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末次冰消期以来东海内陆架沉积物磁化率的环境意义

, PP. 91-97

Keywords: 东海内陆架,末次冰消期,磁化率,沉积环境,成岩作用

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Abstract:

对末次冰消期以来东海内陆架沉积物磁化率的影响因素及其蕴含的古环境信息进行了探讨。对位于浙闽沿岸泥质沉积中心附近的EC2005孔沉积物磁化率、岩性、粒度、常量元素、矿物以及AMS14C测年数据进行了综合分析,得出以下主要结论:EC2005孔沉积物磁化率的变化受多种因素的制约,不同层位的主要控制因素不同,60.20~28.06m层主要受岩性控制,28.06~8.40m层主要受早期成岩还原作用的影响,8.40m以上层位可能主要受人类活动的影响;岩心底部60.20~41.00m层磁化率的逐渐降低对应气候暖湿化、湖泊逐渐扩张的过程,这与以往磁化率高值对应于暖湿气候条件的观点不符,说明由于研究区不同,其蕴含的信息也会有所不同;对不同研究区磁化率作为气候代用指标进行应用时要慎重,应该对其指示意义进行深入探讨。

References

[1]  刘健, 秦华峰, 孔祥淮, 等. 黄东海陆架及朝鲜海峡泥质沉积物的磁学特征比较研究[J]. 第四纪研究, 2007, 27(6): 1031-1039.
[2]  秦蕴珊, 赵一阳, 陈丽蓉, 等.东海地质[M].北京: 科学出版社, 1987.
[3]  XU F, LI A, XU K, et al. Cold event at 5 500 a BP recorded in mud sediments on the inner shelf of the East China Sea[J]. Chinese Journal of Oceanology and Limnology, 2009, 27(4): 975-984.
[4]  徐方建, 李安春, 万世明, 等.东海内陆架泥质区中全新世环境敏感粒度组分的地质意义[J].海洋学报, 2009, 31(3): 95-102.
[5]  冯增昭, 王英华, 刘焕杰, 等. 中国沉积学[M].北京: 石油工业出版社, 1994.
[6]  WILLIAMSON D, JELINOWSKA A, KISSEL C, et al. Mineral-magnetic proxies of erosion/oxidation cycles in tropical maar-lake sediments (Lake Tritrivakely, Madagascar): paleoenvironmental implications[J].Earth and Planetary Science Letters, 1998, 155: 205-219.
[7]  金章东, 王苏民, 沈吉, 等.小冰期弱化学风化的湖泊沉积物记录[J].中国科学:D辑,2001,31(3): 221-225.
[8]  刘健, 朱日祥, 李绍全, 等. 南黄海东南部冰后期泥质沉积物中磁性矿物的成岩变化及其对环境变化的响应[J]. 中国科学:D辑, 2003, 33(6): 583-592.
[9]  ABRANTES F, LEBREIRO S, RODRIGUES T, et al. Shallow-marine sediment cores record climate variability and earthquake activity off Lisbon (Portugal) for the last 2000 years[J]. Quaternary Science Reviews, 2005, 24: 2477-2494.
[10]  KUMARAN K P N, NAIR K M, SHINDIKAR M, et al. Stratigraphical and palynological appraisal of the Late Quaternary mangrove deposits of the west coast of India[J]. Quaternary Research, 2005, 64: 418-431.
[11]  王心源, 吴立, 张广胜,等.安徽巢湖全新世湖泊沉积物磁化率与粒度组合的变化特征及其环境意义[J].地理科学, 2008, 28(4): 548-553.
[12]  王建, 刘泽纯, 姜文英, 等. 磁化率与粒度、矿物的关系及其古环境意义[J].地理学报, 1996, 51(2): 155-163.
[13]  葛剑雄. 中国人口史:第一卷.导论、先秦至南北朝时期[M]. 上海: 复旦大学出版社, 2002.
[14]  LIU J, ZHU R, ROBERTS A P, et al. High-resolution analysis of early diagenetic effects on magnetic minerals in post-middle-Holocene continental shelf sediments from the Korea Strait[J]. Journal of Geophysical Research, 2004, 109: B03103. doi:10.1029/2003JB002813.
[15]  ZHENG Y, KISSEL C, ZHENG H B, et al. Sedimentation on the inner shelf of the East China Sea: magnetic properties, diagenesis and paleoclimate implications[J].Marine Geology, 2010, 268: 34-42.
