Geochemical, Mineralogical, and Geomorphological Characterization of Ash Materials as a Tracer for the Origin of Shifting Sands near Oldupai Gorge, Ngorongoro, Tanzania

Table 2

Major and minor oxides (wt%) and trace elements (ppm) of SS, OTS, OLA, and NCA samples (EDXRF data are not normalized).

	SiO2	Al2O3	FeO (t)	CaO	Na2O	K2O	TiO2	MgO	SO3	P2O5	LOI	V	Mn	Ni	Zn	As	W	Cu	Ba	Y	Zr
	wt%											Ppm
SS 01	42.12	5.97	12.12	16.39	6.22	0.67	3.17	9.45	0.34	0.38	0.89	812	2071	39	162	58	1.78	55	626	37	537
SS 02	43.43	6.57	12.57	15.71	5.24	1.01	2.97	8.78	0.39	0.30	1.05	804	2079	34	167	48	1.79	49	630	35	530
SS 03	41.59	6.48	11.77	15.17	5.68	0.45	2.97	10.16	0.41	0.41	1.09	824	2055	41	155	55	1.64	46	647	39	525
SS 04	43.44	7.76	11.61	16.16	6.22	0.78	3.14	8.14	0.31	0.32	1.11	829	2049	34	152	65	1.55	54	655	47	528
SS 05	44.27	6.16	12.01	16.13	4.89	0.97	3.33	8.21	0.33	0.31	1.05	824	2068	41	189	57	1.45	57	658	48	549
SS 06	42.04	6.49	13.01	15.81	4.98	0.65	3.26	9.17	0.48	0.40	0.85	820	2020	42	164	48	1.89	61	624	41	573
SS 07	42.41	7.11	13.12	15.33	5.73	0.61	3.17	8.16	0.49	0.42	0.94	822	2089	48	184	47	1.84	65	635	43	544
SS 08	41.76	6.37	12.73	16.03	5.24	0.62	3.64	8.14	0.37	0.41	0.97	810	2054	39	158	49	1.44	57	641	47	541
OTS 01	44.12	10.72	8.87	13.48	5.88	1.19	2.24	1.84	0.24	0.49	5.86	149	2351	116	205	49	1.08	105	1086	34	609
OTS 02	43.91	9.89	9.11	13.75	6.41	2.02	2.62	2.05	0.41	0.42	5.75	121	2298	124	195	45	1.22	120	968	45	564
OTS 03	43.88	9.69	9.17	13.07	6.11	1.91	2.92	2.14	0.46	0.52	4.85	145	2248	136	145	48	1.45	142	956	45	582
OTS 04	43.71	9.14	8.49	13.42	5.45	2.11	2.47	2.41	0.56	0.55	5.42	162	2298	156	168	67	1.65	163	987	41	612
OTS 05	44.41	9.45	8.83	13.41	5.63	2.04	2.47	2.01	0.47	0.58	5.68	145	2314	122	157	59	1.35	125	1021	46	632
OTS 06	45.01	10.74	9.13	13.14	5.14	1.14	2.79	2.02	0.56	0.41	5.63	124	2365	141	175	58	1.24	111	1045	42	624
OTS 07	43.43	9.73	9.76	13.11	5.19	1.91	2.99	2.78	0.78	0.48	4.44	155	2395	178	164	47	1.45	123	1033	47	598
OTS 08	43.89	9.27	9.48	12.79	6.75	1.43	2.38	2.47	0.72	0.57	4.89	133	2244	154	146	64	1.32	124	1092	48	574
OLA 01	42.11	7.11	11.14	14.88	4.12	1.11	2.94	3.23	0.49	0.70	4.45	126	2911	28	289	46	1.19	105	1700	59	679
OLA 02	41.91	6.83	10.63	15.09	3.93	1.14	3.11	3.23	0.58	0.79	4.65	153	2916	22	279	41	1.14	95	1717	47	817
OLA 03	42.11	6.96	10.62	14.41	3.82	1.07	3.21	3.23	0.41	0.66	5.05	147	2844	24	289	31	1.19	87	1817	68	645
OLA 04	41.43	7.25	10.48	14.95	5.01	1.06	3.24	3.23	0.43	0.75	3.89	185	2719	19	297	39	1.28	112	1845	59	712
OLA 05	42.75	7.11	10.72	15.15	3.71	1.05	2.81	3.23	0.39	0.74	4.11	165	2990	35	212	29	1.27	91	1847	49	634
OLA 06	41.38	7.02	10.76	15.08	4.47	1.14	3.09	3.23	0.44	0.64	5.56	147	2849	31	254	49	1.24	102	1791	47	711
OLA 07	41.22	7.06	10.78	15.07	4.16	0.89	3.45	3.23	0.49	0.76	5.78	195	2844	29	271	55	1.23	117	1844	52	694
OLA 08	42.49	7.12	9.96	15.10	4.12	0.98	3.26	3.23	0.54	0.66	5.44	158	2838	22	249	35	1.11	87	1746	55	621
NCA 01	38.87	11.62	6.25	5.16	12.51	0.56	2.45	8.98	0.00	0.22	11.55	619	1415	110	121	59	0.81	110	685	65	448
NCA 02	39.81	10.66	6.78	5.65	12.14	0.49	2.49	8.49	0.00	0.19	11.48	652	1411	98	148	46	0.86	98	655	45	389
NCA 03	37.17	9.98	6.55	5.02	12.47	0.48	2.19	8.89	0.00	0.22	13.15	635	1369	59	146	48	0.45	66	698	14	358
NCA 04	39.41	9.64	7.32	5.03	12.12	0.39	2.65	9.51	0.00	0.20	11.47	695	1357	69	495	47	0.75	95	589	45	346
NCA 05	37.71	10.11	7.11	5.32	11.94	0.38	2.11	8.69	0.00	0.26	12.86	685	1324	101	124	49	0.96	78	548	49	318
NCA 06	40.41	10.46	7.85	5.14	11.96	0.41	2.17	9.54	0.00	0.29	11.32	639	1396	98	129	43	1.12	85	576	46	396
NCA 07	40.43	10.54	6.99	4.87	12.04	0.43	2.77	9.05	0.00	0.24	12.09	647	1414	119	136	39	0.86	74	618	39	415
NCA 08	39.59	10.78	7.07	4.92	12.15	0.51	2.19	8.12	0.00	0.24	12.52	651	1425	99	128	32	0.92	95	634	55	399