. 2024 Apr 3;10(8):e29120. doi: 10.1016/j.heliyon.2024.e29120

Table 5.

Elemental ratios of the Pisha Sandstone compared to the range values of siliciclastic sediments derived from felsic and mafic rocks, and UCC.

Elemental ratios	Average of studied samples^a			Range of sediments from felsic sources^b	Range of sediments from mafic sources^b	UCC^c
Elemental ratios	Ermaying	Heshanggou	Liujiagou	Range of sediments from felsic sources^b	Range of sediments from mafic sources^b	UCC^c
Eu/Eu*	0.84	0.77	0.81	0.40–0.94	0.71–0.95	0.72
La/Sc	6.27	3.26	7.98	2.50–16.3	0.43–0.86	2.21
La/Co	5.37	2.65	12.36	1.80–13.8	0.14–0.38	1.79
Th/Sc	1.69	0.67	1.45	0.84–20.5	0.05–0.22	0.75
Th/Co	1.35	0.54	2.17	0.67–19.4	0.04–1.40	0.61
Cr/Th	5.7	8.83	2.97	4.00–15.0	25–500	8.76

This study.

Cullers [63,65]; Cullers and Podkovyrov [66].

Rudnick and Gao [48].