Geochemistry on sediment core CRP-1 (Table 1)
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 In...
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1998
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.54732 2023-05-15T14:04:42+02:00 Geochemistry on sediment core CRP-1 (Table 1) Krissek, Lawrence A Kyle, Philip R 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 1998-01-15 text/tab-separated-values, 1957 data points https://doi.pangaea.de/10.1594/PANGAEA.54732 https://doi.org/10.1594/PANGAEA.54732 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.54732 https://doi.org/10.1594/PANGAEA.54732 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 (1998): Geochemical indicators of weathering and Cenozoic palaeoclimates in sediments from CRP-1 and CIROS-1, McMurdo Sound, Antarctica. Terra Antartica, 5(3), 673-680, hdl:10013/epic.28325.d001 16 km ENE Cape Roberts Aluminium oxide Aluminium oxide/Titan dioxide Arsenic Barium Calcium oxide Calculated Cape Roberts Project Chemical index of alteration Chromium CIA=[Al2O3/(Al2O3+CaO*+Na2O+K2O)]x100 Comment Copper Core wireline system CRP CRP-1 CWS DEPTH sediment/rock Gallium Iron oxide Fe2O3 Lead Loss on ignition Magnesium oxide Manganese oxide Molybdenum Nickel Niobium off Cape Roberts Ross Sea Antarctica Phosphorus oxide Potassium oxide Rubidium Sampling/drilling ice Silicon dioxide Sodium oxide Strontium Sum Thorium Titanium dioxide Uranium Vanadium X-ray fluorescence (XRF) Yttrium Zinc Zirconium Dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.54732 2023-01-20T07:35:43Z 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. Dataset Antarc* Antarctica Ross Sea PANGAEA - Data Publisher for Earth & Environmental Science Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Ross Sea Titan ENVELOPE(-68.733,-68.733,-72.083,-72.083) ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
16 km ENE Cape Roberts Aluminium oxide Aluminium oxide/Titan dioxide Arsenic Barium Calcium oxide Calculated Cape Roberts Project Chemical index of alteration Chromium CIA=[Al2O3/(Al2O3+CaO*+Na2O+K2O)]x100 Comment Copper Core wireline system CRP CRP-1 CWS DEPTH sediment/rock Gallium Iron oxide Fe2O3 Lead Loss on ignition Magnesium oxide Manganese oxide Molybdenum Nickel Niobium off Cape Roberts Ross Sea Antarctica Phosphorus oxide Potassium oxide Rubidium Sampling/drilling ice Silicon dioxide Sodium oxide Strontium Sum Thorium Titanium dioxide Uranium Vanadium X-ray fluorescence (XRF) Yttrium Zinc Zirconium |
spellingShingle |
16 km ENE Cape Roberts Aluminium oxide Aluminium oxide/Titan dioxide Arsenic Barium Calcium oxide Calculated Cape Roberts Project Chemical index of alteration Chromium CIA=[Al2O3/(Al2O3+CaO*+Na2O+K2O)]x100 Comment Copper Core wireline system CRP CRP-1 CWS DEPTH sediment/rock Gallium Iron oxide Fe2O3 Lead Loss on ignition Magnesium oxide Manganese oxide Molybdenum Nickel Niobium off Cape Roberts Ross Sea Antarctica Phosphorus oxide Potassium oxide Rubidium Sampling/drilling ice Silicon dioxide Sodium oxide Strontium Sum Thorium Titanium dioxide Uranium Vanadium X-ray fluorescence (XRF) Yttrium Zinc Zirconium Krissek, Lawrence A Kyle, Philip R Geochemistry on sediment core CRP-1 (Table 1) |
topic_facet |
16 km ENE Cape Roberts Aluminium oxide Aluminium oxide/Titan dioxide Arsenic Barium Calcium oxide Calculated Cape Roberts Project Chemical index of alteration Chromium CIA=[Al2O3/(Al2O3+CaO*+Na2O+K2O)]x100 Comment Copper Core wireline system CRP CRP-1 CWS DEPTH sediment/rock Gallium Iron oxide Fe2O3 Lead Loss on ignition Magnesium oxide Manganese oxide Molybdenum Nickel Niobium off Cape Roberts Ross Sea Antarctica Phosphorus oxide Potassium oxide Rubidium Sampling/drilling ice Silicon dioxide Sodium oxide Strontium Sum Thorium Titanium dioxide Uranium Vanadium X-ray fluorescence (XRF) Yttrium Zinc Zirconium |
description |
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. |
format |
Dataset |
author |
Krissek, Lawrence A Kyle, Philip R |
author_facet |
Krissek, Lawrence A Kyle, Philip R |
author_sort |
Krissek, Lawrence A |
title |
Geochemistry on sediment core CRP-1 (Table 1) |
title_short |
Geochemistry on sediment core CRP-1 (Table 1) |
title_full |
Geochemistry on sediment core CRP-1 (Table 1) |
title_fullStr |
Geochemistry on sediment core CRP-1 (Table 1) |
title_full_unstemmed |
Geochemistry on sediment core CRP-1 (Table 1) |
title_sort |
geochemistry on sediment core crp-1 (table 1) |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.54732 https://doi.org/10.1594/PANGAEA.54732 |
op_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 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(-68.733,-68.733,-72.083,-72.083) ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
geographic |
Cape Roberts Ross Sea Titan |
geographic_facet |
Cape Roberts Ross Sea Titan |
genre |
Antarc* Antarctica Ross Sea |
genre_facet |
Antarc* Antarctica Ross Sea |
op_source |
Supplement to: Krissek, Lawrence A; Kyle, Philip R (1998): Geochemical indicators of weathering and Cenozoic palaeoclimates in sediments from CRP-1 and CIROS-1, McMurdo Sound, Antarctica. Terra Antartica, 5(3), 673-680, hdl:10013/epic.28325.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.54732 https://doi.org/10.1594/PANGAEA.54732 |
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.54732 |
_version_ |
1766275939721805824 |