Age model, RPI and VGP from IODP Sites 303-U1304, 303-U1305 and 303-U1306 at the Matuyama-Brunhes boundary
Integrated Ocean Drilling Program (IODP) Expedition 303 to the North Atlantic provided 16 records of the Matuyama-Brunhes polarity transition (MBT), based on u-channel and discrete samples, from holes drilled at three sites (Sites U1304, U1305 and U1306) that have mean Brunhes sedimentation rates of...
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2020
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.919883 https://doi.org/10.1594/PANGAEA.919883 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.919883 2023-05-15T16:52:56+02:00 Age model, RPI and VGP from IODP Sites 303-U1304, 303-U1305 and 303-U1306 at the Matuyama-Brunhes boundary Channell, James E T MEDIAN LATITUDE: 56.231472 * MEDIAN LONGITUDE: -42.564531 * SOUTH-BOUND LATITUDE: 53.000000 * WEST-BOUND LONGITUDE: -48.530700 * NORTH-BOUND LATITUDE: 58.237133 * EAST-BOUND LONGITUDE: -33.529000 2020-07-06 application/zip, 12 datasets https://doi.pangaea.de/10.1594/PANGAEA.919883 https://doi.org/10.1594/PANGAEA.919883 en eng PANGAEA Channell, James E T (2017): Complexity in Matuyama–Brunhes polarity transitions from North Atlantic IODP/ODP deep-sea sites. Earth and Planetary Science Letters, 467, 43-56, https://doi.org/10.1016/j.epsl.2017.03.019 https://doi.pangaea.de/10.1594/PANGAEA.919883 https://doi.org/10.1594/PANGAEA.919883 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Site U1304 IODP Site U1305 IODP Site U1306 Matuyama-Brunhes polarity transition Dataset 2020 ftpangaea https://doi.org/10.1594/PANGAEA.919883 https://doi.org/10.1016/j.epsl.2017.03.019 2023-01-20T07:34:36Z Integrated Ocean Drilling Program (IODP) Expedition 303 to the North Atlantic provided 16 records of the Matuyama-Brunhes polarity transition (MBT), based on u-channel and discrete samples, from holes drilled at three sites (Sites U1304, U1305 and U1306) that have mean Brunhes sedimentation rates of 16-18 cm/kyr. The MBT occurs during the transition from marine isotope stage (MIS) 19c to MIS 18e, with mid-point at ~773 ka, and a transition duration of ~8 kyr. Combining the new MBT records, including one new record for the top Jaramillo, with previously published North Atlantic MBT records (ODP Sites 983, 984 and 1063) yields a total of more than 20 high-sedimentation-rate polarity transition records. The MBT yields a repetitive pattern of transitional field states as virtual geomagnetic poles (VGPs) move from high southern latitudes to loop over the Pacific, group in NE Asia, and transit into the mid-latitude South Atlantic before reaching high latitudes in the Northern Hemisphere. The VGPs for the top Jaramillo transition feature a loop over the Pacific, then a NE Asia group before transit over the Indian Ocean to high southerly latitudes. The North Atlantic MBT records described here contrast with longitudinally-constrained VGP paths for the MBT, indicating that relatively low sedimentation rate (~4 cm/kyr) records of the MBT are heavily smoothed by the remanence acquisition process and do not adequately represent the MBT field. The VGPs at the MBT and top Jaramillo, as measured in the North Atlantic, have similarities with excursion (Iceland Basin) VGP paths, and were apparently guided by maxima in downward vertical flux similar to those seen in the modern non-dipole (ND) field, implying longevity in ND features through time. Dataset Iceland North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Pacific Indian ENVELOPE(-48.530700,-33.529000,58.237133,53.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Site U1304 IODP Site U1305 IODP Site U1306 Matuyama-Brunhes polarity transition |
spellingShingle |
Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Site U1304 IODP Site U1305 IODP Site U1306 Matuyama-Brunhes polarity transition Channell, James E T Age model, RPI and VGP from IODP Sites 303-U1304, 303-U1305 and 303-U1306 at the Matuyama-Brunhes boundary |
