Citation:

PANGAEA.987448

Name: Inclination and declination data for the Early Pleistocene interval covered by Cores U1387C-8R to U1387C-19R of IODP Site 339-U1387, Gulf of Cadiz
Published: 2025-12-19
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Contourites; early Pleistocene; Gulf of Cadiz; IODP Site U1387; MOW

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Published: 2025-12-19 • DOI registered: 2025-12-19

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Keyword(s):

Contourites; early Pleistocene; Gulf of Cadiz; IODP Site U1387; MOW

Documentation:

Quality classification for the demagnetization results

Project(s):

Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)

Funding:

European Regional Development Fund (ERDF), grant/award no. POCI-01-0145-FEDER-022157: EMSO-PT infrastructure project

Fundação para a Ciência e Tecnologia (FCT), grant/award no. IF/01500/2014: Investigador FCT contract

Fundação para a Ciência e Tecnologia (FCT), grant/award no. UID/04326/2025

Fundação para a Ciência e Tecnologia (FCT), grant/award no. UID/PRR/04326/2025

National Science Foundation (NSF), grant/award no. OCE-1334163

National Science Foundation (NSF), grant/award no. OCE1450528 : A Proposal to Manage the U.S. Science Support Program Office associated with the International Ocean Discovery Program (USSSP-IODP)

Portuguese Science and Technology Foundation, grant/award no. LA/P/0101/2020: CCMAR LA

Portuguese Science and Technology Foundation, grant/award no. PTDC/MAR-PRO/3761/2012: MOWCADYN

Coverage:

Latitude: 36.805232 * Longitude: -7.718795

Minimum DEPTH, sediment/rock: 348.150 m * Maximum DEPTH, sediment/rock: 456.720 m

Event(s):

339-U1387C * Latitude: 36.805232 * Longitude: -7.718795 * Elevation: -558.4 m * Recovery: 409.5 m * Campaign: (Mediterranean Outflow) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 61 cores; 580 m cored; 71 % recovered; 870 m penetrated

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Acton, Gary D	DSDP/ODP/IODP sample designation
2	DEPTH, sediment/rock	Depth sed	m	Acton, Gary D	IODP Depth Scale Terminology	Geocode
3	Depth, composite	Depth comp	mcd	Acton, Gary D	IODP Depth Scale Terminology
4	Inclination	Incl	deg	Acton, Gary D		Inclination Free: The inclination estimated from principal component analysis (PCA) using the Free (FRE) option of PCA, where the line fit through the demagnetization data is constrained only by the data
5	Declination	Decl	deg	Acton, Gary D		Declination Free: The declination estimated from PCA using the FREE option
6	Maximum angular deviation	MAD	deg	Acton, Gary D		MAD Free: The maximum angular deviation (MAD) from PCA using the FREE option
7	Inclination	Incl	deg	Acton, Gary D		Inclination Anchored: The inclination estimated from principal component analysis (PCA) using the Anchored (ANC) option of PCA, where the line fit through the demagnetization data is anchored to the origin of orthogonal vector demagnetization plots
8	Declination	Decl	deg	Acton, Gary D		Declination Anchored: The declination estimated from PCA using the Anchored option
9	Maximum angular deviation	MAD	deg	Acton, Gary D		MAD Anchored: The maximum angular deviation (MAD) from PCA using the Anchored option
10	Quality flag	QF		Acton, Gary D		Quality: A quality classification for the demagnetization results for each sample, where quality varies from 1 (the best) through 5 (the worst). For details see Documentation "Quality classification for the demagnetization results"
11	Polarity	Polarity		Acton, Gary D		Polarity: Reversed (R), Normal (N), Transitional (T), Indeterminate (I)
12	Method comment	Method comm		Acton, Gary D		Option Used: The PCA fitting option preferred as giving the most representative result of the paleomagnetic direction of the sample (Free = FRE, Anchored = ANC)
13	Inclination	Incl	deg	Acton, Gary D		Inclination Preferred: The preferred inclination associated with the preferred "Option Used"
14	Comment	Comment		Acton, Gary D
15	Chronozone	Chronozone		Acton, Gary D		Polarity Chron Interpretation: The chronozone interpretation of polarity zones

