Citation:

PANGAEA.938031

Name: Fission-track age determination of the Southern Malawi Rift from rock sample IE0500009 (SE 5-1 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: -16.313400 * Longitude: 35.073833

Event(s):

IE0500009 * Latitude: -16.313400 * Longitude: 35.073833 * Location: Malawi * Method/Device: Rock sample (ROCK)

Comment:

Sample Number: SE 5-1

Position (#): 18

Area of Graticule Square: 6.400E-07

No. of Crystals: 20

Zeta Factor ±Error: 305.8 ±8.4

Rho d (% Relative Error): 1.539+06

N d: 4925

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

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)
33	124	90	1.76	0.50	5.73E5	2.15E6	0.2661	21.0	62.32	12.36
89	263	56	1.83	0.50	2.48E6	7.34E6	0.3384	71.5	79.14	10.01
27	100	70	1.59	0.50	6.03E5	2.23E6	0.2700	21.8	63.22	13.85
7	21	24	1.90	0.50	4.56E5	1.37E6	0.3333	13.3	77.96	34.11
10	35	30	1.87	0.50	5.21E5	1.82E6	0.2857	17.8	66.88	24.07
15	54	40	1.84	0.50	5.86E5	2.11E6	0.2778	20.6	65.04	19.09
9	35	49	1.88	0.50	2.87E5	1.12E6	0.2571	10.9	60.23	22.59
24	82	64	1.74	0.50	5.86E5	2.00E6	0.2927	19.5	68.51	16.04
25	77	100	1.69	0.50	3.91E5	1.20E6	0.3247	11.7	75.95	17.64
35	138	70	1.77	0.50	7.81E5	3.08E6	0.2536	30.0	59.41	11.39
22	71	42	1.75	0.50	8.19E5	2.64E6	0.3099	25.7	72.50	17.83
10	43	50	1.89	0.50	3.13E5	1.34E6	0.2326	13.1	54.49	19.21
30	80	100	1.68	0.50	4.69E5	1.25E6	0.3750	12.2	87.64	18.96
30	145	100	1.92	0.31	4.69E5	2.27E6	0.2069	22.1	48.50	9.84
32	144	80	1.91	0.50	6.25E5	2.81E6	0.2222	27.4	52.08	10.31
35	108	100	1.75	0.50	5.47E5	1.69E6	0.3241	16.4	75.81	14.93
16	42	56	1.60	0.50	4.46E5	1.17E6	0.3810	11.4	89.03	26.30
16	98	60	1.58	0.50	4.17E5	2.55E6	0.1633	24.9	38.30	10.40
17	45	70	1.74	0.50	3.80E5	1.00E6	0.3778	9.8	88.29	25.28
8	28	30	1.92	0.50	4.17E5	1.46E6	0.2857	14.2	66.88	26.89