Ojo, Oyewande; Thomson, Stuart N; Laó-Dávila, Daniel A (2021): Fission-track age determination of the Southern Malawi Rift from rock sample IE050000A (SE 18 1-2 AFT Age) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.937999, 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: -16.019267 * Longitude: 34.863583
Event(s):
Comment:
Sample Number: SE18-1-2
Position (#): 18
Area of Graticule Square: 6.400E-07
No. of Crystals: 20
Zeta Factor ±Error: 305.8 ±8.4
Rho d (% Relative Error): 1.511E+06
N d: 4836
Mineral: Apatite
Glass (U ppm): 15
Irradiation: UA-A39
Analyst: Oyewande Ojo
Locality: Malawi
Rock Type: Gneiss
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 24 | 51 | 60 | 1.67 | 0.50 | 6.25E5 | 1.33E6 | 0.4706 | 13.2 | 107.81 | 26.90 |
| 6 | 23 | 60 | 1.48 | 0.50 | 1.56E5 | 5.99E5 | 0.2609 | 5.9 | 59.99 | 27.56 |
| 12 | 27 | 50 | 1.96 | 0.50 | 3.75E5 | 8.44E5 | 0.4444 | 8.4 | 101.87 | 35.48 |
| 2 | 5 | 30 | 1.62 | 0.50 | 1.04E5 | 2.60E5 | 0.4000 | 2.6 | 91.76 | 76.82 |
| 6 | 24 | 80 | 2.13 | 0.50 | 1.17E5 | 4.69E5 | 0.2500 | 4.7 | 57.50 | 26.31 |
| 7 | 15 | 64 | 1.93 | 0.50 | 1.71E5 | 3.66E5 | 0.4667 | 3.6 | 106.92 | 49.06 |
| 9 | 19 | 81 | 1.92 | 0.50 | 1.74E5 | 3.67E5 | 0.4737 | 3.6 | 108.52 | 44.04 |
| 10 | 33 | 48 | 1.90 | 0.50 | 3.26E5 | 1.07E6 | 0.3030 | 10.7 | 69.63 | 25.23 |
| 41 | 88 | 72 | 1.86 | 0.50 | 8.90E5 | 1.91E6 | 0.4659 | 19.0 | 106.75 | 20.46 |
| 14 | 41 | 45 | 1.95 | 0.50 | 4.86E5 | 1.42E6 | 0.3415 | 14.1 | 78.41 | 24.39 |
| 8 | 37 | 35 | 2.06 | 0.50 | 3.57E5 | 1.65E6 | 0.2162 | 16.4 | 49.76 | 19.46 |
| 17 | 47 | 50 | 2.23 | 0.50 | 5.31E5 | 1.47E6 | 0.3617 | 14.6 | 83.03 | 23.64 |
| 30 | 66 | 50 | 1.97 | 0.31 | 9.38E5 | 2.06E6 | 0.4545 | 20.5 | 104.17 | 23.16 |
| 18 | 50 | 50 | 2.21 | 0.50 | 5.63E5 | 1.56E6 | 0.3600 | 15.5 | 82.64 | 22.86 |
| 10 | 22 | 40 | 1.84 | 0.50 | 3.91E5 | 8.59E5 | 0.4545 | 8.5 | 104.17 | 39.86 |
| 25 | 85 | 50 | 1.86 | 0.50 | 7.81E5 | 2.66E6 | 0.2941 | 26.4 | 67.59 | 15.52 |
| 4 | 23 | 50 | 1.91 | 0.50 | 1.25E5 | 7.19E5 | 0.1739 | 7.1 | 40.05 | 21.73 |
| 16 | 40 | 30 | 1.81 | 0.50 | 8.33E5 | 2.08E6 | 0.4000 | 20.7 | 91.76 | 27.29 |
| 30 | 86 | 100 | 2.32 | 0.50 | 4.69E5 | 1.34E6 | 0.3488 | 13.3 | 80.09 | 17.16 |
| 21 | 69 | 50 | 1.53 | 0.50 | 6.56E5 | 2.16E6 | 0.3043 | 21.4 | 69.93 | 17.56 |