East Scotia Ridge unsecured

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Unformatted text preview: 15·0 2·27 11·3 3·49 1·29 4·40 0·775 5·04 1·06 3·19 0·437 2·90 0·420 2·92 0·304 0·019 0·670 0·319 0·120 1445 E9 40·4 255 35·7 61·8 64·6 57·5 15·4 4·40 184 25·9 105·0 5·15 0·068 49·4 5·43 14·8 2·34 11·6 3·62 1·29 4·48 0·776 5·11 1·07 3·16 0·432 2·79 0·410 2·92 0·324 0·019 0·673 0·316 0·124 JOURNAL OF PETROLOGY VOLUME 43 NUMBER 8 AUGUST 2002 Table 1: continued Segment: Sample: Lat. (S): Long. (W): Depth (m): E9 wx68 60°12·00′ 29°52·19′ 2817 E9 wx69 60°20·01′ 29°42·58′ 3259 Major elements (wt %) 19/9 nME/nH2O 20/5 51·29 51·33 SiO2 1·71 1·58 TiO2 14·71 15·67 Al2O3 FeO 9·61 8·69 MnO 0·21 0·18 MgO 6·66 7·22 CaO 11·26 11·02 3·64 3·50 Na2O 0·33 0·37 K2O 0·34 0·33 P2O5 0·31 0·34 H2O Total 100·06 100·24 mg-no. 59·22 63·54 Trace elements (ppm) Sc 38·9 32·9 Cr 151 200 Co 37·6 34·0 Ni 57·0 72·0 Cu 66·2 59·0 Zn 82·0 76·0 Ga 17·0 16·5 Rb 4·96 6·22 Sr 177 189 Y 29·7 27·6 Zr 123 128 Nb 5·38 6·04 Cs 0·076 0·100 Ba 53·4 65·4 La 5·67 6·23 Ce 14·9 15·7 Pr 2·43 2·49 Nd 12·1 12·0 Sm 3·85 3·73 Eu 1·39 1·32 Gd 4·73 4·54 Tb 0·858 0·805 Dy 5·51 5·20 Ho 1·17 1·09 Er 3·29 3·06 Tm 0·481 0·444 Yb 3·13 2·90 Lu 0·456 0·428 Hf 3·12 3·10 Ta 0·329 0·355 Tl 0·024 0·021 Pb 0·733 0·786 Th 0·381 0·448 U 0·132 0·152 Standards S.D. JDF-D2 n = 17 50·62 1·91 13·70 12·02 0·23 6·61 10·79 2·79 0·21 0·33 n = 28 0·74 0·05 0·19 0·41 0·03 0·10 0·13 0·03 0·02 0·03 99·21 BHVO-1 (n = 3) 30·5 2·77 277 11·16 42·8 0·91 114 2·5 133 5·07 107 7·06 21·3 0·40 9·39 1·79 402 7·91 24·4 0·98 179 15·61 16·8 0·57 0·108 0·01 133 1·75 14·9 0·29 35·6 1·22 5·27 0·11 23·8 0·25 6·03 0·06 2·02 0·004 6·00 0·06 0·937 0·01 5·22 0·14 0·982 0·02 2·45 0·03 0·323 0·003 1·97 0·03 0·276 0·004 4·64 0·17 1·02 0·04 0·045 0·01 1·99 0·03 1·16 0·04 0·416 0·01 Standards S.D. CFA47-2 61·47 0·43 18·57 2·72 0·18 0·41 1·83 5·33 7·92 0·11 0·47 0·04 0·20 0·08 0·04 0·02 0·15 0·05 0·09 0·03 98·97 BIR (n = 3) 43·0 1·69 365 10·99 50·2 0·21 165 2·93 113 2·54 72·2 8·63 15·1 0·04 0·31 0·01 110 2·58 14·4 0·62 15·2 1·20 0·535 0·01 0·007 0·000 6·53 0·20 0·633 0·01 1·84 0·03 0·376 0·004 2·31 0·05 1·13 0·04 0·505 0·001 1·76 0·02 0·357 0·01 2·53 0·04 0·56 0·005 1·63 0·01 0·247 0·002 1·63 0·01 0·246 0·002 0·595 0·04 0·039 0·001 0·009 0·01 2·99 0·04 0·031 0·000 0·011 0·01 wx, samples recovered by wax coring on cruise JR39b; DS, samples dredged on cruise PS47; nME, number of major element analyses; nH2O, number of FTIR analyses; n.d., not detected. 1446 FRETZDORFF et al. PETROGENESIS OF EAST SCOTIA RIDGE Table 2: Sr–Nd–Pb isotope ratios of the East Scotia Ridge volcanic glasses analysed by TIMS Sr/86Sr ± 143 ± 207 96DS-1 0·702583 5 0·513104 6 wx45 0·702636 7 0·513098 8 18·047 4 18·007 2 E3 97DS-1 0·702666 7 0·513101 11 18·039 E3 wx46 0·703035 8 0·513042 9 18·163 E3 98DS-1 0·703122 E4 wx47 0·703288 7 0·513023 13 18·206 3 15·523 2 37·973 5 8 0·513004 7 18·255 1 15·530 1 38·051 2 E4 99DS-1 E4 99DS-4 0·703481 6 0·512915 6 18·463 2 15·587 2 38·405 5 0·703497 5 0·512923 7 18·453 2 15·570 1 38·359 E4 4 100DS-1 0·702768 7 0·513067 8 18·093 2 15·507 2 37·743 5 E5 wx48 0·702511 9 0·513121 5 18·025 4 15·496 3 37·571 8 E5 104DS-1 0·702554 8 0·513105 7 18·072 1 15·483 1 37·607 3 E5 wx49 0...
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This document was uploaded on 02/01/2014.

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