Sedimentology of core PS1423-2, supplement to: Crawford, Kevin Richard; Kuhn, Gerhard; Hambrey, Mike J (1996): Changes in the character of glaciomarine sedimentation in the southwestern Weddell Sea, Antarctica: evidence from the core PS1423-2. Annals of Glaciology, 22, 200-204
Investigations of the stratigraphy and facies within a 2.69m long gravity core (PS1423-2) from the southwestern Weddell Sea, Antarctica, indicate a significant change in the character of glaciomarine sedimentation since grounded ice withdrew from the continental shelf. Based On visual description, X...
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PANGAEA - Data Publisher for Earth & Environmental Science
1996
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ftdatacite:10.1594/pangaea.51746 2023-05-15T13:47:06+02:00 Sedimentology of core PS1423-2, supplement to: Crawford, Kevin Richard; Kuhn, Gerhard; Hambrey, Mike J (1996): Changes in the character of glaciomarine sedimentation in the southwestern Weddell Sea, Antarctica: evidence from the core PS1423-2. Annals of Glaciology, 22, 200-204 Crawford, Kevin Richard Kuhn, Gerhard Hambrey, Mike J 1996 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.51746 https://doi.pangaea.de/10.1594/PANGAEA.51746 en eng PANGAEA - Data Publisher for Earth & Environmental Science Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY DEPTH, sediment/rock Porosity Density Density, wet bulk Carbon, organic, total Calcium carbonate Gravity corer Kiel type Calculated Pycnometer Micromeritics Element analyser CHN, LECO ANT-IV/3 Polarstern Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Supplementary Dataset dataset Dataset 1996 ftdatacite https://doi.org/10.1594/pangaea.51746 2021-11-05T12:55:41Z Investigations of the stratigraphy and facies within a 2.69m long gravity core (PS1423-2) from the southwestern Weddell Sea, Antarctica, indicate a significant change in the character of glaciomarine sedimentation since grounded ice withdrew from the continental shelf. Based On visual description, X-radiography, clast shape, particle-size analysis, physical properties and geochemical data, the core used in this analysis comprises five distinct units, from top to bottom: (i) massive diamicton, (ii) weakly to well-stratified diamicton, (iii) millimetre-scale laminated muds, with little or no coarse-clastic input, (iv) well- to weakly stratified diamicton, (V) massive diamicton. This succession is attributed to the variation in sedimentation associated with the recession of the grounding line of a previously advanced glacier. Grounded ice decoupled from the continental shelf to form an ice shelf, probably initiated by a rise in sea level in response to global climatic changes. Following disintegration of the ice shelf, sedimentation was influenced by marked variations in iceberg production. AMS derived 14C ages from the upper 46 cm of the core indicate that the succession has been deposited since the end of the most recent glacial maximum (late Plektocene), a conclusion supported by published data. Dataset Antarc* Antarctica Ice Shelf Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Crawford ENVELOPE(-86.467,-86.467,-77.717,-77.717) Weddell Weddell Sea |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
DEPTH, sediment/rock Porosity Density Density, wet bulk Carbon, organic, total Calcium carbonate Gravity corer Kiel type Calculated Pycnometer Micromeritics Element analyser CHN, LECO ANT-IV/3 Polarstern Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
spellingShingle |
DEPTH, sediment/rock Porosity Density Density, wet bulk Carbon, organic, total Calcium carbonate Gravity corer Kiel type Calculated Pycnometer Micromeritics Element analyser CHN, LECO ANT-IV/3 Polarstern Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Crawford, Kevin Richard Kuhn, Gerhard Hambrey, Mike J Sedimentology of core PS1423-2, supplement to: Crawford, Kevin Richard; Kuhn, Gerhard; Hambrey, Mike J (1996): Changes in the character of glaciomarine sedimentation in the southwestern Weddell Sea, Antarctica: evidence from the core PS1423-2. Annals of Glaciology, 22, 200-204 |
