Clay mineralogy of the Cenozoic Pagodroma Group, East Antarctica
The Cenozoic Pagodroma Group in the northern Prince Charles Mountains, East Antarctica, is a glaciomarine succession of fjordal character, comprising four uplifted formations of different ages. The composition of the <2 µm fraction of sediments of the Pagodroma Group was analysed in order to help...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.736666 2023-05-15T13:42:10+02:00 Clay mineralogy of the Cenozoic Pagodroma Group, East Antarctica Ehrmann, Werner Bloemendal, Jan Hambrey, Mike J McKelvey, Barrie C Whitehead, Jason M MEDIAN LATITUDE: -70.991667 * MEDIAN LONGITUDE: 67.850000 * SOUTH-BOUND LATITUDE: -71.550000 * WEST-BOUND LONGITUDE: 67.566667 * NORTH-BOUND LATITUDE: -70.083333 * EAST-BOUND LONGITUDE: 68.150000 * DATE/TIME START: 1995-01-01T00:00:00 * DATE/TIME END: 1995-01-01T00:00:00 2003-04-13 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.736666 https://doi.org/10.1594/PANGAEA.736666 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.736666 https://doi.org/10.1594/PANGAEA.736666 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Ehrmann, Werner; Bloemendal, Jan; Hambrey, Mike J; McKelvey, Barrie C; Whitehead, Jason M (2003): Variations in the composition of the clay fraction of the Cenozoic Pagodroma Group, East Antarctica: implications for determining provenance. Sedimentary Geology, 161(1-2), 131-152, https://doi.org/10.1016/S0037-0738(03)00069-1 AARE94/95 Bardin_Bluffs Bardin Bluffs East Antarctica Battye_Glacier Battye Glacier Fisher_Bench Fisher Bench Geological sample GEOS Mount_Johnson Mount Johnson Sampling on land Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.736666 https://doi.org/10.1016/S0037-0738(03)00069-1 2023-01-20T07:31:44Z The Cenozoic Pagodroma Group in the northern Prince Charles Mountains, East Antarctica, is a glaciomarine succession of fjordal character, comprising four uplifted formations of different ages. The composition of the <2 µm fraction of sediments of the Pagodroma Group was analysed in order to help identify source areas, past weathering conditions and glacial regimes. Both clay and non-clay minerals have been quantified. The assemblage of the upper Oligocene to lower Miocene Mount Johnston Formation is characterised by the dominance of illite and intermediate concentrations of chlorite. Similar to that assemblage is the clay mineral suite of the middle Miocene Fisher Bench Formation, where illite and chlorite together account for 95% of the clay minerals. The middle to upper Miocene Battye Glacier Formation is the only formation with significant and persistent smectite concentrations, although illite is still dominant. The kaolinite concentration is also high and is even higher than that of chlorite. The clay fraction of the upper Pliocene to lower Pleistocene Bardin Bluffs Formation is characterised by maximum kaolinite concentrations and relatively low illite and chlorite concentrations. The bulk of the clay fraction in each formation can be explained by the physical weathering and erosion of a nearby source under glacial conditions. In the case of Mount Johnston Formation and Fisher Bench Formation this source may be situated in the metavolcanic and gneissic rocks of Fisher Massif. The sediments of the Bardin Bluffs Formation indicate a local source within the Amery Oasis, where Proterozoic granitoid rocks and gneisses, and Permo-Triassic fluvial rocks of the Amery Group are exposed. These results suggest a strong local imprint on the glacial sediments as northwards flowing ice eroded the bedrock in these areas. The origin of the clay fraction of the Battye Glacier Formation is a matter of debate. The smectite and kaolinite content most easily can be explained by erosion of sources largely hidden beneath the ... Dataset Antarc* Antarctica Battye Glacier East Antarctica Prince Charles Mountains PANGAEA - Data Publisher for Earth & Environmental Science East Antarctica Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Battye Glacier ENVELOPE(67.900,67.900,-70.867,-70.867) Bardin Bluffs ENVELOPE(68.133,68.133,-70.819,-70.819) Fisher Massif ENVELOPE(67.667,67.667,-72.317,-72.317) Mount Johnston ENVELOPE(172.783,172.783,-85.483,-85.483) ENVELOPE(67.566667,68.150000,-70.083333,-71.550000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AARE94/95 Bardin_Bluffs Bardin Bluffs East Antarctica Battye_Glacier Battye Glacier Fisher_Bench Fisher Bench Geological sample GEOS Mount_Johnson Mount Johnson Sampling on land |
spellingShingle |
AARE94/95 Bardin_Bluffs Bardin Bluffs East Antarctica Battye_Glacier Battye Glacier Fisher_Bench Fisher Bench Geological sample GEOS Mount_Johnson Mount Johnson Sampling on land Ehrmann, Werner Bloemendal, Jan Hambrey, Mike J McKelvey, Barrie C Whitehead, Jason M Clay mineralogy of the Cenozoic Pagodroma Group, East Antarctica |
