Skip to main content

Advertisement

Table 4 Trace element concentrations (ppm) for the deep sea sediments of the southwestern Gulf of Mexico

From: Textural and geochemical characteristics of late Pleistocene to Holocene fine-grained deep-sea sediment cores (GM6 and GM7), recovered from southwestern Gulf of Mexico

Core No. GM6
 Section (cm) 0–1 31–32 46–47 61–62 76–77 91–92 121–122 136–137 151–152 166–167 180–181
  Ba 378 425 339 385 301 360 365 369 435 380 465
  Co 26.2 25.5 22.1 23.7 18.9 23.6 24.8 21.9 19 22.8 21.7
  Cr 73.1 75.6 78.6 81.7 69.1 88.1 85.5 79.6 79.9 81.8 76.9
  Cs 7.4 5.64 7.89 5.78 7.31 7.93 6.54 7.22 4.89 8.32 4.79
  Cu 22.5 22.8 23 22.6 19.9 22.8 21.8 20.1 20.8 21.8 22.9
  Hf 3.31 3.21 3.45 3.45 2.99 3.64 2.98 3.42 3.16 3.21 3.07
  Mo 6.62 1.2 1.4 1.4 0.737 1 1.1 0.755 1.3 0.853 1.4
  Nb 12.5 10.5 13.5 11.8 11.8 13.6 12.6 13 12.5 13.4 12.7
  Ni 23 23.5 21.7 23.8 18 21.4 24.6 21.3 25 17.8 26
  Pb 24.8 15.9 24 17.9 16.2 15 16.4 14.1 17.9 16 14.8
  Rb 100 99.5 102.1 98.7 92.1 107 102.5 94 86.8 107.1 103.5
  Sc 14.1 12.7 15.3 14.6 12.9 15.3 13.8 14 12.9 14.8 10.8
  Sr 322.6 389.2 379.7 356.4 318.9 496.9 310.8 523.7 376.9 357.8 365.5
  Ta 0.449 0.436 0.497 0.48 0.45 0.401 0.86 0.497 1.25 0.447 0.75
  Th 10.1 9.87 10.4 8.65 9.66 10.2 6.78 10 7.45 10.3 8.65
  U 2.25 2.89 2.25 2.47 2.63 4.19 2.78 3.11 2.63 2.73 2.78
  V 116.6 118.4 119.4 112.8 115.1 118.9 135.6 107 117.7 124.7 129.5
  Y 22.2 25.6 24.1 9.85 21.1 25.4 19.6 24.2 18.7 24.2 8.39
  Zn 375.1 77.7 47.9 89.7 20 26 78.6 19 79.7 22 68.5
  Zr 119.2 88.7 133 79.7 109.4 138 96.3 127.7 112.4 126.8 102.5
  V/Cr 1.60 1.57 1.52 1.38 1.67 1.35 1.59 1.34 1.47 1.52 1.68
  Ni/Co 0.88 0.92 0.98 1.00 0.95 0.91 0.99 0.97 1.32 0.78 1.20
  Cu/Zn 0.06 0.29 0.48 0.25 1.00 0.88 0.28 1.06 0.26 0.99 0.33
  Uau −1.10 −0.40 −1.21 −0.41 −0.59 0.80 0.52 −0.23 0.15 −0.69 −0.10
 Section (cm) 196–197 210–211 222–223 226–227 241–242 256–257 300–301 316–317 330–331 Mean ± 1 s (n = 20)
  Ba 359 336 360 378 287 355 276 385 379 366 ± 46
  Co 21.5 24.4 22.5 19.3 23.8 21.3 29 20.9 19.6 22.6 ± 2.59
  Cr 67.6 84.5 77.5 62.8 94.8 70.7 92.7 71.8 84.7 78.8 ± 8.28
  Cs 7.5 6.92 6.95 7.05 6.78 7.12 6.35 8.02 5.84 6.81 ± 1.00
  Cu 21.1 20.9 21.4 18.2 23.7 19.9 19.9 21.6 22 21.5 ± 1.39
