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S. Turner, unpublished data.
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0343472679
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note
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Th in clinopyroxene (13). This is unlikely at island arcs where melting is probably initiated at depths of ∼100 km and reaches 10 to 20%.
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46
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0033490846
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0343908425
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note
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2 becomes more rapid with time (possibly due to the onset of magnetite crystallization) rather than decreasing, as would be expected if crystal-liquid separation was slowed by increasing viscosity.
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49
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0000584573
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2 in the Lesser Antilles and Indonesia, suggesting an important role for mixing in those island arcs. With the exception of Martinique in the Lesser Antilles [J. P. Davidson, J. Geophys. Res. 91, 5943 (1986)], these increases are not strongly correlated with long-lived radiogenic isotope tracers of Sr or Nd, further suggesting that the assimilant is often preexisting, unradiogenic arc crust.
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Davies, J.H.1
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51
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0343036842
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note
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-3.
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56
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0030832662
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S. Turner, C. Hawkesworth, N. Rogers, P. King, Chem. Geol. 139, 145 (1997).
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Turner, S.1
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57
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0343036848
-
-
note
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-4.
-
-
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58
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0343908424
-
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note
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230Th) = 1 containing 10.7 ppm Th.
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60
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0343036845
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note
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Our work on island arc lavas has only been possible through the generosity of the following people whom we thank for either directly or indirectly supplying samples - S. Acland, I. Bahar, S. Bronto, T. Crawford, J. Davidson, M. Defant, S. Eggins, T. Ewart, J. Foden, J. Gamble, J. Gill, B. Kay, P. Kepezhinskas, R. Macdonald, J. Morris, J. Pearce, T. Reay, I. Smith, L. Sutherland, T. Vallier, S. Weaver, C. Williams, J. Woodhead, and T. Worthington, B. Bourdon, T. Elliott, M. Spiegleman, M. Hirschmann, and R. George are all thanked for many helpful discussions. Two anonymous reviewers are thanked for their enthusiastic and helpful comments. S.T. is funded by a Royal Society Research Fellowship and P.E by a NERC grant (GR8/03725) to S.T.
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