Citation:

epic.28349.d001

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

Abstract:

The mineralogy of the lower Miocene and Quaternary sediments of the drillcore CRP-1 (McMurdo Sound, Ross Sea, Antarctica) has been analysed using the X-ray diffraction method. Quartz, plagioclase feldspars, K-feldspars are the most important non-clay minerals. Amphiboles occur throughout the core in minor amounts. The composition of the sediments points to an origin in the Transantarctic Mountains for the majority of the detrital components. There, the plutonic and metamorphic rocks of the basement, the sediments of the Beacon Supergroup and the volcanic rocks of the Ferrar Dolerite could serve as possible source lithologies. The quartz abundance is strongly linked to the gain size of the sediments with maxima correlating with coarse gain sizes. The downcore distribution of the other detrital minerals is relatively invariable, and does not indicate a major change in the source area during the time represented by the CRP-1 sediments. Some diagenetic alteration of the sediments is indicated by the occurrence of minor amounts of opal-CT and by some clinoptilolite below110 m depth.

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: 19.43 m * Maximum DEPTH, sediment/rock: 146.51 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.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Sand	Sand	%	Ehrmann, Werner	Grain size, sieving/settling tube
3	Quartz/standard ratio	Qz/std		Ehrmann, Werner	X-ray diffraction (XRD)
4	Feldspar/standard ratio	Fsp/std		Ehrmann, Werner	X-ray diffraction (XRD)
5	Kalifeldspar/standard ratio	Kfs/std		Ehrmann, Werner	X-ray diffraction (XRD)
6	Plagioclase/standard ratio	Pl/std		Ehrmann, Werner	X-ray diffraction (XRD)
7	Kalifeldspar/Plagioclase ratio	Kfs/Pl		Ehrmann, Werner	X-ray diffraction (XRD)
8	Quartz/Feldspar ratio	Qz/Fsp		Ehrmann, Werner	X-ray diffraction (XRD)
9	Pyroxene/standard ratio	Pyrox/std		Ehrmann, Werner	X-ray diffraction (XRD)
10	Amphibole/standard ratio	Amp/std		Ehrmann, Werner	X-ray diffraction (XRD)
11	Zeolite/standard ratio	Zeo/std		Ehrmann, Werner	X-ray diffraction (XRD)
12	Opal-CT/standard ratio	Opal-CT/std		Ehrmann, Werner	X-ray diffraction (XRD)

License:

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

Size:

