Statia
St. Kitts
Redonda
Montserrat
Guadeloupe
Dominica
Martinique
St. Lucia
St. Vincent
Petite Mustique
Grenadanorthcentralsouth1280-8(^11) δ
B (‰
) 4
-4
12
8
0
-8
4
-4
12
8
0
-8
4
-4
12
8
0
-8
4
-4
(^11) δ
B (‰
)
(^11) δ
B (‰
)
δ^11
B (‰
)
0.1 110
0 0.1 0.2 0.3 0.4 0.5
Cl/K 2 O
Ba/Sr
0610 20 30 40 50 070
Rb/Sr
B/Be
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
45 50 55 60 65 70 75 80
SiO 2 (wt%)
12
8
0
-8
4
-4
(^11) δ
B (‰
)
(a) (b)
(c) (d)
(e)
Extended Data Fig. 3 | Melt inclusion δ^11 B. a–e, All values of melt inclusion δ^11 B
measured in this study are shown versus indicators of f luid composition (a, b)
and differentiation (c–e). No clear observable trends are shown between
islands, indicating that these differences are largely controlled by the mantle
source.