Paleointensity determination of Late Cretaceous basalts in northwest South Korea: implications for low and stable paleofield strength in the Late Cretaceous

Earth, Planets and Space

Table 2. Paleointensity results obtained from basalts in Yeoncheon.

Site	Sample	T_min−T_max (°C)	Paleointensity selection criteria^a							B (μT)	B_m±σ_m (μT)	VADM_mσ_m (10²² Am²)
Site	Sample	T_min−T_max (°C)	N_p	MAD	DANG	σǀbǀ	f	CK_error	q	B (μT)	B_m±σ_m (μT)	VADM_mσ_m (10²² Am²)
							Lava flows
YC05	05–17	450–585	9	2.1	1.5	0.069	0.97	1.5	11.9	13.4	13.1±4.3	2.3±0.8
	05–19	520–585	7	2.5	0.9	0.025	0.76	4.4	22.9	18.6
	05–20	450–585	9	2.9	2.7	0.061	0.82	2.8	10.9	8.1
	05–26	450–585	9	1.8	3.4	0.069	0.88	3.3	10.6	12.4
YC07	07–20	450–585	9	1.9	0.9	0.058	0.93	2.0	12.7	15.5	18.6±3.3	3.3±0.6
	07–21	450–585	9	1.7	0.2	0.072	0.98	3.7	11.1	18.3
	07–26	450–585	9	2.2	0.4	0.074	0.91	4.3	10.2	22.0
YC08	08–14	450–585	9	1.8	1.2	0.051	0.95	3.1	15.3	12.3	13.9±2.2	2.5±0.4
	08–19	450–585	7	1.5	0.7	0.057	0.95	4.8	12.4	15.5
YC09	09–02	450–585	9	4.3	4.9	0.069	0.85	3.3	10.1	8.4	21.3±8.5	3.8±1.5
	09–13	450–585	9	3.6	1.8	0.069	0.85	3.9	10.6	17.1
	09–14	450–585	7	2.5	0.5	0.071	0.94	4.4	10.2	25.9
	09–21	450–585	9	2.8	0.9	0.059	0.81	3.7	11.1	29.0
	09–29	450–585	7	2.4	0.4	0.059	0.93	3.9	12.0	26.1
YC10	10–04	450–585	7	2.8	4.0	0.042	0.85	4.9	13.6	20.4	20.4	3.6
										Mean:	20.4 17.5±3.7	3.6 3.1±0.7

T_min−T_max: the temperature interval used for paleointensity determination on the Arai plot; B: paleointensity estimate for individual samples; B_m ±;
σ_m: mean paleointensity value for individual sites and its standard deviation; VADM_m ±; σ_m: virtual axial dipole moment for individual sites and its standard deviation.
^aA summary of paleointensity selection criteria is given in Table 1.