(Table 1) Major and trace elements of sediment core CRP-3
The CRP-3 core, drilled in western McMurdo Sound in October and November 1999, penetrated 823 m of lower Oligocene (to possibly upper Eocene) glacially influenced sediments. The palaeoclimatic record of CRP-3 is examined using major element analyses of bulk core samples of fine grained sediments (mu...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.484982 2023-05-15T17:10:36+02:00 (Table 1) Major and trace elements of sediment core CRP-3 Krissek, Lawrence A Kyle, Philip R LATITUDE: -77.006000 * LONGITUDE: 163.719000 * DATE/TIME START: 1999-10-09T00:00:00 * DATE/TIME END: 1999-11-19T00:00:00 * MINIMUM DEPTH, sediment/rock: 22.23 m * MAXIMUM DEPTH, sediment/rock: 788.87 m 2001-04-22 text/tab-separated-values, 2368 data points https://doi.pangaea.de/10.1594/PANGAEA.484982 https://doi.org/10.1594/PANGAEA.484982 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.484982 https://doi.org/10.1594/PANGAEA.484982 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Krissek, Lawrence A; Kyle, Philip R (2001): Geochemical indicators of weathering, Cenozoic palaeoclimates and provenance in fine-grained sediments from CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 561-568, hdl:10013/epic.28220.d001 Aluminium/Titanium ratio Aluminium oxide Arsenic Barium Calcium oxide Calculated Cape Roberts Project Chemical index of alteration Chloride Chromium Copper Core wireline system CRP CRP-3 CWS DEPTH sediment/rock Gallium Iron oxide Fe2O3 Lead Loss on ignition Magnesium oxide Manganese oxide Molybdenum Nickel Niobium Phosphorus oxide Potassium oxide Ross Sea Rubidium Sampling/drilling from ice Silicon dioxide Sodium oxide Strontium Sulfur total Thorium Titanium dioxide Uranium Vanadium X-ray fluorescence (XRF) Yttrium Zinc Zirconium Dataset 2001 ftpangaea https://doi.org/10.1594/PANGAEA.484982 2023-01-20T08:21:52Z The CRP-3 core, drilled in western McMurdo Sound in October and November 1999, penetrated 823 m of lower Oligocene (to possibly upper Eocene) glacially influenced sediments. The palaeoclimatic record of CRP-3 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, doi:10.1038/299715a0). The CIA is calculated from the molar abundances of Al, 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, so provenance changes have been evaluated by examining the Al2O3/TiO2 ratios and the Sr and Nb contents of the CRP-3 mudstones. Relatively low Nb contents (<20 ppm) and relatively high Al2O3/TiO2 ratios (generally >15) indicate that little or no McMurdo Volcanic Group detritus was incorporated in these sediments. Instead, these sediments appear to be mixtures of Beacon Supergroup, Ferrar Dolerite, and basement (Granite Harbour Intrusives) components; increased Sr contents suggest that the importance of basement-derived material is greatest above ~200 metres below seafloor (mbsf), whereas Beacon Supergroup and/or Ferrar Dolerite components dominate below that level. Below ~400 mbsf, the CIA profile is irregular and shows no correlation to the Al2O3/TiO2 record; as a result, the effects of weathering and provenance controls have not yet been interpreted for this part of the CIA profile. Above ~400 mbsf, however, four "cycles" of CIA increase/decrease (each spanning 50-100 m of stratigraphic thickness) are superimposed on a general decrease in CIA values upcore, and Al2O3/TiO2 ratios exhibit a matching pattern of "cycles". This correlation indicates that short-term provenance changes occurred during deposition of the upper half of CRP-3, and affected its CIA record. However, the Al2O3/TiO2 profile does not show any long-term trend above ~400 mbsf, so that the general decrease in CIA ... Dataset McMurdo Sound Ross Sea PANGAEA - Data Publisher for Earth & Environmental Science Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Granite Harbour ENVELOPE(162.733,162.733,-76.883,-76.883) McMurdo Sound Ross Sea ENVELOPE(163.719000,163.719000,-77.006000,-77.006000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Aluminium/Titanium ratio Aluminium oxide Arsenic Barium Calcium oxide Calculated Cape Roberts Project Chemical index of alteration Chloride Chromium Copper Core wireline system CRP CRP-3 CWS DEPTH sediment/rock Gallium Iron oxide Fe2O3 Lead Loss on ignition Magnesium oxide Manganese oxide Molybdenum Nickel Niobium Phosphorus oxide Potassium oxide Ross Sea Rubidium Sampling/drilling from ice Silicon dioxide Sodium oxide Strontium Sulfur total Thorium Titanium dioxide Uranium Vanadium X-ray fluorescence (XRF) Yttrium Zinc Zirconium |
spellingShingle |
