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苏州澄湖古泥沼洼地形成演化与全新世海侵研究
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摘要
本文以苏州澄湖古湖沼洼地沉积记录为研究对象,探讨在全新世气候和海平面变化背景下,湖底古湖沼洼地的形成演变过程及沉积记录所揭示的全新世海侵事件。通过对SC4孔沉积物的岩性观察,AMS14C测年,磁化率测定及粒度、有孔虫、有机质碳同位素、有机质等实验分析,结合历史文献和课题组其他钻孔的研究结果,本文获得以下初步结论:
     1.苏州澄湖湖底古湖沼洼地全新世以来主要经历了以下三个演化阶段:
     第Ⅰ阶段:全新世早期(10kaBP~7.0kaBP)以河流(沟谷)侵蚀为主,末次冰期形成的硬粘土平原随着沟谷系统的下切和扩大形成众多台地和沟谷相间的地貌景观,推测湖沼洼地就是这个时期形成的。
     第Ⅱ阶段:全新世中期(7.0kaBP~5.8kaBP)以堆积作用为主,平均沉积速率为0.39cm/a,古洼地及古河道被快速填充,并大致经历了由暴露地表向沼泽过渡—沼泽—受海水影响—受河流扰动演变过程。
     第Ⅲ阶段:全新世中后期(5.8kaBP~今)沉积环境以侵蚀作用为主,沉积缺失,后期澄湖形成演化,硬粘土平原和湖沼洼地演化为湖底的一部分,湖泊环境下,现代沉积缓慢。
     2、有孔虫分析证实,全新世期间该地区曾经发生过一次海侵,时间大约在全新世中期(相当于镇江海侵),与前人基于微古分析的研究结果基本一致。有孔虫的属种少、数量少、壳径小,由此表明此次海侵规模、范围均相对较小,可能仅在澄湖以东以及西部的河谷地带及地势低洼的湖沼地区分布。结合SC4孔有机质碳同位素分析与SC1孔孢粉分析,认为海侵发生在全新世高温期。
     3、全新世中期以来,澄湖湖底西侧湖沼洼地地势低洼,不利于人类生存,没有遗址分布,但在湖沼洼地周围发现了众多新石器聚落遗址,这可能与湖沼洼地既利于渔猎有利于农耕的地表环境有关。考古发现的席墟聚落遗址位于吴淞江入澄湖的汊流——席墟浦河口东侧,为地势相对较高的湖滩和湖底。这从一定程度上说明全新世海平面波动变化与海岸线变迁影响在很大程度上控制着本区文化遗址的迁移和扩散。
This paper takes Suzhou Chenghu as the research object, focusing on the paleo-limnological formation and evolution at Suzhou Chenghu and the Holocene transgression revealed by sedimentary records at the background of the climate and sea level changes at Holocene. Through a comprehensive analysis of the mud hole sediments of lithological depression at SC4, AMS14C dating, magnetic susceptibility, grain size, foraminifera, organic carbon isotope, TOC/N and organic matter, combined with historical documents and integrating the research of other drillings at Chenghu in Suzhou, the following preliminary conclusions were obtained in this paper:
     1. Since the Holocene, the paleo-limnological sedimentary environment has experienced the evolution of the following three main stages at Chenghu:
     The first stage:The depositional environment dominated by river (valley) erosion at the early Holocene (ten thousand~7.0kaBP). With the incised and expansion of valley system, the hard clay plains formed at the last glacial period developed numerous terraces and valley landscapes, which suggested that the paleo-limnological formed during this period.
     The second stage:the middle Holocene (7.0~5.8kaBP) sedimentary environment dominated by accumulation and the average deposition rate increased with about 0.39cm/a. The paleo-limnological and paleo-channel were filled quickly.And the paleo-limnological experienced the evolution of from the exposed surface to marsh-marsh-affected by sea water-disturbance by the river;
     The third stage:in the late Holocene (5.8kaBP~Present), the sedimentary environment was the erosion and the sedimentary was missing. Later, Chenghu formed and is evoluting, and the hard clay plain and the paleo-limnological were evolved into a part of the lake's bottom and the average deposition rate was low.
     2.Study on foraminifera confirmed that there is a transgression event occurred at the region during the Holocene. The time of Holocene transgression was in the mid-Holocene (the equivalent of Zhenjiang transgression), basic consisted with previous researches based on the microfossil analysis.The analysis shows that the scale and the scope of the middle Holocene transgression are relatively small and the transgression strata only exists in the east and west of Chenghu valley and the low-lying lake areas. Combined with organic carbon isotope analysis of SC4 and pollen analysis of SC1, mid-Holocene transgression occurred in the Holocene high temperature phase.
