CAJ | 학술논문

对采自莱州湾南岸的钻孔沉积物样品进行了粒度测试和分析。样品平均粒径介于3.3F~6.8F,以极细砂和粗粉砂为主,含有少量的黏土质；分选较差；偏度表现为正偏和极正偏；沉积物粒度表现为正态、正态-尖锐和尖锐,少数表现为平坦和极尖锐。粒度象图指示了历史时期持续高的初始沉积水动能和多种沉积环境的变化,粒度参数散点图反映了多种动能影响了沉积物的沉积改造,综合判别分析对沉积环境的限定,得到了莱州湾南岸沉积物受到河水径流、潮流、波浪等共同作用形成。沉积物总体反映了莱州湾南岸长时期处于河流相和三角洲相的沉积环境,少数较细的粒度表现可能与研究区的多期海侵过程相对应。结果表明了粒度的综合分析对渤海南部的沉积环境有良好的辨识,是判断沉积环境的重要指标。
대채자래주만남안적찬공침적물양품진행료립도측시화분석。양품평균립경개우3.3F~6.8F,이겁세사화조분사위주,함유소량적점토질；분선교차；편도표현위정편화겁정편；침적물립도표현위정태、정태-첨예화첨예,소수표현위평탄화겁첨예。립도상도지시료역사시기지속고적초시침적수동능화다충침적배경적변화,립도삼수산점도반영료다충동능영향료침적물적침적개조,종합판별분석대침적배경적한정,득도료래주만남안침적물수도하수경류、조류、파랑등공동작용형성。침적물총체반영료래주만남안장시기처우하류상화삼각주상적침적배경,소수교세적립도표현가능여연구구적다기해침과정상대응。결과표명료립도적종합분석대발해남부적침적배경유량호적변식,시판단침적배경적중요지표。
Sediment samples from the borehole Lz908 of the Laizhou Bay were employed here for the grain-size and sedimentary analyses. The results showed that the average grain size was 3.3~6.8Fwith poor sorted, fine skewed and Platykurtic, which means the grain sizes ranged from coarse silt to very fine sand. The sediments settled in the southern of the Laizhou Bay were controlled by the river, tide and wave, and the fluvial effect was the dominant factor. It is inferred that the sediments deposited in a deltaic environment.