Citation:

PANGAEA.938031

Name: Fission-track age determination of the Southern Malawi Rift from rock sample IE050000E (SW 13 AFT Age)
Published: 2021-11-10
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Apatite fission track (AFT); low-temperature thermochronology; Malawi Rift; Rift initiation; Shire Rift; Strain accommodation

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Published: 2021-11-10 • DOI registered: 2022-05-09

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Keyword(s):

Apatite fission track (AFT); low-temperature thermochronology; Malawi Rift; Rift initiation; Shire Rift; Strain accommodation

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: -15.847450 * Longitude: 34.367233

Event(s):

IE050000E * Latitude: -15.847450 * Longitude: 34.367233 * Location: Malawi * Method/Device: Rock sample (ROCK)

Comment:

Sample Number: SW 13

Position (#): 18

Area of Graticule Square: 6.400E-07

No. of Crystals: 20

Zeta Factor ±Error: 305.8 ±8.4

Rho d (% Relative Error): 1.470E+06

N d: 4704

Mineral: Apatite

Glass (U ppm): 15

Irradiation: UA-A39

Analyst: Oyewande Ojo

Locality: Malawi

Rock Type: Felsic Dike

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:

219 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

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)
9	26	49	1.77	0.50	2.87E5	8.29E5	0.3462	8.5	77.34	30.01
16	48	80	1.48	0.50	3.13E5	9.38E5	0.3333	9.6	74.49	21.63
12	34	56	1.96	0.50	3.35E5	9.49E5	0.3529	9.7	78.84	26.59
6	27	50	1.62	0.50	1.88E5	8.44E5	0.2222	8.6	49.75	22.51
4	52	70	2.13	0.50	8.93E4	1.16E6	0.0769	11.8	17.27	8.98
5	22	25	2.61	0.50	3.13E5	1.38E6	0.2273	14.0	50.88	25.26
10	30	40	1.93	0.50	3.91E5	1.17E6	0.3333	12.0	74.49	27.30
6	25	42	1.79	0.50	2.23E5	9.30E5	0.2400	9.5	53.72	24.48
5	24	40	2.01	0.50	1.95E5	9.38E5	0.2083	9.6	46.66	22.98
8	21	35	1.85	0.50	3.57E5	9.38E5	0.3810	9.6	85.06	35.44
2	28	50	2.00	0.50	6.25E4	8.75E5	0.0714	8.9	16.03	11.75
6	41	100	2.22	0.50	9.38E4	6.41E5	0.1463	6.5	32.81	14.38
4	13	20	1.91	0.50	3.13E5	1.02E6	0.3077	10.4	68.79	39.39
16	37	54	1.66	0.31	4.63E5	1.07E6	0.4324	10.9	96.47	29.02
6	16	20	1.65	0.50	4.69E5	1.25E6	0.3750	12.8	83.74	40.17
3	20	25	1.98	0.50	1.88E5	1.25E6	0.1500	12.8	33.63	20.85
6	18	24	1.72	0.50	3.91E5	1.17E6	0.3333	12.0	74.49	35.19
0	16	32	1.79	0.50	0.00E0	7.81E5	0.0000	8.0	0.00
12	29	60	1.90	0.50	3.13E5	7.55E5	0.4138	7.7	92.34	31.83
10	27	50	1.89	0.50	3.13E5	8.44E5	0.3704	8.6	82.71	30.73