Single grain noble gas analysis of Antarctic micrometeorites by stepwise heating method with a newly constructed miniature furnace

Earth, Planets and Space

Table 3. Kr isotopic compositions of snow Antarctic micrometeorites extracted at 1600°C.

Name		⁸⁴Kr*		⁸⁰Kr/⁸⁴Kr		⁸²Kr/⁸⁴Kr		⁸³Kr/⁸⁴Kr		⁸⁶Kr/⁸⁴Kr
D03IB05		0.023		0.038		0.185		0.204		0.278
	±	0.004	±	0.012	±	0.022	±	0.022	±	0.040
D03IB10		0.045		0.044		0.213		0.225		0.339
	±	0.010	±	0.015	±	0.040	±	0.037	±	0.042
D03IB18		0.023		0.042		0.160		0.224		0.328
	±	0.008	±	0.028	±	0.080	±	0.059	±	0.087
D03IB19		0.195		0.038		0.191		0.202		0.306
	±	0.029	±	0.013	±	0.012	±	0.018	±	0.028
D03IB30		0.061		0.043		0.183		0.196		0.315
	±	0.013	±	0.012	±	0.033	±	0.030	±	0.045
D03IB45		0.040		0.036		0.187		0.202		0.317
	±	0.007	±	0.011	±	0.021	±	0.044	±	0.030
D05IB20		0.007		0.039		0.219		0.168		0.318
	±	0.003	±	0.029	±	0.085	±	0.096	±	0.103
D05IB27		0.0018		0.037		0.204		0.206		0.320
	±	0.0003	±	0.010	±	0.029	±	0.025	±	0.038
D05IB74		0.015		0.045		0.194		0.210		0.314
	±	0.002	±	0.009	±	0.035	±	0.052	±	0.032