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青岛近海古河道断面特征与古地理变迁关系研究
引用本文:陈正新,曹雪晴,黄海燕,董贺平,李绍全,尹延鸿. 青岛近海古河道断面特征与古地理变迁关系研究[J]. 沉积学报, 2009, 27(1): 104-110
作者姓名:陈正新  曹雪晴  黄海燕  董贺平  李绍全  尹延鸿
作者单位:国土资源部海洋油气资源和环境地质重点实验室,山东青岛,266071;青岛海洋地质研究所,山东青岛,266071;国土资源部海洋油气资源和环境地质重点实验室,山东青岛,266071;青岛海洋地质研究所,山东青岛,266071;国土资源部海洋油气资源和环境地质重点实验室,山东青岛,266071;青岛海洋地质研究所,山东青岛,266071;国土资源部海洋油气资源和环境地质重点实验室,山东青岛,266071;青岛海洋地质研究所,山东青岛,266071;国土资源部海洋油气资源和环境地质重点实验室,山东青岛,266071;青岛海洋地质研究所,山东青岛,266071;国土资源部海洋油气资源和环境地质重点实验室,山东青岛,266071;青岛海洋地质研究所,山东青岛,266071
基金项目:国土资源大调查项目(基),国家自然科学基金 
摘    要:通过对青岛近海1 561 km的高分辨率浅地层测量剖面解译,在多条剖面中发现研究区存在多期发育的古河道,虽然保存较完整的地层不多,但大部分河流亚相地层被保存。测年资料表明,这些河流多形成在37 000~11 000 a之间,河流床底最大埋深(海底起算)约-32 m,一般在-20~-28 m,最大单个河面宽约1 500 m。根据现在所见河道的轮廓形态,可分为六种类型:即发育有滩心洲的河道、平底河道、不对称河道、连续多期发育的河道、窄陡型河道和对称型河道。并对河流的形成机理和古地理特征作了初步分析。

关 键 词:青岛近海  浅层地震剖面  埋藏古河道  断面特征  形成机理
收稿时间:1900-01-01

Relationship Between River Cross Section Characters and Change of Ancient Geography of Offshore in Qingdao Bay
CHEN Zheng-xin,CAO Xue-qing,HUANG Hai-yan,DONG He-ping,LI Shao-quan,IN Yan-hong. Relationship Between River Cross Section Characters and Change of Ancient Geography of Offshore in Qingdao Bay[J]. Acta Sedimentologica Sinica, 2009, 27(1): 104-110
Authors:CHEN Zheng-xin  CAO Xue-qing  HUANG Hai-yan  DONG He-ping  LI Shao-quan  IN Yan-hong
Affiliation:Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao Shandong 266071
Abstract:Based on high resolution seismic profiles surface of offshore 1 561 km nearby Qingdao, we discovered that there were multi stage developed ancient river ways in this area and river sedimentary system was not well preserved in many stratums in the most of them only some of the river subfacies stratums are preserved. The character of river cross section to the east of 120°30′is relatively well preserved. The data of age measurement showed that these rivers were mostly formed 37 000~11 000 years ago, that the largest burial depth(from the bottom of modern sea to river bottom) of riverbed was about 32m and the usual burial depth was between 20~28 m and that the widest part of the river orientation was approximately 1 500 m. The river section can be divided into 6 types according to the present visible figures, which are watercourse developed with channel bar, flat base continuous multi stage developed, steep narrow, asymmetric. This paper also includes the general analysis of formation mechanism of rivers and ancient geography environment.
Keywords:Qingdao offshore  earthquake section of shallow stratum  buried ancient rivers channel  characters of section  mechanism of formation  
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