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

911 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Sample label (DSDP/ODP/IODP sample designation)	2 Depth sed [m] (IODP Depth Scale Terminology)	3 Depth comp [mcd] (IODP Depth Scale Terminology)	4 Incl [deg] (Inclination Free: The inclina...)	5 Decl [deg] (Declination Free: The declina...)	6 MAD [deg] (MAD Free: The maximum angular...)	7 Incl [deg] (Inclination Anchored: The inc...)	8 Decl [deg] (Declination Anchored: The dec...)	9 MAD [deg] (MAD Anchored: The maximum ang...)	10 QF (Quality: A quality classifica...)	11 Polarity (Polarity: Reversed (R), Norma...)	12 Method comm (Option Used: The PCA fitting ...)	13 Incl [deg] (Inclination Preferred: The pr...)	14 Comment	15 Chronozone (Polarity Chron Interpretation...)
339-U1387C-8R-1,55	348.150	385.320	-25.30	20.30	7.89	-12.10	18.40	5.02	3	R	ANC	-12.1	Trending toward reverse polarity as sample demagnetized	Matuyama C1r.3r
339-U1387C-8R-2,75	349.860	387.030	-58.60	296.20	6.64	-51.40	274.90	5.52	2	R	FRE	-58.6		Matuyama C1r.3r
339-U1387C-8R-3,73	351.340	388.510	-38.50	91.60	16.43	8.80	100.70	12.91	4	R	FRE	-38.5	Trending toward reverse polarity as sample demagnetized	Matuyama C1r.3r
339-U1387C-8R-4,60	352.710	389.880	4.40	136.40	10.79	51.10	156.70	15.30	5	I	FRE		Trending toward reverse polarity as sample demagnetized	Matuyama C1r.3r
339-U1387C-8R-5,58	354.190	391.360	-39.50	38.40	5.18	-36.80	20.20	2.76	2	R	FRE	-39.5		Matuyama C1r.3r
339-U1387C-8R-6,100	356.110	393.280	-54.10	65.40	11.78	-60.10	68.40	6.93	2	R	ANC	-60.1		Matuyama C1r.3r
339-U1387C-9R-1,80	358.000	396.170	-55.70	134.10	5.77	-45.20	121.30	8.63	2	R	FRE	-55.7		Matuyama C1r.3r
339-U1387C-9R-2,79	359.490	397.660	-50.40	277.30	4.24	-47.90	280.30	1.86	1	R	FRE	-50.4		Matuyama C1r.3r
339-U1387C-9R-3,22	360.420	398.590	-52.90	246.40	2.05	-55.30	242.40	0.87	1	R	FRE	-52.9		Matuyama C1r.3r
339-U1387C-9R-4,66	362.360	400.530	-50.60	13.70	6.11	-37.80	13.70	2.76	2	R	FRE	-50.6		Matuyama C1r.3r
339-U1387C-9R-5,46	363.660	401.830	-30.40	153.20	7.28	-24.20	139.00	3.51	2	R	FRE	-30.4		Matuyama C1r.3r
339-U1387C-9R-6,46	364.870	403.040	-50.10	323.10	3.38	-50.50	340.50	0.64	1	R	FRE	-50.1		Matuyama C1r.3r
339-U1387C-10R-1,38	367.180	406.350	-21.60	2.90	28.46	-50.80	32.80	11.88	3	R	ANC	-50.8		Matuyama C1r.3r
339-U1387C-10R-1,75	367.550	406.720	-69.90	270.10	10.10	-38.80	301.60	2.93	3	R	FRE	-69.9		Matuyama C1r.3r
339-U1387C-10R-1,137	368.170	407.340	-36.60	106.90	34.60	-45.90	108.60	14.27	3	R	ANC	-45.9		Matuyama C1r.3r
339-U1387C-10R-2,25	368.550	407.720	-34.30	348.50	19.25	-23.30	9.30	12.41	3	R	ANC	-23.3		Matuyama C1r.3r
339-U1387C-10R-2,50	368.800	407.970	-15.20	258.50	13.80	-19.60	10.80	8.22	3	R	ANC	-19.6		Matuyama C1r.3r
339-U1387C-10R-2,65	368.950	408.120	52.00	264.80	9.26	-30.00	7.00	7.36	3	R	ANC	-30.0		Matuyama C1r.3r