topic_facet |
AARE94/95 Bardin_Bluffs Bardin Bluffs East Antarctica Battye_Glacier Battye Glacier Fisher_Bench Fisher Bench Geological sample GEOS Mount_Johnson Mount Johnson Sampling on land |
description |
The Cenozoic Pagodroma Group in the northern Prince Charles Mountains, East Antarctica, is a glaciomarine succession of fjordal character, comprising four uplifted formations of different ages. The composition of the <2 µm fraction of sediments of the Pagodroma Group was analysed in order to help identify source areas, past weathering conditions and glacial regimes. Both clay and non-clay minerals have been quantified. The assemblage of the upper Oligocene to lower Miocene Mount Johnston Formation is characterised by the dominance of illite and intermediate concentrations of chlorite. Similar to that assemblage is the clay mineral suite of the middle Miocene Fisher Bench Formation, where illite and chlorite together account for 95% of the clay minerals. The middle to upper Miocene Battye Glacier Formation is the only formation with significant and persistent smectite concentrations, although illite is still dominant. The kaolinite concentration is also high and is even higher than that of chlorite. The clay fraction of the upper Pliocene to lower Pleistocene Bardin Bluffs Formation is characterised by maximum kaolinite concentrations and relatively low illite and chlorite concentrations. The bulk of the clay fraction in each formation can be explained by the physical weathering and erosion of a nearby source under glacial conditions. In the case of Mount Johnston Formation and Fisher Bench Formation this source may be situated in the metavolcanic and gneissic rocks of Fisher Massif. The sediments of the Bardin Bluffs Formation indicate a local source within the Amery Oasis, where Proterozoic granitoid rocks and gneisses, and Permo-Triassic fluvial rocks of the Amery Group are exposed. These results suggest a strong local imprint on the glacial sediments as northwards flowing ice eroded the bedrock in these areas. The origin of the clay fraction of the Battye Glacier Formation is a matter of debate. The smectite and kaolinite content most easily can be explained by erosion of sources largely hidden beneath the ... |
format |
Dataset |
author |
Ehrmann, Werner Bloemendal, Jan Hambrey, Mike J McKelvey, Barrie C Whitehead, Jason M |
author_facet |
Ehrmann, Werner Bloemendal, Jan Hambrey, Mike J McKelvey, Barrie C Whitehead, Jason M |
author_sort |
Ehrmann, Werner |
title |
Clay mineralogy of the Cenozoic Pagodroma Group, East Antarctica |
title_short |
Clay mineralogy of the Cenozoic Pagodroma Group, East Antarctica |
title_full |
Clay mineralogy of the Cenozoic Pagodroma Group, East Antarctica |
title_fullStr |
Clay mineralogy of the Cenozoic Pagodroma Group, East Antarctica |
title_full_unstemmed |
Clay mineralogy of the Cenozoic Pagodroma Group, East Antarctica |
title_sort |
clay mineralogy of the cenozoic pagodroma group, east antarctica |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.736666 https://doi.org/10.1594/PANGAEA.736666 |
op_coverage |
MEDIAN LATITUDE: -70.991667 * MEDIAN LONGITUDE: 67.850000 * SOUTH-BOUND LATITUDE: -71.550000 * WEST-BOUND LONGITUDE: 67.566667 * NORTH-BOUND LATITUDE: -70.083333 * EAST-BOUND LONGITUDE: 68.150000 * DATE/TIME START: 1995-01-01T00:00:00 * DATE/TIME END: 1995-01-01T00:00:00 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(67.246,67.246,-71.427,-71.427) ENVELOPE(67.900,67.900,-70.867,-70.867) ENVELOPE(68.133,68.133,-70.819,-70.819) ENVELOPE(67.667,67.667,-72.317,-72.317) ENVELOPE(172.783,172.783,-85.483,-85.483) ENVELOPE(67.566667,68.150000,-70.083333,-71.550000) |
geographic |
East Antarctica Amery Prince Charles Mountains Battye Glacier Bardin Bluffs Fisher Massif Mount Johnston |
geographic_facet |
East Antarctica Amery Prince Charles Mountains Battye Glacier Bardin Bluffs Fisher Massif Mount Johnston |
genre |
Antarc* Antarctica Battye Glacier East Antarctica Prince Charles Mountains |
genre_facet |
Antarc* Antarctica Battye Glacier East Antarctica Prince Charles Mountains |
op_source |
Supplement to: Ehrmann, Werner; Bloemendal, Jan; Hambrey, Mike J; McKelvey, Barrie C; Whitehead, Jason M (2003): Variations in the composition of the clay fraction of the Cenozoic Pagodroma Group, East Antarctica: implications for determining provenance. Sedimentary Geology, 161(1-2), 131-152, https://doi.org/10.1016/S0037-0738(03)00069-1 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.736666 https://doi.org/10.1594/PANGAEA.736666 |
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.736666 https://doi.org/10.1016/S0037-0738(03)00069-1 |
_version_ |
1766163764634189824 |