摘要
华南沿海的全新世海岸带碳酸盐胶结岩研究在成因、分类方面一直存有许多争议,并导致了对古海平面、构造升降、古气候等研究意义的诸多争议。本文通过成岩特征研究,将华南沿海的全新世海岸带碳酸盐胶结岩分为四类:海滩岩、砂丘岩、贝壳堤岩和硬壳灰岩,并对深圳西冲海滩岩、汕头广澳砂丘岩、韩江三角洲贝壳堤岩和海山岛硬壳灰岩等4个典型露头进行详细研究。在此基础上对这四类海岸带碳酸盐胶结岩的意义进行讨论,认为海滩岩在古海平面、海岸带演化和古气候方面具有重要研究意义,贝壳堤岩也具有古海平面(在某些条件下)和海岸线变迁的研究意义,而砂丘岩和硬壳灰岩在这些方面的研究意义较弱。
There are controversies over the origin and classification of the carbonate-cemented rocks developed in South China coasts,that brings about argument with regards to paleo-sealevel,tectonic uplift-subsidence,and paleo-climate.Based on the study of diagenesis,this paper classified these carbonate-cemented rocks into four categories： beachrock,dune rock,chenier,and coquinite.Typical outcrops including Xichong beachrock,Guang＇ao dune rock,Hanjiang River delta chenier,and Haishan Island coquinite were selected for in-depth discussion.It is suggested that beachrock is of important significance to researches on past sea-level,coastal evolution,and paleo-cliamate.Chenier is significant to past sea level（in some cases） and coastline migration.Dune rock and coquinite are not so informational as the others.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2010年第3期53-60,共8页
Marine Geology & Quaternary Geology
基金
国家自然科学基金项目(40976032)
NSFC-广东联合基金项目(U0933006)
关键词
碳酸盐胶结岩
海滩岩
古海平面
古气候
全新世
carbonate-cemented rocks
beachrock
dune rock
paleo-sealevel
paleo-climate
