Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2)
Cape Roberts Project drillcore 1 was obtained from Roberts Ridge, a sea-floor high located at 77°S, 16 km offshore from Cape Roberts in western McMurdo Sound, Antarctica. The recovered core is about 147 m long with the upper 43.15 metres below the sea floor (revised figure) being dated as Quarternar...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.433089 2023-05-15T13:50:45+02:00 Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2) Powell, Ross Hambrey, Mike J Krissek, Lawrence A 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: 20.565 m * MAXIMUM DEPTH, sediment/rock: 148.595 m 1998-01-15 text/tab-separated-values, 157 data points https://doi.pangaea.de/10.1594/PANGAEA.433089 https://doi.org/10.1594/PANGAEA.433089 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.433089 https://doi.org/10.1594/PANGAEA.433089 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Powell, Ross; Hambrey, Mike J; Krissek, Lawrence A (1998): Quaternary and Miocene glacial and climatic history of the Cape Roberts drillsite region, Antarctica. Terra Antartica, 5(3), 341-351, hdl:10013/epic.28313.d001 16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS Depth bottom/max sediment/rock top/min Environment Facies name/code Lithology/composition/facies off Cape Roberts Ross Sea Antarctica Sampling/drilling ice Dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.433089 2023-01-20T08:18:45Z Cape Roberts Project drillcore 1 was obtained from Roberts Ridge, a sea-floor high located at 77°S, 16 km offshore from Cape Roberts in western McMurdo Sound, Antarctica. The recovered core is about 147 m long with the upper 43.15 metres below the sea floor (revised figure) being dated as Quarternary and the older part of the sequence being Miocene. The core includes nine facies: sandy diamict, muddy diamict, gravel/conglomerate, mud(stone), clay(stone) and carbonate. These facies occure in associations that are repeated in particulare sequences throughout the core, and are interpreted as representing different depositional environments through time. Seven lithofacies associations are interpreted as representing offshore shelf, ice protected/below wave-base; prodeltaic/offshore shelf; delta front/sandy shelf; ice system; subglacial till/rainout diamict/debris flow diamicts singly or in combination; and a carbonate-rich shelf bank. The facies associations are used to infer that the Quaternary section represents deposition on a polar shelf with perhaps two or three glacial fluctuations. The Quaternary carbonate unit indicates a period of ice sheet retreat, but local glacial activity may have increased with an increase in costal precipitation. The Miocene section represents polythermal glacial systems. The older Miocene section is glacially dominated whereas the younger section is much less so. The glacially dominated section may provide evidence for a major glacial advance thar resulted un a low stand of global eustatic sea level at that time. After the low stand, eustatic sea level was gradually rising during deposition of the younger section dominated more by non-glacial processes. Dataset Antarc* Antarctica Ice Sheet McMurdo Sound Ross Sea PANGAEA - Data Publisher for Earth & Environmental Science Ross Sea McMurdo Sound Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Roberts Cape ENVELOPE(163.200,163.200,-77.033,-77.033) Roberts Ridge ENVELOPE(-131.500,-131.500,-86.383,-86.383) 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 Cape Roberts Project Core wireline system CRP CRP-1 CWS Depth bottom/max sediment/rock top/min Environment Facies name/code Lithology/composition/facies off Cape Roberts Ross Sea Antarctica Sampling/drilling ice |
spellingShingle |
16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS Depth bottom/max sediment/rock top/min Environment Facies name/code Lithology/composition/facies off Cape Roberts Ross Sea Antarctica Sampling/drilling ice Powell, Ross Hambrey, Mike J Krissek, Lawrence A Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2) |
topic_facet |
16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS Depth bottom/max sediment/rock top/min Environment Facies name/code Lithology/composition/facies off Cape Roberts Ross Sea Antarctica Sampling/drilling ice |
description |
Cape Roberts Project drillcore 1 was obtained from Roberts Ridge, a sea-floor high located at 77°S, 16 km offshore from Cape Roberts in western McMurdo Sound, Antarctica. The recovered core is about 147 m long with the upper 43.15 metres below the sea floor (revised figure) being dated as Quarternary and the older part of the sequence being Miocene. The core includes nine facies: sandy diamict, muddy diamict, gravel/conglomerate, mud(stone), clay(stone) and carbonate. These facies occure in associations that are repeated in particulare sequences throughout the core, and are interpreted as representing different depositional environments through time. Seven lithofacies associations are interpreted as representing offshore shelf, ice protected/below wave-base; prodeltaic/offshore shelf; delta front/sandy shelf; ice system; subglacial till/rainout diamict/debris flow diamicts singly or in combination; and a carbonate-rich shelf bank. The facies associations are used to infer that the Quaternary section represents deposition on a polar shelf with perhaps two or three glacial fluctuations. The Quaternary carbonate unit indicates a period of ice sheet retreat, but local glacial activity may have increased with an increase in costal precipitation. The Miocene section represents polythermal glacial systems. The older Miocene section is glacially dominated whereas the younger section is much less so. The glacially dominated section may provide evidence for a major glacial advance thar resulted un a low stand of global eustatic sea level at that time. After the low stand, eustatic sea level was gradually rising during deposition of the younger section dominated more by non-glacial processes. |
format |
Dataset |
author |
Powell, Ross Hambrey, Mike J Krissek, Lawrence A |
author_facet |
Powell, Ross Hambrey, Mike J Krissek, Lawrence A |
author_sort |
Powell, Ross |
title |
Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2) |
title_short |
Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2) |
title_full |
Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2) |
title_fullStr |
Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2) |
title_full_unstemmed |
Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2) |
title_sort |
description of lithofacies associations and their interpreted settings from sequences of sediment core crp-1 (table 2) |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.433089 https://doi.org/10.1594/PANGAEA.433089 |
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: 20.565 m * MAXIMUM DEPTH, sediment/rock: 148.595 m |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(163.200,163.200,-77.033,-77.033) ENVELOPE(-131.500,-131.500,-86.383,-86.383) ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
geographic |
Ross Sea McMurdo Sound Cape Roberts Roberts Cape Roberts Ridge |
geographic_facet |
Ross Sea McMurdo Sound Cape Roberts Roberts Cape Roberts Ridge |
genre |
Antarc* Antarctica Ice Sheet McMurdo Sound Ross Sea |
genre_facet |
Antarc* Antarctica Ice Sheet McMurdo Sound Ross Sea |
op_source |
Supplement to: Powell, Ross; Hambrey, Mike J; Krissek, Lawrence A (1998): Quaternary and Miocene glacial and climatic history of the Cape Roberts drillsite region, Antarctica. Terra Antartica, 5(3), 341-351, hdl:10013/epic.28313.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.433089 https://doi.org/10.1594/PANGAEA.433089 |
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.433089 |
_version_ |
1766253981038804992 |