 75 | 60 | 2.13 | 0.50 | 6.51E5 | 1.95E6 | 0.3333 | 20.1 | 73.78 | 17.19 |
| 20 | 69 | 100 | 2.61 | 0.50 | 3.13E5 | 1.08E6 | 0.2899 | 11.1 | 64.21 | 16.43 |
| 23 | 67 | 48 | 1.93 | 0.50 | 7.49E5 | 2.18E6 | 0.3433 | 22.5 | 75.97 | 18.51 |
| 15 | 55 | 100 | 1.79 | 0.50 | 2.34E5 | 8.59E5 | 0.2727 | 8.9 | 60.43 | 17.70 |
| 20 | 59 | 100 | 2.01 | 0.50 | 3.13E5 | 9.22E5 | 0.3390 | 9.5 | 75.03 | 19.55 |
| 21 | 70 | 80 | 1.85 | 0.50 | 4.10E5 | 1.37E6 | 0.3000 | 14.1 | 66.44 | 16.66 |
| 20 | 56 | 100 | 2.00 | 0.50 | 3.13E5 | 8.75E5 | 0.3571 | 9.0 | 79.02 | 20.73 |
| 18 | 77 | 100 | 2.22 | 0.50 | 2.81E5 | 1.20E6 | 0.2338 | 12.4 | 51.83 | 13.67 |
| 13 | 39 | 60 | 1.91 | 0.50 | 3.39E5 | 1.02E6 | 0.3333 | 10.5 | 73.78 | 23.74 |
| 21 | 50 | 80 | 1.66 | 0.31 | 4.10E5 | 9.77E5 | 0.4200 | 10.1 | 92.83 | 24.31 |
| 7 | 25 | 70 | 1.65 | 0.50 | 1.56E5 | 5.58E5 | 0.2800 | 5.7 | 62.03 | 26.60 |
| 12 | 46 | 70 | 1.98 | 0.50 | 2.68E5 | 1.03E6 | 0.2609 | 10.6 | 57.82 | 18.83 |
| 28 | 79 | 56 | 1.72 | 0.50 | 7.81E5 | 2.20E6 | 0.3544 | 22.7 | 78.43 | 17.42 |
| 13 | 34 | 56 | 1.79 | 0.50 | 3.63E5 | 9.49E5 | 0.3824 | 9.8 | 84.56 | 27.70 |
| 19 | 65 | 100 | 1.90 | 0.50 | 2.97E5 | 1.02E6 | 0.2923 | 10.5 | 64.75 | 17.01 |
| 20 | 50 | 100 | 1.89 | 0.50 | 3.13E5 | 7.81E5 | 0.4000 | 8.0 | 88.44 | 23.56 |