of 69
In the format provided by the authors and unedited.
1
Supplementary Information to the manuscript “
The roles of peridotite and pyroxenite melting in
the mantle sources of oceanic basalts
,“ by Andrew K. Matzen, Bernard J. Wood, Michael B
. Baker,
and Edward M. Stolper.
Figure S
1
Supplemental Information
Figure S1.
Mn
-Mg olivine
-liquid exchange
coefficients vs. 10
4
/T(K),
(a) and
vs. MgO content of experimental
liquids
(in wt. %), (b). Constant
-composition series experiments from this work show no statically
-
significant
temperature
dependence
(see Supplemental Information Fig. S2)
, but our work, and high
-
precision experiments from the literature, show a slight compositional effect on the exchange coefficient.
Solid black line in (b) is a bisquare
-weighted fit to both the low
-error li
terature data and data from this
work (Equation 1, main text). Note that axes are scaled such that 22 experiments are not shown
The roles of pyroxenite and peridotite in the
mantle sources of oceanic basalts
Andrew K. Matzen, Bernard J. Wood, Michael B. Baker and Edward M. Stolper
©
2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
SUPPLEMENTARY INFORMATION
DOI:
10.1038/NGEO2968
NATURE GEOSCIENCE
|
www.nature.com/naturegeoscience
1
2
Figure S
2
Supplemental Information
Figure S2
Mn
-Mg olivine
-liquid exchange
coefficient vs. 10
4
/T(K) for only the new data p
resented here. Weighted
fits to the constant composition series (where temperature and pressure were changed in concert to
produce liquids with ~12, 15, 18 and 21 wt. % MgO) are shown as dashed lines whose color corresponds
to that of the dataset fit, a w
eighted fit to the dataset as a whole is shown as a solid line. If the assumptions
used to arrive at equation 5 are operative, each constant
-composition series should have a slope and
intercept that is equal to that of the dataset as a whole (see methods).
5.2
5.4
5.6
5.8
6.0
6.2
6.4
6.6
-1.50
-1.45
-1.40
-1.35
-1.30
-1.25
-1.20
-1.15
10
4
/T(K)
lnK
D, Mn-Mg
ol-liq
MgO
liq
~12 wt. %
MgO
liq
~15 wt. %
MgO
liq
~18 wt. %
MgO
liq
~21 wt. %
Haw. picrite
3
Figure S
3
Supplemental Information
Figure S3.
Mn
-Mg olivine
-orthopyroxene
exchange
coefficient vs. 10
4
/T(K), and a bisquare
-weighted fit (solid black
line). Exchange coefficients from the experiments of Walter
25
(squares) and Baker and Stolper
22
(rightward pointing triangles) are also shown, however they were not included in the fit since their major
-
element concentrations and phase fractions are used to construct a forward model of Mn and Ni
partitioning during partial melting and their MnO contents were not determined to high precision. Note
that y
-axis minimum is set such that two experiments are not shown.
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
-1
-0.5
0.0
0.5
10
4
/T(K)
lnK
D, Mn-Mg
ol-opx
Experiments
Low-Error Exp.
Xenoli ths
Baker & Stolper
Walter
4
Figure S
4
Supplemental Information
Figure S4
Mn
-Mg olivine
-garnet exchange coefficient vs. 10
4
/T(K), and a bisquare
-weighted fit
(solid black line)
Exchange coefficients from the experiments of Walter
25
(squares) are also shown, however they were not
included in the fit (for explanation, see caption to Supplemental Information
Fig. S3).
4
5
6
7
8
9
10
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
10
4
/T(K)
lnK
D, Mn-Mg
ol-gt
Experiments
Low-Error Exp.
Xenoli ths
Walter
5
Figure S
5
Supplemental Information F
igure S5
Partitioning of Mn (in wt. %) between olivine and clinopyroxene; lattice strain model shown as a solid
black line (see methods). Coefficients from the experiments of Walter
25
(squares) and Baker and Stolper
22
(rightward pointing triangles) are also shown, however they were not included in the fit (for explanation,
see caption to Supplemental Information
Fig. S3). Note y
-axis is scaled such that 9 experiments with
퐷
푀푀
표표
/
푐푐푐
> 3 are not shown.
