Citation:

PANGAEA.938031

Name: Fission-track age determination of the Southern Malawi Rift from rock sample IE0500002 (LM 9 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: -14.573967 * Longitude: 35.167867

Event(s):

IE0500002 * Latitude: -14.573967 * Longitude: 35.167867 * Location: Malawi * Method/Device: Rock sample (ROCK)

Comment:

Sample Number: LM 9

Position (#): 18

Area of Graticule Square: 6.400E-07

No. of Crystals: 20

Zeta Factor ±Error: 305.8 ±8.4

Rho d (% Relative Error): 1.566E+06

N d: 5013

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)
70	149	100	1.68	0.50	1.09E6	2.33E6	0.4698	22.3	111.52	16.52
38	46	50	1.82	0.50	1.19E6	1.44E6	0.8261	13.8	194.83	43.13
50	91	100	1.67	0.50	7.81E5	1.42E6	0.5495	13.6	130.24	23.28
95	228	100	1.79	0.50	1.48E6	3.56E6	0.4167	34.1	99.00	12.47
92	167	100	1.79	0.50	1.44E6	2.61E6	0.5509	25.0	130.58	17.43
50	94	100	1.76	0.50	7.81E5	1.47E6	0.5319	14.1	126.12	22.42
55	93	100	2.20	0.50	8.59E5	1.45E6	0.5914	13.9	140.07	24.22
49	138	100	1.86	0.50	7.66E5	2.16E6	0.3551	20.7	84.46	14.29
67	104	100	1.91	0.50	1.05E6	1.63E6	0.6442	15.6	152.44	24.34
30	66	100	2.10	0.50	4.69E5	1.03E6	0.4545	9.9	107.93	24.00
58	131	100	1.75	0.50	9.06E5	2.05E6	0.4427	19.6	105.15	16.90
118	211	100	1.80	0.50	1.84E6	3.30E6	0.5592	31.6	132.53	15.78
87	211	100	1.69	0.50	1.36E6	3.30E6	0.4123	31.6	97.98	12.85
79	149	100	1.86	0.31	1.23E6	2.33E6	0.5302	22.3	125.72	17.92
108	161	100	1.90	0.50	1.69E6	2.52E6	0.6708	24.1	158.65	20.33
86	176	100	1.70	0.50	1.34E6	2.75E6	0.4886	26.3	115.95	15.67
90	184	100	1.63	0.50	1.41E6	2.88E6	0.4891	27.5	116.07	15.35
44	142	90	1.80	0.50	7.64E5	2.47E6	0.3099	23.6	73.77	12.93
113	262	100	1.51	0.50	1.77E6	4.09E6	0.4313	39.2	102.45	11.96
34	75	100	2.05	0.50	5.31E5	1.17E6	0.4533	11.2	107.64	22.50