Citation:

epic.28325.d001

Name: Geochemistry on sediment core CRP-1 (Table 1)
Published: 1998
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The CRP-1 core penetrated 148 m of Quaternary and lower Miocene glacigenic sediments. This material complements the Eocene trhough Miocene strata that was cored previously at CIROS-1, 70 km to the south. The paleoclimatic records of CRP-1 and CIROS-1 have been examined by calculating the Chemical Index of Alteration (CIA) of Nesbitt & Young (1982), using new data for CRP-1 materials and the data of Rose & Pyne (1988) for CIROS-1 mudstones. The CIA is calculated from the relative abundance of Al, K, Ca, and Na, and its magnitude increases as the effects of chemical weathering increase. However, changes in sediment provenance can also effect the CIA, and such changes appear to dominate some parts of the CRP-1 and CIROS-1 record.

Relatively large (47-60) and variable CIA values in the lithologically defined „lower sequence“ at CIROS-1 record the influence of chemical weathering during the late Eocene, a result of relatively mild climates and glacial influence, but not glacial dominance. CIA values do decrease upsection through the Eocene, however, suggesting gradual climatic deterioration. The Oligocene and Miocene „upper sequence“ at CIROS-1 is characterized by lower (45-50) and more uniform CIA values. This part of the record clearly is affected by an increased contribution of mafic material derived from the McMurdo Volcanic Group, but also may indicate a change in paleoweathering intensity. CIA values for CRP-1 are uniformly low (<45) and decrease slightly upsection, suggesting glacial dominance, although an increased influx of McMurdo Volcanic Group material is also indicated.

Project(s):

Cape Roberts Project (CRP)

Coverage:

Latitude: -77.007580 * Longitude: 163.755080

Date/Time Start: 1997-10-17T01:30:00 * Date/Time End: 1997-10-24T02:00:00

Minimum DEPTH, sediment/rock: 25.77 m * Maximum DEPTH, sediment/rock: 147.33 m

Event(s):

CRP-1 (16 km ENE Cape Roberts) * Latitude: -77.007580 * Longitude: 163.755080 * Date/Time Start: 1997-10-17T01:30:00 * Date/Time End: 1997-10-24T02:00:00 * Elevation: -153.5 m * Penetration: 132.06 m * Recovery: 113.32 m * Location: off Cape Roberts, Ross Sea, Antarctica * Campaign: * Basis: Sampling/drilling ice * Method/Device: Core wireline system (CWS) * Comment: sea ice thickness: 1.60 m, recovery 86 %. Age and lithology of oldest strata: 22-24 Ma; mudstone with scattered pebbles.

Comment:

for CIROS data (Tab. 2 from Roser & Pyne, 1989) see doi:10.1594/PANGAEA.54733

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Comment	Comment		Krissek, Lawrence A
3	Silicon dioxide	SiO2	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
4	Titanium dioxide	TiO2	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
5	Aluminium oxide	Al2O3	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
6	Iron oxide, Fe2O3	Fe2O3	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
7	Manganese oxide	MnO	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
8	Magnesium oxide	MgO	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
9	Calcium oxide	CaO	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
10	Sodium oxide	Na2O	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
11	Potassium oxide	K2O	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
12	Phosphorus pentoxide	P2O5	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
13	Loss on ignition	LOI	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
14	Sum	Sum	%	Krissek, Lawrence A	X-ray fluorescence (XRF)
15	Chemical index of alteration	CIA		Krissek, Lawrence A	CIA=[Al2O3/(Al2O3+CaO*+Na2O+K2O)]x100
16	Aluminium oxide/Titan dioxide	Al2O3/TiO2		Krissek, Lawrence A	Calculated
17	Vanadium	V	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
18	Chromium	Cr	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
19	Nickel	Ni	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
20	Copper	Cu	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
21	Zinc	Zn	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
22	Gallium	Ga	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
23	Arsenic	As	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
24	Rubidium	Rb	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
25	Strontium	Sr	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
26	Yttrium	Y	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
27	Zirconium	Zr	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
28	Niobium	Nb	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
29	Molybdenum	Mo	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
30	Barium	Ba	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
31	Lead	Pb	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
32	Thorium	Th	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)
33	Uranium	U	mg/kg	Krissek, Lawrence A	X-ray fluorescence (XRF)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