topic_facet |
DEPTH, sediment/rock Porosity Density Density, wet bulk Carbon, organic, total Calcium carbonate Gravity corer Kiel type Calculated Pycnometer Micromeritics Element analyser CHN, LECO ANT-IV/3 Polarstern Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
description |
Investigations of the stratigraphy and facies within a 2.69m long gravity core (PS1423-2) from the southwestern Weddell Sea, Antarctica, indicate a significant change in the character of glaciomarine sedimentation since grounded ice withdrew from the continental shelf. Based On visual description, X-radiography, clast shape, particle-size analysis, physical properties and geochemical data, the core used in this analysis comprises five distinct units, from top to bottom: (i) massive diamicton, (ii) weakly to well-stratified diamicton, (iii) millimetre-scale laminated muds, with little or no coarse-clastic input, (iv) well- to weakly stratified diamicton, (V) massive diamicton. This succession is attributed to the variation in sedimentation associated with the recession of the grounding line of a previously advanced glacier. Grounded ice decoupled from the continental shelf to form an ice shelf, probably initiated by a rise in sea level in response to global climatic changes. Following disintegration of the ice shelf, sedimentation was influenced by marked variations in iceberg production. AMS derived 14C ages from the upper 46 cm of the core indicate that the succession has been deposited since the end of the most recent glacial maximum (late Plektocene), a conclusion supported by published data. |
format |
Dataset |
author |
Crawford, Kevin Richard Kuhn, Gerhard Hambrey, Mike J |
author_facet |
Crawford, Kevin Richard Kuhn, Gerhard Hambrey, Mike J |
author_sort |
Crawford, Kevin Richard |
title |
Sedimentology of core PS1423-2, supplement to: Crawford, Kevin Richard; Kuhn, Gerhard; Hambrey, Mike J (1996): Changes in the character of glaciomarine sedimentation in the southwestern Weddell Sea, Antarctica: evidence from the core PS1423-2. Annals of Glaciology, 22, 200-204 |
title_short |
Sedimentology of core PS1423-2, supplement to: Crawford, Kevin Richard; Kuhn, Gerhard; Hambrey, Mike J (1996): Changes in the character of glaciomarine sedimentation in the southwestern Weddell Sea, Antarctica: evidence from the core PS1423-2. Annals of Glaciology, 22, 200-204 |
title_full |
Sedimentology of core PS1423-2, supplement to: Crawford, Kevin Richard; Kuhn, Gerhard; Hambrey, Mike J (1996): Changes in the character of glaciomarine sedimentation in the southwestern Weddell Sea, Antarctica: evidence from the core PS1423-2. Annals of Glaciology, 22, 200-204 |
title_fullStr |
Sedimentology of core PS1423-2, supplement to: Crawford, Kevin Richard; Kuhn, Gerhard; Hambrey, Mike J (1996): Changes in the character of glaciomarine sedimentation in the southwestern Weddell Sea, Antarctica: evidence from the core PS1423-2. Annals of Glaciology, 22, 200-204 |
title_full_unstemmed |
Sedimentology of core PS1423-2, supplement to: Crawford, Kevin Richard; Kuhn, Gerhard; Hambrey, Mike J (1996): Changes in the character of glaciomarine sedimentation in the southwestern Weddell Sea, Antarctica: evidence from the core PS1423-2. Annals of Glaciology, 22, 200-204 |
title_sort |
sedimentology of core ps1423-2, supplement to: crawford, kevin richard; kuhn, gerhard; hambrey, mike j (1996): changes in the character of glaciomarine sedimentation in the southwestern weddell sea, antarctica: evidence from the core ps1423-2. annals of glaciology, 22, 200-204 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1996 |
url |
https://dx.doi.org/10.1594/pangaea.51746 https://doi.pangaea.de/10.1594/PANGAEA.51746 |
long_lat |
ENVELOPE(-86.467,-86.467,-77.717,-77.717) |
geographic |
Crawford Weddell Weddell Sea |
geographic_facet |
Crawford Weddell Weddell Sea |
genre |
Antarc* Antarctica Ice Shelf Weddell Sea |
genre_facet |
Antarc* Antarctica Ice Shelf Weddell Sea |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.51746 |
_version_ |
1766246333218291712 |