Table 2 I_geo for the investigated sediment samples.

Location	Ia	Ib	Ic	II	IIIa	IIIb	IIIc	IV	V	VI
Element
Al	−9.04	−8.53	−8.29	−10.08	−10.6	−8.72	−7.76	−8.24	−7.98	−8.5
Ti	−5.58	−4.47	−4.24	−2.37	−2.01	−2.34	−2.53	−2.81	−2.8	−2.65
Cr	−5.16	−5.81	−5.75	−9.32	−9.03	−8.79	−8.35	−8.71	−8.4	−8.85
Mn	−9.69	−9.43	−8.39	−11.61	−11.5	−8.67	−9.05	−10.34	−8.38	−8.48
Fe	−7.11	−6.86	−6.20	−8.87	−7.22	−6.76	−7.38	−7.76	−8.59	−8.05
Co	−2.91	−2.88	−2.54	−3.39	−3.75	−2.37	−2.02	−2.35	−1.98	−2.63
Ni	−5.98	−6.14	−5.71	−6.53	−6.61	−5.65	−5.4	−5.83	−5.54	−6.33
Cu	−1.31	−1.89	−1.10	−3.66	−4.94	−2.07	−2.58	−2.88	−2.13	−2.6
Zn	−3.37	−3.59	−1.80	−4.45	−3.48	−3.26	−3.7	−4.2	−2.8	−3.52
Cd	−0.54	0.22	4.15	−1.66	−2.16	−0.53	−1.00	−1.62	0.02	−0.15
Pb	−2.61	−2.40	−2.51	−3.72	−5.81	−2.37	−2.07	−2.21	−3.50	−2.64

Location	VIIa	VIIb	VIIIa	VIIIb	VIIIc	Ixa	Ixb	Ixc	X	Xia	Xib
Element
Al	−9.38	−9.17	−9.3	−9.37	−8.68	−8.99	−9.54	−8	−7.42	−8.63	−6.69
Ti	−2.27	−2.72	−2.05	−2.23	−2.36	−2.06	−2.39	−2.3	−2.24	−2.29	−2.76
Cr	−9.89	−9.64	−10.01	−9.73	−9.53	−9.88	−9.91	−9.14	−8.75	−9.57	−8.52
Mn	−11.37	−9.57	−12.17	−11.45	−10.84	−11.77	−10.56	−10.09	−9.46	−10.94	−7.44
Fe	−8.73	−9.02	−8.53	−8.35	−8.25	−8.45	−8.39	−7.36	−6.79	−7.84	−6.18
Co	−0.99	−1.74	−2.09	−2.08	−1.27	−2.46	−1.73	−0.85	−0.46	−1.34	−0.94
Ni	−7.04	−6.62	−6.91	−6.9	−6.52	−6.88	−6.91	−6.45	−6.13	−6.44	−5.67
Cu	−3.02	−2.73	−2.55	−2.69	−2.25	−3.24	−3.3	−2.79	−2.4	−2.19	−2.47
Zn	−3.43	−4.03	−4.37	−4.88	−4.23	−4.54	−5.01	−5.31	−4.14	−4.57	−5.08
Cd	−0.92	−0.44	−0.59	−1.13	−0.49	−0.76	−1.18	−1.06	−0.79	−0.61	−1.17
Pb	0.89	−5.72	−2.95	−2.62	−2.51	−0.33	−3.05	−2.14	−1.19	−1.97	−2.62

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