(Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B
Color variations were interpreted in paleoceanographic terms for the late Pliocene-Pleistocene sediments recovered by ODP Leg 172 on deep-sea drifts at Blake-Bahama Outer Ridge and northeastern Bermuda Rise. The color-derived parameters used in interpretation included predicted carbonate content, te...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.764310 2023-05-15T16:41:29+02:00 (Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B Giosan, Liviu Flood, Roger D Gruetzner, Jens Mudie, Peta J MEDIAN LATITUDE: 31.873220 * MEDIAN LONGITUDE: -63.212293 * SOUTH-BOUND LATITUDE: 28.246470 * WEST-BOUND LONGITUDE: -74.407000 * NORTH-BOUND LATITUDE: 33.686720 * EAST-BOUND LONGITUDE: -57.614940 * DATE/TIME START: 1997-03-15T23:45:00 * DATE/TIME END: 1997-03-31T02:10:00 * MINIMUM ELEVATION: -4763.0 m * MAXIMUM ELEVATION: -4583.0 m 2002-08-23 text/tab-separated-values, 126 data points https://doi.pangaea.de/10.1594/PANGAEA.764310 https://doi.org/10.1594/PANGAEA.764310 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.764310 https://doi.org/10.1594/PANGAEA.764310 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Giosan, Liviu; Flood, Roger D; Gruetzner, Jens; Mudie, Peta J (2002): Paleoceanographic significance of sediment color on western North Atlantic Drifts: II. Late Pliocene-Pleistocene sedimentation. Marine Geology, 189(1-2), 43-61, https://doi.org/10.1016/S0025-3227(02)00322-5 172-1062B 172-1063A 172-1063B Age maximum/old minimum/young Apiculatisporis Blake-Bahama Outer Ridge North Atlantic Ocean Color description Converrucosisporites Counting palynology Densosporites DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Florinites Joides Resolution Laevigatosporites Leg172 Leiotriletes Lophotriletes Lycospora Murospora Ocean Drilling Program ODP Punctatisporites Sample code/label Smear slide analysis Spores indeterminata Total counts Triquitrites Verrucosisporites Dataset 2002 ftpangaea https://doi.org/10.1594/PANGAEA.764310 https://doi.org/10.1016/S0025-3227(02)00322-5 2023-01-20T08:52:37Z Color variations were interpreted in paleoceanographic terms for the late Pliocene-Pleistocene sediments recovered by ODP Leg 172 on deep-sea drifts at Blake-Bahama Outer Ridge and northeastern Bermuda Rise. The color-derived parameters used in interpretation included predicted carbonate content, terrigenous fluxes, and hematite content. Abundance of Upper Carboniferous spores indicates that the hematite is probably derived from the Permo-Carboniferous red beds of the Canadian Maritimes. In the last 800 kyr sedimentation pattern changes on the Blake-Bahama Outer Ridge were determined by the sediment delivery to the deep basin as well as circulation changes. Sediment delivery increased during glacials (especially during the last 500 kyr and particularly since Stage 6). A fundamental change in the thermohaline circulation occurred at about 500 ka corresponding to the end of the Mid-Pleistocene Transition period at the onset of the predominant 100-kyr climate cyclicity. Sedimentation related to WBUC had intensified at that time and had become more focused at depths below 3000 m. Changes in hematite content and sedimentation rate show a pulse of sediment via the St. Lawrence outlet at the Pliocene-Pleistocene boundary suggesting that a likely change in the hydrography/physiography of the Laurentide Ice Sheet could have been involved in the climatic and ocean circulation changes at that time. Dataset Ice Sheet North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-74.407000,-57.614940,33.686720,28.246470) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
172-1062B 172-1063A 172-1063B Age maximum/old minimum/young Apiculatisporis Blake-Bahama Outer Ridge North Atlantic Ocean Color description Converrucosisporites Counting palynology Densosporites DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Florinites Joides Resolution Laevigatosporites Leg172 Leiotriletes Lophotriletes Lycospora Murospora Ocean Drilling Program ODP Punctatisporites Sample code/label Smear slide analysis Spores indeterminata Total counts Triquitrites Verrucosisporites |
spellingShingle |
