Cadomian protolith ages of exotic mega blocks from Bugaj and Andrychów (Western outer Carpathians, Poland) and their palaeogeographic significance

Jolanta Burda; Beata Woskowicz-Ślęzak; Urs Klötzli; Aleksandra Gawęda

doi:10.1515/geochr-2015-0102

Figures & Tables

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).

Field photo (a) of the Bugaj granitoid (sample Bu1) and field photo (b) of the Andrychów orthogneiss (sample An).

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.

Secondary electron (SE) images of selected zircon crystals from granite sample Bu1. See text for description.

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.

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.

Secondary electron (SE) images of selected zircon crystals from orthogneiss sample An. See text for description.

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.

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
Fe₂O_3T	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
Ce_N/Yb_N	3.18	4.68	6.34
Th_N/U_N	1.04	2.06	0.03
T_Zr [°C]	798	850	818

LA-MC-ICP-MS U–Pb zircon data from exotic mega blocks (samples An and Bu1)_

Sample	Blank corrected intensities						Concentrations				Atomic ratios																Ages
Crystal	²⁰⁴Pb	²⁰⁶Pb	²⁰⁷Pb	²⁰⁸Pb	²³²Th	²³⁸_U	Pb	Th	U	Th/U	²⁰⁶Pb ²⁰⁴Pb	2RSE	²⁰⁷Pb ²³⁵U	2RSE	²⁰⁶Pb ²³⁸U	2RSE	²⁰⁷Pb Rho ²⁰⁶Pb	2RSE	²⁰⁸Pb ²⁰⁶Pb	2RSE	²⁰⁸Pb ²³²Th	2RSE	²³⁸U ²⁰⁶Pb	2RSE	²⁰⁷Pb ²⁰⁶Pb	2RSE	206/238 age	2SD	206/207 age	2SD
	(V) ×10-⁶	(V) ×10^-4	(V) ×10^-5	×(10V) ^-5	×(10V) ^-3	(V) ×10^-2	(wppm)					(%)		(%)		(%)		(%)		(%)		(%)		(%)	(%)			(Ma)
Andrychów An
p3An_02	6.10	39.0	23.0	51.0	11.0	6.30	10.1	24.4	139.9	0.17	908	8	0.6716	3.9	0.0795	3.8	0.48 0.0606	1.3	0.4316	4.9	0.0316	6.9	12.575	3.8	0.0606	1.3	493	19	624	29
p3An_03/1	7.00	68.0	41.0	97.0	28.0	10.0	17.7	64.8	140.6	0.46	1037	20	0.8044	6.3	0.0894	8.3	0.65 0.0642	4.3	0.4994	16.0	0.0228	13.1	11.189	8.3	0.0642	4.3	552	46	750	92
p3An_03/2	15.0	65.0	47.0	92.0	18.0	13.0	17.2	41.5	141.1	0.29	810	27	0.6698	10.3	0.0725	17.4	0.85 0.0681	16.1	0.4145	11.5	0.0357	22.5	13.799	17.4	0.0681	16.1	451	78	871	334
p3An_04/1	4.20	42.0	23.0	37.0	9.60	6.20	10.4	21.9	139.9	0.16	1241	8	0.7043	11.8	0.0873	10.8	0.46 0.0587	1.3	0.2440	11.8	0.0253	10.6	11.448	10.8	0.0587	1.3	540	58	554	29
p3An_04/2	4.90	35.0	20.0	41.0	11.0	4.90	9.1	25.3	139.7	0.18	1130	10	0.7178	12.0	0.0885	9.6	0.40 0.0591	2.5	0.3477	6.1	0.0224	10.3	11.295	9.6	0.0591	2.5	547	53	572	54
p3An_06/1	4.40	120	140	220	14.0	3.70	33.3	31.8	139.5	0.23	3187	14	7.2106	12.5	0.3956	13.2	0.53 0.1319	1.3	0.5778	4.2	0.0870	25.5	2.528	13.2	0.1319	1.3	2149	284	2123	23
p3An_06/2	5.00	190	200	98.0	7.90	9.20	47.1	18.1	140.4	0.13	nd	nd	4.2498	7.3	0.2650	8.7	0.59 0.1138	1.1	0.1669	23.5	0.0849	10.1	3.774	8.7	0.1138	1.1	1515	132	1861	20
p3An_07	4.70	64.0	38.0	80.0	25.0	10.0	16.5	58.1	140.5	0.41	1767	16	0.7138	9.9	0.0800	14.2	0.71 0.0646	3.7	0.3529	8.5	0.0219	14.5	12.500	14.2	0.0646	3.7	496	70	761	79
