TABLE 2.

Bulk Oxide Compositions (wt. %) of Marine Sediments

Oxide	GLOSS*	Antilles**	Marianas***	Vanuatu****
SiO2	58.57	46.57	56.53	44.76
TiO2	0.62	0.70	0.233	0.365
Al2O3	11.91	17.99	2.30	11.16
FeO	5.21	7.38	1.56	3.13
MnO	0.32	0.17	0.03	0.11
MgO	2.48	1.61	0.81	1.59
CaO	5.95	5.45	19.23	18.58
Na2O	2.43	1.91	0.47	3.58
K2O	2.04	2.83	0.60	0.95
P2O5	0.19	0.08	0.084	0.126
CO2	3.01	3.83	15.00	12.32
H2O	7.29	11.97	3.16	3.13

All bulk compositions are from Table 1 of Plank and Langmuir⁸.

* Average marine sediment bulk composition ("GLOSS") in Table 3 of Plank and Langmuir⁸.

** Designated "Ant Fe-cc clay" in Table 1 of Plank and Langmuir⁸.

*** Designated "Marianas Chert-Lst" in Table 1 of Plank and Langmuir⁸.

**** Designated "Van Nanno" in Table 1 of Plank and Langmuir⁸