Earth, Planets and Space

Table 1 Compositions of inferred basaltic and rhyolitic end-member magma and restite

From: Evolution of the Earth as an andesite planet: water, plate tectonics, and delamination of anti-continent

	This study								Tatsumi et al. (2008)
	Basalt	Rhyolite	Andesite 1	Andesite 2	Andesite 3	Restite	Restite + 10 % olivine	Harzburgite	Basalt	Rhyolite	Restite	Mixed
	Basalt	Rhyolite	(1:1 mixture)	(3:2 mixture)	(7:3 mixture)	Restite	Restite + 10 % olivine	Harzburgite	Basalt	Rhyolite	Restite	Mixed
SiO₂	49.40	75.00	62.20	59.64	57.08	47.76	47.00	45.40	50.00	75.00	47.22	60.00
TiO₂	0.70	0.40	0.55	0.58	0.61	0.72	0.65		0.80	0.30	0.86	0.60
Al₂O₃	18.34	13.52	15.93	16.41	16.89	18.64	16.78		19.10	14.00	19.67	17.06
FeO^a	11.02	2.23	6.63	7.51	8.39	11.58	11.76	5.70	10.20	2.00	11.11	6.92
MgO	6.41	0.68	3.55	4.12	4.69	6.78	10.75	48.90	6.00	0.20	6.64	3.68
CaO	12.42	5.12	8.77	9.50	10.23	12.89	11.60		12.10	3.00	13.11	8.46
Na₂O	1.60	1.78	1.69	1.68	1.66	1.59	1.43		1.60	4.50	1.28	2.76
K₂O	0.10	1.26	0.68	0.56	0.45	0.03	0.02		0.20	1.00	0.11	0.52
Total	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
H₂O	0.50		0.50	0.50	0.50				0.20			0.50

^aFeO, total Fe as FeO
Mixing ratio represents basalt/rhyolite

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