     3. Since the mid-Holocene, the west Chenghu quagmire was low-lying and was not conducive to human existence but a large number of Neolithic settlement sites were found near the paleo-limnological, and this should be related to the surface environment and this not only conducive to hunting and fishing but also to farming. And the Xixu archaeological settlement sites in the branch of Wusong River into the Chenghu-east side of Xixu Pu River with the relatively high-lying lake's beach and the lake's bottom.All of those show that the migration and proliferation of cultural sites can be explained by the Holocene sea-level changes and coastline changes to some extent.
引文
[1]. Buck K.F.& Olson H.C.,1999. Paleoenvironmental evidence for latest Pleistocene sea-level fluctuations on the New Jersey outer continental shelf:combining high-resolution sequence stratigraphy and foraminiferal analysis [J]. Marine Geology,154:287-304.
    [2]. Degens E T. Biogeochemistry of stable carbon isotope. In:G Eglinton,eds. Organic geochemistry [M].Berlin:Sprinrer-Verlag,1969.304-329.
    [3]. Demaison G J,Moore G T. Anixic environment and oil source bed genesis. [J].AAPGBulletin, 1980,64:1179-1209.
    [4]. Eddy J A. The PAGES Project:Proposed implementation plans for research activities. IGBP Report No.19. Stock~holm,1992.112
    [5]. Meyers P A,Ishiwatari R. The early diagenesis of organic matter in lacustrine sediments,Michael H,Engel & Stephen,Macko A, [J].Organic Geochemitry. New York:Plenum Press,1993:1985-209.
    [6]. Oldfield F.Environmental magnetism-personal perspective [J].Quaternary Science Review. 1991,10:73-83
    [7]. Robert P. Speijer, Birger & Schmitz,1998, A benthic foraminiferal record of Paleocene sea level and trophic conditions at Gebel Aweina,[J]. Egypt. palaeo,137:79-101.
    [8]. Smith B N,Epstein S. Two categories of 13C/12C ration for higher plants [J].Plant Physiology,1971,(47):380-384.
    [9]. Thompon R,Oldfield F.著 严尧基等编译.环境磁学.[M].地质出版社,1995
    [10].ThomponR,Oldfield F.Environmental Magnetism.[M]. London:Allen&Unwin,1986.Witliams
    [11].W.A.J.et.al.. Quaternary Environmengts,Ednard Arnold Ltd.,[M] Cambridge University Press,1993.
    [12].http://ghjh.mwr.gov.cn/gaikuang/article_th_gk_2000.asp.水利部规划计划司.太湖流域概况.2001
    [13].安芷生,符淙斌.全球变化科学的进展.[J].地球科学进展,2001,16(5):671-680.
    [14].畅莉,苏州澄湖全新世环境变化的沉积记录研究[D].华东师范大学硕士毕业论文,2008.
    [15].陈敬安,万国江.云南程海现代沉积物环境记录研究[J].矿物学报,2000,20(2):112-116.
    [16].陈满荣,王少平,俞立中.环境磁学及其在地理环境研究中的应用[J].云南地理环境研 究,2001,13(1):11-19.
    [17].陈希祥.关于长江三角洲第四纪海侵的一孔之见[J].地层学杂志,1996,20(4):291-294.
    [18].陈中原,洪雪晴,李山等.太湖地区环境考古[J],地理学报,1997,52(2):131-176。
    [19].陈中原.长江三角洲之沉降[J].火山地质与矿产,2001,22(2):95-101.
    [20].程东来,海平面变化理论的初步评价,[J].华中师范大学学报(自然科学版)1999,33(1),614~618.
    [21].程东来.全球变化与21世纪农业可持续发展.[J].经济地理,1997.17(2):119~123.
    [22].戴梁,苏州澄湖地区史前洪水事件的沉积记录研究[D].华东师范大学硕士论文,2010
    [23].杜建国.苏州东南部全新世沉积特征及海侵[J].江苏地质,1997,21(1):36-42.
    [24].符斌,叶笃正.全球变化和我国未来的生存环境[J].大气科学,1995,19(1):116-126.