339-U1387C-10R-2,75	369.050	408.220	19.60	51.70	6.46	18.00	45.40	3.30	2	E	FRE	19.6	Excursion? Not Gilsa, just anomalous	Matuyama C1r.3r
339-U1387C-10R-2,79	369.090	408.260	9.40	231.10	28.81	-44.90	15.70	2.98	3	R	ANC	-44.9		Matuyama C1r.3r
339-U1387C-10R-2,90	369.200	408.370	4.00	290.10	13.60	-32.70	355.00	3.23	3	R	ANC	-32.7		Matuyama C1r.3r
339-U1387C-10R-2,100	369.300	408.470	-55.20	185.50	1.67	-48.00	180.40	2.06	1	R	FRE	-55.2		Matuyama C1r.3r
339-U1387C-10R-2,120	369.500	408.670	-58.70	15.60	5.13	-59.40	359.80	2.77	1	R	ANC	-59.4		Matuyama C1r.3r
339-U1387C-10R-2,140	369.700	408.870	30.80	282.80	17.40	-39.00	138.70	4.64	3	R	ANC	-39.0		Matuyama C1r.3r
339-U1387C-10R-3,05	369.850	409.020	33.00	10.50	33.07	-60.70	156.10	5.35	3	R	ANC	-60.7		Matuyama C1r.3r
339-U1387C-10R-3,71	370.510	409.680	-46.40	303.60	4.07	-53.80	327.60	2.51	1	R	ANC	-53.8		Matuyama C1r.3r
339-U1387C-10R-3,100	370.800	409.970	-47.10	318.70	5.25	-48.50	306.40	3.66	1	R	ANC	-48.5		Matuyama C1r.3r
339-U1387C-10R-4,75	372.050	411.220	-36.90	10.00	4.47	-29.40	29.70	2.49	1	R	FRE	-36.9		Matuyama C1r.3r
339-U1387C-10R-5,75	373.550	412.720	-50.90	338.80	3.68	-49.90	343.00	2.23	1	R	FRE	-50.9		Matuyama C1r.3r
339-U1387C-10R-6,75	375.070	414.240	-60.90	302.30	7.25	-63.30	310.00	2.65	1	R	ANC	-63.3		Matuyama C1r.3r
339-U1387C-11R-1,93	377.330	417.500	-56.00	90.00	7.36	-41.60	94.90	10.66	2	R	FRE	-56.0		Matuyama C1r.3r
339-U1387C-11R-2,87	378.770	418.940	-49.70	231.90	3.55	-51.60	226.20	1.56	1	R	FRE	-49.7		Matuyama C1r.3r
339-U1387C-11R-3,87	380.270	420.440	-52.80	137.90	6.75	-53.10	136.40	5.55	2	R	FRE	-52.8		Matuyama C1r.3r
339-U1387C-11R-4,83	381.730	421.900	-54.80	173.70	4.89	-69.50	183.30	8.93	2	R	FRE	-54.8		Matuyama C1r.3r
339-U1387C-11R-5,88	383.280	423.450	-84.10	199.90	7.74	85.20	338.10	10.72	5	I	FRE		Anomalous overprint inclination	?
339-U1387C-11R-6,82	384.610	424.780	24.30	309.60	10.59	14.10	312.40	9.04	5	I	ANC		Trending toward reverse polarity as sample demagnetized	?
339-U1387C-12R-1,78	386.780	427.950	-49.50	229.30	6.76	-34.40	225.30	8.64	3	R	FRE	-49.5		Matuyama C1r.3r
339-U1387C-12R-2,78	388.280	429.450	-27.50	126.30	8.89	-22.00	124.40	9.42	4	R	ANC	-22.0		Matuyama C1r.3r
339-U1387C-12R-3,75	389.750	430.920	-36.90	219.80	11.67	-32.00	229.10	10.70	3	R	ANC	-32.0		Matuyama C1r.3r
339-U1387C-12R-4,73	391.230	432.400	-35.50	89.20	31.23	-36.50	108.00	35.48	5	I	FRE		Trending toward reverse polarity as sample demagnetized	Matuyama C1r.3r
339-U1387C-12R-5,74	392.740	433.910	-39.80	27.60	36.70	-18.00	194.20	17.85	4	R	ANC	-18.0		Matuyama C1r.3r
339-U1387C-12R-6,79	394.290	435.460	3.20	67.60	36.04	72.40	14.90	11.63	5	I	ANC		Very scattered normal polarity directions	?
339-U1387C-13R-1,81	396.410	438.580	-20.40	49.30	10.74	-16.10	25.50	6.84	3	R	ANC	-16.1		Matuyama C1r.3r
