Genesis of the columnar joints from welded tuff in Mount Mudeung National Geopark, Republic of Korea

Lim, Chungwan; Huh, Min; Yi, Keewook; Lee, Changyeol

doi:10.1186/s40623-015-0323-y

Earth, Planets and Space

Table 1 Major elemental analyses of the four colonnades from Mt. Mudeung

From: Genesis of the columnar joints from welded tuff in Mount Mudeung National Geopark, Republic of Korea

Sample	Ipseok-dae-001	Ipseok-dae-002	Ipseok-dae-003	Ipseok-dae-004	Ipseok-dae-005	Ipseok-dae-006	Ipseok-dae-007	Ipseok-dae-008
SiO₂	58.75	63.02	62.74	61.72	62.31	62.75	58.02	62.28
TiO₂	0.54	0.53	0.50	0.51	0.50	0.54	0.50	0.50
Al₂O₃	20.06	17.66	18.08	18.00	17.38	16.95	20.59	18.42
Fe₂O₃	1.07	1.35	1.23	1.10	1.45	1.00	1.55	1.46
FeO	4.78	2.67	4.29	4.18	3.42	3.01	4.60	2.97
MnO	0.00	0.00	0.01	0.01	0.05	0.03	0.00	0.00
MgO	0.70	1.71	−0.28	0.71	1.70	1.91	0.76	1.36
CaO	8.24	4.83	5.21	6.07	5.47	5.42	8.99	5.49
Na₂O	4.81	6.26	6.01	5.94	5.83	6.41	4.43	5.82
K₂O	0.35	0.75	0.70	0.58	0.65	0.70	0.32	0.64
P₂O₅	0.00	0.02	0.00	0.00	0.00	0.07	0.00	0.03
Total	99.30	98.79	98.50	98.82	98.77	98.79	99.76	98.96
Sample	Seosuk-dae-011	Seosuk-dae-012	Seosuk-dae-013	Seosuk-dae-014	Seosuk-dae-015	Seosuk-dae-016	Seosuk-dae-017	Seosuk-dae-018
SiO₂	63.20	64.62	63.19	66.24	64.22	60.66	63.25	62.13
TiO₂	0.50	0.52	0.50	0.50	0.51	0.52	0.51	0.51
Al₂O₃	16.26	16.06	16.92	14.52	16.74	18.72	17.09	19.65
Fe₂O₃	1.61	1.17	1.47	1.59	1.49	0.92	0.64	1.51
FeO	3.33	4.28	3.39	2.28	3.57	4.13	3.26	2.28
MnO	0.00	0.01	0.00	0.00	0.00	0.01	0.01	0.02
MgO	2.72	1.71	1.74	0.72	0.55	1.77	2.59	0.92
CaO	4.89	3.92	5.01	6.92	4.75	7.08	4.93	5.81
Na₂O	6.37	6.74	6.38	6.01	6.39	5.40	6.33	6.03
K₂O	0.73	0.78	0.65	0.77	0.69	0.39	0.67	0.60
P₂O₅	0.04	0.03	0.08	0.06	0.01	0.00	0.06	0.03
Total	99.64	99.84	99.34	99.61	98.92	99.59	99.33	99.48
Sample	Gwangseok-dae-021	Gwangseok-dae-022	Gwangseok-dae-023	Gwangseok-dae-024	Gwangseok-dae-025	Gwangseok-dae-026	Gwangseok-dae-027	Gwangseok-dae-028
SiO₂	61.86	60.12	61.94	62.05	62.29	62.96	63.40	61.91
TiO₂	0.51	0.50	0.52	0.51	0.51	0.51	0.52	0.54
Al₂O₃	16.35	17.49	15.51	16.36	16.22	15.56	15.28	15.91
Fe₂O₃	1.75	1.83	2.35	1.31	1.35	1.70	1.48	1.54
FeO	4.28	4.52	3.26	4.31	4.29	3.32	4.25	4.78
MnO	0.00	0.02	0.02	0.02	0.00	0.02	0.01	0.00
MgO	1.65	1.87	3.20	1.71	1.70	4.01	2.73	2.70
CaO	5.78	6.82	5.92	5.54	5.38	4.85	4.61	5.38
Na₂O	6.01	5.30	5.92	6.11	6.19	6.37	6.59	6.06
K₂O	0.48	0.44	0.50	0.47	0.51	0.60	0.43	0.45
P₂O₅	0.04	0.00	0.02	0.02	0.00	0.05	0.03	0.00
Total	98.72	98.92	99.15	98.38	98.45	99.96	99.32	99.26
Sample	Chotdae-bong-031	Chotdae-bong-032	Chotdae-bong-033	Chotdae-bong-034	Chotdae-bong-035	Chotdae-bong-036	Chotdae-bong-037	Chotdae-bong-038
SiO₂	62.73	60.57	58.15	63.25	60.71	63.13	62.36	64.27
TiO₂	0.50	0.50	0.55	0.50	0.57	0.50	0.50	0.52
Al₂O₃	15.88	18.03	18.49	15.70	17.91	15.38	16.53	15.29
Fe₂O₃	1.71	1.85	2.05	1.50	1.10	1.87	1.67	1.58
FeO	4.31	2.22	4.30	4.28	3.27	4.78	4.57	4.00
MnO	0.00	0.01	0.00	0.00	0.00	0.01	0.00	0.01
MgO	1.73	2.20	2.01	2.34	2.14	1.71	1.70	1.71
CaO	5.00	7.24	8.90	5.04	7.18	4.86	5.56	4.25
Na₂O	6.15	5.10	4.24	6.32	5.28	6.29	6.19	6.67
K₂O	0.74	0.44	0.30	0.72	0.45	0.70	0.52	0.82
P₂O₅	0.04	0.00	0.02	0.07	0.09	0.06	0.00	0.03
Total	98.79	98.16	99.01	99.71	98.69	99.28	99.60	99.15

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