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NUMBER 19 59 PACIFIC OCEAN JUAN DE FUCA RIDGE SYSTEM LAT. LONG. DEPTH AGE S T E SIO2 AL2O3 FEO# MGO CAO NA20 K20 TIO2 P2O5 SUM VG-* SO 44.66N 130.33W 2220 < 1 R D E 50.57 13.96 12.23 6.92 11.39 2.38 .15 1.95 .13 99.68 040 US 44.66N 130.33w 2220 < 1 R D E 50.64 14.02 12.24 6.72 11.21 2.47 .15 1.88 .15 99.48 104 US 44.66N 130.33W 2220 < 1 R D E 50.45 14.41 12.24 6.63 11.50 2.64 .19 1.78 .17 100.01 111 US 44.66N 130.33W 2220 < 1 R D E 50.82 14.07 12.26 6.79 11.58 2.60 .13 1.83 .14 100.22 101 US 44.66N 130.33W 2220 < 1 R D E 49.93 13.84 12.27 6.9l 11.13 2.58 .14 1.82 .14 98.76 023 US 44.66N 130.33W 2220 < 1 R D E 50.43 13.85 12.27 6.81 11.31 2.53 .14 1.86 .14 99.34 038 US 44.66N 130.33W 2220 < 1 R D E 50.46 13.84 12.27 6.79 11.41 2.54 ,16 1.93 .16 99.56 088 US 44.66N 130.33W 2220 < 1 R D E 50.39 13.89 12.27 6.46 11.38 2.54 .15 1.97 .15 99.20 100 US 44.66N 130.33W 2220 < 1 R D E 51.18 14.17 12.27 6.58 10.92 2,66 .19 1.78 .16 99.91 135 US 44.66N 130.33W 2220 < 1 R D E 50.82 14.26 12.28 6.42 11.10 2.63 .20 1.83 .17 99.71 091 US 44.66N 130.33W 2220 < 1 R D E 50.93 14.01 12.28 6.73 11.38 2.52 .15 2.00 .15 100.15 124 US 44.66N 130.33W 2220 < 1 R D E 50.36 13.90 12.29 6.76 11.38 2.48 .14 1.87 ,15 99.33 094 US 44.66N 130.33W 2220 < 1 R D E 50.73 13.79 12.29 6.49 11.41 2.49 .15 1.96 .14 99.45 164 US 44.66N 130.33W 2220 < 1 R D E 50.08 13.90 12,31 5,89 10.61 2.79 .27 1.95 .25 98.05 119 US 44.66N 130.33W 2220 < 1 R D E 50.52 13.55 12.33 6.79 11.44 2.57 ,13 1.88 .11 99.32 152 US 44.66N 130,33W 2220 < 1 R D E 50.92 14.00 12.34 6.93 11.52 2,58 ,14 1,84 ,14 100,41 030 US 44.66N 130.33W 2220 < 1 R D E 50.69 14.16 12,34 6.58 11.05 2.60 .18 1.88 .16 99.64 165 US 44.66N 130.33W 2220 < 1 R D E 50.17 14.03 12.35 6.94 11.22 2.46 .15 1.84 .18 99.34 022 US 44.66N 130.33W 2220 < 1 R D E 50.77 14.16 12.36 6.90 11.38 2.58 .15 1.92 .19 100.41 027 US 44.66N 130.33W 2220 < 1 R D E 50.87 14.06 12.36 6.79 11.53 2.56 .14 1.93 .16 100.40 039 US 44.66N 130.33W 2220 < 1 R D E 51.31 13.99 12.36 6.82 11.71 2.57 .17 1.95 .14 101.02 087 US 44.66N 130,33W 2220 < 1 R D E 50.88 13.85 12.37 6.11 10,59 2,85 .27 2.04 .20 99.16 61 US 44.66N 130,33W 2220 < 1 R D E 50,51 13,89 12.39 6.84 11.17 2.50 ,14 2.00 ,12 99,56 090 US 44.66N 130.33W 2220 < 1 R D E 50.59 13.93 12,42 6,93 11,45 2,41 .14 1.89 .13 99.89 036 US 44.66N 130.33W 2220 < 1 R D E 50.65 14.02 12.42 6«82 11.56 2.57 .13 1.92 .15 100.24 045 US 44.66N 130,33W 2220 < 1 R D E 50.72 13.66 12.42 6.13 10.46 2.69 .26 2.00 ,21 98.55 128 US 44.66N 130.33W 2220 < 1 R D E 50.95 14.44 12.44 6.19 11,66 2.52 .14 2,01 ,18 100,53 106 US 44.66N 130,33w 2220 < 1 R D E 50,59 13,77 12,50 6,11 10,56 2,73 ,27 2,01 ,20 98.74 151 US 44.66N 130,33W 2220 < 1 R D E 50,70 14.07 12.50 6.45 11,32 2.50 .16 1,96 .16 99,82 157 US 44.66N 130,33W 2220 < 1 R D E 51.07 13.65 12.52 6.03 10.24 2.82 .27 1,96 ,27 98.83 054 US 44.66N 130.33W 2220 < 1 R D E 51.18 14.14 12.52 6.83 11.20 2.66 .19 