339-U1387C-13R-2,75	397.850	440.020	-57.80	94.90	7.15	-51.70	92.10	9.70	3	R	FRE	-57.8		Matuyama C1r.3r
339-U1387C-13R-3,75	399.350	441.520	-63.10	201.90	13.84	78.10	184.60	20.77	5	I	FRE			Matuyama C1r.3r
339-U1387C-13R-4,77	400.870	443.040	-20.50	140.20	8.51	-31.70	120.20	13.16	4	R	ANC	-31.7		Matuyama C1r.3r
339-U1387C-13R-5,89	402.490	444.660	-54.00	216.70	5.42	-57.50	222.20	3.20	2	R	FRE	-54.0		Matuyama C1r.3r
339-U1387C-13R-6,71	403.810	445.980	-59.40	133.80	5.74	-57.90	113.90	6.58	3	R	ANC	-57.9		Matuyama C1r.3r
339-U1387C-14R-1,81	406.010	449.180	-43.90	193.10	26.10	87.40	252.20	5.47	5	R	FRE			Matuyama C1r.3r
339-U1387C-14R-2,81	407.510	450.680	-5.30	343.20	25.67	17.10	41.70	18.76	5	I	FRE			Matuyama C1r.3r
339-U1387C-14R-3,81	409.010	452.180	-48.90	134.40	23.56	-26.30	86.30	6.04	4	R	ANC	-26.3		Matuyama C1r.3r
339-U1387C-15R-1,79	415.590	459.760	-3.80	263.10	14.28	3.60	68.30	4.09	5	T	ANC		Relatively low intensity consisent with being transitional	Transition?
339-U1387C-15R-2,72	417.020	461.190	8.60	302.00	28.37	38.70	152.10	14.07	5	T	FRE		Low intensity consisent with being transitional, but the very scatted inclinations are all positive, making it possible this is the uppermost Olduvai sample	Olduvai?
339-U1387C-15R-3,48	418.280	462.450	10.40	21.30	7.06	30.20	19.70	9.74	3	N	ANC	30.2		Olduvai
339-U1387C-15R-4,40	419.700	463.870	39.90	284.70	2.11	45.50	287.40	1.06	1	N	FRE	39.9		Olduvai
339-U1387C-15R-5,60	421.400	465.570	54.50	105.40	3.20	63.10	80.80	5.42	2	N	ANC	63.1		Olduvai
339-U1387C-16R-1,88	425.180	470.350	53.80	180.30	10.40	72.10	201.90	5.77	2	N	ANC	72.1		Olduvai
339-U1387C-16R-2,70	426.500	471.670	49.60	196.90	17.54	5.80	205.30	16.11	5	I	FRE			Olduvai
339-U1387C-16R-3,40	427.700	472.870	62.60	151.40	15.99	61.00	103.90	9.07	2	N	ANC	61.0		Olduvai
339-U1387C-16R-4,75	429.550	474.720	46.40	317.00	5.62	47.20	308.40	7.15	2	N	FRE	46.4		Olduvai
339-U1387C-17R-1,75	434.650	480.820	16.50	21.10	5.38	17.80	8.50	4.83	2	N	FRE	16.5		Olduvai
339-U1387C-18R-1,80	444.200	491.370	53.60	72.10	2.41	48.20	57.60	3.52	1	N	FRE	53.6		Olduvai
339-U1387C-18R-2,75	445.650	492.820	62.40	75.10	6.43	58.40	58.30	3.99	1	N	ANC	58.4		Olduvai
339-U1387C-18R-3,72	447.120	494.290	56.80	93.50	8.05	32.40	82.70	4.45	2	N	FRE	56.8		Olduvai
339-U1387C-18R-4,77	448.670	495.840	49.40	47.00	5.62	56.80	36.00	5.18	2	N	ANC	56.8		Olduvai
339-U1387C-18R-5,68	450.080	497.250	75.10	1.20	7.95	59.60	73.00	16.40	3	N	FRE	75.1		Olduvai
339-U1387C-18R-6,55	451.450	498.620	52.40	10.60	4.17	50.30	45.60	9.19	2	N	FRE	52.4	Anomalous overprint inclination	Olduvai
339-U1387C-19R-1,75	453.750	501.920	6.20	207.50	22.94	46.40	200.90	2.52	2	N	ANC	46.4	Anomalous overprint inclination	Olduvai
339-U1387C-19R-2,87	455.370	503.540	-8.50	254.80	17.66	30.40	219.60	10.88	3	N	ANC	30.4		Olduvai
339-U1387C-19R-3,72	456.720	504.890	40.80	296.90	27.00	41.30	85.60	23.57	4	N	ANC	41.3		Olduvai