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Fig. 1
Simplified geological map of the Polish part of the Western Carpathians (after Żelaźniewicz el al., 2011, modified) with the location of the investigated samples (shown as yellow dots).
Fig. 2
Field photo (a) of the Bugaj granitoid (sample Bu1) and field photo (b) of the Andrychów orthogneiss (sample An).
Fig. 3
Classification position of the Bugaj granitoids in: (a) alkali (K2O + Na2O) versus SiO2 (TAS) classification diagram (Middlemost, 1985); (b) Primitive mantle-normalized (Sun and McDonough, 1989) multielement “spider” diagrams; (c) classification position of the Bugaj granitoids in Multicationic R1–R2 diagram (De La Roche et al.,1980), with fields numbered according to Batchelor and Bowden (1985); 1 – mantle fractionates, 2 – pre-plate collision suites, 3 – post-collision suites, 4 – late orogenic magmas, 5 – anorogenic suites, 6 – syncollisional (anatectic) suites. R1 = 4Si − 11(Na + K) − 2(Fe + Ti); R2 = 6Ca + 2 Mg + Al.
Fig. 4
Secondary electron (SE) images of selected zircon crystals from granite sample Bu1. See text for description.
Fig. 5
Compiled cathodoluminescence (CL) images showing the range of textures observed in zircon crystals from granite sample Bu1. See text for details. The white rectangles show the approximate location of laser ablation trenches (confirmed by re-inspecting grains under CL after the LA analysis) and are not to scale. The numbers refer to the analytical data presented in Table 3.
Fig. 6
Tera-Wasserburg diagrams presenting the U/Pb age of the zircons from granite sample Bu1: a) all data points; b) concordant to sub-concordant data points. The inherited xenocryst (p2Bu_23) and the three data points showing recent lead loss (p3Bu_01/1, p3Bu_01/1, p3Bu_09/1) are not shown.
Fig. 7
Secondary electron (SE) images of selected zircon crystals from orthogneiss sample An. See text for description.
Fig. 8
Compiled cathodoluminescence (CL) images showing the range of textures observed in zircon crystals from orthogneiss sample An. See text for details. The white rectangles show the approximate location of laser ablation trenches (confirmed by re-inspecting grains under CL after the LA analysis) and are not to scale. The numbers refer to the analytical data presented in Table 3.
Fig. 9
Tera-Wasserburg diagrams for isotopic ratio for zircon crystals from orthogneiss sample An: a) all data points; b) concordant to sub-concordant data points defining a discordia line with a lower intercept of 542 ± 21 Ma (forced through data point p3An_06/1). The inherited xenocrysts (p3An_06/1, p3An_06/2) and the two data points showing recent lead loss (p3An_08, p3An_13) are not shown.
Rb-Sr and Sm-Nd whole rock isotope analysis of Bugaj granitoid rocks.
Isotope data
87Rb/86Sr
±2sm
87Sr/86Sr
±2sm
147Sm/144Nd
±2sm
143Nd/144Nd
±2sm
Sr(580 Ma)
Nd(580 Ma)
Nd(CHUR)
Bugaj1
3.154
0.032
0.756053
0.000004
0.1521
0.0015
0.512397
0.000004
0.729966
0.511819
–1.4
Bugaj2
3.236
0.032
0.755499
0.000004
0.1366
0.0014
0.512428
0.000005
0.728739
0.511909
0.4
Chemical composition and selected petrological indicators of Bugaj granitoid rocks.
Sample No
Bu1
Bu2
BuC
SiO2
71.56
67.58
60.03
TiO2
0.38
0.7
0.98
Al2O3
14.13
14.89
16.63
Fe2O3T
3.04
5.31
8.32
MnO
0.06
0.09
0.14
MgO
0.77
1.34
2.46
CaO
0.92
1.5
1.89
Na2O
3.36
3.83
3.33
K2O
4.79
3.36
4.86
P2O5
0.11
0.22
0.18
LOI
0.71
1.13
0.9
Total
99.83
99.95
99.72
Sr
121.2
128
152.3
Ba
578
562
793
Rb
135.6
146.9
219.3
Cs
8.3
10.3
13.1
Th
11
11.7
1.3
U
2.6
1.4
10.1
Ga
16
20.4
20.5
Cr
82
109.5
116.3
Ni
11
14
27.9
V
43
75
135
Zr
150.9
283.6
226.8
Hf
4.9
7.6
6.2
Y
42.9
37.9
27
Nb
9.8
15.4
16.1
Ta
0.8
1.1
0.9
La
24.6
30.3
27.9
Ce
52.6
62.4
61.9
Pr
6.35
7.56
7.06
Nd
24.7
30.6
27.3
Sm
5.96
6.63
5.64
Eu
0.75
0.87
1.01
Gd
6.04
6.9
5.45
Tb
0.99
0.99
0.89
Dy
6.96
6.97
4.9
Ho
1.49
1.3
0.95
Er
4.32
3.62
3.1
Tm
0.69
0.56
0.41
Yb
4.56
3.67
2.69
Lu
0.64
0.5
0.42
ASI
1.17
1.23
1.21
#mg
0.56
0.7
0.31
Rb/Sr
1.12
1.15
1.44
ΣREE
140.65
162.87
149.62
Eu/Eu*
0.8
0.39
0.56
CeN/YbN
3.18
4.68
6.34
ThN/UN
1.04
2.06
0.03
TZr [°C]
798
850
818
LA-MC-ICP-MS U–Pb zircon data from exotic mega blocks (samples An and Bu1).