Alkali basalts and enclosed ultramafic xenoliths near Ushuaia, Tierra Del Fuego, Argentina

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Table 1 Major element oxide compositions (wt %) of fuegian alkali basalts

	SiO₂	TiO₂	Al₂O₃	Fe₂O₃	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	LOI
P1	37.15	2.39	11.52	13.07	0.29	9.02	12.02	2.84	2.05	2.53	6.60
P2	38.95	2.51	11.75	12.76	0.25	9.79	11.51	3.21	1.42	2.01	5.40
P 3	43.90	2.61	13.19	12.46	0.23	6.27	8.96	4.03	2.27	1.36	3.80
P 22	41.04	2.47	12.23	13.39	0.23	9.19	9.90	4.18	0.95	1.63	3.89
P V-01	37.87	2.38	11.66	14.08	0.28	7.96	12.65	2.81	2.24	2.57	3.44
A 1	40.25	2.70	12.91	12.91	0.23	7.42	10.09	2.86	1.94	1.35	7.00
A 2	40.83	2.81	12.77	14.45	0.23	6.96	10.47	2.20	2.49	1.60	3.90
A TF-10	40.52	2.76	12.73	14.29	0.22	6.87	10.35	2.23	2.58	1.57	4.23
A TF-12	40.40	2.75	12.69	14.27	0.23	6.95	10.62	2.07	2.30	1.53	4.26
E 1	43.63	2.80	13.53	13.04	0.24	4.83	8.27	3.32	1.05	1.36	7.40