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NUMBER 19 47 PACIFIC OCEAN GALAPAGOS SPREADING CENTER LAT. LONG. UEP1H AGE 5 T E 5102 AL203 FEO* MGO CAO NA20 K20 TI02 P205 SUM VG-# SO 00.71N 085.50W 2523 < 1 R D E 50.09 11.86 16.95 4.76 9.65 2.42 .17 3.33 .29 99.52 A24 VG 00.71N 085.50W 2523 < 1 R D E 50.11 11.63 16.96 4.54 9.54 2.44 .15 3.29 .27 98.93 A 1 VG 00.71N 085.50W 2523 < 1 R D E 49.30 12.02 16.96 4.98 9.56 2.34 .17 3.23 ,26 98.82 A25 VG 00.71N 085.50W 2523 < 1 R D E 49.84 11.95 16.96 4.80 9.70 2.39 .15 3.22 .25 99.26 A34 VG 00.71N 085.50W 2523 < 1 R D E 50.45 12.37 16.98 5.14 9.95 2.56 .14 3.51 .28 101.38 A59 VG 00.71N 085.50W 2523 < 1 R D E 50.05 12.28 16.99 4.73 9.81 2.55 .16 3.19 .28 100.04 967 VG 00.71N 085.50W 2523 < 1 R D E 50.18 11.76 16.99 4.75 9.47 2.46 .17 3.27 .26 99.31 A48 VG 00.7iN 085.50k 2523 < 1 R D E 49.32 11.74 17.01 4.92 9.65 2.48 .16 3.27 .25 98.80 Al5 VG 00.71N 085.50W 2523 < 1 R D E 49.86 11.74 17.01 4.85 9.65 2.47 .17 3.36 .27 99.38 A29 VG 00.71N 085.50W 2523 < 1 R D E 50,55 11.48 17.02 4.80 9.57 2.30 .18 3.11 ,27 99,28 597 VG 00.71N 085,50W 2523 < 1 R D E 50.68 11.89 17.02 4.67 9.63 2.67 .13 3.32 .27 100.28 A38 VG 00.71N 085.50W 2523 < 1 R D E 50.62 11.66 17.04 4.86 9.63 2,51 .16 3.18 .30 99.96 A 4 VG 00.71N 085.50W 2523 < 1 R D E 49.68 11.72 17.04 4.69 9.58 2.48 .16 3.33 .26 98,94 A32 VG 00.71N 085.50W 2523 < 1 R D E 50.06 11.92 17.05 4.71 9.56 2.44 .14 3.24 ,25 99,37 A41 VG 00.71N 085.50W 2523 < 1 R D E 49.74 11,71 17.06 4.78 9.61 2.50 .17 3.27 .25 99.09 A14 VG 00.71N 085.50W 2523 < 1 R D E 49.90 11.80 17.07 4.92 9.58 2.47 .14 3.23 .30 99.41 A35 VG 00.71N 085.50w 2523 < 1 R D E 50.22 11.86 17.08 5.00 9.72 2.42 .17 3.31 .25 100,03 A17 VG 00.71N 085.50W 2523 < 1 R D E 50.06 11.98 17.10 4.78 9.70 2.45 .16 3.32 .28 99.83 A18 VG 00.71N 085.50W 2523 < 1 R D E 49.49 11,91 17.10 4.71 9.53 2.47 .18 3.35 .27 99.01 A30 VG 00.71N 085.50W 2523 < 1 R D E 50,53 11.88 17.11 4.72 9.84 2.42 .14 3.29 ,27 100,20 A37 VG 00.71N 085,50W 2523 < 1 R D E 50,57 12.18 17.11 4.84 9.68 2,51 ,16 3,38 ,34 100,77 A57 VG 00.71N 085.50W 2523 < 1 R D E 50.10 11.83 17.12 4.92 9.80 2.49 .16 3.27 .28 99,97 A 7 VG 00.71N 085.50W 2523 < 1 R D E 50.38 12.21 17.14 4.88 9.76 2.52 .13 3.21 .29 100.52 AOO VG 00.71N 085.50W 2523 < 1 R D E 50,46 11.51 17.16 4.64 9.70 2.34 .17 3.31 .30 99,59 A 5 VG 00.71N 085.50W 2523 < 1 R D E 49.79 11.72 17.16 4.76 9.69 2.49 ,17 3.19 ,28 99.25 A 8 VG 00.71N 085.50W 2523 < 1 R D E 49.75 12,01 17,16 4,81 9.73 2,44 ,15 3.28 .27 99.60 A16 VG 00.71N 085.50W 2523 < 1 R D E 50.04 11.62 17.17 5.01 9.73 2.45 .14 3.24 .27 99.67 A10 VG 00.71N 085.50W 2523 < 1 R D E 49.34 12.18 17.17 4.32 9.44 2.58 .14 3.42 .27 98.86 A40 VG 00.71N 085,50W 2523 < 1 R D E 49.42 11.85 17.18 4.49 9,30 2,58 .18 3.36 ,29 98,65 A20 VG 00.71N 085,50W 2523 < 1 R D E 50.37 12.20 