地理科学 ›› 1987, Vol. 7 ›› Issue (2): 129-138,197.doi: 10.13249/j.cnki.sgs.1987.02.129

• 论文 • 上一篇    下一篇

海南岛沿海的全新世

张仲英, 刘瑞华   

  1. 广州地理研究所
  • 出版日期:1987-03-20 发布日期:1987-03-20

THE HOLOCENE ALONG THE COAST OF HAINAN ISLAND

Zhang Zhongying, Liu Ruihua   

  1. Guangzhou Institute of Geography
  • Online:1987-03-20 Published:1987-03-20

摘要: 海南岛沿海的全新统可划分为Q41、万宁组、Q42-1三亚组、Q42-2琼山组和Q43乐东组。明显反映出海侵一海的两个沉积旋回.其抱粉组合可划分为六个带,反映了气候由暖千一热湿的两次波动。与此相应,在海平面变化曲线上,反映出海面两次升一降旋回和三次高海面时期。最高海面时期与最热湿气候期相对应,为距今6000-5000年。距今6000年以来,海平面的变化幅度约为士6米。

Abstract: According to the new data from investigation of the Quaternary geology along the coast of Hainan Island, the paper puts forward that the Holoeene strata in this area can be divided into four formations i.e. Wanning formation (Q41), Sanya formation (Q42-1), Qiongshan formation (Q42-2) and Ledong formation (Q43). Aeeording to the analysis of spore-pollen, the Holocene can be divided into 6 spore-pollen zones, reflecting two cycles of climatic fluctuation from warm-dry to hot-humid. The most hot-humid period occurred in 6000-5000 years B.P. Based on the 14C dating of 38 samples representing the positions of ancient sea level,and dispelled the influence of tectonic movement, a curve of sea level change is established. It shows that there are two cycles of rise-drop of sea level and three periods of high sea level, the period of the highest sea level is 6000-5000 years B.P. According to the rate of rise or drop of sea level, four periods on the curve can be distinguished. The change amplitude of the sea level is about ?6 meters from 6000 years B.P.