1957 data points

Data

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

1 Depth sed [m]	2 Comment	3 SiO2 [%]	4 TiO2 [%]	5 Al2O3 [%]	6 Fe2O3 [%]	7 MnO [%]	8 MgO [%]	9 CaO [%]	10 Na2O [%]	11 K2O [%]	12 P2O5 [%]	13 LOI [%]	14 Sum [%]	15 CIA	16 Al2O3/TiO2	17 V [mg/kg]	18 Cr [mg/kg]	19 Ni [mg/kg]	20 Cu [mg/kg]	21 Zn [mg/kg]	22 Ga [mg/kg]	23 As [mg/kg]	24 Rb [mg/kg]	25 Sr [mg/kg]	26 Y [mg/kg]	27 Zr [mg/kg]	28 Nb [mg/kg]	29 Mo [mg/kg]	30 Ba [mg/kg]	31 Pb [mg/kg]	32 Th [mg/kg]	33 U [mg/kg]
25.77	bulk	63.16	1.04	11.49	5.82	0.095	3.19	4.00	2.81	2.89	0.25	3.55	98.30	43.3	11.01		84	31	29	71				292		278			424	18
26.89	< 63 micron fraction	52.93	1.89	13.09	8.34	0.142	4.74	5.93	2.80	3.10	0.39	5.81	99.15	41.1	6.94		196	64	45	115				432		471			430	56
29.74	bulk	69.89	0.74	9.88	4.37	0.074	2.33	3.48	2.39	2.89	0.16	3.32	99.52	42.5	13.39	72	77		18	60	12	2	68	242	19	239	29	2	361	13	7	3
30.11	< 63 micron fraction	61.82	1.03	12.21	5.98	0.101	3.16	4.77	2.33	2.91	0.22	4.49	99.02	43.8	11.83		94	30	28	85				285		401			461	66
33.90	< 63 micron fraction	62.17	1.06	12.92	6.43	0.087	3.02	4.67	2.71	2.63	0.30	3.64	99.64	45.0	12.19		82	27	42	97				295		357			457	69
34.08	bulk	65.28	0.78	11.74	5.72	0.070	2.63	3.98	2.90	2.82	0.20	2.90	99.02	43.8	15.15		66	27	59	68				246		249			411	18
37.50	< 63 micron fraction	59.89	1.07	12.94	6.74	0.115	3.00	4.89	2.90	2.70	0.27	4.43	98.95	43.8	12.08		78	33	67	105				311		325			920	137
38.57	bulk	65.23	0.79	11.41	5.05	0.088	2.54	4.27	2.97	3.03	0.21	3.25	98.84	41.7	14.37	79	67	23	10	68	13	3	71	254	25	240	28	2	413	20	9	3
42.45	< 63 micron fraction	59.44	1.16	12.80	7.29	0.117	3.03	5.01	2.98	2.76	0.29	4.57	99.44	43.0	11.08		86	32	49	102				317		362			436	147
43.77	bulk	56.18	1.93	12.43	7.82	0.133	3.07	5.94	3.52	3.15	0.46	4.25	98.88	38.3	6.45	132	100	34	3	94	17	3	52	470	31	362	56	3	461	12	9	2
45.23	bulk	51.87	1.72	11.73	8.14	0.175	2.98	8.29	3.39	2.66	0.51	7.43	98.89	33.3	6.83	155	79	27	8	94	18	4	54	466	32	346	56	3	441	11	10	4
51.48	bulk	54.60	1.42	13.19	7.59	0.126	2.73	4.95	3.83	4.29	0.40	6.05	99.18	39.8	9.27		53	17	7	101				397		360			487	16
53.50	< 63 micron fraction	60.72	1.16	13.33	6.86	0.125	3.02	5.19	3.12	2.69	0.27	2.87	99.36	43.3	11.46		82	32	66	117				334		422			497	26
54.70	< 63 micron fraction	62.40	0.80	13.00	5.20	0.097	2.52	4.54	3.80	2.65	1.55	2.60	99.15	42.8	16.31		67	27	39	105				282		337			463	27
56.78	< 63 micron fraction	58.08	1.08	12.82	7.35	0.135	2.33	4.81	3.80	2.92	1.10	4.73	99.15	41.4	11.87		54	23	28	100				325		359			455	23
56.83	bulk	57.79	1.10	12.73	6.95	0.122	2.52	4.60	3.38	3.62	0.34	6.24	99.38	41.6	11.61	124	54	19	31	95	17	3	80	297	31	317	43	2	440	15	11	3
