Paleointensity estimates from oceanic gabbros: Effects of hydrothermal alteration and cooling rate

Usui, Yoichi

doi:10.5047/eps.2013.03.015

Earth, Planets and Space

Table 1. Shaw experiment results.

From: Paleointensity estimates from oceanic gabbros: Effects of hydrothermal alteration and cooling rate

Sample	AF instrament	ChRM range (mT)	ChRM MAD	Dec.	Inc.	NRM-TRM fit range (mT)	NRM/TRM	R _TRM-NRM	ARM1/ARM2	R _ARM1–ARM2	B_anc(μT)
153-923A5R2W29-32	2G	50–100	1.8	195.1	−42.9	55–100	1.2555	0.9953	1.0103	0.9992	37.7
153-923A9R1W22-25	2G	45–100	5.1	95.4	−33.2	no fit
153-923A12R1W30-33	2G	no fit					very low
153-923A16R1W85-88	2G	no fit					very low
153-924C3R2W9-12	2G	30–100	9.7	64.2	31.9	no fit
153-924C5R1W23-26	2G	20–100	2.9	7.1	33.0	60–100	1.5491	0.9552	1.1278	0.9951
153-924C6R1W47-50	2G	25–100	10.3	246.4	35.3	25–100	0.3996	0.9293	0.9847	0.9997
153-923A4R1W56-58	2G + DEM95	50–150	3.0	128.6	−36.7	70–150	2.1168	0.9886	0.9221	0.9988
153-923A8R11W74-76	2G + DEM95	65–150	2.6	118.7	−37.5	75–150	1.4548	0.9958	0.9987	0.9998	43.6
153-923A12R1W86-88	2G + DEM95	no fit
153-923A13R1W72-74	2G + DEM95	20–150	2.0	54.1	−30.5	no fit
153-923A14R1W46-48	2G + DEM95	60–150	2.1	118.9	−43.0	60–150	1.6086	0.9986	1.0103	0.9992	48.3
153-921E5R3W40-42	DEM95	25–150	2.6	311.4	−50.1	40–150	1.0929	0.9859	0.8816	0.9919
153-921E7R4W33-36	DEM95	40–150	7.1	276.9	−51.4	60–150	0.8124	0.982	0.8072	0.9985
153-922A1R1W77-80	DEM95	8–150	4.0	87.2	8.5	no fit
153-922A3R1W75-78	DEM95	15–150	2.5	26.5	1.1	30–150	0.3548	0.9925	0.8923	0.9665
153-922B2R1W9-12	DEM95	15–150	4.3	262.8	39.6	no fit
153-923A9R1W22-25	DEM95	35–150	5.7	130.1	−39.4	65–150	0.3854	0.9943	0.8549	0.9973
304-1309D9R1W123-126	DEM95	no fit
304-1309D13R1W61-63	DEM95	10–150	16.0	202.6	−51.6	no fit
304-1309D17R2W34-37	DEM95	10–65	3.5	160.6	−29.8	no fit	0.658	0.9968	1.0172	0.9997
304-1309D22R2W10-12	DEM95	10–65	8.4	183.4	−10.4	no fit
304-1309D25R3W41-44	DEM95	25–150	5.3	211.2	−47.3	55–150	0.6867	0.9909	0.9404	0.9965
304-1309D50R3W44-47	DEM95	no fit
304-1309D51R4W71-74	DEM95	0–100	1.0	44.9	64.0	no fit	very low
304-1309D57R1W89-92	DEM95	25–150	2.9	217.0	−53.7	40–150	0.9248	0.9961	1.0105	0.9991	27.7
305-1309D108R1W32-35	DEM95	10–150	2.2	165.4	−36.3	80–150	0.8433	0.9879	0.9465	0.9987
304-1309D107R3W11-14	DEM95	20–150	3.8	230.4	−56.2	75–150	1.32	0.9951	0.9476	0.9934
305-1309D276R1W68-71	DEM95	40–150	1.9	139.9	−34.9	45–150	1.377	0.9991	1.0361	0.9991	41.3
304-1309D74R1W131-134	DEM95	15–150	2.9	146.2	−44.1	100–150	1.7898	0.9862	0.9189	0.9984

MAD: Maximum angular dispersion; Dec: Declination; Inc.: Inclination. Entries in italic represent values that failed to meet the selection criteria.

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