1,87 ,18 100,77 075 US 44.66N 130,33w 2220 < 1 R D E 51.13 13.57 12,53 6,11 10,44 2.82 .25 1.98 .24 99.07 64 US 44.66N 130.33w 2220 < 1 R D E 51.02 14.03 12.54 6.85 11.54 2.49 .14 1.90 ,16 100,67 034 US 44.66N 130.33W 2220 < 1 R D E 50.86 13.70 12.55 6.17 10.46 2.77 ,25 1.98 .22 98.96 63 US 44.66N 130,33W 2220 < 1 R D E 50.38 13.86 12.59 6*65 11.37 2.39 .14 2.02 .16 99.56 015 US 44.66N 130,33W 2220 < 1 R D E 51,13 13.80 12.61 6.17 10.49 2.71 .27 1.98 .26 99.42 59 US
50 SMITHSONIAN CONTRIBUTIONS TO THE EARTH SCIENCES PACIFIC OCEAN JUAN DE FUCA RIDGE SYSTEM LAT. LONG. DEPTH AGE S T E SI02 AL2O3 FED* MGO CAO NA2O K20 TI02 P205 SUM VG-* SO 44.66N 130.33W 2220 < 1 R D E 51.08 13.86 12.65 6.02 10.43 2.94 .28 2.04 .22 99.52 162 US 44.66N 130.33W 2220 < 1 R 0 E 51.17 13.74 12.66 5.87 10.42 2.80 .26 2.01 .21 99.14 145 US 44.66N 130.33W 2220 < 1 R D E 51.03 14.02 12.80 6.90 11.64 2.48 .15 1.95 .16 101.13 035 US 44.66N 130.33W 2220 < 1 R D E 51.40 13.76 13.07 6.25 10.22 2.89 .26 1.94 .25 100.04 012 US 44.66N 130.33W 2220 < 1 R D E 51.74 14.30 13.42 5.37 10.35 2.32 .62 2.26 .19 100.57 046 US 44.75N 130.42W 2600 < 10 R D E 50.93 13.36 14.21 5.88 10.81 2.63 .17 2.46 .16 100.61 175 US 44.75N 130.50W 2995 < 10 R Q E 50.65 14.11 12.52 6.56 11.63 2.48 .12 1.83 .12 100.02 176 US 46.09N 129.92W 2199 < 10 R D E 49.90 14.18 12.16 6.35 11.89 2.98 .21 1.86 .13 99.66 773 TH 46.12N 130.OOW 2744 < 10 R D E 48.90 14.33 13.17 5.71 10.95 3.29 .28 2.28 .24 99.15 771 TH 46.12N 130.OOW 2744 < 10 R D E 48.96 13.73 13.18 5.96 10.93 3.25 .23 2.26 .20 98.70 772 TH 46.12N 130.OOW 2744 < 10 R D E 49.97 13.79 13.24 5.79 10.85 3.30 .26 2.28 .21 99.69 770 TH 46.27N 129.60w 2649 < ,10 R D E 50.22 14.44 10.93 7.17 12.17 2.53 .05 1.34 .08 98.93 774 TH 46.27N 129.60W 2649 < 10 R D E 49.86 14.05 12.44 6.40 11.75 3.02 .20 1.84 .14 99.70 775 TH 46.39N 129.97W 2522 < 10 R D E 48.23 17.24 9.98 8.51 11.76 2.55 .05 1.06 .04 99.42 768 TH 46.39N 129.97W 2522 < 10 R D E 48.27 17.52 10.01 8.93 11.87 2.56 .02 1.19 .05 100.42 769 TH
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SMITHSONIAN CONTRIBUTIONS TO THE EA
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Contents MINERALOGY COMPOSITION OF
Page 5 and 6:
Constituent SiO TiO Al 0 fl 2 3 Cr
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PER CENT CBLCIUM FIGURE 3.—The ca
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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 61: 58 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 103 and 104: 100 SMITHSONIAN CONTRIBUTIONS TO TH
Page 107 and 108: Mineralogical and Chemical Composit
Page 111 and 112: 108 Sampling Inclusion 1 was taken
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110 SMITHSONIAN CONTRIBUTIONS TO TH
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112 15 10 32 3.6 40 44 48 •fl-r O
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2.0- 1.5- 1.0 0.8 : 0.6: 0.4- 0.2-
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