Fission track dating of obsidian source samples from the Willaumez Peninsula, Papua New Guinea and eastern Australia Author Bonetti, R. Istituto di Fisica Generale Applicata dell' Universita' di Milano, Via Celoria, 16 20133 Milano, Italy Roberto.Bonetti@mi.infn.it & robint@amsg.austmus.gov.au Author Di Cesare, P. Istituto di Fisica Generale Applicata dell' Universita' di Milano, Via Celoria, 16 20133 Milano, Italy Author Guglielmetti, A. Istituto di Fisica Generale Applicata dell' Universita' di Milano, Via Celoria, 16 20133 Milano, Italy Author Malerba, F. Istituto di Fisica Generale Applicata dell' Universita' di Milano, Via Celoria, 16 20133 Milano, Italy Author Migliorini, E. Istituto di Fisica Generale Applicata dell' Universita' di Milano, Via Celoria, 16 20133 Milano, Italy Author Oddone, M. Dipartimento di Chimica dell'Universita' di Pavia, Via Taramelli, 12 27100 Pavia, Italy Author Bird, J. R. Australian Nuclear Science and Technology Organization, Menai NSW 2234, Australia Author Torrence, Robin Division of Anthropology, The Australian Museum, 6 College Street, Sydney NSW 2000, Australia Author Bultitude, R. J. Department of Mines and Energy, 61 Mary Street, Brisbane QLD 4000, Australia text Records of the Australian Museum 1998 1998-11-25 50 3 277 284 https://journals.australian.museum/bonetti-et-al-1998-rec-aust-mus-503-277284/ journal article 10.3853/j.0067-1975.50.1998.1286 0067-1975 4653130

Table 3. Results of fission track dating of Australian obsidian samples; ns' nj+s represent the number of spontaneous and induced+spontaneous tracks being counted, respectively. See Table 2 for constants. (*) In this case the corrected age is determined by using the correction curve of sample AU602.

	spontaneous		induced	neutron		apparentheatingcorrected
sample	ns trackdensity (t) (x104tcm-2)	lli+s (t)	trackdensity (x105tcm-2)	fluence (X1015 ncm-2)	Ds/Di	age±0" (Ma)	hours at 140°C	age±0" (Ma)
Far North Queensland (FNQ)
AU602	2533 8.17±0.16	3736	3.51 ±0.07	2.431 ±0.016	0.63 ±0.06	33.9± 1.1	60	86.9±3.8
AU603	1390 7.25 ± 0.19	3666	3.23 ±0.07	2.431 ± 0.016	0.54 ± 0.05	32.7 ± 1.3	(*)	88.5 ± 9.0
AU612	278 10.86±0.65	1002	4.13 ±0.15	2.431 ±0.016	0.68±0.07	38.2±3.2	(*)	92.3 ± 10.6
AU662	122 4.24±0.38	608	1.69 ±0.09	1.644 ±0.014	0.53 ±0.10	24.7 ± 3.1	70	85.5 ± 5.9
New South Wales (NSW
AUlOl	273 2.32±	0.14	8982.57	±0.092.431	±0.016	0.79±0.06	13.1	TODO
AUl02	95 1.48±	0.15	7602.23	±0.092.431	0.016	TODO	9.7	TODO