Aluminium/Titanium ratio Aluminium oxide Arsenic Barium Calcium oxide Calculated Cape Roberts Project Chemical index of alteration Chloride Chromium Copper Core wireline system CRP CRP-3 CWS DEPTH sediment/rock Gallium Iron oxide Fe2O3 Lead Loss on ignition Magnesium oxide Manganese oxide Molybdenum Nickel Niobium Phosphorus oxide Potassium oxide Ross Sea Rubidium Sampling/drilling from ice Silicon dioxide Sodium oxide Strontium Sulfur total Thorium Titanium dioxide Uranium Vanadium X-ray fluorescence (XRF) Yttrium Zinc Zirconium Krissek, Lawrence A Kyle, Philip R (Table 1) Major and trace elements of sediment core CRP-3 |
topic_facet |
Aluminium/Titanium ratio Aluminium oxide Arsenic Barium Calcium oxide Calculated Cape Roberts Project Chemical index of alteration Chloride Chromium Copper Core wireline system CRP CRP-3 CWS DEPTH sediment/rock Gallium Iron oxide Fe2O3 Lead Loss on ignition Magnesium oxide Manganese oxide Molybdenum Nickel Niobium Phosphorus oxide Potassium oxide Ross Sea Rubidium Sampling/drilling from ice Silicon dioxide Sodium oxide Strontium Sulfur total Thorium Titanium dioxide Uranium Vanadium X-ray fluorescence (XRF) Yttrium Zinc Zirconium |
description |
The CRP-3 core, drilled in western McMurdo Sound in October and November 1999, penetrated 823 m of lower Oligocene (to possibly upper Eocene) glacially influenced sediments. The palaeoclimatic record of CRP-3 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, doi:10.1038/299715a0). The CIA is calculated from the molar abundances of Al, 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, so provenance changes have been evaluated by examining the Al2O3/TiO2 ratios and the Sr and Nb contents of the CRP-3 mudstones. Relatively low Nb contents (<20 ppm) and relatively high Al2O3/TiO2 ratios (generally >15) indicate that little or no McMurdo Volcanic Group detritus was incorporated in these sediments. Instead, these sediments appear to be mixtures of Beacon Supergroup, Ferrar Dolerite, and basement (Granite Harbour Intrusives) components; increased Sr contents suggest that the importance of basement-derived material is greatest above ~200 metres below seafloor (mbsf), whereas Beacon Supergroup and/or Ferrar Dolerite components dominate below that level. Below ~400 mbsf, the CIA profile is irregular and shows no correlation to the Al2O3/TiO2 record; as a result, the effects of weathering and provenance controls have not yet been interpreted for this part of the CIA profile. Above ~400 mbsf, however, four "cycles" of CIA increase/decrease (each spanning 50-100 m of stratigraphic thickness) are superimposed on a general decrease in CIA values upcore, and Al2O3/TiO2 ratios exhibit a matching pattern of "cycles". This correlation indicates that short-term provenance changes occurred during deposition of the upper half of CRP-3, and affected its CIA record. However, the Al2O3/TiO2 profile does not show any long-term trend above ~400 mbsf, so that the general decrease in CIA ... |
format |
Dataset |
author |
Krissek, Lawrence A Kyle, Philip R |
author_facet |
Krissek, Lawrence A Kyle, Philip R |
author_sort |
Krissek, Lawrence A |
title |
(Table 1) Major and trace elements of sediment core CRP-3 |
title_short |
(Table 1) Major and trace elements of sediment core CRP-3 |
title_full |
(Table 1) Major and trace elements of sediment core CRP-3 |
title_fullStr |
(Table 1) Major and trace elements of sediment core CRP-3 |
title_full_unstemmed |
(Table 1) Major and trace elements of sediment core CRP-3 |
title_sort |
(table 1) major and trace elements of sediment core crp-3 |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.484982 https://doi.org/10.1594/PANGAEA.484982 |
op_coverage |
LATITUDE: -77.006000 * LONGITUDE: 163.719000 * DATE/TIME START: 1999-10-09T00:00:00 * DATE/TIME END: 1999-11-19T00:00:00 * MINIMUM DEPTH, sediment/rock: 22.23 m * MAXIMUM DEPTH, sediment/rock: 788.87 m |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(162.733,162.733,-76.883,-76.883) ENVELOPE(163.719000,163.719000,-77.006000,-77.006000) |
geographic |
Cape Roberts Granite Harbour McMurdo Sound Ross Sea |
geographic_facet |
Cape Roberts Granite Harbour McMurdo Sound Ross Sea |
genre |
McMurdo Sound Ross Sea |
genre_facet |
McMurdo Sound Ross Sea |
op_source |
Supplement to: Krissek, Lawrence A; Kyle, Philip R (2001): Geochemical indicators of weathering, Cenozoic palaeoclimates and provenance in fine-grained sediments from CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 561-568, hdl:10013/epic.28220.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.484982 https://doi.org/10.1594/PANGAEA.484982 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.484982 |
_version_ |
1766067241425567744 |