.
0
5
10
15
20
25
0
0.5
1.0
1.5
2.0
2.5
3.0
CaO
cpx
(wt. %)
D
ol-cpx
Mn
Experiments
Low-Error Exp.
Xenoli ths
Strain Model
Baker & Stolper
Walter
0.76
0.78
0.8
0.82
0.84
0.86
0.88
0.9
0.2
0.25
0.3
0.35
0.4
Mull Island−1
NiO
oliv
(wt. %)
Olivine
NiO
89
0.76
0.78
0.8
0.82
0.84
0.86
0.88
0.9
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
Mg#
oliv
MnO
oliv
(wt. %)
Olivine
MnO
89
Figure S6
0.8
0.82
0.84
0.86
0.88
0.2
0.25
0.3
0.35
Mull Island−2
NiO
oliv
(wt. %)
Olivine
NiO
89
0.8
0.82
0.84
0.86
0.88
0.16
0.18
0.2
0.22
0.24
0.26
0.28
0.3
Mg#
oliv
MnO
oliv
(wt. %)
Olivine
MnO
89
Figure S7
0.65
0.7
0.75
0.8
0.85
0.9
0.1
0.2
0.3
0.4
0.5
Mull Island−3
NiO
oliv
(wt. %)
Olivine
NiO
89
0.65
0.7
0.75
0.8
0.85
0.9
0.1
0.2
0.3
0.4
0.5
Mg#
oliv
MnO
oliv
(wt. %)
Olivine
MnO
89
Figure S8
0.84
0.86
0.88
0.9
0.92
0.2
0.25
0.3
0.35
0.4
0.45
Ban Bay
NiO
oliv
(wt. %)
Olivine
NiO
89
0.84
0.86
0.88
0.9
0.92
0.1
0.12
0.14
0.16
0.18
0.2
0.22
0.24
Mg#
oliv
MnO
oliv
(wt. %)
Olivine
MnO
89
Figure S9
0.84
0.86
0.88
0.9
0.92
0.25
0.3
0.35
0.4
0.45
0.5
Greenland
NiO
oliv
(wt. %)
Olivine
NiO
89
0.84
0.86
0.88
0.9
0.92
0.1
0.15
0.2
0.25
Mg#
oliv
MnO
oliv
(wt. %)
Olivine
MnO
89
Figure S10
0.86
0.865
0.87
0.875
0.88
0.885
0.89
0.895
0.9
0.25
0.3
0.35
0.4
0.45
Disko
NiO
oliv
(wt. %)
Olivine
NiO
89
0.86
0.865
0.87
0.875
0.88
0.885
0.89
0.895
0.9
0.16
0.17
0.18
0.19
0.2
0.21
0.22
Mg#
oliv
MnO
oliv
(wt. %)
Olivine
MnO
89
Figure S11
0.8
0.82
0.84
0.86
0.88
0.9
0.2
0.25
0.3
0.35
Ontong Java Plateau−1
NiO
oliv
(wt. %)
Olivine
NiO
89
0.8
0.82
0.84
0.86
0.88
0.9
0.2
0.25
0.3
0.35
Mg#
oliv
MnO
oliv
(wt. %)
Olivine
MnO
89
Figure S12
0.84
0.85
0.86
0.87
0.88
0.89
0.9
0.25
0.3
0.35
0.4
0.45
0.5
Ontong Java Plateau−2
NiO
oliv
(wt. %)
Olivine
NiO
89
0.84
0.85
0.86
0.87
0.88
0.89
0.9
0.12
0.14
0.16
0.18
0.2
0.22
Mg#
oliv
MnO
oliv
(wt. %)
Olivine
MnO
89
Figure S13