172-1062B 172-1063A 172-1063B Age maximum/old minimum/young Apiculatisporis Blake-Bahama Outer Ridge North Atlantic Ocean Color description Converrucosisporites Counting palynology Densosporites DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Florinites Joides Resolution Laevigatosporites Leg172 Leiotriletes Lophotriletes Lycospora Murospora Ocean Drilling Program ODP Punctatisporites Sample code/label Smear slide analysis Spores indeterminata Total counts Triquitrites Verrucosisporites Giosan, Liviu Flood, Roger D Gruetzner, Jens Mudie, Peta J (Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B |
topic_facet |
172-1062B 172-1063A 172-1063B Age maximum/old minimum/young Apiculatisporis Blake-Bahama Outer Ridge North Atlantic Ocean Color description Converrucosisporites Counting palynology Densosporites DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Florinites Joides Resolution Laevigatosporites Leg172 Leiotriletes Lophotriletes Lycospora Murospora Ocean Drilling Program ODP Punctatisporites Sample code/label Smear slide analysis Spores indeterminata Total counts Triquitrites Verrucosisporites |
description |
Color variations were interpreted in paleoceanographic terms for the late Pliocene-Pleistocene sediments recovered by ODP Leg 172 on deep-sea drifts at Blake-Bahama Outer Ridge and northeastern Bermuda Rise. The color-derived parameters used in interpretation included predicted carbonate content, terrigenous fluxes, and hematite content. Abundance of Upper Carboniferous spores indicates that the hematite is probably derived from the Permo-Carboniferous red beds of the Canadian Maritimes. In the last 800 kyr sedimentation pattern changes on the Blake-Bahama Outer Ridge were determined by the sediment delivery to the deep basin as well as circulation changes. Sediment delivery increased during glacials (especially during the last 500 kyr and particularly since Stage 6). A fundamental change in the thermohaline circulation occurred at about 500 ka corresponding to the end of the Mid-Pleistocene Transition period at the onset of the predominant 100-kyr climate cyclicity. Sedimentation related to WBUC had intensified at that time and had become more focused at depths below 3000 m. Changes in hematite content and sedimentation rate show a pulse of sediment via the St. Lawrence outlet at the Pliocene-Pleistocene boundary suggesting that a likely change in the hydrography/physiography of the Laurentide Ice Sheet could have been involved in the climatic and ocean circulation changes at that time. |
format |
Dataset |
author |
Giosan, Liviu Flood, Roger D Gruetzner, Jens Mudie, Peta J |
author_facet |
Giosan, Liviu Flood, Roger D Gruetzner, Jens Mudie, Peta J |
author_sort |
Giosan, Liviu |
title |
(Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B |
title_short |
(Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B |
title_full |
(Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B |
title_fullStr |
(Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B |
title_full_unstemmed |
(Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B |
title_sort |
(table 1) upper carboniferous spores abundances from odp holes 172-1062b, 172-1063a and 172-1063b |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.764310 https://doi.org/10.1594/PANGAEA.764310 |
op_coverage |
MEDIAN LATITUDE: 31.873220 * MEDIAN LONGITUDE: -63.212293 * SOUTH-BOUND LATITUDE: 28.246470 * WEST-BOUND LONGITUDE: -74.407000 * NORTH-BOUND LATITUDE: 33.686720 * EAST-BOUND LONGITUDE: -57.614940 * DATE/TIME START: 1997-03-15T23:45:00 * DATE/TIME END: 1997-03-31T02:10:00 * MINIMUM ELEVATION: -4763.0 m * MAXIMUM ELEVATION: -4583.0 m |
long_lat |
ENVELOPE(-74.407000,-57.614940,33.686720,28.246470) |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_source |
Supplement to: Giosan, Liviu; Flood, Roger D; Gruetzner, Jens; Mudie, Peta J (2002): Paleoceanographic significance of sediment color on western North Atlantic Drifts: II. Late Pliocene-Pleistocene sedimentation. Marine Geology, 189(1-2), 43-61, https://doi.org/10.1016/S0025-3227(02)00322-5 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.764310 https://doi.org/10.1594/PANGAEA.764310 |
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.764310 https://doi.org/10.1016/S0025-3227(02)00322-5 |
_version_ |
1766031929052758016 |