| 宁波沿海平原Z02孔第四纪地层及古环境演变 |
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| 引用本文： | 王攀,张培新,杨振京,董贤哲,宁凯,周庆胜. 宁波沿海平原Z02孔第四纪地层及古环境演变[J]. 应用生态学报, 2021, 32(2): 453-466. DOI: 10.13287/j.1001-9332.202102.009 |
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| 作者姓名： | 王攀 张培新 杨振京 董贤哲 宁凯 周庆胜 |
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| 作者单位： | 1.中国地质科学院水文地质环境地质研究所, 石家庄 050061;2.中国地质调查局第四纪年代学与水文环境演变重点实验室, 石家庄 050061;3.中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083;4.浙江省水文地质工程地质大队, 浙江宁波 315012 |
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| 基金项目： | 宁波市自然科学基金项目(2016A610011);中国地质科学院水文地质环境地质研究所基本科研业务费项目(SK202012)资助。 |
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| 摘 要： | 宁波沿海平原第四纪沉积物属于海陆交互沉积,记录了良好的古气候变化信息,是研究古气候冷暖变化、沉积物沉积特征的良好载体.对位于宁波沿海平原东南部的Z02孔进行14C和古地磁测年,根据钻孔岩性、孢粉组合、有孔类和介形类组合、粒度等环境替代指标特征,确定了 Z02孔第四纪地层划分,揭示了研究区第四纪以来的古环境演变信息.结果...
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| 关 键 词： | 古环境演变 第四纪地层 粒度 孢粉 有孔虫 介形虫 宁波沿海平原 |
| 收稿时间： | 2020-02-08 |
Quaternary stratigraphy and paleoenvironmental evolution of the Ningbo Coastal Plain revealed by core Z02 |
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| WANG Pan,ZHANG Pei-xin,YANG Zhen-jing,DONG Xian-zhe,NING Kai,ZHOU Qing-sheng. Quaternary stratigraphy and paleoenvironmental evolution of the Ningbo Coastal Plain revealed by core Z02[J]. The journal of applied ecology, 2021, 32(2): 453-466. DOI: 10.13287/j.1001-9332.202102.009 |
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| Authors: | WANG Pan ZHANG Pei-xin YANG Zhen-jing DONG Xian-zhe NING Kai ZHOU Qing-sheng |
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| Affiliation: | 1.Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China;2.Key Laboratory of Quaternary Chronology and Hydrological Environment Evolution, China Geological Survey, Shijiazhuang 050061, China;3.College of Geoscience and Surveying Engineering, China University of Mining & Technology-Beijing, Beijing 100083, China;4.Zhejiang Institute of Hydrogeology and Engineering Geology, Ningbo 315012, Zhejiang, China |
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| Abstract: | The Quaternary sediment in the Ningbo Coastal Plain was the deposit due to sea-land interaction, which recorded information of past climate changes. The region is therefore an ideal area to study paleoclimate changes and sedimentary characteristics. We determined the stratigraphic division and paleoenvironmental evolution based on 14C and paleomagnetic dating, along with detailed analyses of lithology, pollen assemblage, foraminifera and ostracodes assemblage, and grain size of sediment in core Z02 located in the southeastern Ningbo Coastal Plain. The results showed that the boundary between the Holocene and Upper Pleistocene in the core Z02 record was at 30.5 m, the boundary between the Upper and Middle Pleistocene was at 82.65 m, and the boundary between the Quaternary and Lower Cretaceous was at 90 m. The Middle Pleistocene section of the core contained few sediments, while the Lower Pleistocene section was completely missed. During the late Pleistocene, the hydrodynamic conditions experienced energy levels of medium to medium low to medium, and sedimentary facies changed from alluvial lake to overbank to river to lake to alluvial lake to lake to overbank. During the Holocene, the hydrodynamic changes experienced energy levels of medium low to low to medium, and the sedimentary facies changed from shoreland to shallow sea to shoreland lake. The Ningbo Coastal Plain had experienced tectonic uplift, weathering and erosion stage in the Early and Middle Pleistocene, from warm and humid to dry in the Late Pleistocene, and from warm and humid to dry and cool in the Holocene, as revealed by the core Z02 record. This study provided useful information in investigating past environmental changes in the subtropical coastal region of eastern China. |
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| Keywords: | paleoenvironmental evolution Quaternary stratigraphy grain size pollen foramini-fera ostracoda Ningbo Coastal Plain |
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