Table 1.

Summary statistics of the multi-element geochemical data obtained (concentrations of the major elements are in wt% and that of the minor elements are in ppm).

Element	No.	Min.	Max.	Mean	STD	Skewness	Kurtosis
Na2O	12	0.72	3.80	2.80	0.88	−1.28	1.75
MgO	12	0.30	0.95	0.69	0.16	−0.97	2.34
Al2O3	12	10.8	18.5	12.8	2.27	1.74	2.6
SiO2	12	43.6	55.6	47.5	3.51	1.03	1.11
K2O	12	0.13	3.89	1.70	1.54	0.43	−1.71
CaO	12	0.03	2.72	0.55	0.77	2.48	6.02
Fe2O3	12	0.16	31.2	3.38	8.79	3.43	11.8
V	12	10.0	94.0	62.4	26.0	−1.45	1.40
Cr	12	22.0	1326	625	405	0.05	−0.86
Co	12	4.50	17.0	9.13	4.26	0.88	−0.53
Ni	12	15.3	68.6	31.4	14.0	1.83	4.23
Cu	12	1.50	4.10	2.42	0.70	1.19	2.31
Zn	12	3.30	344	68.5	95.6	2.52	7.03
Ga	12	23.5	60.4	42.3	8.66	−0.19	2.63
As	12	0.40	12820	1836	4340	2.20	3.73
Rb	12	30.4	3465	851	1081	1.58	2.08
Y	12	0.50	3.00	1.30	0.82	0.83	−0.07
Zr	12	6.10	291	60.0	99.6	2.03	2.73
Nb	12	3.80	74.1	38.5	25.5	0.18	−1.29
Cs	12	10.0	551	178	145	1.50	3.34
Ba	12	13.0	501	104	155	2.00	3.43
La	12	17.0	20.0	18.8	0.87	−0.44	0.23
Ce	12	24.0	61.0	32.0	11.6	1.99	3.28
Hf	12	2.80	14.3	5.75	3.76	1.49	1.33
Pb	12	0.90	13.2	3.06	3.88	2.22	4.21
Th	12	0.60	2.50	1.32	0.71	0.40	−1.36
U	12	5.70	9.70	7.32	1.11	0.56	0.66
Ta	12	10.5	773	259	250	1.03	0.06
Sm	12	1.00	1574	417	573	1.08	−0.24
Sc	12	1.80	92.3	35.1	31.4	0.70	−0.92