[16]  HOUNSLOW M W, MAHER B A. Source of the climate signal recorded by magnetic susceptibility variations in Indian Ocean sediments[J]. Journal of Geophysical Research, 1999, 104: 5047-5061.
[17]  葛淑兰, 石学法, 韩贻兵. 南黄海海底沉积物的磁化率特征[J]. 科学通报, 2001, 46(增刊): 34-38.
[18]  XIANG R, SUN Y, LI T, et al. Paleoenvironmental change in the middle Okinawa Trough since the last deglaciation: evidence from the sedimentation rate and planktonic foraminiferal record[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2007, 243: 378-393.
[19]  LIU J P, MILLIMAN J D, GAO S, et al. Holocene development of the Yellow River’s subaqueous delta, North Yellow Sea[J]. Marine Geology, 2004, 209: 45-67.
[20]  徐方建, 李安春, 肖尚斌, 等. 末次冰消期以来东海内陆架古环境演化[J]. 沉积学报, 2009, 27(1): 118-127.
[21]  LIU J P, LI A C, XU K H, et al.Sedimentary features of the Yangtze River-derived along-shelf clinoform deposit in the East China Sea[J]. Continental Shelf Research, 2006, 26: 2141-2156.
[22]  徐方建, 李安春, 李铁刚, 等. 末次冰消期以来东海内陆架沉积物地球化学特征及其古环境意义[J].地球化学, 2010, 39(3): 240-250.
[23]  安芷生, 吴锡浩, 汪品先, 等.最近130 ka中国的古季风:Ⅱ.古季风变迁[J].中国科学:B辑,1991,11: 1209-1215.
[24]  施雅风, 孔昭宸, 王苏民, 等.中国全新世大暖期的气候波动与重要事件[J].中国科学:B辑,1992,12: 1300-1308.
[25]  徐方建, 李安春, 徐兆凯, 等.东海内陆架沉积物稀土元素地球化学特征及物源意义[J].中国稀土学报,2009,27(4): 574-582.
[26]  ZONG Y. Mid-Holocene sea-level highstand along the southeast coast of China[J]. Quaternary International, 2004, 117: 55-67.
[27]  肖尚斌, 李安春, 刘卫国, 等. 闽浙沿岸泥质沉积的物源分析[J].自然科学进展, 2009, 19(2): 185-191.
[28]  ROWAN C J, ROBERTS A P, BROADBENT T. Reductive diagenesis, magnetite dissolution, greigite growth and paleomagnetic smoothing in marine sediments: a new view[J]. Earth and Planetary Science Letters, 2009, 277: 223-235.
[29]  DEAN W E, SCHWALB A. Holocene environmental and climatic change in the Northern Great Plains as recorded in the geochemistry of sediments in Pickerel Lake, South Dakota[J]. Quaternary International, 2000, 67: 5-20.
[30]  STUIVER M, GROOTES P M, BRAZIUNAS T F. The GISP2 δ18O climate record of the past 16 500 years and the role of the sun, ocean and volcanoes[J]. Quaternary Research, 1995, 44: 341-354.
[31]  HORI K, SAITO Y, ZHAO Q, et al.Sedimentary facies and Holocene progradation rates of the Changjiang (Yangtze) Delta, China[J].Geomorphology, 2001, 41: 233-248.
[32]  朱诚, 张强, 张芸, 等. 长江三角洲长江以北地区全新世以来人地关系的环境考古研究[J].地理科学, 2003, 23(6): 705-712.
[33]  王绍武, 黄建斌.全新世中期的旱涝变化与中华古文明的进程[J].自然科学进展, 2006,16(10): 1238-1244.
[34]  葛剑雄, 曹树基, 吴松弟. 简明中国移民史[M].福州: 福建人民出版社, 1993.

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