A fossil diatom-based reconstruction of sea-level changes for the Late Pleistocene and Holocene period in the NW South China Sea
Marine transgressions-regressions have profoundly shaped marginal seas following global sea-level fluctuations driven by climate change. This study on a sedimentary core profile SO219/31-4 from the Beibu Gulf, northwestern South China Sea (SCS), reveals information about paleoenvironment, paleoceano...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Oceanologia |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0078323422000586 |
| _version_ | 1811159941988220928 |
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| author | Jinpeng Zhang Michal Tomczak Andrzej Witkowski Xia Zhen Chao Li |
| author_facet | Jinpeng Zhang Michal Tomczak Andrzej Witkowski Xia Zhen Chao Li |
| author_sort | Jinpeng Zhang |
| collection | DOAJ |
| description | Marine transgressions-regressions have profoundly shaped marginal seas following global sea-level fluctuations driven by climate change. This study on a sedimentary core profile SO219/31-4 from the Beibu Gulf, northwestern South China Sea (SCS), reveals information about paleoenvironment, paleoceanography and paleoclimate changes through fossil diatom assemblages and grain size distributions during the last ca. 12900 cal. yr. BP. Eight local diatom assemblage zones were distinguished and assigned to paleoenvironmental fluctuations recording sea-level and depositional environment changes in eight stages, ca. 12900–11700 (stage 1), ca. 11700–9500 (stage 2), ca. 9500–7200 (stage 3), ca. 7200–5800 (stage 4), ca. 5800–3800 (stage 5), ca. 3800–2400 (stage 6), ca. 2400–800 (stage 7) and ca. 800–0 (stage 8), cal. yr. BP. After the low sea level of stage 1 within the last deglaciation, rapid increases in sea level in stages 2 and 3 were recorded as meltwater events pulse-1B and pulse-1C resulting in marine transgression rates of ca. 16 m/kyr and 8 m/kyr, respectively. The high sea level, above the present level, in stages 4 and 5, in the Middle Holocene Climatic Optimum period, was clearly documented by more significant open sea/tropical diatom species and coastal planktonic species percentages, respectively. The late Holocene regression of sea levels was marked by a pronounced reversion of diatom taphocoenosis, responding to neoglacial climate. Fossil diatom assemblages outlined responded to paleoclimate of global warming in the deglacial and early Holocene. This study provides additional insights into the late Pleistocene and Post-glacial history of a tropical-subtropical shallow water gulf, in the NW-SCS. |
| first_indexed | 2024-04-10T05:49:14Z |
| format | Article |
| id | doaj.art-009c672350e04238a66275b13c23a518 |
| institution | Directory Open Access Journal |
| issn | 0078-3234 |
| language | English |
| last_indexed | 2024-04-10T05:49:14Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Oceanologia |
| spelling | doaj.art-009c672350e04238a66275b13c23a5182023-03-05T04:23:03ZengElsevierOceanologia0078-32342023-01-01651211229A fossil diatom-based reconstruction of sea-level changes for the Late Pleistocene and Holocene period in the NW South China SeaJinpeng Zhang0Michal Tomczak1Andrzej Witkowski2Xia Zhen3Chao Li4Guangzhou Marine Geological Survey, China Geological Survey/Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), China; Institute of Marine and Environmental Sciences, University of Szczecin, Poland; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, China; Corresponding author at: Guangzhou Marine Geological Survey, China Geological Survey/Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), 1119 Haibin Rd., Guangzhou 511458, China; Institute of Marine and Environmental Sciences, University of Szczecin, 16 Mickiewicza St., Szczecin 70-383, Poland; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, 11 Chinese Academy of Sciences, 39 Beijingdong Rd., Nangjing 210008, China.Polish Geological Institute – National Research Institute, Warsaw, PolandInstitute of Marine and Environmental Sciences, University of Szczecin, PolandGuangzhou Marine Geological Survey, China Geological Survey/Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), ChinaCollege of Ocean and Earth Sciences, Xiamen University, Xiamen, ChinaMarine transgressions-regressions have profoundly shaped marginal seas following global sea-level fluctuations driven by climate change. This study on a sedimentary core profile SO219/31-4 from the Beibu Gulf, northwestern South China Sea (SCS), reveals information about paleoenvironment, paleoceanography and paleoclimate changes through fossil diatom assemblages and grain size distributions during the last ca. 12900 cal. yr. BP. Eight local diatom assemblage zones were distinguished and assigned to paleoenvironmental fluctuations recording sea-level and depositional environment changes in eight stages, ca. 12900–11700 (stage 1), ca. 11700–9500 (stage 2), ca. 9500–7200 (stage 3), ca. 7200–5800 (stage 4), ca. 5800–3800 (stage 5), ca. 3800–2400 (stage 6), ca. 2400–800 (stage 7) and ca. 800–0 (stage 8), cal. yr. BP. After the low sea level of stage 1 within the last deglaciation, rapid increases in sea level in stages 2 and 3 were recorded as meltwater events pulse-1B and pulse-1C resulting in marine transgression rates of ca. 16 m/kyr and 8 m/kyr, respectively. The high sea level, above the present level, in stages 4 and 5, in the Middle Holocene Climatic Optimum period, was clearly documented by more significant open sea/tropical diatom species and coastal planktonic species percentages, respectively. The late Holocene regression of sea levels was marked by a pronounced reversion of diatom taphocoenosis, responding to neoglacial climate. Fossil diatom assemblages outlined responded to paleoclimate of global warming in the deglacial and early Holocene. This study provides additional insights into the late Pleistocene and Post-glacial history of a tropical-subtropical shallow water gulf, in the NW-SCS.http://www.sciencedirect.com/science/article/pii/S0078323422000586DiatomTransgression and regressionSea-level changesPaleoclimateHoloceneBeibu Gulf |
| spellingShingle | Jinpeng Zhang Michal Tomczak Andrzej Witkowski Xia Zhen Chao Li A fossil diatom-based reconstruction of sea-level changes for the Late Pleistocene and Holocene period in the NW South China Sea Oceanologia Diatom Transgression and regression Sea-level changes Paleoclimate Holocene Beibu Gulf |
| title | A fossil diatom-based reconstruction of sea-level changes for the Late Pleistocene and Holocene period in the NW South China Sea |
| title_full | A fossil diatom-based reconstruction of sea-level changes for the Late Pleistocene and Holocene period in the NW South China Sea |
| title_fullStr | A fossil diatom-based reconstruction of sea-level changes for the Late Pleistocene and Holocene period in the NW South China Sea |
| title_full_unstemmed | A fossil diatom-based reconstruction of sea-level changes for the Late Pleistocene and Holocene period in the NW South China Sea |
| title_short | A fossil diatom-based reconstruction of sea-level changes for the Late Pleistocene and Holocene period in the NW South China Sea |
| title_sort | fossil diatom based reconstruction of sea level changes for the late pleistocene and holocene period in the nw south china sea |
| topic | Diatom Transgression and regression Sea-level changes Paleoclimate Holocene Beibu Gulf |
| url | http://www.sciencedirect.com/science/article/pii/S0078323422000586 |
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