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Krissek, Lawrence A; Kyle, Philip R (2000): Element abundances, loss on ignition, total analyzed abundances, CIA values, and Al-oxide/Ti-oxide ratios of sediment core CRP-2A (Table1). PANGAEA, https://doi.org/10.1594/PANGAEA.144432, Supplement to: Krissek, LA; Kyle, PR (2000): Geochemical indicators of weathering, Cenozoic palaeoclimates, and provenance from fine-grained sediments in CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 589-597, hdl:10013/epic.28250.d001

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Abstract:
The CRP-2/2A core, drilled in western McMurdo Sound in October and November 1998, penetrated 624 m of Quaternary. Pliocene, lower Miocene, and Oligocene glacigenic sediments. The palaeoclimatic record of CRP-2/2A is examined using major element analyses of bulk core samples of fine grained sediments (mudstones and siltstones) and the Chemical Index of Alteration (CIA) of Nesbitt & Young (1982). The CIA is calculated from the relative abundances of AI, K, Ca, and Na oxides, and its magnitude increases as the effects of chemical weathering increase. However, changes in sediment provenance can also affect the CIA, and provenance changes are recorded by shifts in the Al2O3/TiO2 ratios and the Nb contents of these CRP-2/2A mudstones. Relatively low CIA values (40-50) occur throughout the CRP-2/2A sequence, whereas the Al2O3/TiO2 ratio decreases upsection. The major provenance change is an abrupt onset of McMurdo Volcanic Group detritus at ~300 mbsf and is best characterized by a rapid increase in Nb content in the sediments. This provenance shift is not evident in the CIA record, suggesting that a contribution from the Ferrar Dolerite to the older sediments was replaced by an input of McMurdo Volcanic Group material in the younger sediments. If this is true, then the relatively uniform CIA values indicate relatively consistent palaeoweathering intensities throughout the Oligocene and early Miocene in the areas that supplied sediment to CRP-2/2A.
Project(s):
Coverage:
Latitude: -77.005980 * Longitude: 163.719450
Date/Time Start: 1998-10-16T07:30:00 * Date/Time End: 1998-11-25T14:20:00
Minimum DEPTH, sediment/rock: 17.33 m * Maximum DEPTH, sediment/rock: 623.84 m
Event(s):
CRP-2A (14.2 km at 096° true from Cape Roberts) * Latitude: -77.005980 * Longitude: 163.719450 * Date/Time Start: 1998-10-16T07:30:00 * Date/Time End: 1998-11-25T14:20:00 * Elevation: -177.9 m * Recovery: 624 m * Location: off Cape Roberts, Ross Sea, Antarctica * Campaign: CRP-2 * Basis: Sampling/drilling from ice * Device: Core wireline system (CWS) * Comment: 921 m at 284° from CRP-1. Sea-ice thickness: 2.0 m (1 Oct) to 2.2 m (23 Nov). Sea riser embedded to 13.03 mbsf. Lateral ice movement: 9.87 m to east from 17 Oct to 23 Nov. HQ core to 199.31 mbsf. NQ core to 624.15 mbsf. 13.03 to 45.97 mbsf, 11.29 m (34%) partially following CRP-2. 45.07 to 624.15 mbsf, 548.67 m (95%) new hole. Deepest core-lithology: hard sandy siltstone. Deepest core-age: earliest Oligocene (ca. 33 Ma on diatoms, nannofossils and dinoflagellates)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2Silicon dioxideSiO2%Krissek, Lawrence AX-ray fluorescence (XRF)
3Titanium dioxideTiO2%Krissek, Lawrence AX-ray fluorescence (XRF)
4Aluminium oxideAl2O3%Krissek, Lawrence AX-ray fluorescence (XRF)
5Iron oxide, Fe2O3Fe2O3%Krissek, Lawrence AX-ray fluorescence (XRF)
6Manganese oxideMnO%Krissek, Lawrence AX-ray fluorescence (XRF)
7Magnesium oxideMgO%Krissek, Lawrence AX-ray fluorescence (XRF)
8Calcium oxideCaO%Krissek, Lawrence AX-ray fluorescence (XRF)
9Sodium oxideNa2O%Krissek, Lawrence AX-ray fluorescence (XRF)
10Potassium oxideK2O%Krissek, Lawrence AX-ray fluorescence (XRF)
11Phosphorus oxideP2O5%Krissek, Lawrence AX-ray fluorescence (XRF)
12Loss on ignitionLOI%Krissek, Lawrence ACalculated from weight loss after ignition at 450 °C
13SumSum%Krissek, Lawrence ACalculated
14Chemical index of alterationCIAKrissek, Lawrence Asee comment(Al2O3/(Al2O3+CaO+Na2O+K2O)) x 100
15Aluminium/Titanium ratioAl/TiKrissek, Lawrence AX-ray fluorescence (XRF)
16Sulfur, totalSmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
17ChlorideCl-mmol/lKrissek, Lawrence AX-ray fluorescence (XRF)
18ScandiumScmg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
19VanadiumVmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
20ChromiumCrmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
21NickelNimg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
22CopperCumg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
23ZincZnmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
24GalliumGamg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
25ArsenicAsmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
26ArsenicAsmg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
27RubidiumRbmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
28StrontiumSrmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
29YttriumYmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
30ZirconiumZrmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
31NiobiumNbmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
32AntimonySbmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
33CaesiumCsmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
34BariumBamg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
35LanthanumLamg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
36CeriumCemg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
37SamariumSmmg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
38EuropiumEumg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
39TerbiumTbmg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
40YtterbiumYbmg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
41LutetiumLumg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
42HafniumHfmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
43TantalumTamg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
44LeadPbmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
45ThoriumThmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
46ThoriumThmg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
47UraniumUmg/kgKrissek, Lawrence AX-ray fluorescence (XRF)
48UraniumUmg/kgKrissek, Lawrence AInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)
Size:
4188 data points

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