Geomagnetic excursions and paleointensities in the Matuyama Chron at Ocean Drilling Program Sites 983 and 984 (Iceland Basin)
International audience We report natural remanent magnetization (NRM) directions and geomagnetic paleointensity proxies for part of the Matuyama Chron (0.9-2.2 Ma interval) from two sites located on sediment drifts in the Iceland Basin. At Ocean Drilling Program Sites 983 and 984, mean sedimentation...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2002
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-03118344 https://hal.archives-ouvertes.fr/hal-03118344/document https://hal.archives-ouvertes.fr/hal-03118344/file/2001JB000491.pdf https://doi.org/10.1029/2001JB000491 |
id |
ftccsdartic:oai:HAL:hal-03118344v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-03118344v1 2023-05-15T16:47:58+02:00 Geomagnetic excursions and paleointensities in the Matuyama Chron at Ocean Drilling Program Sites 983 and 984 (Iceland Basin) Channell, J.E.T. Mazaud, A. Sullivan, P. Turner, S. Raymo, M.E. University of Florida Gainesville (UF) Climat et Magnétisme (CLIMAG) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Department of Environmental, Earth and Ocean Sciences Boston (EEOS) University of Massachusetts Boston (UMass Boston) University of Massachusetts System (UMASS)-University of Massachusetts System (UMASS) 2002 https://hal.archives-ouvertes.fr/hal-03118344 https://hal.archives-ouvertes.fr/hal-03118344/document https://hal.archives-ouvertes.fr/hal-03118344/file/2001JB000491.pdf https://doi.org/10.1029/2001JB000491 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2001JB000491 hal-03118344 https://hal.archives-ouvertes.fr/hal-03118344 https://hal.archives-ouvertes.fr/hal-03118344/document https://hal.archives-ouvertes.fr/hal-03118344/file/2001JB000491.pdf doi:10.1029/2001JB000491 info:eu-repo/semantics/OpenAccess ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal.archives-ouvertes.fr/hal-03118344 Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2002, 107 (B6), pp.EPM 1-1-EPM 1-14. ⟨10.1029/2001JB000491⟩ Paleomagnetism paleointensity Matuyama Chron excursions [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2002 ftccsdartic https://doi.org/10.1029/2001JB000491 2021-12-19T00:33:04Z International audience We report natural remanent magnetization (NRM) directions and geomagnetic paleointensity proxies for part of the Matuyama Chron (0.9-2.2 Ma interval) from two sites located on sediment drifts in the Iceland Basin. At Ocean Drilling Program Sites 983 and 984, mean sedimentation rates in the late Matuyama Chron are 15.9 and 11.5 cm kyr À1 , respectively. For the older part of the record (>1.2 Ma), oxygen isotope data are too sparse to provide the sole basis for age model construction. The resemblance of the volume susceptibility record and a reference d 18 O record led us to match the two records to derive the age models. This match, based on Site 983/984 susceptibility, is consistent with available Site 983/984 benthic d 18 O data. Paleointensity proxies were derived from the slope of the NRM versus anhysteretic remanent magnetization plot for alternating field demagnetization in the 30-60 mT peak field range. Paleointensity lows correspond to polarity reversals at the limits of the Jaramillo, Olduvai, Cobb Mountain, and Réunion Subchrons and to seven excursions in NRM component directions. Magnetic excursions (defined here by virtual geomagnetic polar latitudes crossing the virtual geomagnetic equator) are Article in Journal/Newspaper Iceland Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Geophysical Research 107 B6 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Paleomagnetism paleointensity Matuyama Chron excursions [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
Paleomagnetism paleointensity Matuyama Chron excursions [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Channell, J.E.T. Mazaud, A. Sullivan, P. Turner, S. Raymo, M.E. Geomagnetic excursions and paleointensities in the Matuyama Chron at Ocean Drilling Program Sites 983 and 984 (Iceland Basin) |
topic_facet |
Paleomagnetism paleointensity Matuyama Chron excursions [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience We report natural remanent magnetization (NRM) directions and geomagnetic paleointensity proxies for part of the Matuyama Chron (0.9-2.2 Ma interval) from two sites located on sediment drifts in the Iceland Basin. At Ocean Drilling Program Sites 983 and 984, mean sedimentation rates in the late Matuyama Chron are 15.9 and 11.5 cm kyr À1 , respectively. For the older part of the record (>1.2 Ma), oxygen isotope data are too sparse to provide the sole basis for age model construction. The resemblance of the volume susceptibility record and a reference d 18 O record led us to match the two records to derive the age models. This match, based on Site 983/984 susceptibility, is consistent with available Site 983/984 benthic d 18 O data. Paleointensity proxies were derived from the slope of the NRM versus anhysteretic remanent magnetization plot for alternating field demagnetization in the 30-60 mT peak field range. Paleointensity lows correspond to polarity reversals at the limits of the Jaramillo, Olduvai, Cobb Mountain, and Réunion Subchrons and to seven excursions in NRM component directions. Magnetic excursions (defined here by virtual geomagnetic polar latitudes crossing the virtual geomagnetic equator) are |
author2 |
University of Florida Gainesville (UF) Climat et Magnétisme (CLIMAG) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Department of Environmental, Earth and Ocean Sciences Boston (EEOS) University of Massachusetts Boston (UMass Boston) University of Massachusetts System (UMASS)-University of Massachusetts System (UMASS) |
format |
Article in Journal/Newspaper |
author |
Channell, J.E.T. Mazaud, A. Sullivan, P. Turner, S. Raymo, M.E. |
author_facet |
Channell, J.E.T. Mazaud, A. Sullivan, P. Turner, S. Raymo, M.E. |
author_sort |
Channell, J.E.T. |
title |
Geomagnetic excursions and paleointensities in the Matuyama Chron at Ocean Drilling Program Sites 983 and 984 (Iceland Basin) |
title_short |
Geomagnetic excursions and paleointensities in the Matuyama Chron at Ocean Drilling Program Sites 983 and 984 (Iceland Basin) |
title_full |
Geomagnetic excursions and paleointensities in the Matuyama Chron at Ocean Drilling Program Sites 983 and 984 (Iceland Basin) |
title_fullStr |
Geomagnetic excursions and paleointensities in the Matuyama Chron at Ocean Drilling Program Sites 983 and 984 (Iceland Basin) |
title_full_unstemmed |
Geomagnetic excursions and paleointensities in the Matuyama Chron at Ocean Drilling Program Sites 983 and 984 (Iceland Basin) |
title_sort |
geomagnetic excursions and paleointensities in the matuyama chron at ocean drilling program sites 983 and 984 (iceland basin) |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.archives-ouvertes.fr/hal-03118344 https://hal.archives-ouvertes.fr/hal-03118344/document https://hal.archives-ouvertes.fr/hal-03118344/file/2001JB000491.pdf https://doi.org/10.1029/2001JB000491 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal.archives-ouvertes.fr/hal-03118344 Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2002, 107 (B6), pp.EPM 1-1-EPM 1-14. ⟨10.1029/2001JB000491⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2001JB000491 hal-03118344 https://hal.archives-ouvertes.fr/hal-03118344 https://hal.archives-ouvertes.fr/hal-03118344/document https://hal.archives-ouvertes.fr/hal-03118344/file/2001JB000491.pdf doi:10.1029/2001JB000491 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2001JB000491 |
container_title |
Journal of Geophysical Research |
container_volume |
107 |
container_issue |
B6 |
_version_ |
1766038073632620544 |