末次冰期盛期长江入海流路探讨
Tracing the Changjiang River’s flowing route entering the sea during the last ice age maximum
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摘要: 通过对现代长江口外东海内陆架和外陆架三条地震剖面的地层和埋藏地貌分析,并经与相关钻孔和现代长江三角洲第四纪研究资料对比,在东海陆架研究区内未发现末次盛冰期时古长江沉积和古河谷,前人所称之长江古河谷实际上是现代潮流水道.认为当时长江很可能未曾由研究区流经东海陆架入冲绳海槽Abstract: Based on the stratigraphic and buried geomorphic analysis of three seismic profiles located in the inner and outer shelves of the East China Sea out of the present Changjiang Rivers mouth,and contr asting with some relevant geologic cores and Quaternary researches on the modern Changjiang River Delta,it is found that there are no paleosediments and paleo channels of the Changjiang River formed in the lasticeage maximum in the study area.The paleo channels of the Changjiang River as which former researchers were considered are actually present tidal chan-nels.There fore,probably the Changjiang River did not flow by the East China Sea shelf and enter the Okinawa Trough during that period.
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Key words:
- lasticeage /
- Changjiang River /
- East China Sea shelf /
- flowing route
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任美锷,曾成开.论现实主义原则在海洋地质中的应用[J].海洋学报,1980,2(2):94～105. 朱永其东海陆架地貌初步研究[A].东海研究文集[C].北京:海洋出版社,1984 65～70 袁迎如东海大陆架晚更新世晚期长江河口[J].海洋学报,1992,14(6):85～89 焦北辰.中国自然地理图集[Z].北京:地图出版社,1998.60 杨子赓中国东部陆架第四纪时期的演变及其环境效应[A].中国海陆第四纪对比研究[M].北京:海洋出版社,1991 5～11 秦蕴珊,赵一阳,陈丽容,等.东海地质[M].北京:科学出版社,1987.205～210 LIU Zhen-xia, BERNE Serge, SAITO Y, et al. Quaternary seismic stratigraphy and paleoenvironments on the continental shelf of the East China Sea[J]. J of Asia Earth Sciences, 2000, 18:441～452. 黄慧珍,唐保根,袁迎如,等.长江三角洲沉积地质[M].北京:地质出版社,1996 244. 黄庆福,苟淑铭,孙维敏,等.DC-2孔岩心地层划分[J].海洋地质与第四纪地质,1992,4(1):11～16 李从先,张道建晚第四纪长江三角洲高分辨率层序地层学的初步研究[J].海洋地质与第四纪地质,1996,16(3):13～24. 金翔龙.东海地质[M].北京.海洋出版社,1992 513 XU Xue-dong, MOTOYOSHI Oda. Surface-water evolution of the eastern East China Sea during the last 36 000 years[J].Marine Geology, 1999, 156:285～304. 夏东兴.末次冰期黄河解体事件初探[J].海洋与湖沼,1996,27(5):511～517 -
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