(Table 5) Age determination of Tasman Sea transect samples
Quantitative analyses of planktonic foraminifera from 47 core-top samples (spatially distributed through the Tasman Sea) and cores RC12-113, E36-23, DSDP Sites 588, 592, 593, and ODP Site 828A (from a N-S transect), supplemented with stable-isotope analyses indicate that three planktonic foraminifer...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.821374 2023-05-15T17:15:00+02:00 (Table 5) Age determination of Tasman Sea transect samples Martínez, José Ignacio MEDIAN LATITUDE: -34.783767 * MEDIAN LONGITUDE: 159.340567 * SOUTH-BOUND LATITUDE: -47.887000 * WEST-BOUND LONGITUDE: 150.053000 * NORTH-BOUND LATITUDE: -24.880000 * EAST-BOUND LONGITUDE: 164.448700 * DATE/TIME START: 1968-05-06T00:00:00 * DATE/TIME END: 1982-12-19T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.10 m * MAXIMUM DEPTH, sediment/rock: 0.25 m 1994-10-29 text/tab-separated-values, 15 data points https://doi.pangaea.de/10.1594/PANGAEA.821374 https://doi.org/10.1594/PANGAEA.821374 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.821374 https://doi.org/10.1594/PANGAEA.821374 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Martínez, José Ignacio (1994): Late Pleistocene palaeocenography of the Tasman Sea: Implications for the dynamics of the warm pool in the western Pacific. Palaeogeography, Palaeoclimatology, Palaeoecology, 112(1-2), 19-62, https://doi.org/10.1016/0031-0182(94)90133-3 90-591 Age 14C AMS dated dated material dated standard deviation DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation ELT36 ELT36.023-PC Eltanin Event label Glomar Challenger Leg90 PC Piston corer RC12 RC12-113 Robert Conrad Sample code/label Sample ID South Pacific/Tasman Sea/CONT RISE Dataset 1994 ftpangaea https://doi.org/10.1594/PANGAEA.821374 https://doi.org/10.1016/0031-0182(94)90133-3 2023-01-20T09:01:48Z Quantitative analyses of planktonic foraminifera from 47 core-top samples (spatially distributed through the Tasman Sea) and cores RC12-113, E36-23, DSDP Sites 588, 592, 593, and ODP Site 828A (from a N-S transect), supplemented with stable-isotope analyses indicate that three planktonic foraminiferal assemblages (defined by factor analysis on core-top material) correlated with three hydrographic modes defined on the basis of, sea-surface temperatures, temperature profiles, seasonal changes in temperature and mixed-layer depth. Similar assemblages were found in down-core material along the Tasman Sea transect that, combined with semi-quantitative analyses of foraminiferal assemblages (provinces), and the coiling ratio of Globorotalia truncatulinoides, allows reconstruction of the position of the Tasman Front (or the Subtropical Divergence) during the late Brunhes Chron. The results indicate that the Tasman Front migrated from its present position at ~30°S to ~26°S during the last glacial maximum. The northward migration of the Tasman Front may indicate a reduction in volume of the equatorial warm-pool and/or an increase in the strength of cool subtropical water masses. The late Pleistocene distribution of G. truncatulinoides left-coiling from appears to be related to the formation of Subantarctic Mode Water thermostads. This relationship may explain the evolutionary origin of this species in the Southwest Pacific at 2.4 Ma simultaneously with the onset of late Pliocene glaciations. The past position of the Subtropical Convergence is reconstructed by means of coilingv directions in Neogloboquadrina pachyderma. The convergence apparently migrated slightly north of 43°S (core E36-23) during glacial stages 6, 10, and 12. Dataset Neogloboquadrina pachyderma Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(150.053000,164.448700,-24.880000,-47.887000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
90-591 Age 14C AMS dated dated material dated standard deviation DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation ELT36 ELT36.023-PC Eltanin Event label Glomar Challenger Leg90 PC Piston corer RC12 RC12-113 Robert Conrad Sample code/label Sample ID South Pacific/Tasman Sea/CONT RISE |
spellingShingle |
