Clay mineral distribution in sediment core AND-2A
Clay mineral assemblages in sediments from ANDRILL drill core AND-2A were used to reconstruct the Neogene palaeoenvironment. For the first time a clay mineral data set can be presented for southern McMurdo Sound, Ross Sea, Antarctica, that covers an expanded and fairly continuous Lower and Middle Mi...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.729023 2023-05-15T13:41:32+02:00 Clay mineral distribution in sediment core AND-2A Franke, Daniel Ehrmann, Werner LATITUDE: -77.758141 * LONGITUDE: 165.276765 * DATE/TIME START: 2007-10-10T12:00:00 * DATE/TIME END: 2007-11-30T12:00:00 * MINIMUM DEPTH, sediment/rock: 21.40 m * MAXIMUM DEPTH, sediment/rock: 1004.88 m 2009-11-09 text/tab-separated-values, 1434 data points https://doi.pangaea.de/10.1594/PANGAEA.729023 https://doi.org/10.1594/PANGAEA.729023 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.729023 https://doi.org/10.1594/PANGAEA.729023 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Franke, Daniel; Ehrmann, Werner (2010): Neogene clay mineral assemblages in the AND-2A drill core (McMurdo Sound, Antarctica) and their implications for environmental change. Palaeogeography, Palaeoclimatology, Palaeoecology, 286, 55-65, https://doi.org/10.1016/j.palaeo.2009.12.003 AND-2A ANDRILL Antarctic Geological Drilling Chlorite DEPTH sediment/rock DRILL Drilling/drill rig Illite Illite 5Å/10Å Esquevin-index Illite crystallinity Kaolinite McMurdo Sound McMurdo Station Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Quartz/Clay ratio Smectite Smectite crystallinity SMS Southern McMurdo Sound SPP1158 X-ray diffraction TEXTUR clay fraction Zeolite Dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.729023 https://doi.org/10.1016/j.palaeo.2009.12.003 2023-01-20T08:49:29Z Clay mineral assemblages in sediments from ANDRILL drill core AND-2A were used to reconstruct the Neogene palaeoenvironment. For the first time a clay mineral data set can be presented for southern McMurdo Sound, Ross Sea, Antarctica, that covers an expanded and fairly continuous Lower and Middle Miocene section. Although the occurrence of some authigenic smectites, zeolites and opal-CT documents diagenetic processes, the clay mineral assemblages allow a subdivision of the core into three intervals that reflect changes in provenance and volcanic activity. Interval I (1000–440 mbsf, 20.0–16.5 Ma) is characterised by a dominant sediment source in the Transantarctic Mountains. Frequent and short-term changes in the illite and smectite concentrations were caused by the influx of volcanic sediment components from southern McMurdo Sound and by diagenesis. Interval II (440–225 mbsf, 16.5–15.0 Ma) has much more uniform illite and smectite contents. The assemblage is derived from the Transantarctic Mountains. Interval III (225–0 mbsf, 15.0–0 Ma, containing major hiatuses) shows a distinctly enhanced volcanic influence and sediment components that come from the south of McMurdo Sound. The AND-2A clay mineral assemblages indicate persistent physical weathering conditions and do not mirror the Mid-Miocene Climatic Optimum. They indicate that the climatic changes were probably not strong enough to cause a modification in the weathering regime on the Antarctic continent. Dataset Antarc* Antarctic Antarctica Arctic McMurdo Sound Ross Sea Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Arctic McMurdo Sound McMurdo Station ENVELOPE(166.667,166.667,-77.850,-77.850) Ross Sea The Antarctic Transantarctic Mountains ENVELOPE(165.276765,165.276765,-77.758141,-77.758141) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AND-2A ANDRILL Antarctic Geological Drilling Chlorite DEPTH sediment/rock DRILL Drilling/drill rig Illite Illite 5Å/10Å Esquevin-index Illite crystallinity Kaolinite McMurdo Sound McMurdo Station Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Quartz/Clay ratio Smectite Smectite crystallinity SMS Southern McMurdo Sound SPP1158 X-ray diffraction TEXTUR clay fraction Zeolite |
spellingShingle |