  Hf 3.31 3.07 3.13 3.06 3.02 3.27 3.18 3.33 3.45 3.24 ± 0.18
  Mo 4.51 0.727 0.91 0.261 1.3 0.712 1.4 1.52 1.8 1.55 ± 1.46
  Nb 12.6 12.5 12.1 9 13.1 12.9 13.5 13.3 13.8 12.5 ± 1.13
  Ni 21.5 26.3 27.9 13.6 27.9 18.8 28.5 16.2 28.8 22.8 ± 4.3
  Pb 22.8 13.8 13.4 15 22.8 14 24.7 18.8 25.7 18.2 ± 4.26
  Rb 95.4 93.6 95.3 88.4 101.5 96.4 99.9 106 102.7 98.6 ± 5.78
  Sc 13.9 14.3 12.9 12.2 11.9 12.6 12.4 14.1 10.5 13.3 ± 1.35
  Sr 330.2 525.1 463 311.5 366.8 534.5 325.5 359.6 371.9 389 ± 76
  Ta 0.51 0.445 0.353 0.145 0.46 0.46 0.56 0.393 0.54 0.52 ± 0.22
  Th 10.1 9.49 9.21 9.97 9.45 9.92 9.78 10.4 10.5 9.54 ± 0.98
  U 2.05 3.04 3.09 1.95 3.12 2.61 3.14 2.09 3.25 2.75 ± 0.52
  V 118.2 107.6 108.4 94.1 136.5 101.1 139.5 117.6 140.6 119 ± 13
  Y 22.2 23.2 22.7 20.2 10.4 23.7 27.7 23.7 8.65 20.3 ± 6.02
  Zn 51.1 38.9 25 20 43.3 23 60.4 26 126.5 65.9 ± 78.5
  Zr 118.5 117.5 121.3 105.8 99.7 122.1 78.6 126.1 102.4 111 ± 17
  V/Cr 1.75 1.27 1.40 1.50 1.44 1.43 1.50 1.64 1.66 1.51 ± 0.13
  Ni/Co 1.00 1.08 1.24 0.70 1.17 0.88 0.98 0.78 1.47 1.01 ± 0.19
  Cu/Zn 0.41 0.54 0.86 0.91 0.55 0.87 0.33 0.83 0.17 0.57 ± 0.32
  Uau −1.33 −0.12 0.03 −1.37 −0.03 −0.70 −0.12 −1.38 −0.23 −0.42 ± 0.62
Core No. GM7
 Section (cm) 0–1 31–32 46–47 61–62 76–77 91–92 121–122 136–137 151–152 166–167 180–181
  Ba 336 325 421 358 371 375 394 348 423 430 414
  Co 18.8 19.4 21.5 16.6 20.1 17.5 20.8 19.2 21.5 24.3 22.4
  Cr 65 75.4 66.9 78.5 70.3 42.8 69.8 59.8 79.8 69.4 82.6
  Cs 7.21 6.89 7.38 6.45 7.92 6.55 6.67 6.49 6.87 7.61 7.36
  Cu 18.7 19.6 20.1 20.5 20.5 17.8 20 18.3 23.5 21.6 19.7
  Hf 3.17 2.78 3.36 2.65 3.27 3.05 3.1 3.06 3.26 3.16 3.45
  Mo 0.736 0.756 0.746 0.814 0.864 0.752 0.745 0.71 0.478 0.267 0.642
  Nb 11.3 13.5 13.4 10.7 12.9 10.9 12.6 10.6 14.6 13.1 13.8
  Ni 13.6 33.6 18.4 28.6 15.5 19 21.3 15.9 34.2 15.8 31.6
  Pb 17.5 14.9 14.3 17 17.6 13.7 13.2 13.2 16.4 17.6 13.5
  Rb 93.7 95.7 97.7 78.6 104.2 88.1 90.6 87.9 81.7 99.7 79.4
  Sc 12.3 11.7 13.2 12.5 13.6 11.6 13.2 11.2 13.7 13.8 11.5
  Sr 318.6 456.4 523.6 478.3 371.2 500.7 557.9 403.5 298.5 353.6 345.7
  Ta 0.405 1.25 0.509 0.69 0.419 0.374 0.465 0.324 0.56 0.433 0.48
  Th 10.1 11.7 10.6 9.58 10.5 9.86 9.5 9.02 9.68 9.88 9.48