    [25].复旦大学历史地理研究室.太湖以东及东太湖地区历史地理调查简报[J].历史地理,创刊号(1981年)上海人民出版社.187-194.
    [26].傅桦.全球气候变暖的成因与影响.[J].首都师范大学学报(自然科学版),2007,28(6):11-21.
    [27].付苗苗,苏州澄湖地区晚更新世沉积记录与环境变化研究[D].华东师范大学硕士论文,2009.
    [28].勾韵娴等.江苏建湖地区全新世生物群和古环境[J].第四纪研究.1992,3:203-215.
    [29].顾成军,戴雪荣,张海林,何小勤.巢湖沉积物粒度特征与沉积环境[J].海洋地质动态,2004,20(10):10-13.
    [30].韩友松等.胶州湾地区全新世海侵及其海平面变化[J].科学通报,1984,20:1255-1258
    [31].洪雪晴.太湖的形成和演变过程[J].海洋地质与第四纪地质.1991,11(4):87-96.
    [32].胡守云,邓成龙等.湖泊沉积物磁学性质的环境意义[J]..科学通过,2001,46(17):1491-1494.
    [33].胡守云,王苏民,APPELE,等.呼伦湖湖泊沉积物磁化率变化的环境磁学机制[J].中国科学,1998,28(4):334-339.
    [34].景存义.太湖的形成与演变[J].地理科学.1989,9(4):378-385.
    [35].景存义.太湖地区全新世以来古地理环境的演变[J].地理科学,1985,5(3):227-233
    [36].李长傅译.罗布泊考[J].新亚细亚月刊,1935,10(5):1-5.
    [37].李协.太湖东洞庭山调查记[J].科学,1926,11(12):1778-1784;
    [38].李智勇,洪雪晴.苏州角直第四纪地层划分[J].上海地质,2004,2:1-4.
    [39].李智勇.长江口第四纪地层划分及环境演变[D].华东师范大学硕士学位论文,2005.
    [40].刘春连,Rouhl,Hans-Joachina影响湖相沉积岩中有机碳分布的主要因素-以三水盆地为例.2001,19(1):113-116.
    [41].申洪源,朱诚,张强.长江三角洲地区环境演变与环境考古学研究进展[J].地球科学进展,2003,18(4):569-575.
    [42].沈吉,张恩楼,夏威岚,青海湖近千年来气候环境变化的湖泊沉积记录[J].第四纪研究.2001,21(6):508-513.
    [43].沈吉.湖泊沉积研究的历史进展与展望.[J].湖泊科学.2009,21(3):307-313.
    [44].施雅风,等.中国全新世大暖期气候与环境[M].北京:海洋出版社,1992.
    [45].施雅风,孔昭宸,王苏民等.中国全新世大暖期气候与环境的基本特征[M].中国全新世大暖期气候与环境,海洋出版社,1992,185-191.
    [46].施雅风,于革.40~30kaBP中国暖湿气候和海侵的特征与成因探讨[J]..第四纪研究,2003,23(1):1-11.
    [47].史凯,苏州澄湖地区晚第四纪海侵沉积记录研究[D].华东师范大学硕士论文,2009.
    [48].孙千里,周杰,肖举乐.岱海沉积物粒度特征及其古环境意义[J].海洋地质与第四纪地质,2001,21(1):93-96.
    [49].孙顺才,黄猗平.太湖[M].海洋出版社,1993.
    [50].孙顺才.太湖平原有全新世海侵吗?[J].海洋学报.1992,14(4):69-77.
    [51].谭其骧.中国历史地图集[M].地图出版社.1982:55-56.
    [52].陶樊立译,青海探险[J].地学杂志1910,1(6):1-7.
    [53].陶强,严钦尚.长江三角洲南部洮滆湖地区全新世海侵和沉积环境[M].长江三角洲现代沉积研究.华东师范大学出版社,1987.
    [54].同济大学海洋地质教研室.微体古生物学[M].同济大学海洋地质专业,1975.
    [55].汪品先,陈嘉树,刘传联等.古湖泊学译文集[M].海洋出版社,1991.
    [56].汪品先,闵秋宝,等.我国东部第四纪海侵地层的初步研究[M].1981,1.
    [57].汪品先,闵秋宝,等.我国东部第四纪海侵地层的初步研究[M].1981,1.
    [58].王建,黄巧华,柏春广,等.2.5Ma以来柴达木盆地的气候干湿变化特征及其原因 [J].地理科学,2002,2(1):34~38.
