Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China Sea
This study has determined the period of sedimentation of the Lingshui Formation as the Oligocene (Rupelian-Chattian) through biostratigraphic data, including planktonic foraminifera zonation. The astronomical timescale framework for the Lingshui Formation was accurately constructed by integrating ge...
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2025-01-01
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| Series: | Journal of Marine Science and Engineering |
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| author | Jianhao Liang Yaning Wang Shangfeng Zhang Yubing Liang Gaoyang Gong Rui Han |
| author_facet | Jianhao Liang Yaning Wang Shangfeng Zhang Yubing Liang Gaoyang Gong Rui Han |
| author_sort | Jianhao Liang |
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| description | This study has determined the period of sedimentation of the Lingshui Formation as the Oligocene (Rupelian-Chattian) through biostratigraphic data, including planktonic foraminifera zonation. The astronomical timescale framework for the Lingshui Formation was accurately constructed by integrating geophysical logging data and employing a multidisciplinary approach that includes time series analysis, cyclostratigraphy, astronomical dating, and Power Ratio Accumulation (PRA) methods. Sensitivity analysis of PRA has shown that natural gamma (GR) is the optimal paleoclimatic proxy, laying the foundation for subsequent analyses. The optimal sedimentation rate for the Lingshui Formation, determined by combining the coefficient of correlation (COCO) method with PRA analysis, is 5–5.4 cm/kyr. The duration of the Lingshui Formation was established at 5.02 Ma (28.52 Ma–23.5 Ma) based on time series analysis and astronomical tuning. The sediment noise model has revealed that the ~1.2 Myr obliquity modulation period has a significant impact on sea-level changes, further confirming the stratigraphic control of astronomical forcing on the sedimentation rate of the Lingshui Formation. This study establishes a high-precision astronomical timescale framework for the Lingshui Formation and provides a robust methodology, offering scientific basis for the research in astronomical chronostratigraphy and cycle stratigraphy, which has significant potential implications. |
| format | Article |
| id | doaj-art-0862d362a9644df082471f6556911bcf |
| institution | Kabale University |
| issn | 2077-1312 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-0862d362a9644df082471f6556911bcf2025-01-24T13:36:48ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-01-011318610.3390/jmse13010086Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China SeaJianhao Liang0Yaning Wang1Shangfeng Zhang2Yubing Liang3Gaoyang Gong4Rui Han5School of GeoSciences, Yangtze University, Wuhan 430100, ChinaSchool of GeoSciences, Yangtze University, Wuhan 430100, ChinaSchool of GeoSciences, Yangtze University, Wuhan 430100, ChinaSchool of GeoSciences, Yangtze University, Wuhan 430100, ChinaSchool of GeoSciences, Yangtze University, Wuhan 430100, ChinaSchool of GeoSciences, Yangtze University, Wuhan 430100, ChinaThis study has determined the period of sedimentation of the Lingshui Formation as the Oligocene (Rupelian-Chattian) through biostratigraphic data, including planktonic foraminifera zonation. The astronomical timescale framework for the Lingshui Formation was accurately constructed by integrating geophysical logging data and employing a multidisciplinary approach that includes time series analysis, cyclostratigraphy, astronomical dating, and Power Ratio Accumulation (PRA) methods. Sensitivity analysis of PRA has shown that natural gamma (GR) is the optimal paleoclimatic proxy, laying the foundation for subsequent analyses. The optimal sedimentation rate for the Lingshui Formation, determined by combining the coefficient of correlation (COCO) method with PRA analysis, is 5–5.4 cm/kyr. The duration of the Lingshui Formation was established at 5.02 Ma (28.52 Ma–23.5 Ma) based on time series analysis and astronomical tuning. The sediment noise model has revealed that the ~1.2 Myr obliquity modulation period has a significant impact on sea-level changes, further confirming the stratigraphic control of astronomical forcing on the sedimentation rate of the Lingshui Formation. This study establishes a high-precision astronomical timescale framework for the Lingshui Formation and provides a robust methodology, offering scientific basis for the research in astronomical chronostratigraphy and cycle stratigraphy, which has significant potential implications.https://www.mdpi.com/2077-1312/13/1/86astrochronologycyclostratigraphypower ratio accumulationQiongdongnan Basinplanktonic foraminiferasea-level changes |
| spellingShingle | Jianhao Liang Yaning Wang Shangfeng Zhang Yubing Liang Gaoyang Gong Rui Han Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China Sea Journal of Marine Science and Engineering astrochronology cyclostratigraphy power ratio accumulation Qiongdongnan Basin planktonic foraminifera sea-level changes |
| title | Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China Sea |
| title_full | Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China Sea |
| title_fullStr | Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China Sea |
| title_full_unstemmed | Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China Sea |
| title_short | Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China Sea |
| title_sort | astronomical chronology framework of the lingshui formation oligocene in the northern south china sea |
| topic | astrochronology cyclostratigraphy power ratio accumulation Qiongdongnan Basin planktonic foraminifera sea-level changes |
| url | https://www.mdpi.com/2077-1312/13/1/86 |
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