Il METODO DELLE TRACCE DI FISSIONE: PRINCIPI E ... - inrim

Datazione del vetro
del deserto libico
Sample Heating ρ S NS ρ I NI p(χ2) DS/DI Age (± 1σ)
(cm -2 ) (cm -2 ) (%) (Ma)
B 2a ambient 12,600 830 75,900 1,367 < 1 0.97 26.3 ± 1.4
B 2b ambient 13,900 538 81,600 1,475 < 1 0.95 27.0 ± 2.0
25° 17’ 53” N 5 h 220°C 12,900 645 72,400 1,316 < 1 1.02 28.0 ± 1.9
25° 32’ 56” E 5 h 270°C 15,500 897 80,800 1,487 < 1 1.04 30.2 ± 2.0
5 h 370°C 10,800 543 59,800 1,091 < 1 0.99 28.5 ± 2.5
B 6 ambient 10,300 798 62,800 1,130 < 1 0.96 26.0 ± 1.8
25° 17’ 42” N 5 h 220°C 11,700 675 65,200 1,484 2.3 1.02 28.2 ± 1.4
25° 33’ 24” E 5 h 270°C 10,700 1,158 66,900 1,199 5.6 0.99 25.3 ± 1.3
5 h 320°C 11,500 797 61,600 1,128 < 1 1.00 29.4 ± 2.0
5 h 370°C 9,700 564 55,100 1,001 < 1 0.99 27.9 ± 2.2
C 2-4 ambient 9,200 570 50,600 1,154 2.5 0.93 28.8 ± 1.9
25° 19’ 27” N 5 h 270°C 12,200 564 66,900 1,221 3.2 1.02 28.7 ± 1.9
25° 34’ 23” E 5 h 320°C 10,100 554 54,900 1,057 90 0.98 29.4 ± 1.8
5 h 370°C 8,600 333 47,800 1,504 < 1 0.99 28.4 ± 2.2
D 1 ambient 5,900 592 32,000 1,192 4.8 0.96 29.0 ± 1.8
25° 26’ 39” N
25° 36’ 56” E
L’LDG è una tectite?
Oasis – 18 km
BP – 2 km
Kebira – 30 km