| 杭州湾舟山群岛海域晚第四纪声学地层 |
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| 引用本文： | 陈俊兵, 刘龙龙, 吴振, 唐松华, 刘荣波, 张现霞, 张胜江. 杭州湾舟山群岛海域晚第四纪声学地层[J]. 海洋地质前沿, 2021, 37(12): 49-57. doi: 10.16028/j.1009-2722.2021.190 |
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| 作者姓名： | 陈俊兵 刘龙龙 吴振 唐松华 刘荣波 张现霞 张胜江 |
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| 作者单位： | 1.浙江省水文地质工程地质大队，浙江宁波 315000; 2.中国地质调查局烟台海岸带地质调查中心，山东烟台 264004; 3.山东省第四地质矿产勘查院，山东潍坊 261021; 4.中石化海洋石油工程有限公司，上海 200120; 5.山大华特卧龙学校，山东临沂 276000 |
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| 基金项目： | 中国地质调查项目“浙江舟山市等6幅1:5万综合地质调查”（DD20211586）；山东省地矿局海岸带地质环境保护重点实验室2021年度开放基金项目 |
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| 摘 要： | 利用在舟山群岛海域采集的高分辨率浅地层剖面和地质浅钻，对研究区晚第四纪地层结构进行了划分。根据界面识别标志，共划分出5个地震反射界面（T1、T2、T3、T5、TR）， 将基岩面以上地层划分为5个地震单元（SU 1、SU 2、SU 3、SU 4和SU 5）。根据浅地层剖面和地质钻孔对比，结合钻孔沉积相、AMS14C和OSL测年数据及古地磁分析结果，5个地震单元分别对应于MIS 1、MIS 2、MIS 3、MIS 5和中更新世及更早时期沉积。基于此建立了舟山群岛海域晚第四纪的地层格架，为分析研究区晚第四纪古环境沉积演化和沉积物“源-汇”过程提供了科学依据。
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| 关 键 词： | 杭州湾 晚第四纪 声学地层 地层框架 沉积环境 |
| 收稿时间： | 2021-07-16 |
SHALLOW ACOUSTIC STRATIGRAPHY OF THE LATE QUATERNARY IN THE ZHOUSHAN ISLANDS OF HANGZHOU BAY |
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| CHEN Junbing, LIU Longlong, WU Zhen, TANG Songhua, LIU Rongbo, ZHANG Xianxia, ZHANG Shengjiang. SHALLOW ACOUSTIC STRATIGRAPHY OF THE LATE QUATERNARY IN THE ZHOUSHAN ISLANDS OF HANGZHOU BAY[J]. Marine Geology Frontiers, 2021, 37(12): 49-57. doi: 10.16028/j.1009-2722.2021.190 |
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| Authors: | CHEN Junbing LIU Longlong WU Zhen TANG Songhua LIU Rongbo ZHANG Xianxia ZHANG Shengjiang |
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| Affiliation: | 1.Zhejiang Institute of Hydrogeology and Engineering Geology, Ningbo 315000, Zhejiang, China; 2.Yantai Coastal Zones Geological Survey, China Geological Survey, Yantai 264004, Shandong, China; 3.No.4 Exploration Institute of Geology and Mineral Resources, Weifang 261021, Shandong, China; 4.Sinopec Offshore Oil Engineering Co. Ltd., Shanghai 200120, China; 5.Shanda Huate Wolong School, Linyi 276000, Shandong, China |
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| Abstract: | Based on the high-resolution seismic profiles and borehole data acquired from the Zhoushan Islands, five seismic reflectors, named T1、T2、T3、T5、TR, are identified and five stratigraphic units, namely SU 1、SU 2、SU 3、SU 4 and SU 5 established for the late Quaternary sequences. Through the correlation between the shallow seismic profiles and the boreholes, combined with the analysis of sedimentary facies, AMS14C and OSL dating and paleomagnetic analysis of the cores, we infer that the five seismic units were formed in MIS 1, MIS 2, MIS 3, MIS 5, Middle Pleistocene and earlier sedimentary periods, respectively, and as the results, the stratigraphic framework of the Late Quaternary established in this paper has founded the scientific basis for revealing the sedimentary evolution of Late Quaternary paleoenvironments and the process of "sources to sink" of the sediments. |
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| Keywords: | Hangzhou Bay Late Quaternary shallow acoustic stratigraphy stratigraphic framework sedimentary environment |
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