Citation:

PANGAEA.938031

Name: Fission-track age determination of the Southern Malawi Rift from rock sample IE050000C (SW 7-1 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: -15.876417 * Longitude: 34.387933

Event(s):

IE050000C * Latitude: -15.876417 * Longitude: 34.387933 * Location: Malawi * Method/Device: Rock sample (ROCK)

Comment:

Sample Number: SW 7-1

Position (#): 18

Area of Graticule Square: 6.400E-07

No. of Crystals: 20

Zeta Factor ±Error: 305.8 ±8.4

Rho d (% Relative Error): 1.484E+06

N d: 4748

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	METHOD/DEVICE: Fission-track
2	Fission-tracks, induced	N i	#	Ojo, Oyewande	Fission-track	METHOD/DEVICE: 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	METHOD/DEVICE: Fission-track
7	Fission-tracks, induced, density	p i	10⁶ #/cm²	Ojo, Oyewande	Fission-track	METHOD/DEVICE: 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 [#] (METHOD/DEVICE: Fission-track,...)	2 N i [#] (METHOD/DEVICE: 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] (METHOD/DEVICE: Fission-track,...)	7 p i [10⁶ #/cm²] (METHOD/DEVICE: 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	109	80	1.77	0.50	6.45E5	2.13E6	0.3028	21.5	68.33	13.74
8	35	30	1.48	0.50	4.17E5	1.82E6	0.2286	18.4	51.66	20.31
14	53	70	1.96	0.50	3.13E5	1.18E6	0.2642	12.0	59.66	18.02
21	59	36	1.62	0.50	9.12E5	2.56E6	0.3559	25.9	80.26	20.55
18	40	90	2.13	0.50	3.13E5	6.94E5	0.4500	7.0	101.31	28.93
16	28	36	2.61	0.50	6.94E5	1.22E6	0.5714	12.3	128.37	40.43
25	43	20	1.93	0.50	1.95E6	3.36E6	0.5814	34.0	130.59	33.09
18	38	16	1.79	0.50	1.76E6	3.71E6	0.4737	37.5	106.59	30.68
9	32	50	2.01	0.50	2.81E5	1.00E6	0.2813	10.1	63.50	24.04
27	85	70	1.85	0.50	6.03E5	1.90E6	0.3176	19.2	71.68	15.99
20	82	50	2.00	0.50	6.25E5	2.56E6	0.2439	25.9	55.11	13.85
15	69	42	2.22	0.50	5.58E5	2.57E6	0.2174	25.9	49.14	14.08
28	76	81	1.91	0.50	5.40E5	1.47E6	0.3684	14.8	83.06	18.54
40	83	56	1.66	0.31	1.12E6	2.32E6	0.4819	23.4	108.43	21.14
20	58	48	1.65	0.50	6.51E5	1.89E6	0.3448	19.1	77.77	20.31
21	48	30	1.98	0.50	1.09E6	2.50E6	0.4375	25.3	98.51	25.96
10	29	50	1.72	0.50	3.13E5	9.06E5	0.3448	9.2	77.77	28.62
8	19	25	1.79	0.50	5.00E5	1.19E6	0.4211	12.0	94.84	40.08
10	34	50	1.90	0.50	3.13E5	1.06E6	0.2941	10.7	66.39	23.97
13	34	56	1.89	0.50	3.63E5	9.49E5	0.3824	9.6	86.18	28.23