RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 17, ES1001, doi:10.2205/2017ES000578, 2017
510/5 | 511/3 | 511/13 | 532 | 623 | 624/2 | 624/3 | 624/13a | 625/1 | 644 | 645/2 | |
Sc | 20.2 | 26.6 | 21.5 | 19.7 | 18.6 | 14.5 | 15.1 | 24.6 | 18 | 10.7 | 5.9 |
Cr | 217 | 117 | 160 | 193 | 334 | 243 | 194 | 308 | 259 | 102 | 9.5 |
Co | 45.4 | 47.7 | 45.1 | 44.9 | 51.2 | 56.5 | 60 | 63.9 | 60 | 25.7 | 10.4 |
Cs | $<0.5$ | $<0.5$ | $<0.5$ | 0.20 | 0.20 | $<0.5$ | 0.8 | $<0.5$ | $<0.5$ | 1.2 | $ <0.5$ |
Hf | 4.36 | 4.79 | 3.54 | 5.59 | 4.37 | 6.5 | 4.9 | 4.03 | 5.5 | 6.9 | 5.7 |
Ta | 2.06 | 2.42 | 0.95 | 3.34 | 4.81 | 4.49 | 2.85 | 3.78 | 3.10 | 4.14 | 3.27 |
Th | 2.9 | 3.21 | 1.6 | 4.5 | 4.30 | 4.4 | 4.2 | 3.42 | 4.1 | 7.6 | 6.3 |
U | 1.4 | $<1.0$ | $<1.0$ | 1.8 | 1.40 | 1.5 | 2.1 | 0.91 | 1.5 | 2.8 | 2.3 |
Rb | - | 30 | $<20$ | 39 | 37 | - | - | $<20$ | - | - | - |
Sr | - | 273 | 384 | 938 | 760 | - | - | 549 | - | - | - |
Y | - | 31 | $<15$ | 22 | 620 | - | - | $ <15$ | - | - | - |
Zr | - | 210 | 149 | 355 | 340 | - | - | 204 | - | - | - |
Nb | - | - | 23 | - | - | - | - | - | - | - | - |
Ba | - | 610 | 356 | 700 | 820 | - | - | 447 | - | - | - |
La | 28.40 | 26.73 | 15.30 | 40.00 | 45.20 | 33.60 | 40.90 | 27.01 | 38.70 | 52.40 | 40.90 |
Ce | 53.60 | 58.70 | 32.10 | 78.60 | 79.90 | 61.90 | 79.70 | 52.80 | 64.40 | 89.60 | 70.40 |
Nd | 22.00 | 65.00 | 28.00 | 18.00 | 25.00 | 57.00 | 71.00 | 61.00 | 33.00 | 48.00 | 35.00 |
Sm | 5.88 | 7.81 | 4.52 | 7.51 | 7.37 | 7.01 | 8.14 | 5.92 | 7.91 | 8.03 | 5.77 |
Eu | 1.76 | 2.47 | 2.54 | 2.16 | 2.34 | 2.25 | 2.47 | 1.96 | 2.36 | 2.36 | 2.09 |
Tb | 0.79 | 1.24 | 0.92 | 0.46 | 1.08 | 1.08 | 1.04 | 0.78 | 1.13 | 1.13 | 0.91 |
Yb | 1.71 | 3.13 | 1.33 | 1.32 | 1.48 | 1.18 | 1.44 | 1.90 | 1.18 | 2.52 | 2.48 |
Lu | 0.24 | 0.94 | 0.11 | 0.42 | 0.15 | 0.13 | 0.14 | 0.43 | 0.20 | 0.32 | 0.29 |
Note: Sampling sites: samples 510–511 (L. Burichi), 532 (southwestern termination of the China-Vakatskii Fault), 623 (upper reaches of the Chukchudu R.), 624 and 625 (upper reaches of the Kuas R.), 644, 645/2 (area of Chepe volcano). |
Citation: Grachev A. F. (2017), The nature of Late Cenozoic volcanism in the Udokan Range, northwestern segment of the Baikal Rift Zone, Russ. J. Earth Sci., 17, ES1001, doi:10.2205/2017ES000578.
Copyright 2017 by the Geophysical Center RAS.