17.21 3.57 8.75 2.75 .22 3.65 .35 99.07 A23 VG 00.71N 085.50W 2523 < 1 R 0 E 49.98 12.25 17.21 3.85 9.18 2.72 .18 3.45 .32 99.14 C58 VG 00.71N 085.50W 2523 < 1 R D E 49.56 11.77 17.21 5.01 9.73 2.45 .16 3.21 .26 99,36 C60 VG 00.71N 085,50W 2523 < 1 R D E 50,05 11.81 17.24 5.03 9.72 2.49 .18 3.31 .30 100.13 A02 VG 00.71N 085.50W 2523 < 1 R D E 49.95 11.92 17.28 4.81 9.31 2.53 .18 3.20 .25 99,43 C57 VG 00.71N 085,50W 2523 < 1 R D E 50,18 11,91 17.32 4.06 9.03 2.77 .18 3.36 .30 99,11 C47 VG 00.71N 085.50W 2523 < 1 R 0 E 49.83 11.73 17,36 3.99 8.94 2,73 .20 3,56 ,33 98.67 A22 VG
48 SMITHSONIAN CONTRIBUTIONS TO THE EARTH SCIENCES PACIFIC OCEAN GALAPAGOS SPREADING CENTER LAT. LONG. DEPTH AGE S T E SI02 AL2O3 FEO* MGO CAO NA2O K20 TI02 P2O5 SUM VG-# SO 0O.71N 085.5OW 2523 < 1 R D E 49.95 11.63 17.36 4.31 9.54 2.46 .17 3,39 .27 99.08 A27 VG 00.71N 085.50W 2523 < 1 R D E 49.99 11.92 17.40 4.25 9.06 2.75 .17 3.48 .30 99.32 C49 VG 00.71N 085.50W 2523 < 1 R D E 48.63 11.75 17.50 4.96 9.51 2.48 .18 3.65 .33 98.99 A56 VG 00.71N 085.5OW 2523 < 1 R D E 49.72 11.76 17.53 4,34 9.22 2.67 .19 3.53 .32 99.28 C50 VG 00.71N 085.50w 2523 < 1 R D E 50.48 11.44 17.56 3.94 9.32 2.56 .18 3.52 .33 99.33 A46 VG 00.71N 085.50W 2523 < 1 R D E 50.36 11.58 17.63 4.09 9.22 2.61 ,18 3,56 .31 99.54 A49 VG 00.71N 085.50W 2523 < 1 R D E 50.04 11.60 17.89 3.95 9.27 2.60 .19 3.69 .35 99.58 A 6 VG 00.71N 085.50W 2523 < 1 R D E 49.65 11.62 17.90 3.81 8.86 2.59 .21 3.59 .33 98.56 A42 VG 00.71N 085.50w 2523 < 1 R D E 49.68 11.42 18.09 4.33 9,14 2,60 ,15 3,94 ,33 99.68 A60 VG 00.71N 085.50W 2523 < 1 R D E 4g,46 11.30 18.19 4.31 9.08 2.64 .20 3.69 .31 99.18 A21 VG 00.71N 085.50W 2523 < 1 R D E 48.75 11.54 18.36 4.30 9.07 2.56 .21 3.69 .34 98.82 A 3 VG 00.71N 085.50W 2523 < 1 R D E 50.29 11.50 18.36 4.36 9.28 2.46 ,17 3.64 ,29 100,35 C59 VG 00.71N 085.50W 2523 < 1 R D E 49.43 11.26 18.43 4.34 9.19 2.50 .18 3.66 .30 99.29 A28 VG 00.71N 085.50W 2523 < 1 R D E 49.16 11.13 18.46 4.24 9.21 2.48 .18 3.76 .30 98.92 A47 VG 00.71N 085.50w 2523 < 1 R D E 49.17 11.14 18.50 4.24 9.10 2.52 .19 3.69 .32 98,87 All VG 00.71N 085,50W 2523 < 1 R D E 49.87 11,12 18.54 4.29 9.29 2.50 .19 3.73 ,30 99,83 A 9 VG 00.71N 085.50W 2523 < 1 R D E 49.15 11.27 18.66 4.21 9.33 2.48 .19 3.76 .31 99.36 A12 VG 00.82N 086.13W 2500 < 1 R D E 51.35 13.21 13.43 6.12 10.74 2.30 .10 2.14 .18 99.57 C62 CL 00.82N 086.13W 2500 < 1 R D E 51.58 13.14 13.84 5.20 10.10 2.64 .12 2.14 .21 98.97 C6l CL 00.82N 086.13W 2500 < 1 R D E 51.14 12.90 14.10 5.50 10.11 2.60 .13 2.17 .23 98.88 C63 CL 01.04N 085.12W 27g8 < 1 R D E 50.29 16.21 8.52 7.94 11.71 2.79 .08 1.55 .19 99.28 D49 VG 01.04N 085.12W 2798 < 1 R D E 50.74 16.39 8.56 8.04 11.88 2.74 .06 1.45 .13 99.99 594 VG 01.04N 085.12W 2798 < 1 R D E 49.34 16.30 8.56 8.07 11.90 2.75 .07 1.52 .12 98.63 D48 VG 01.04N 