536 data points

Data

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

1 Depth sed [m]	2 Sand [%]	3 Qz/std	4 Fsp/std	5 Kfs/std	6 Pl/std	7 Kfs/Pl	8 Qz/Fsp	9 Pyrox/std	10 Amp/std	11 Zeo/std	12 Opal-CT/std
19.43	44.3	10.44	3.90	1.21	2.13	0.57	1.99	1.19	0.089	0.000	0.000
20.64	52.6	8.49	5.10	1.82	2.24	0.81	1.49	1.79	0.044	0.006	0.060
24.85	64.7	13.13	5.06	2.11	2.38	0.89	1.89	1.19	0.088	0.000	0.089
26.81	79.9	8.59	3.98	1.31	2.22	0.59	1.60		0.075	0.000	0.029
30.37	56.0	8.89	8.37	1.30	8.72	0.15	0.94	1.34	0.061	0.000	0.032
32.23	67.0	6.33	3.49	0.99	2.02	0.49	1.52		0.121	0.000	0.021
32.54	48.3	1.41	1.10	0.32	0.35	0.91	1.16		0.019	0.000	0.011
34.17	34.6	8.49	4.00	1.43	2.29	0.62	1.80	1.33	0.029	0.007	0.049
35.54	41.7	7.40	3.93	1.34	1.70	0.79	1.59	1.61	0.049	0.003	0.041
38.48	48.4	10.31	6.44	2.50	2.99	0.84	1.54	1.85	0.082	0.015	0.028
40.40	44.4	10.04	6.59	2.06	4.36	0.47	1.13	1.92	0.070	0.010	0.042
42.53	42.9	8.42	3.87	1.13	2.20	0.51	1.81	1.45	0.066	0.000	0.044
44.48	36.7	3.23	5.19	1.47	1.71	0.86	0.60	2.16	0.019	0.000	0.118
45.61	26.4	3.42	5.02	2.05	1.59	1.29	0.62	1.84	0.047	0.000	0.126
46.41	27.5	4.22	4.26	1.53	1.64	0.94	0.92	1.90	0.060	0.007	0.158
47.59	9.4	4.57	4.82	1.90	1.86	1.02	0.73	1.79	0.072	0.008	0.123
48.95	3.6	2.90	4.67	1.78	1.65	1.08	0.62	1.62	0.068	0.008	0.122
51.78	9.5	3.48	4.76	1.63	1.55	1.05	0.81	1.71	0.137	0.000	0.161
53.10	18.8	4.89	5.66	1.98	1.98	1.00	0.84	1.95	0.082	0.004	0.109
56.11	44.7	4.89	4.99	2.46	1.70	1.45	0.87	1.62	0.115	0.003	0.100
58.10	12.6	5.22	4.96	2.03	1.79	1.14	0.94	1.71	0.055	0.005	0.142
58.97	23.3	6.14	5.68	2.26	2.37	0.95	1.02	1.67	0.078	0.000	0.105
59.63	51.0	5.32	5.48	1.63	2.23	0.73	0.90	1.43	0.028	0.031	0.101
60.89	95.9	13.45	4.37	1.77	2.55	0.70	2.29	1.37	0.095	0.000	0.000
62.70	76.8	14.08	5.43	2.27	2.90	0.78	1.97	1.60	0.042	0.000	0.041
63.25	94.5	12.79	6.60	3.87	3.11	1.24	1.60	1.80	0.062	0.000	0.000
66.09	60.7	9.27	5.52	2.06	2.92	0.71	1.35	1.15	0.076	0.000	0.000
68.45	66.4	11.54	7.09	2.32	4.64	0.50	1.33	1.77	0.064	0.000	0.007
70.68	63.1	10.31	2.32	0.99	0.81	1.22	3.83	1.47	0.023	0.003	0.016
75.74	13.1	5.21	5.52	2.31	2.55	0.91	0.82	1.94	0.083	0.006	0.078
79.04	50.3	8.31	3.89	1.65	1.71	0.96	1.81	1.33	0.032	0.002	0.069
85.50	4.4	4.95	6.03	2.82	2.80	1.01	0.67	1.63	0.129	0.003	0.109
91.24	90.9	8.59	5.27	2.66	2.58	1.03	2.05	1.13	0.014	0.000	0.028
94.65	20.3	6.01	6.09	1.71	3.37	0.51	0.97	1.80	0.107	0.002	0.084
96.57	23.5	6.58	4.86	1.99	2.20	0.90	1.13	1.59	0.074	0.006	0.108
100.29	7.4	3.72	5.64	1.88	1.71	1.10	0.56	1.54	0.084	0.000	0.200
104.36	60.1	8.43	4.27	1.26	2.22	0.57	1.58	1.71	0.028	0.003	0.090
108.67	59.2	8.29	3.79	0.96	1.79	0.53	1.89	1.50	0.046	0.000	0.035
113.67	29.2	4.52	7.45	5.33	1.93	2.77	0.58	1.44	0.034	0.093	0.110
117.88	69.3	8.37	4.86	1.50	4.15	0.36	1.36	1.07	0.116	0.002	0.026
122.80	33.8	5.62	4.30	1.25	2.44	0.51	1.07	1.79	0.059	0.021	0.042
125.70	64.0	8.12	4.33	1.29	2.45	0.53	1.46	1.45	0.086	0.000	0.020
130.65	44.7	6.47	3.60	1.14	1.77	0.64	1.58	1.91	0.055	0.008	0.036
131.66	45.4	7.24	4.35	0.82	2.74	0.30	1.30	1.75	0.075	0.002	0.036
133.47	36.3	7.90	6.38	1.65	4.40	0.37	1.08	1.44	0.121	0.039	0.028
137.73	40.0	6.19	4.87	1.33	2.63	0.50	1.09	1.59	0.195	0.000	0.000
139.76	52.9	8.06	4.47	1.60	2.29	0.70	1.57	1.84	0.080	0.003	0.000
142.33	6.2	5.55	3.67	1.25	1.56	0.80	1.42	1.57	0.055	0.006	0.067
146.51	10.7	4.66	3.89	1.49	1.68	0.89	1.11	1.50	0.072	0.005	0.057