58.33	< 63 micron fraction	61.16	1.09	12.90	6.23	0.110	2.32	4.27	3.70	2.89	0.79	3.51	98.96	43.2	11.89		60	21	40	98				318		365			468	30
58.56	< 63 micron fraction	61.93	1.26	12.98	5.81	0.116	2.30	4.75	3.53	2.66	0.37	2.62	98.32	42.8	10.30		63	21	14	89				345		377			468	25
59.58	< 63 micron fraction	59.53	1.29	12.39	6.71	0.126	2.50	4.87	3.23	2.50	0.36	3.82	97.33	42.3	9.61		72	21	28	89				351		396			481	22
63.40	bulk	73.85	0.36	9.24	3.56	0.068	2.63	3.91	2.34	2.34	0.08	1.95	100.32	40.6	25.52	60	90	32	3	34	10	2	61	247	13	227	7	2	393	11	4	1
65.90	< 63 micron fraction	64.15	0.96	10.99	6.37	0.132	4.66	6.21	2.55	2.02	0.35	1.43	99.82	38.3	11.50		150	50	27	72				258		743			389	21
67.60	< 63 micron fraction	65.87	0.68	12.34	5.30	0.096	2.76	4.52	2.91	2.46	0.30	2.51	99.74	44.1	18.12		84	30	27	78				281		325			455	19
68.57	bulk	66.84	0.53	11.06	4.07	0.073	2.52	4.00	2.78	3.07	0.15	3.45	98.54	42.2	20.75	63	75	25	4	55	12	3	72	240	18	198	16	2	392	22	7	2
69.90	< 63 micron fraction	64.20	0.69	11.75	4.89	0.080	2.49	3.93	2.89	2.46	0.70	3.61	97.69	44.7	17.03		83	28	22	84				204		243			383	38
72.60	< 63 micron fraction	62.47	0.88	11.30	5.71	0.108	3.74	5.09	2.67	2.48	0.22	3.52	98.18	40.9	12.90		123	42	27	77				227		508			389	25
72.87	bulk	70.28	0.43	10.18	3.33	0.060	2.33	3.68	2.65	3.19	0.12	2.95	99.20	41.2	23.90		75	28	4	58				246		161			456	16
75.94	< 63 micron fraction	63.61	0.92	12.49	5.19	0.106	2.38	4.37	3.75	2.60	1.21	2.55	99.18	42.5	13.62		65	21	21	88				294		367			452	24
77.45	< 63 micron fraction	61.65	0.74	13.60	6.18	0.104	2.80	4.82	3.04	2.70	0.31	2.70	98.64	44.9	18.45		89	36	100	109				240		271			470	33
78.15	< 63 micron fraction	61.45	0.66	13.96	5.66	0.094	2.90	4.95	3.05	2.73	0.21	2.61	98.28	45.1	21.06		87	34	120	141				245		255			483	71
78.44	< 63 micron fraction	62.53	0.59	13.90	5.07	0.090	2.75	4.97	3.31	2.70	0.60	2.02	98.53	44.4	23.48		73	27	30	79				229		236			465	29
78.67	bulk	63.88	0.52	13.20	4.92	0.086	2.90	5.11	2.99	2.80	0.12	2.02	98.54	43.4	25.43	85	75	29	8	57	15	2	78	243	21	248	15	2	471	19	8	2
81.82	< 63 micron fraction	61.57	1.03	13.41	5.13	0.096	2.16	4.23	4.39	2.91	1.99	3.02	99.93	42.6	13.02		50	19	49	99				353		401			503	40
84.40	bulk	59.22	0.89	13.14	5.82	0.100	2.39	4.37	3.48	3.68	0.24	4.31	97.64	42.7	14.85	97	47	17	6	92	20	3	108	313	34	316	48	3	479	19	15	3
85.78	< 63 micron fraction	62.54	0.90	13.37	5.13	0.098	2.36	4.56	3.85	2.91	1.05	2.34	99.11	42.9	14.81		56	24	32	92				338		355			532	23
87.42	< 63 micron fraction	60.86	0.90	13.21	5.90	0.105	2.48	4.50	3.69	2.96	0.93	3.10	98.63	43.1	14.73		54	21	21	91				329		344			507	27