085.12W 2798 < 1 R D E 49.97 16.41 8.58 7.86 11.94 2.77 .07 1.51 .15 99.26 592 VG 01.04N 085.12W 27g8 < 1 R D E 50.31 16.21 8.60 8.38 11.97 2.82 .07 1.44 .13 99.93 595 VG 01.04N 085.12W 2798 < 1 R D E 50.23 16.27 8.60 7.92 11.98 2.81 .10 1.45 .16 99.52 D50 VG 01.04N 085,12W 2798 < 1 R D E 50.25 16,54 8.70 8.02 11.89 2.71 .07 1.41 .13 99.72 593 VG 01.04N 085.12W 2798 < 1 R D E 49,89 16.26 8.72 8.19 11.98 2.74 ,07 1.45 .12 99.42 591 VG 02.20N 101.42W - < 1 R D E 51.05 14.91 9.64 6.83 11.50 3.03 .13 1.49 .11 98.69 C66 CL 02.42N 095.41W 2268 < 1 R D E 50.66 15.54 9.20 7.97 12,31 2,23 ,07 1,22 .07 99.27 D38 VG 02.42N 095.41W 2268 < 1 R D E 51.38 15.49 9.22 7.81 12.19 2.19 .08 1.13 .06 99.55 605 VG 02.42N 095.41W 22& 8 < 1 R D E 50.35 15.62 9.23 8.4O 12.42 2.20 .14 1.20 .08 99.64 D41 VG 02.42N 095.41w 2268 < 1 R D E 50.21 15.47 9.28 8.04 12.41 2.21 .11 1.17 .05 98.95 D40 VG 02.42N 095.41W 2268 < 1 R D E 50.70 15.44 9.29 8.11 12.20 2.23 ,12 1.15 .06 99.30 D60 VG 02.42N 095.41i* 2268 < 1 R D E 50.36 15.62 9.34 8.24 12.30 2.25 .09 1.18 .08 99.46 D59 VG 02.42N 095.41W 2268 < 1 R D E 50.37 15.52 9.39 7.66 12.28 2.27 .13 1.11 .11 98.84 D43 VG
Page 1 and 2: SMITHSONIAN CONTRIBUTIONS TO THE EA
Page 3 and 4: Contents MINERALOGY COMPOSITION OF
Page 5 and 6: Constituent SiO TiO Al 0 fl 2 3 Cr
Page 7 and 8: PER CENT CBLCIUM FIGURE 3.—The ca
Page 9 and 10: Constituent TiO,, 2 2 3 FeO* MnO Mg
Page 11 and 12: 20 Cfl 40 .60 SMITHSONIAN CONTRIBUT
Page 13 and 14: 35'50' I L 6.. 3.. 2.. r FOKT DEFIA
Page 15 and 16: 12 SMITHSONIAN CONTRIBUTIONS TO THE
Page 17 and 18: 14 20 SMITHSONIAN CONTRIBUTIONS TO
Page 19 and 20: 16 Constituent Si0 2 TiO2 A12O3 Cr
Page 21 and 22: 18 20 40 £0 SMITHSONIAN CONTRIBUTI
Page 23 and 24: 20 40 20 SMITHSONIAN CONTRIBUTIONS
Page 25 and 26: Abyssal Basaltic Glasses as Indicat
Page 27 and 28: 24 Electron-M icroprobe Analysis An
Page 33 and 34: 30 Hill in the NE Atlantic, and fro
Page 35 and 36: 32 cores the arrangement is stratig
Page 39 and 40: 36 ATLANTIC OCEAN LAT. LONG. DEPTH
Page 49: 46 SMITHSONIAN CONTRIBUTIONS TO THE
Page 75 and 76: TABLE 1.—Chemical composition in
Page 85 and 86: 82 Literature Cited Bostrom, K., an
Page 87 and 88: Geochemical Differences among Compo
Page 99 and 100: The St. Mary's County, Maryland, Ch
Page 101 and 102:
98 SMITHSONIAN CONTRIBUTIONS TO THE
Page 103 and 104:
100 SMITHSONIAN CONTRIBUTIONS TO TH
Page 105 and 106:
Page 107 and 108:
Mineralogical and Chemical Composit
Page 109 and 110:
Page 111 and 112:
108 Sampling Inclusion 1 was taken
Page 113 and 114:
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112 15 10 32 3.6 40 44 48 •fl-r O
Page 117 and 118:
Page 119 and 120:
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Page 123 and 124:
2.0- 1.5- 1.0 0.8 : 0.6: 0.4- 0.2-
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