REE Geochemistry of Euphrates River, Turkey

Table 1

Summary statistical values of REE from Euphrates River sediments. Density values (g/cm³) taken from Gupta and Krishnamurthy [45]. Sediments from Sholkovitz [46]. Calculated εNd and 1000/Sr data from Martin and McCulloch [4]; Burke et al. [1]; Bussy [2]; Akgül et al. [47], ⁺Mensel et al. [48].

(a)

LREE	Density	Max./min. values	Euphrates River (ppm)	Mississippi River	Amazon River	HREE	Density	Max./min. values	Euphrates River (ppm)	Mississippi River	Amazon River
La	6.14	3.4/15.9	8.57	60.8	349	Tb	8.23	0.18/0.47	0.33	—	—
Ce	8.16	7.5/34.4	18.11	125.4	707	Dy	8.55	0.63/3.12	2.17	7.46	39.7
Pr	6.77	0.88/4.46	2.22	—	—	Ho	8.79	0.17/0.63	0.43	—	—
Nd	7.00	5.39/12.1	7.70	56.4	355	Er	9.06	0.43/1.67	1.20	4.94	21.7
Sm	7.52	0.82/4.05	2.14	—	—	Tm	9.32	0.05/0.28	0.17	—	—
Eu	5.24	0.23/0.82	0.57	2.11	10.9	Yb	6.96	0.29/1.59	1.11	3.94	20.5
Gd	7.90	0.44/3.65	2.20	9.86	46.3	Lu	9.84	0.02/0.23	0.15	0.47	3.02
Mean			5.93	—	—	Mean			0.79	—	—
St. deviation			6.18	—	—	St. deviation			0.74	—	—

(b)

The result of isotopic composition of the studied sediments and some examples in the world
Sample code	^143Nd/^144Nd	^87Sr/^86Sr	εNd (0)		1000/Sr
A43	0.512654	0.7053	0.35		16.1
A61	0.512836	0.7048	3.9		13.74
A89	0.512775	0.7057	2.7		13.17
Basaltic soil^+	0.511783	0.705603	2.26		3.9
Metased. soil^+	0.512501	0.709646	−2.67		6.57
Metagreywackes^+	0.512847	0.705374	4.08		2.49
Sediments^+	0.512805	0.704583	3.26		4.0
Jurassic-Cretaceous sediments	—	0.707–0.708	—		—
Arve River sediments	—	0.728	—		Related to Mont-Blanc granite
		0.704	—		Carbonate-rich rocks
Elazığ Magmatites Upper Cretaceous	0.512414–0.512851	0.706022–0.708451	7.5	Diorites and granites	—
			3.5		—