Magnetic observation of ODP Site 152-919 in the Irminger Basin, North Atlantic
Component natural remanent magnetizations derived from u-channel and 1-qcm discrete samples from ODP Site 919 (Irminger Basin) indicate the existence of four intervals of negative inclinations in the upper Brunhes Chronozone. According to the age model based on planktic oxygen isotope data, these “e...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.707321 2023-05-15T16:29:43+02:00 Magnetic observation of ODP Site 152-919 in the Irminger Basin, North Atlantic Channell, James E T LATITUDE: 62.669950 * LONGITUDE: -37.460283 * DATE/TIME START: 1993-11-13T00:00:00 * DATE/TIME END: 1993-11-15T00:00:00 2006-11-13 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.707321 https://doi.org/10.1594/PANGAEA.707321 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.707321 https://doi.org/10.1594/PANGAEA.707321 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Channell, James E T (2006): Late Brunhes polarity excursions (Mono Lake, Laschamp, Iceland Basin and Pringle Falls) recorded at ODP Site 919 (Irminger Basin). Earth and Planetary Science Letters, 244(1-2), 378-393, https://doi.org/10.1016/j.epsl.2006.01.021 152-919 COMPCORE Composite Core Greenland Sea Joides Resolution Leg152 Ocean Drilling Program ODP Dataset 2006 ftpangaea https://doi.org/10.1594/PANGAEA.707321 https://doi.org/10.1016/j.epsl.2006.01.021 2023-01-20T07:31:16Z Component natural remanent magnetizations derived from u-channel and 1-qcm discrete samples from ODP Site 919 (Irminger Basin) indicate the existence of four intervals of negative inclinations in the upper Brunhes Chronozone. According to the age model based on planktic oxygen isotope data, these “excursional” intervals occur in sediments deposited during the following time intervals: 32-34 ka, 39-41 ka, 180-188 ka and 205-225 ka. These time intervals correspond to polarity excursions detected elsewhere, known as Mono Lake, Laschamp, Iceland Basin and Pringle Falls. The isotope-based age model is supported by the normalized remanence (paleointensity) record that can be correlated to other calibrated paleointensity records for the 0–500 ka interval, such as that from ODP Site 983. For the intervals associated with the Mono Lake and Laschamp excursions, virtual geomagnetic poles (VGPs) reach equatorial latitudes and mid-southerly latitudes, respectively. For intervals associated with the Iceland Basin and Pringle Falls excursions, repeated excursions of VGPs to high southerly latitudes indicate rapid directional swings rather than a single short-lived polarity reversal. The directional instability associated with polarity excursions is not often recorded, probably due to smoothing of the sedimentary record by the process of detrital remanence (DRM) acquisition. Dataset Greenland Greenland Sea Iceland North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Greenland Irminger Basin ENVELOPE(-36.000,-36.000,61.000,61.000) ENVELOPE(-37.460283,-37.460283,62.669950,62.669950) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
152-919 COMPCORE Composite Core Greenland Sea Joides Resolution Leg152 Ocean Drilling Program ODP |
spellingShingle |
152-919 COMPCORE Composite Core Greenland Sea Joides Resolution Leg152 Ocean Drilling Program ODP Channell, James E T Magnetic observation of ODP Site 152-919 in the Irminger Basin, North Atlantic |
topic_facet |
152-919 COMPCORE Composite Core Greenland Sea Joides Resolution Leg152 Ocean Drilling Program ODP |
description |
Component natural remanent magnetizations derived from u-channel and 1-qcm discrete samples from ODP Site 919 (Irminger Basin) indicate the existence of four intervals of negative inclinations in the upper Brunhes Chronozone. According to the age model based on planktic oxygen isotope data, these “excursional” intervals occur in sediments deposited during the following time intervals: 32-34 ka, 39-41 ka, 180-188 ka and 205-225 ka. These time intervals correspond to polarity excursions detected elsewhere, known as Mono Lake, Laschamp, Iceland Basin and Pringle Falls. The isotope-based age model is supported by the normalized remanence (paleointensity) record that can be correlated to other calibrated paleointensity records for the 0–500 ka interval, such as that from ODP Site 983. For the intervals associated with the Mono Lake and Laschamp excursions, virtual geomagnetic poles (VGPs) reach equatorial latitudes and mid-southerly latitudes, respectively. For intervals associated with the Iceland Basin and Pringle Falls excursions, repeated excursions of VGPs to high southerly latitudes indicate rapid directional swings rather than a single short-lived polarity reversal. The directional instability associated with polarity excursions is not often recorded, probably due to smoothing of the sedimentary record by the process of detrital remanence (DRM) acquisition. |
format |
Dataset |
author |
Channell, James E T |
author_facet |
Channell, James E T |
author_sort |
Channell, James E T |
title |
Magnetic observation of ODP Site 152-919 in the Irminger Basin, North Atlantic |
title_short |
Magnetic observation of ODP Site 152-919 in the Irminger Basin, North Atlantic |
title_full |
Magnetic observation of ODP Site 152-919 in the Irminger Basin, North Atlantic |
title_fullStr |
Magnetic observation of ODP Site 152-919 in the Irminger Basin, North Atlantic |
title_full_unstemmed |
Magnetic observation of ODP Site 152-919 in the Irminger Basin, North Atlantic |
title_sort |
magnetic observation of odp site 152-919 in the irminger basin, north atlantic |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.707321 https://doi.org/10.1594/PANGAEA.707321 |
op_coverage |
LATITUDE: 62.669950 * LONGITUDE: -37.460283 * DATE/TIME START: 1993-11-13T00:00:00 * DATE/TIME END: 1993-11-15T00:00:00 |
long_lat |
ENVELOPE(-36.000,-36.000,61.000,61.000) ENVELOPE(-37.460283,-37.460283,62.669950,62.669950) |
geographic |
Greenland Irminger Basin |
geographic_facet |
Greenland Irminger Basin |
genre |
Greenland Greenland Sea Iceland North Atlantic |
genre_facet |
Greenland Greenland Sea Iceland North Atlantic |
op_source |
Supplement to: Channell, James E T (2006): Late Brunhes polarity excursions (Mono Lake, Laschamp, Iceland Basin and Pringle Falls) recorded at ODP Site 919 (Irminger Basin). Earth and Planetary Science Letters, 244(1-2), 378-393, https://doi.org/10.1016/j.epsl.2006.01.021 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.707321 https://doi.org/10.1594/PANGAEA.707321 |
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.707321 https://doi.org/10.1016/j.epsl.2006.01.021 |
_version_ |
1766019419600846848 |