Earth, Planets and Space

Table 1 Element mass changes in BPS

From: Fluid-metapelite interaction in an ultramafic mélange: implications for mass transfer along the slab-mantle interface in subduction zones

	Outcrop
	1		2
	Sample NK14		Sample NK24
	(g/100 g of protolith)	(% change)	(g/100 g of protolith)	(% change)
SiO₂	−11 ± 2	−15	−16 ± 2	−23
Fe₂O₃^a	+0.4 ± 0.5	+14.9	−1.9 ± 0.4	−40.0
MnO	−0.00 ± 0.02	−11.87	−0.06 ± 0.01	−62.60
MgO	+0.4 ± 0.2	+32.9	+1.4 ± 0.5	+56.6
CaO	+0.27 ± 0.08	+51.44	+0.01 ± 0.07	+2.25
Na₂O	+0.1 ± 0.4	+34.4	+4.5 ± 0.4	+203.7
K₂O	−0.6 ± 0.3	−23.2	−3.1 ± 0.2	−93.4
H₂O	−0.16 ± 0.31	18.75	−0.7 ± 0.5	−25.1
C	−0.16 ± 0.07	−94.78	−0.44 ± 0.03	−95.70
	(μg/g of protolith)	(% change)	(μg/g of protolith)	(% change)
V	+11 ± 13	+15	−19 ± 6	−19
Cr	+28 ± 6	+48	−15 ± 28	−18
Ni	+21 ± 6	+109	+30 ± 28	+96
Cu	+29 ± 8	+161	+12 ± 7	+59
Zn	+2 ± 12	+5	−47 ± 10	−61
Rb	−45 ± 14	−47	−98 ± 9	−95
Sr	+32 ± 11	+46	−2 ± 12	−4
Ba	−92 ± 52	−21	−453 ± 36	−91
Pb	−7 ± 3	−7	−9 ± 3	−55

^aTotal iron as Fe₂O₃.

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