90-591 Age 14C AMS dated dated material dated standard deviation DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation ELT36 ELT36.023-PC Eltanin Event label Glomar Challenger Leg90 PC Piston corer RC12 RC12-113 Robert Conrad Sample code/label Sample ID South Pacific/Tasman Sea/CONT RISE Martínez, José Ignacio (Table 5) Age determination of Tasman Sea transect samples |
topic_facet |
90-591 Age 14C AMS dated dated material dated standard deviation DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation ELT36 ELT36.023-PC Eltanin Event label Glomar Challenger Leg90 PC Piston corer RC12 RC12-113 Robert Conrad Sample code/label Sample ID South Pacific/Tasman Sea/CONT RISE |
description |
Quantitative analyses of planktonic foraminifera from 47 core-top samples (spatially distributed through the Tasman Sea) and cores RC12-113, E36-23, DSDP Sites 588, 592, 593, and ODP Site 828A (from a N-S transect), supplemented with stable-isotope analyses indicate that three planktonic foraminiferal assemblages (defined by factor analysis on core-top material) correlated with three hydrographic modes defined on the basis of, sea-surface temperatures, temperature profiles, seasonal changes in temperature and mixed-layer depth. Similar assemblages were found in down-core material along the Tasman Sea transect that, combined with semi-quantitative analyses of foraminiferal assemblages (provinces), and the coiling ratio of Globorotalia truncatulinoides, allows reconstruction of the position of the Tasman Front (or the Subtropical Divergence) during the late Brunhes Chron. The results indicate that the Tasman Front migrated from its present position at ~30°S to ~26°S during the last glacial maximum. The northward migration of the Tasman Front may indicate a reduction in volume of the equatorial warm-pool and/or an increase in the strength of cool subtropical water masses. The late Pleistocene distribution of G. truncatulinoides left-coiling from appears to be related to the formation of Subantarctic Mode Water thermostads. This relationship may explain the evolutionary origin of this species in the Southwest Pacific at 2.4 Ma simultaneously with the onset of late Pliocene glaciations. The past position of the Subtropical Convergence is reconstructed by means of coilingv directions in Neogloboquadrina pachyderma. The convergence apparently migrated slightly north of 43°S (core E36-23) during glacial stages 6, 10, and 12. |
format |
Dataset |
author |
Martínez, José Ignacio |
author_facet |
Martínez, José Ignacio |
author_sort |
Martínez, José Ignacio |
title |
(Table 5) Age determination of Tasman Sea transect samples |
title_short |
(Table 5) Age determination of Tasman Sea transect samples |
title_full |
(Table 5) Age determination of Tasman Sea transect samples |
title_fullStr |
(Table 5) Age determination of Tasman Sea transect samples |
title_full_unstemmed |
(Table 5) Age determination of Tasman Sea transect samples |
title_sort |
(table 5) age determination of tasman sea transect samples |
publisher |
PANGAEA |
publishDate |
1994 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.821374 https://doi.org/10.1594/PANGAEA.821374 |
op_coverage |
MEDIAN LATITUDE: -34.783767 * MEDIAN LONGITUDE: 159.340567 * SOUTH-BOUND LATITUDE: -47.887000 * WEST-BOUND LONGITUDE: 150.053000 * NORTH-BOUND LATITUDE: -24.880000 * EAST-BOUND LONGITUDE: 164.448700 * DATE/TIME START: 1968-05-06T00:00:00 * DATE/TIME END: 1982-12-19T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.10 m * MAXIMUM DEPTH, sediment/rock: 0.25 m |
long_lat |
ENVELOPE(150.053000,164.448700,-24.880000,-47.887000) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Neogloboquadrina pachyderma Planktonic foraminifera |
genre_facet |
Neogloboquadrina pachyderma Planktonic foraminifera |
op_source |
Supplement to: Martínez, José Ignacio (1994): Late Pleistocene palaeocenography of the Tasman Sea: Implications for the dynamics of the warm pool in the western Pacific. Palaeogeography, Palaeoclimatology, Palaeoecology, 112(1-2), 19-62, https://doi.org/10.1016/0031-0182(94)90133-3 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.821374 https://doi.org/10.1594/PANGAEA.821374 |
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.821374 https://doi.org/10.1016/0031-0182(94)90133-3 |
_version_ |
1766073148197830656 |