topic_facet |
Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Site U1304 IODP Site U1305 IODP Site U1306 Matuyama-Brunhes polarity transition |
description |
Integrated Ocean Drilling Program (IODP) Expedition 303 to the North Atlantic provided 16 records of the Matuyama-Brunhes polarity transition (MBT), based on u-channel and discrete samples, from holes drilled at three sites (Sites U1304, U1305 and U1306) that have mean Brunhes sedimentation rates of 16-18 cm/kyr. The MBT occurs during the transition from marine isotope stage (MIS) 19c to MIS 18e, with mid-point at ~773 ka, and a transition duration of ~8 kyr. Combining the new MBT records, including one new record for the top Jaramillo, with previously published North Atlantic MBT records (ODP Sites 983, 984 and 1063) yields a total of more than 20 high-sedimentation-rate polarity transition records. The MBT yields a repetitive pattern of transitional field states as virtual geomagnetic poles (VGPs) move from high southern latitudes to loop over the Pacific, group in NE Asia, and transit into the mid-latitude South Atlantic before reaching high latitudes in the Northern Hemisphere. The VGPs for the top Jaramillo transition feature a loop over the Pacific, then a NE Asia group before transit over the Indian Ocean to high southerly latitudes. The North Atlantic MBT records described here contrast with longitudinally-constrained VGP paths for the MBT, indicating that relatively low sedimentation rate (~4 cm/kyr) records of the MBT are heavily smoothed by the remanence acquisition process and do not adequately represent the MBT field. The VGPs at the MBT and top Jaramillo, as measured in the North Atlantic, have similarities with excursion (Iceland Basin) VGP paths, and were apparently guided by maxima in downward vertical flux similar to those seen in the modern non-dipole (ND) field, implying longevity in ND features through time. |
format |
Dataset |
author |
Channell, James E T |
author_facet |
Channell, James E T |
author_sort |
Channell, James E T |
title |
Age model, RPI and VGP from IODP Sites 303-U1304, 303-U1305 and 303-U1306 at the Matuyama-Brunhes boundary |
title_short |
Age model, RPI and VGP from IODP Sites 303-U1304, 303-U1305 and 303-U1306 at the Matuyama-Brunhes boundary |
title_full |
Age model, RPI and VGP from IODP Sites 303-U1304, 303-U1305 and 303-U1306 at the Matuyama-Brunhes boundary |
title_fullStr |
Age model, RPI and VGP from IODP Sites 303-U1304, 303-U1305 and 303-U1306 at the Matuyama-Brunhes boundary |
title_full_unstemmed |
Age model, RPI and VGP from IODP Sites 303-U1304, 303-U1305 and 303-U1306 at the Matuyama-Brunhes boundary |
title_sort |
age model, rpi and vgp from iodp sites 303-u1304, 303-u1305 and 303-u1306 at the matuyama-brunhes boundary |
publisher |
PANGAEA |
publishDate |
2020 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.919883 https://doi.org/10.1594/PANGAEA.919883 |
op_coverage |
MEDIAN LATITUDE: 56.231472 * MEDIAN LONGITUDE: -42.564531 * SOUTH-BOUND LATITUDE: 53.000000 * WEST-BOUND LONGITUDE: -48.530700 * NORTH-BOUND LATITUDE: 58.237133 * EAST-BOUND LONGITUDE: -33.529000 |
long_lat |
ENVELOPE(-48.530700,-33.529000,58.237133,53.000000) |
geographic |
Pacific Indian |
geographic_facet |
Pacific Indian |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_relation |
Channell, James E T (2017): Complexity in Matuyama–Brunhes polarity transitions from North Atlantic IODP/ODP deep-sea sites. Earth and Planetary Science Letters, 467, 43-56, https://doi.org/10.1016/j.epsl.2017.03.019 https://doi.pangaea.de/10.1594/PANGAEA.919883 https://doi.org/10.1594/PANGAEA.919883 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.919883 https://doi.org/10.1016/j.epsl.2017.03.019 |
_version_ |
1766043439049211904 |