AND-2A ANDRILL Antarctic Geological Drilling Chlorite DEPTH sediment/rock DRILL Drilling/drill rig Illite Illite 5Å/10Å Esquevin-index Illite crystallinity Kaolinite McMurdo Sound McMurdo Station Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Quartz/Clay ratio Smectite Smectite crystallinity SMS Southern McMurdo Sound SPP1158 X-ray diffraction TEXTUR clay fraction Zeolite Franke, Daniel Ehrmann, Werner Clay mineral distribution in sediment core AND-2A |
topic_facet |
AND-2A ANDRILL Antarctic Geological Drilling Chlorite DEPTH sediment/rock DRILL Drilling/drill rig Illite Illite 5Å/10Å Esquevin-index Illite crystallinity Kaolinite McMurdo Sound McMurdo Station Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Quartz/Clay ratio Smectite Smectite crystallinity SMS Southern McMurdo Sound SPP1158 X-ray diffraction TEXTUR clay fraction Zeolite |
description |
Clay mineral assemblages in sediments from ANDRILL drill core AND-2A were used to reconstruct the Neogene palaeoenvironment. For the first time a clay mineral data set can be presented for southern McMurdo Sound, Ross Sea, Antarctica, that covers an expanded and fairly continuous Lower and Middle Miocene section. Although the occurrence of some authigenic smectites, zeolites and opal-CT documents diagenetic processes, the clay mineral assemblages allow a subdivision of the core into three intervals that reflect changes in provenance and volcanic activity. Interval I (1000–440 mbsf, 20.0–16.5 Ma) is characterised by a dominant sediment source in the Transantarctic Mountains. Frequent and short-term changes in the illite and smectite concentrations were caused by the influx of volcanic sediment components from southern McMurdo Sound and by diagenesis. Interval II (440–225 mbsf, 16.5–15.0 Ma) has much more uniform illite and smectite contents. The assemblage is derived from the Transantarctic Mountains. Interval III (225–0 mbsf, 15.0–0 Ma, containing major hiatuses) shows a distinctly enhanced volcanic influence and sediment components that come from the south of McMurdo Sound. The AND-2A clay mineral assemblages indicate persistent physical weathering conditions and do not mirror the Mid-Miocene Climatic Optimum. They indicate that the climatic changes were probably not strong enough to cause a modification in the weathering regime on the Antarctic continent. |
format |
Dataset |
author |
Franke, Daniel Ehrmann, Werner |
author_facet |
Franke, Daniel Ehrmann, Werner |
author_sort |
Franke, Daniel |
title |
Clay mineral distribution in sediment core AND-2A |
title_short |
Clay mineral distribution in sediment core AND-2A |
title_full |
Clay mineral distribution in sediment core AND-2A |
title_fullStr |
Clay mineral distribution in sediment core AND-2A |
title_full_unstemmed |
Clay mineral distribution in sediment core AND-2A |
title_sort |
clay mineral distribution in sediment core and-2a |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.729023 https://doi.org/10.1594/PANGAEA.729023 |
op_coverage |
LATITUDE: -77.758141 * LONGITUDE: 165.276765 * DATE/TIME START: 2007-10-10T12:00:00 * DATE/TIME END: 2007-11-30T12:00:00 * MINIMUM DEPTH, sediment/rock: 21.40 m * MAXIMUM DEPTH, sediment/rock: 1004.88 m |
long_lat |
ENVELOPE(166.667,166.667,-77.850,-77.850) ENVELOPE(165.276765,165.276765,-77.758141,-77.758141) |
geographic |
Antarctic Arctic McMurdo Sound McMurdo Station Ross Sea The Antarctic Transantarctic Mountains |
geographic_facet |
Antarctic Arctic McMurdo Sound McMurdo Station Ross Sea The Antarctic Transantarctic Mountains |
genre |
Antarc* Antarctic Antarctica Arctic McMurdo Sound Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Arctic McMurdo Sound Ross Sea Sea ice |
op_source |
Supplement to: Franke, Daniel; Ehrmann, Werner (2010): Neogene clay mineral assemblages in the AND-2A drill core (McMurdo Sound, Antarctica) and their implications for environmental change. Palaeogeography, Palaeoclimatology, Palaeoecology, 286, 55-65, https://doi.org/10.1016/j.palaeo.2009.12.003 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.729023 https://doi.org/10.1594/PANGAEA.729023 |
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.729023 https://doi.org/10.1016/j.palaeo.2009.12.003 |
_version_ |
1766151985047797760 |