Early Permian age of granite pebbles from an Eocene or Oligocene conglomerate of the Internal Rif belt (Alboran domain, Morocco): hypothesis on their origin

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Table 1

Major and trace elements analyses of C2-4 and CG granite samples (this study) and of granite pebbles studied by Gigliuto et al. (2004).

	This study		Gigliuto et al. (2004)

Provenance	Jebha conglomerate		Beni Ider flysch				Ghomarides cover

Sample	C2-4	CG	Vu4	CR1	AC8	AC22	BM12	CR8	CR10
SiO₂	72.3	72.2	72.72	72.66	74.11	73.44	77.93	72.23	71.49
Al₂O₃	14.3	13.5	14.21	14.29	14.22	13.67	12.06	14.68	14.48
Fe₂O₃	1.84	1.79	1.7	1.58	0.69	2.17	0.42	1.93	1.93
CaO	1.2	0.82	0.87	0.73	0.56	0.73	0.38	1.09	1.04
MgO	0.46	0.54	0.52	0.41	0.19	0.56	0.13	0.63	0.61
Na₂O	3.57	3.22	2.79	2.83	3.29	2.98	3.49	3.13	2.99
K₂O	4.7	4.49	5.02	5.29	5.69	4.76	4.88	4.58	4.82
Cr₂O₃	< 0.01	< 0.01
TiO₂	0.23	0.26	0.16	0.2	0.13	0.3	0.05	0.26	0.28
MnO	0.03	0.03	0.02	0.02	0.01	0.03	0.01	0.02	0.02
P₂O₅	0.13	0.19	0.2	0.15	0.23	0.18	0.02	0.17	0.17
LOI	0.51	0.99	1.77	1.26	0.82	1.15	0.65	1.36	1.26
Total	99.27	98.03	99.98	99.42	99.94	99.97	100.02	100.08	99.09

Ag	< 0.5	< 0.5
As	1.6	1.3
Ba	252	286	256	296	253	170	122	249	279
Bi	0.24	11.8
Cd	< 0.5	< 0.5
Co	113	135
Cr	< 10	< 10
Cs	15.65	10.95	36.9	32.3	11.9	30.7	0.9	22.3	21.4
Cu	4	13
Ga	20.1	21.3	20	21	16	20	19	19	19
Hf	3.8	4.3	2.9	3.6	2	3	3.7	3.3	3.3
Hg	0.194	0.222
Li	80	50
Mo	< 1	< 1
Nb	9.3	12	12	15	15	14	14	12	12
Ni	6	4
Pb	50	35
Rb	250	276	318	310	300	289	125	257	267
Sb	< 0.05	0.13
Sc	3	4	2	3	2	5	3	4	4
Se	< 0.2	0.4
Sn	8	22	17	18	12	9	3	9	8
Sr	87	84.6	128	130	88	52	34	101	102
Ta	1.5	1.7	2.7	3	3.9	1.9	3.8	1.9	1.9
Te	< 0.01	0.13
Th	13.45	13.55	9.8	12.8	4.9	11.4	19	12	12.5
Tl	1.2	1.2
U	2.34	2.24	3.1	3.8	1.8	2.3	2.2	2.2	2.2
V	13	15
W	563	668
Y	19.7	18	12	16	5	20	48	11	11
Zn	109	22
Zr	134	129	103	126	57	106	74	118	115

La	21.9	29.9	19.1	27.9	9.4	22.8	14	21.2	22.4
Ce	47.6	70.7	37.7	54.9	19.5	47.8	44.9	44.3	49.3
Pr	5.36	8.45
Nd	21.4	33.1	15.9	23.3	8.1	21.4	14.4	19.8	21.5
Sm	4.23	6.89
Eu	0.62	1.06	0.5	0.58	0.49	0.46	0.13	0.54	0.57
Gd	3.47	4.71
Tb	0.59	0.68	0.4	0.6	0.3	0.7	1.1	0.4	0.5
Dy	3.45	3.64
Ho	0.7	0.69
Er	2.06	1.65
Tm	0.27	0.26
Yb	1.77	1.81
Lu	0.36	0.28	0.14	0.23	0.07	0.27	0.68	0.15	0.15

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