p3An_08	5.00	150	140	170	17.0	8.00	39.9	39.3	140.2	0.28	3863	15	3.0343	15.2	0.2317	15.5	0.51 0.0947	0.5	0.3318	5.8	0.0696	10.8	4.316	15.5	0.0947	0.5	1343	208	1521	9
p3An_09	6.60	70.0	43.0	120	31.0	10.0	18.8	70.9	140.5	0.50	1540	15	0.8438	9.6	0.0933	11.5	0.60 0.0644	3.7	0.4983	7.2	0.0267	10.5	10.717	11.5	0.0644	3.7	575	66	753	79
p3An_10	5.80	55.0	32.0	93.0	28.0	7.20	14.7	63.3	140.1	0.45	1259	2	0.8063	5.7	0.0950	5.6	0.49 0.0613	0.9	0.4459	2.9	0.0224	8.3	10.523	5.6	0.0613	0.9	585	33	649	20
p3An_11	6.90	24.0	17.0	33.0	8.5	3.50	6.3	19.4	139.5	0.14	580	19	0.9325	10.9	0.0969	9.3	0.43 0.0690	8.6	0.3371	12.2	0.0261	15.1	10.317	9.3	0.0690	8.6	596	55	899	177
p3An_12/1	4.60	47.0	27.0	10.0	2.2	6.90	11.0	5.1	140.0	0.04	nd	nd	0.6993	8.5	0.0850	9.1	0.53 0.0595	0.7	0.0568	8.1	0.0301	7.2	11.764	9.1	0.0595	0.7	526	48	587	15
p3An_12/2	4.90	19.0	12.0	16.0	5.5	2.40	4.8	12.5	139.3	0.09	473	11	1.0174	17.2	0.1134	15.9	0.46 0.0642	3.8	0.2989	40.0	0.0204	18.4	8.821	15.9	0.0642	3.8	692	110	750	80
p3An_13	25.0	52.0	67.0	110	19.0	13.0	15.1	43.7	141.1	0.31	193	40	0.9691	11.9	0.0507	22.8	0.96 0.1481	17.2	0.6235	26.8	0.0780	39.6	19.741	22.8	0.1481	17.2	319	73	2324	295
Bugaj Bu1
p2Bu_01	14.0	44.0	37.0	63.0	12.0	5.80	11.8	27.5	139.8	0.20	341	14	0.8705	5.0	0.0947	4.0	0.40 0.0624	3.7	0.2605	7.2	0.0209	7.4	10.560	4.0	0.0624	3.7	583	23	688	79
p2Bu_05	nd	44.0	28.0	85.0	12.0	4.50	12.0	27.2	139.6	0.19	nd	nd	0.8737	6.3	0.1071	6.6	0.52 0.0592	0.9	0.5936	20.8	0.0263	8.7	9.341	6.6	0.0592	0.9	656	43	573	19
p2Bu_08	6.80	58.0	38.0	81.0	11.0	6.60	15.3	26.3	140.0	0.19	1018	11	0.7378	6.4	0.0896	7.1	0.55 0.0597	1.1	0.3524	8.2	0.0217	6.6	11.157	7.1	0.0597	1.1	553	39	592	25
p2Bu_10/1	50.0	85.0	93.0	180	190	16.0	24.6	435.3	141.5	3.08	931	187	0.7942	38.6	0.1102	177.8	2.31 0.0287	1356	0.0650	3667	0.0207	217.6	9.073	177.8	0.0287	1356	674	1199	-	-
p2Bu_10/2	25.0	180	120	270	38.0	20.0	47.8	87.8	142.3	0.62	946	6	0.7912	8.6	0.0928	9.0	0.52 0.0611	2.9	0.3029	10.6	0.0221	7.9	10.776	9.0	0.0611	2.9	572	52	643	62
p2Bu_19	17.0	89.0	57.0	76.0	9.70	10.0	22.4	22.1	140.6	0.16	nd	nd	0.7638	3.2	0.0967	3.1	0.49 0.0575	0.4	0.3044	42.1	0.0244	5.9	10.339	3.1	0.0575	0.4	595	18	510	9
p2Bu_23	14.0	110	130	270	11.0	4.30	33.5	26.1	139.6	0.19	992	1	4.6704	5.0	0.3121	4.5	0.45 0.1084	1.3	0.5018	4.7	0.0751	6.1	3.204	4.5	0.1084	1.3	1751	78	1773	25
p2Bu_30	7.80	88.0	56.0	170	22.0	10.0	24.0	50.8	140.6	0.36	nd	nd	0.7806	9.3	0.0978	7.6	0.41 0.0578	1.7	0.3649	33.3	0.0237	14.5	10.229	7.6	0.0578	1.7	601	46	524	37
2Bu_32	9.90	54.0	35.0	50.0	5.80	5.90	13.7	13.3	139.9	0.09	801	3	0.7487	5.2	0.0931	5.6	0.54 0.0584	0.7	0.2113	22.7	0.0269	5.1	10.742	5.6	0.0584	0.7	574	32	546	15
p2Bu_35/1	8.60	59.0	38.0	53.0	6.10	6.90	14.8	14.1	140.0	0.10	723	8	0.7295	5.2	0.0877	7.3	0.70 0.0598	2.1	0.2684	25.8	0.0252	16.0	11.405	7.3	0.0598	2.1	542	40	597	45
p2Bu_35/2	7.80	84.0	56.0	39.0	4.10	8.90	20.4	9.5	140.4	0.07	863	74	0.8119	24.6	0.0960	34.0	0.69 0.0606	6.9	0.1682	122.6	0.0356	36.3	10.420	34.0	0.0606	6.9	591	201	624	149