    [59].王开发,张兰玉,蒋辉,韩信斌.长江三角洲第四纪孢粉组合及其地层、古地理意义[J].海洋学报(中文版).1984年04期
    [60].王开发,张玉兰,叶志华等.根据孢粉分析推测上海地区近六千年以来的气候变迁[J].大 气科学.1987,2(2):139-144.
    [61].王秋良,谢远云,梅惠。湖泊沉积物中有机碳同位素特征及其古气候环境意义[J],安全与环境工程,2003,10(4):17-20.
    [62].王苏民,窦鸿身主编.中国湖泊志[M].北京,科学出版社:1998
    [63].王苏民.湖泊沉积的信息原理与研究趋势.见:张兰生.中国生存环境历史演变规律研究[J].北京,1993.22~31.
    [64].王张华,陈杰.全新世海侵对长江口沿海平原新时期遗址分布的影响[J].第四纪研究,2004,24(5):537-545
    [65].吴瑞金.湖泊沉积物的磁化率、频率磁化率及其古气候意义--以青海湖、岱海近代沉积为例[J].湖泊科学,1993,5(2):128-135.
    [66].肖晨曦,李志忠,粒度分析及其在沉积学中的应用研究[J].新疆师范大学学报:自然科学版.2006,25(3):118-123.
    [67].严钦尚,洪雪晴.长江三角洲南部平原全新世海侵问题[J].海洋学报,1987,9(6):744-752.
    [68].严钦尚,洪雪晴.长江三角洲南部平原全新世海侵问题.严钦尚地学论文选[M].上海科学技术文献出版社,1994.
    [69].严钦尚,许世远,等.长江三角洲现代沉积研究[M].华东师范大学出版社,1987:103-115.
    [70].杨怀仁,王强,杨达源.太湖827孔微体古生物研究及其环境变迁[J].海洋地质与第四纪地质.1988,8(2):67-76.
    [71].杨怀仁.环境变迁研究[M].南京:河海大学出版社,1996:230-239.
    [72].虞志英.长江三角洲新构造运动[D].华东师范大学地理系论文集.1959年,第三期
    [73].张成君,陈发虎,施祺等 西北干旱区全新世气候变化的湖泊有机质碳同位素记录-以石羊和流域三角城为例[J].海洋地质与第四纪地质,2000,20(4):93-97.
    [74].张卫国,俞立中,许羽.环境磁学研究的简介[J]..地球物理学进展.1995,10(3):95-105
    [75].张卫国.长江口潮滩沉积物环境磁学研究[D].华东师范大学博士毕业论文,2001
    [76].张玉兰.长江三角洲东缘地区全新世孢粉与古环境研究[J].海洋地质.2005,95(3):14
    [77].张振克,王苏民.中国湖泊沉积记录的环境演变:研究进展与展望.地球科学进展[J].地球科学进展.1999,14(4):417~420.
    [78].张振克,吴瑞金,王苏民.岱海湖泊沉积物频率磁化率对历史时期环境变化的反映[J].地理研究,1998,17(3):297-302.
    [79].张振克,吴瑞金.近8kaBP来云南洱海地区气候演化的有机质碳稳定同位素记录[J].海 洋地质与第四纪地质,1998,18(3)
    [80].赵宝成,王张华,李晓.长江三角洲南部平原古河谷充填沉积物特征及古地理意义[J].古地理学报.2007,9(2):217-226.
    [81].赵希涛,海平面变化的近其模式[J].地球科学进展.1989,3,67~77.
    [82].赵希涛,唐领余,江苏建湖庆丰部面全新世气候变迁和海面变化[J].海洋学报.1994,16(1)78~88.
    [83].赵钟媛,苏州澄湖古湖沼洼地沉积记录揭示的古环境意义[D].华东师范大学硕士论文,2010.
    [84].周德全.湖泊沉积记录与过去全球变化[J].矿物岩石地球化学通报,2006,25(3):260-265.
    [85].周晶,苏州澄湖湖底古河道充填沉积记录与环境变化研究[D].华东师范大学硕士论文,2009.
    [86].周开胜,孟翊等,长江口北支沉积物粒度特征及其环境意义[J].海洋地质动态。2005,21(11):1-7.
    [87].庄丽华,李铁刚,常凤鸣等.东海中陆架晚第四纪底栖有孔虫定量分析[J].海洋地质与第四纪地质.2004,24(1):43-50.

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