A sedimentary paleomagnetic record of the upper Jaramillo transition from the Lantian Basin in China
The termination of the Jaramillo (normal to reverse) subchron is a key chronostratigraphic marker for dating global Pleistocene sedimentary sequences. However, the stratigraphic position of the geomagnetic polarity reversal varies greatly across the Chinese Loess Plateau (CLP), from near the bottom...
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SPRINGER HEIDELBERG
2015
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ftchacadscgigcas:oai:ir.gig.ac.cn:344008/54633 2023-05-15T17:33:58+02:00 A sedimentary paleomagnetic record of the upper Jaramillo transition from the Lantian Basin in China Wu, Yi Ouyang, Tingping Qiu, Shifan Rao, Zhiguo Zhu, Zhaoyu 2015-10-20 http://ir.gig.ac.cn/handle/344008/54633 https://doi.org/10.1186/s40623-015-0341-9 英语 eng SPRINGER HEIDELBERG EARTH PLANETS AND SPACE http://ir.gig.ac.cn/handle/344008/54633 doi:10.1186/s40623-015-0341-9 Geology Geomagnetic reversal Upper Jaramillo Loess Lantian Basin Chinese Loess Plateau Geosciences Multidisciplinary BRUNHES GEOMAGNETIC REVERSAL LOESS-PALEOSOL SEDIMENTS MATUYAMA-BRUNHES MAGNETIC-SUSCEPTIBILITY RELATIVE PALEOINTENSITY POLARITY REVERSAL LOCK-IN PALEOCLIMATIC SIGNIFICANCE ASTRONOMICAL CALIBRATION NORTH-ATLANTIC 期刊论文 2015 ftchacadscgigcas https://doi.org/10.1186/s40623-015-0341-9 2022-03-27T20:32:04Z The termination of the Jaramillo (normal to reverse) subchron is a key chronostratigraphic marker for dating global Pleistocene sedimentary sequences. However, the stratigraphic position of the geomagnetic polarity reversal varies greatly across the Chinese Loess Plateau (CLP), from near the bottom of paleosol unit S9 to the middle-upper part of S10. Here, we present paleomagnetic and rock magnetic results from high-resolution sampling of the Yushan loess section of the Lantian Basin located within the southern CLP. Our combined analyses determine that the polarity reversal is located in the middle-lower part of the paleosol unit S10. This stratigraphic position is lower than most of other studies conducted throughout the CLP. We attribute the difference in the location of the reversal to a deeper lock-in depth of remanence acquisition, which may have occurred from postdepositional processes under favorable hydrothermal conditions along the southern margin of CLP. It is important to note that age determinations through magnetic stratigraphy on sedimentary sections, particularly in discontinuous and/or imperfect sequences, should be treated with caution; there are significant differences with respect to the location of the polarity reversal throughout the CLP. Report North Atlantic Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) Earth, Planets and Space 67 1 |
institution |
Open Polar |
collection |
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchacadscgigcas |
language |
English |
topic |
Geology Geomagnetic reversal Upper Jaramillo Loess Lantian Basin Chinese Loess Plateau Geosciences Multidisciplinary BRUNHES GEOMAGNETIC REVERSAL LOESS-PALEOSOL SEDIMENTS MATUYAMA-BRUNHES MAGNETIC-SUSCEPTIBILITY RELATIVE PALEOINTENSITY POLARITY REVERSAL LOCK-IN PALEOCLIMATIC SIGNIFICANCE ASTRONOMICAL CALIBRATION NORTH-ATLANTIC |
spellingShingle |
Geology Geomagnetic reversal Upper Jaramillo Loess Lantian Basin Chinese Loess Plateau Geosciences Multidisciplinary BRUNHES GEOMAGNETIC REVERSAL LOESS-PALEOSOL SEDIMENTS MATUYAMA-BRUNHES MAGNETIC-SUSCEPTIBILITY RELATIVE PALEOINTENSITY POLARITY REVERSAL LOCK-IN PALEOCLIMATIC SIGNIFICANCE ASTRONOMICAL CALIBRATION NORTH-ATLANTIC Wu, Yi Ouyang, Tingping Qiu, Shifan Rao, Zhiguo Zhu, Zhaoyu A sedimentary paleomagnetic record of the upper Jaramillo transition from the Lantian Basin in China |
topic_facet |
Geology Geomagnetic reversal Upper Jaramillo Loess Lantian Basin Chinese Loess Plateau Geosciences Multidisciplinary BRUNHES GEOMAGNETIC REVERSAL LOESS-PALEOSOL SEDIMENTS MATUYAMA-BRUNHES MAGNETIC-SUSCEPTIBILITY RELATIVE PALEOINTENSITY POLARITY REVERSAL LOCK-IN PALEOCLIMATIC SIGNIFICANCE ASTRONOMICAL CALIBRATION NORTH-ATLANTIC |
description |
The termination of the Jaramillo (normal to reverse) subchron is a key chronostratigraphic marker for dating global Pleistocene sedimentary sequences. However, the stratigraphic position of the geomagnetic polarity reversal varies greatly across the Chinese Loess Plateau (CLP), from near the bottom of paleosol unit S9 to the middle-upper part of S10. Here, we present paleomagnetic and rock magnetic results from high-resolution sampling of the Yushan loess section of the Lantian Basin located within the southern CLP. Our combined analyses determine that the polarity reversal is located in the middle-lower part of the paleosol unit S10. This stratigraphic position is lower than most of other studies conducted throughout the CLP. We attribute the difference in the location of the reversal to a deeper lock-in depth of remanence acquisition, which may have occurred from postdepositional processes under favorable hydrothermal conditions along the southern margin of CLP. It is important to note that age determinations through magnetic stratigraphy on sedimentary sections, particularly in discontinuous and/or imperfect sequences, should be treated with caution; there are significant differences with respect to the location of the polarity reversal throughout the CLP. |
format |
Report |
author |
Wu, Yi Ouyang, Tingping Qiu, Shifan Rao, Zhiguo Zhu, Zhaoyu |
author_facet |
Wu, Yi Ouyang, Tingping Qiu, Shifan Rao, Zhiguo Zhu, Zhaoyu |
author_sort |
Wu, Yi |
title |
A sedimentary paleomagnetic record of the upper Jaramillo transition from the Lantian Basin in China |
title_short |
A sedimentary paleomagnetic record of the upper Jaramillo transition from the Lantian Basin in China |
title_full |
A sedimentary paleomagnetic record of the upper Jaramillo transition from the Lantian Basin in China |
title_fullStr |
A sedimentary paleomagnetic record of the upper Jaramillo transition from the Lantian Basin in China |
title_full_unstemmed |
A sedimentary paleomagnetic record of the upper Jaramillo transition from the Lantian Basin in China |
title_sort |
sedimentary paleomagnetic record of the upper jaramillo transition from the lantian basin in china |
publisher |
SPRINGER HEIDELBERG |
publishDate |
2015 |
url |
http://ir.gig.ac.cn/handle/344008/54633 https://doi.org/10.1186/s40623-015-0341-9 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
EARTH PLANETS AND SPACE http://ir.gig.ac.cn/handle/344008/54633 doi:10.1186/s40623-015-0341-9 |
op_doi |
https://doi.org/10.1186/s40623-015-0341-9 |
container_title |
Earth, Planets and Space |
container_volume |
67 |
container_issue |
1 |
_version_ |
1766132652403851264 |