High resolution oxygen isotope stratigraphy for the last 150,000
A detailed high-resolution oxygen isotope stratigraphy over the last two glacial-interglacial cycles in the southern South China Sea is presented, based upon analysis of Globigerinoides sacculifer (planktic foraminifera) in Core MD972151. Major characteristic isotopic events were identified and corr...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.546.21 2023-05-15T16:29:35+02:00 High resolution oxygen isotope stratigraphy for the last 150,000 Meng-yang Lee Kuo-yen Wei Yue-gau Chen The Pennsylvania State University CiteSeerX Archives 1999 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.21 http://corelab.iag.ntou.edu.tw/2006/Publication/Wei/Wei K-Y_MD972151-TAO.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.21 http://corelab.iag.ntou.edu.tw/2006/Publication/Wei/Wei K-Y_MD972151-TAO.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://corelab.iag.ntou.edu.tw/2006/Publication/Wei/Wei K-Y_MD972151-TAO.pdf text 1999 ftciteseerx 2016-01-08T11:17:54Z A detailed high-resolution oxygen isotope stratigraphy over the last two glacial-interglacial cycles in the southern South China Sea is presented, based upon analysis of Globigerinoides sacculifer (planktic foraminifera) in Core MD972151. Major characteristic isotopic events were identified and correlated to the standard SPECMAP chronology. In addition, radiocar-bon dating and a few biostratigraphic, geomagnetic and tephrochronologic markers were employed to enhance the reliability and resolution of the age model. The tephra layer of the Toba Eruption at 71 ka helps to anchor the boundary of Stages 5/4, and provides a yardstick correlating to the cold period between interstadials 19 and 20 identified in the GISP2 Greenland ice core. The last appearance of pink Globigerinoides ruber and the Blake magnetic polarity event in the lower part of the core helped us to locate the transition of Stage 6/5e. Our high-resolution oxygen isotope stratigraphy, however, indicates that the age of the Blake magnetic reversal occurred during the Stage 6/5e transition instead after the warmth peak of the isoto-pic event 5e. The resulting age model shows that the 26.54 m sequence from Core MD972151 provides a continuous record from 153 to 0.94 ka, with sedi-mentation rates varying between 5.6 and 78 cm/kyr. The temporal resolu-tion of the isotopic record is about 60-150 years per sample for the upper part of the core and 250 years for the lower part, respectively. Text Greenland Greenland ice core ice core Unknown Greenland |
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English |
description |
A detailed high-resolution oxygen isotope stratigraphy over the last two glacial-interglacial cycles in the southern South China Sea is presented, based upon analysis of Globigerinoides sacculifer (planktic foraminifera) in Core MD972151. Major characteristic isotopic events were identified and correlated to the standard SPECMAP chronology. In addition, radiocar-bon dating and a few biostratigraphic, geomagnetic and tephrochronologic markers were employed to enhance the reliability and resolution of the age model. The tephra layer of the Toba Eruption at 71 ka helps to anchor the boundary of Stages 5/4, and provides a yardstick correlating to the cold period between interstadials 19 and 20 identified in the GISP2 Greenland ice core. The last appearance of pink Globigerinoides ruber and the Blake magnetic polarity event in the lower part of the core helped us to locate the transition of Stage 6/5e. Our high-resolution oxygen isotope stratigraphy, however, indicates that the age of the Blake magnetic reversal occurred during the Stage 6/5e transition instead after the warmth peak of the isoto-pic event 5e. The resulting age model shows that the 26.54 m sequence from Core MD972151 provides a continuous record from 153 to 0.94 ka, with sedi-mentation rates varying between 5.6 and 78 cm/kyr. The temporal resolu-tion of the isotopic record is about 60-150 years per sample for the upper part of the core and 250 years for the lower part, respectively. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Meng-yang Lee Kuo-yen Wei Yue-gau Chen |
spellingShingle |
Meng-yang Lee Kuo-yen Wei Yue-gau Chen High resolution oxygen isotope stratigraphy for the last 150,000 |
author_facet |
Meng-yang Lee Kuo-yen Wei Yue-gau Chen |
author_sort |
Meng-yang Lee |
title |
High resolution oxygen isotope stratigraphy for the last 150,000 |
title_short |
High resolution oxygen isotope stratigraphy for the last 150,000 |
title_full |
High resolution oxygen isotope stratigraphy for the last 150,000 |
title_fullStr |
High resolution oxygen isotope stratigraphy for the last 150,000 |
title_full_unstemmed |
High resolution oxygen isotope stratigraphy for the last 150,000 |
title_sort |
high resolution oxygen isotope stratigraphy for the last 150,000 |
publishDate |
1999 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.21 http://corelab.iag.ntou.edu.tw/2006/Publication/Wei/Wei K-Y_MD972151-TAO.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core ice core |
genre_facet |
Greenland Greenland ice core ice core |
op_source |
http://corelab.iag.ntou.edu.tw/2006/Publication/Wei/Wei K-Y_MD972151-TAO.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.546.21 http://corelab.iag.ntou.edu.tw/2006/Publication/Wei/Wei K-Y_MD972151-TAO.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766019283432767488 |