p3Bu_01/1	11.0	61.0	51.0	69.0	55.0	12.0	15.8	125.9	140.9	0.89	546	30	0.7773	8.6	0.0692	4.3	0.25 0.0839	9.0	0.4171	20.2	0.0128	21.3	14.460	4.3	0.0839	9.0	431	19	1290	176
p3Bu_01/2	4.60	15.0	11.0	17.0	11.0	2.10	3.8	25.3	139.2	0.18	nd	nd	0.8730	17.3	0.0946	11.9	0.35 0.0646	19.5	0.3371	54.8	0.0198	24.3	10.569	11.9	0.0646	19.5	583	69	762	412
p3Bu_01/3	17.0	48.0	42.0	120	83.0	8.30	14.0	189.3	140.3	1.35	453	22	0.8695	6.4	0.0800	9.1	0.71 0.0814	10.4	0.9599	19.5	0.0218	15.0	12.506	9.1	0.0814	10.4	496	45	1232	204
p3Bu_03/1	nd	1.80	1.10	1.20	0.740	0.250	0.4	1.7	138.9	0.01	nd	nd	0.9325	36.6	0.1145	39.4	0.54 0.0599	6.2	0.2290	15.0	0.0153	106.6	8.736	39.4	0.0599	6.2	699	276	599	135
p3Bu_03/2	4.20	0.780	0.51	0.57	0.390	0.110	0.2	0.9	138.9	0.01	40	11	0.9258	14.2	0.1104	13.4	0.47 0.0609	4.3	0.2333	6.9	0.0196	16.7	9.054	13.4	0.0609	4.3	675	90	636	92
p3Bu_04	4.00	0.980	0.67	0.50	0.350	0.150	0.2	0.8	138.9	0.01	nd	nd	0.8442	21.7	0.0930	23.3	0.54 0.0646	9.0	0.1726	20.3	0.0140	70.5	10.749	23.3	0.0646	9.0	573	133	761	189
p3Bu_09/1	42.0	33.0	52.0	120	76.0	7.30	10.8	175.0	140.1	1.25	199	25	2.1793	196.9	0.1178	133.3	0.34 0.1021	96.8	0.7533	129.5	0.0158	695.3	8.488	133.3	0.1021	96.8	718	957	1663	1791
p3Bu_09/2	5.80	35.0	24.0	75.0	29.0	5.50	9.7	66.8	139.8	0.48	720	4	0.8187	4.0	0.0926	2.4	0.29 0.0645	3.6	0.9196	17.5	0.0279	4.4	10.799	2.4	0.0645	3.6	571	13	758	76
p3Bu_10	nd	16.0	10.0	30.0	12.0	2.50	4.4	26.7	139.3	0.19	nd	nd	0.7826	1.9	0.0956	1.7	0.44 0.0592	0.6	0.6439	3.7	0.0284	2.2	10.459	1.7	0.0592	0.6	589	10	576	13
p3Bu_12	5.40	32.0	20.0	31.0	12.0	4.90	8.1	26.9	139.7	0.19	567	6	0.7593	11.7	0.0936	10.2	0.44 0.0588	3.2	0.4832	241.3	0.0287	19.4	10.679	10.2	0.0588	3.2	577	59	559	69
p3Bu_13/1	4.60	24.0	15.0	23.0	8.10	3.60	6.0	18.6	139.5	0.13	nd	nd	0.7762	3.9	0.0943	4.9	0.63 0.0596	1.9	0.5016	75.8	0.0295	21.6	10.603	4.9	0.0596	1.9	581	28	589	41
p3Bu_13/2	6.80	15.0	9.90	8.10	6.40	2.30	3.6	14.7	139.3	0.11	346	61	0.8443	39.7	0.0908	21.5	0.27 0.0670	27.5	0.2070	122.8	0.0159	110.5	11.014	21.5	0.0670	27.5	560	120	838	573
p3Bu_14	4.00	16.0	9.80	15.0	5.90	2.40	4.0	13.4	139.3	0.10	119	15	0.7477	4.0	0.0892	4.6	0.58 0.0607	0.9	0.5905	20.3	0.0288	5.2	11.216	4.6	0.0607	0.9	551	25	630	20
p3Bu_15	5.30	2.10	1.60	3.20	1.70	0.320	0.6	4.0	138.9	0.03	52	12	0.9670	14.2	0.0905	13.8	0.49 0.0762	7.9	0.5176	12.7	0.0196	17.1	11.045	13.8	0.0762	7.9	559	77	1099	158

Cadomian protolith ages of exotic mega blocks from Bugaj and Andrychów (Western outer Carpathians, Poland) and their palaeogeographic significance

Figures & Tables

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Fig. 9

Rb-Sr and Sm-Nd whole rock isotope analysis of Bugaj granitoid rocks_

Chemical composition and selected petrological indicators of Bugaj granitoid rocks_

LA-MC-ICP-MS U–Pb zircon data from exotic mega blocks (samples An and Bu1)_

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