Chemistry Reference
In-Depth Information
2
1
10000.0
10000.0
1000.0
1000.0
100.0
100.0
10.0
10.0
1.0
1.0
C1
C1
0.1
0.1
Gabbro (L1097-1)
Gabbro (L1153-49)
0.0
0.0
La
Pr
Pr
Gd
Dy
Er
Yb
La
Pr
Pr
Gd
Dy
Er
Yb
Ce
Nd
Eu
Tb
Ho
Tm
Lu
Ce
Nd
Eu
Tb
Ho
Tm
Lu
4
3
10000.0
Beriozovsky massif
10000.0
Beriozovsky massif
1000.0
1000.0
100.0
100.0
10.0
10.0
1.0
1.0
0.1
0.1
Pyroxenite (sample 1597)
0.0
Gabbro-pyroxenite (sample 1606-1)
0.0
La
Pr
Pr
Gd
Dy
Er
Yb
La
Pr
Pr
Gd
Dy
Er
Yb
Ce
Nd
Eu
Tb
Ho
Tm
Lu
Ce
Nd
Eu
Tb
Ho
Tm
Lu
5
10000.0
Beriozovsky massif
1000.0
100.0
10.0
1.0
0.1
Gabbro-diorite (sample 1658)
0.0
La
Pr
Pr
Gd
Dy
Er
Yb
Ce
Nd
Eu
Tb
Ho
Tm
Lu
Figure 4.7
Chondrite-normalized REE patterns for zircons: 1, 2 - gabbros from Markov depression
(Mid-Atlantic Ridge) (samples L1153-49 and L1097-1) (data [Zinger
et al
., 2010]); 3-5 -
rocks from Beriozovsky massif (Sakhalin Island, Russia (data [F. Lesnov]) (see Table 4.1).
intensity of brittle-plastic deformations experienced by these grains. Thus, in a weakly
deformed zircon crystal (f) the values for
238
U/
206
Pb ranged from 287 to 670. While
in a strongly deformed and recrystallized zircon crystal (g) the value of the parameter
was in the range of 4363-5473. These data led to the conclusion that redistribution of
trace elements, including REE, U, Hf and Th, accompanying the plastic deformations
of zircon crystals of the gabbro, had a significant effect on the parameters of U-Pb
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