  U 2.04 2.31 3.12 2.18 2.07 2.69 2.73 3.24 2.64 1.95 2.16
  V 103.9 125.4 104.8 140.3 118.1 84.8 99.1 95 98.6 112.7 175.6
  Y 20.6 28.7 23.4 23.5 23 21.1 22.6 20.3 21.5 22.9 20.7
  Zn 23.1 42.4 21 41.6 25 20 20 34.6 19.6 23 18.5
  Zr 105.3 110.6 124.3 14.8 120.3 107.6 118.5 108.9 99.6 121.4 125.6
  V/Cr 1.60 1.66 1.57 1.79 1.68 1.98 1.42 1.59 1.24 1.62 2.13
  Ni/Co 0.72 1.73 0.86 1.72 0.77 1.09 1.02 0.83 1.59 0.65 1.41
  Cu/Zn 0.81 0.46 0.96 0.49 0.82 0.89 1.00 0.53 1.20 0.94 1.06
  Uau −1.31 −1.57 −0.41 −1.01 −1.43 −0.60 −0.43 0.23 −0.59 −1.34 −1.00
 Section (cm) 196–197 210–211 222–223 226–227 241–242 256–257 300–301 316–317 330–331 Mean ± 1 s (n = 20)
  Ba 379 426 327 352 387 349 315 399 325 373 ± 38
  Co 21.7 24.7 16 19.5 27.9 14.9 28.6 27.5 29.5 21.6 ± 4.27
  Cr 77.3 74.7 57.5 69.6 68.6 51.3 71.9 108.6 75 70.7 ± 13.2
  Cs 8.43 5.64 6.45 7.82 4.35 6.59 3.65 7.29 3.12 6.54 ± 1.39
  Cu 22.2 19.8 16.9 21.4 21.6 20.2 22.3 24.3 21.5 20.5 ± 1.85
  Hf 3.43 2.78 2.94 3.27 2.86 3.2 2.76 3.66 3.15 3.12 ± 0.26
  Mo 0.888 0.812 0.679 0.969 0.843 1.24 0.972 0.973 0.856 1.21 ± 1.09
  Nb 14.2 13.8 11.5 12.8 14.6 12.6 13.8 15.4 13.3 13.0 ± 1.37
  Ni 17.1 29.8 24.3 21.6 35.4 20.1 39.8 29.5 32.1 24.8 ± 7.99
  Pb 16.8 14.4 13.3 16.8 16.8 25.9 17.6 15.8 18.7 16.2 ± 2.88
  Rb 107.2 83.6 88.8 100.9 92.5 90.5 98.6 100.6 97.7 93 ± 8.2
  Sc 15.4 12.9 10.1 14.1 13.7 11.3 11.8 19.2 12.6 13 ± 1.9
  Sr 347.4 412.4 561.4 335 432.5 350.6 416.4 459.1 468.4 420 ± 79
  Ta 0.518 1.65 0.381 0.504 0.68 0.512 0.46 0.526 0.47 0.58 ± 0.32
  Th 10.6 10.7 9.56 10.3 8.49 9.88 10.8 10.6 9.34 10 ± 0.72
  U 2.44 2.34 2.75 2.95 2.17 2.67 2.62 3.07 2.49 2.53 ± 0.38
  V 122.3 123.5 87.5 116 118.6 101.6 137.6 153.6 103.5 116 ± 23
  Y 24.8 21.8 21 22.7 21.6 22.9 22.8 26.7 23.9 22.8 ± 2.07
  Zn 53 26.5 42.8 263.8 43.6 38.2 69.8 50.6 57.4 47 ± 53
  Zr 133 134.3 101.2 118.4 89.5 101.8 110.5 152.8 114.3 111 ± 27
  V/Cr 1.58 1.65 1.52 1.67 1.73 1.98 1.91 1.41 1.38 1.66 ± 0.22
  Ni/Co 0.79 1.21 1.52 1.11 1.27 1.35 1.39 1.07 1.09 1.16 ± 0.33
  Cu/Zn 0.42 0.75 0.39 0.08 0.50 0.53 0.32 0.48 0.37 0.65 ± 0.30
  Uau −1.08 −1.21 −0.44 −0.47 −0.66 −0.62 −0.97 −0.45 −0.62 −0.80 ± 0.44
  1. Refer to Table 1, for water depth, latitude and longitude. Authigenic uranium Uau = Total U – Th/3