87.73	bulk	60.55	0.93	13.28	6.28	0.108	2.49	4.39	3.43	3.21	0.25	3.86	98.78	43.7	14.36	102	52	20	11	98	19	3	106	320	37	346	50	3	493	14	15	3
93.48	< 63 micron fraction	60.32	0.91	13.29	5.87	0.105	2.22	3.85	4.47	3.08	2.17	3.46	99.74	42.9	14.65	93	53	17	28	102	20	6	101	318	33	357	49	3	522	29	9	3
94.44	< 63 micron fraction	58.00	0.86	12.82	5.58	0.104	2.28	3.80	5.30	2.93	3.96	3.60	99.23	40.5	14.96	96	58	20	39	105	20	5	94	281	33	327	48	3	466	37	10	3
94.75	bulk	64.66	0.77	13.19	5.42	0.100	2.48	4.17	3.39	3.05	0.20	2.40	99.81	44.5	17.09	94	60	22	9	87	20	3	94	274	34	297	42	3	480	24	11	3
96.25	< 63 micron fraction	63.70	0.88	13.18	5.73	0.117	2.43	4.40	3.56	2.93	0.41	2.14	99.48	43.6	15.05		60	21	22	93				312		400			484	17
97.18	< 63 micron fraction	61.74	0.86	12.94	5.63	0.110	2.63	4.56	4.17	2.72	1.86	2.52	99.74	41.7	15.08		69	24	34	93				294		377			470	33
99.52	bulk	61.32	0.98	13.09	6.31	0.116	2.37	3.77	3.64	3.43	0.26	3.69	98.97	44.2	13.36	104	54	16	6	105	21	5	101	287	41	362	63	4	448	18	14	3
99.90	< 63 micron fraction	54.14	0.96	11.80	8.39	0.123	2.06	3.85	5.66	2.69	5.07	5.01	99.75	38.0	12.36	92	44	15	17	86	19	7	73	329	33	371	55	9	427	26	9	3
104.72	bulk	69.67	0.57	11.42	4.11	0.073	2.35	4.03	2.80	2.58	0.15	1.67	99.42	43.7	20.00	78	64	22	4	55	14	2	76	270	21	229	21	2	435	18	8	2
108.85	< 63 micron fraction	64.22	0.84	13.05	5.69	0.100	2.80	4.87	2.88	2.65	0.19	2.44	99.73	44.2	15.59		79	30	23	79				298		413			510	36
109.15	< 63 micron fraction	62.97	0.87	12.97	5.32	0.087	2.65	4.65	2.89	2.64	0.21			44.7	14.99		73	27	18	76				279		333			454	37
110.48	bulk	64.31	0.93	13.08	5.39	0.086	2.42	4.10	3.29	2.98	0.27	2.93	99.78	44.8	14.06	106	62	26	7	81	17	5	94	314	31	309	42	3	525	17	12	2
111.64	< 63 micron fraction	57.04	1.57	13.69	7.84	0.132	2.72	5.19	3.50	2.81	0.46	4.42	99.37	42.9	8.72	138	73	25	25	117	21	7	85	418	42	446	70	3	461	22	13	4
113.26	< 63 micron fraction	57.28	1.68	13.87	7.17	0.130	2.67	5.43	3.59	2.76	0.48	3.71	98.77	42.5	8.28	133	76	24	18	99	21	6	80	436	43	485	75	4	460	19	14	4
113.70	bulk	60.68	1.37	12.89	6.51	0.114	2.45	4.62	3.62	2.73	0.38	4.12	99.49	42.7	9.40	131	67	23	7	90	20	4	81	376	37	385	65	3	427	14	12	3
116.43	< 63 micron fraction	59.78	0.79	14.19	6.70	0.079	3.00	3.94	2.50	2.99	0.18	4.16	98.31	49.4	17.96	139	92	36	50	113	18	6	116	244	29	255	22	2	874	69	14	3
119.15	< 63 micron fraction	65.48	0.70	12.42	4.89	0.083	2.64	4.70	2.68	2.48	0.19	2.29	98.55	44.3	17.82	93	79	28	20	65	15	4	81	271	30	345	24	3	443	24	10	3
119.60	bulk	64.95	0.69	12.66	5.04	0.084	2.77	4.49	2.90	2.79	0.18	2.68	99.23	44.2	18.43	108	76	26	9	67	17	4	93	271	24	231	24	2	456	18	10	2
120.40	< 63 micron fraction	60.38	0.81	13.24	6.48	0.101	3.02	4.80	2.77	2.71	0.21	3.63	98.15	44.9	16.37		84	27	44	94				266		262			465	30
