Citation:

PANGAEA.938031

Name: Fission-track age determination of the Southern Malawi Rift from rock sample IE050000B (SE 17 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: -16.019833 * Longitude: 34.860800

Event(s):

IE050000B * Latitude: -16.019833 * Longitude: 34.860800 * Location: Malawi * Method/Device: Rock sample (ROCK)

Comment:

Sample Number: SE 17

Position (#): 18

Area of Graticule Square: 6.400E-07

No. of Crystals: 20

Zeta Factor ±Error: 305.8 ±8.4

Rho d (% Relative Error): 1.525E+06

N d: 4880

Mineral: Apatite

Glass (U ppm): 15

Irradiation: UA-A39

Analyst: Oyewande Ojo

Locality: Malawi

Rock Type: Granitic dyke

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

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)
8	27	42	1.77	0.50	2.98E5	1.00E6	0.2963	9.9	68.72	27.74
36	141	80	1.83	0.50	7.03E5	2.75E6	0.2553	27.1	59.26	11.22
20	76	100	1.52	0.50	3.13E5	1.19E6	0.2632	11.7	61.07	15.46
14	35	100	1.76	0.50	2.19E5	5.47E5	0.4000	5.4	92.60	29.42
11	56	100	1.61	0.50	1.72E5	8.75E5	0.1964	8.6	45.64	15.12
30	125	60	1.99	0.50	7.81E5	3.26E6	0.2400	32.0	55.72	11.46
17	114	49	1.69	0.50	5.42E5	3.64E6	0.1491	35.8	34.68	9.08
30	89	100	1.67	0.50	4.69E5	1.39E6	0.3371	13.7	78.12	16.67
17	103	81	1.87	0.50	3.28E5	1.99E6	0.1650	19.5	38.37	10.12
15	48	64	1.71	0.50	3.66E5	1.17E6	0.3125	11.5	72.46	21.55
12	40	80	1.77	0.50	2.34E5	7.81E5	0.3000	7.7	69.57	23.00
28	81	100	1.85	0.50	4.38E5	1.27E6	0.3457	12.4	80.10	17.74
14	94	81	1.72	0.50	2.70E5	1.81E6	0.1489	17.8	34.63	9.98
30	113	100	1.77	0.31	4.69E5	1.77E6	0.2655	17.4	61.61	12.80
22	59	100	1.94	0.50	3.44E5	9.22E5	0.3729	9.1	86.36	21.74
23	66	100	1.75	0.50	3.59E5	1.03E6	0.3485	10.1	80.75	19.71
12	60	100	1.94	0.50	1.88E5	9.38E5	0.2000	9.2	46.47	14.76
14	64	100	1.72	0.50	2.19E5	1.00E6	0.2188	9.8	50.81	15.07
20	57	80	1.81	0.50	3.91E5	1.11E6	0.3509	11.0	81.30	21.28
16	70	100	1.68	0.50	2.50E5	1.09E6	0.2286	10.8	53.08	14.80