123.84	< 63 micron fraction	62.10	0.89	13.67	5.43	0.094	3.06	5.34	2.99	2.67	0.22	2.81	99.28	43.8	15.34	117	86	29	31	83	18	7	92	302	29	308	30	3	497	45	11	2
128.20	< 63 micron fraction	61.39	0.85	13.69	5.84	0.098	3.07	5.23	2.91	2.93	0.22	3.14	99.37	43.9	16.16	116	79	31	40	87	17	6	98	309	28	292	29	2	501	51	12	3
129.15	< 63 micron fraction	59.31	1.05	13.38	6.52	0.112	3.02	5.70	3.11	2.55	0.28	3.53	98.56	42.3	12.76		88	31	32	84				331		297			483	45
129.57	bulk	65.38	0.63	12.59	5.00	0.088	2.96	4.91	2.90	2.64	0.16	2.10	99.35	43.2	20.11	104	77	31	14	68	16	4	86	282	23	229	20	2	481	17	9	2
131.80	< 63 micron fraction	60.11	0.85	13.24	5.63	0.099	3.02	5.30	2.89	2.64	0.21	2.69	96.68	43.4	15.63		80	29	21	76				286		281			485	31
133.94	< 63 micron fraction	60.11	1.19	13.71	6.25	0.107	3.02	5.70	3.14	2.58	0.29	3.26	99.36	42.8	11.49	134	98	33	30	87	18	6	83	352	32	331	40	3	501	48	12	2
134.75	bulk	65.64	0.64	12.42	4.95	0.086	2.88	4.78	2.89	2.61	0.16	1.99	99.05	43.3	19.50	98	76	29	6	60	15	2	83	277	23	224	20	2	464	20	8	2
136.92	< 63 micron fraction	61.57	0.81	13.62	5.97	0.100	3.23	5.16	2.98	2.73	0.19	3.07	99.43	44.1	16.92		85	33	38	85				284		282			484	75
141.19	< 63 micron fraction	62.71	0.74	13.82	5.65	0.089	3.15	4.79	2.81	2.80	0.18	3.09	99.83	45.8	18.70	114	84	33	36	90	17	5	97	272	26	266	22	2	489	48	11	2
141.80	< 63 micron fraction	62.72	1.02	13.65	6.43	0.097	3.12	5.16	2.89	2.67	0.27	3.35	101.37	44.5	13.37	123	91	31	56	92	17	5	92	401	31	322	33	3	548	10	12	2
142.13	bulk	60.71	0.98	13.53	6.83	0.096	3.22	4.73	3.15	2.98	0.26	4.10	100.59	44.3	13.78		84	30	24	85				340		278			546	13
142.20	< 63 micron fraction	60.91	1.01	13.48	6.43	0.097	3.16	5.09	2.92	2.76	0.27	3.62	99.75	44.2	13.32	123	85	28	23	83	18	5	95	358	32	309	35	2	537	23	13	2
142.59	< 63 micron fraction	57.33	1.07	14.09	7.58	0.094	3.42	4.10	3.10	3.35	0.27	5.33	99.74	46.5	13.12		84	37	63	115				290		255			507	64
143.55	bulk	59.68	0.95	13.42	6.30	0.090	2.96	4.44	3.31	3.26	0.25	3.80	98.46	44.0	14.16	118	72	26	16	88	18	5	106	310	31	279	39	3	510	17	13	4
144.60	< 63 micron fraction	61.15	0.91	13.87	6.56	0.096	3.04	4.76	2.79	3.07	0.24			45.6	15.23		76	30	49	103				332		291			529	131
145.92	< 63 micron fraction	59.24	0.98	13.56	6.54	0.095	3.12	4.72	2.92	2.98	0.27	3.84	98.27	44.9	13.78	122	80	30	34	93	19	5	106	323	30	282	38	3	505	41	13	3
146.92	bulk	59.17	1.03	13.36	6.58	0.092	3.08	4.45	3.32	3.19	0.27	4.16	98.69	44.0	13.01	124	74	26	15	87	18	3	106	327	31	271	40	3	642	19	14	3
147.33	< 63 micron fraction	55.01	1.50	13.30	7.45	0.120	3.51	5.71	3.33	2.65	0.36	4.97	97.91	41.5	8.85		128	32	25	101				367		374			486	27