地理科学

地理科学 ›› 1991, Vol. 11 ›› Issue (4): 361-369,392.doi: 10.13249/j.cnki.sgs.1991.04.361

• 论文 • 上一篇    下一篇

广州地区第四纪沉积的年代学研究

方国祥1, 李平日1, 郑建生2   

  1. 1. 广州地理研究所;
    2. 广东省地矿局水文工程地质二大队
  • 出版日期:1991-07-20 发布日期:1991-07-20
  • 基金资助:
    国家自然科学基金资助项目

CHRONOLOGY OF QUATERNARY SEDIMENTS IN GUANGZHOU AREA

Fang Guoxiang1, Li Pingri1, Zheng Jianshen2   

  1. 1. Guangzhou Institute of Geography;
    2. Second Team of Hydrogeologic and Engineering Geology, Geology and Mineral Bureau of Guangdong
  • Online:1991-07-20 Published:1991-07-20

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4 | 2

摘要： 本文根据75个14C 和22个热释光年代资料,央合沉积学、硅藻和微量元素分析,作者认为广州地区第四纪沉积年代可划分为七个阶段:Q2(距今70-20万年前)的冲积阶段;Q31(距今20-5万年)的风化剥蚀阶段;Q32-1(距今(5-3万年)的冲洪积阶段;Q32-2(距今3-1.8万年)的海进阶段;Q33(距今1.8-1.2万年)的风化与冲洪积阶段;Q41～Q42(距今1.2-0.25万年)的海进阶段;Q34(距今2500年)的海平面基本稳定与陆地前伸等阶段.

Abstract: According to 75 14C dating and 22 thermoluminescence data,in combination with the analysis of sedimentology,diatom and trace elements the authors consider that the age of Quaternary sediments in Guangzhou area can be divided into seven phases.(1) the alluvial phase in Q2(about 700-200 thousand yr.B.P.,(2) the weathering action and denudation in Q31 (about 200-50 thousand yr.B.P.,(3) the alluvial and diluvial phase in Q32-1 (about 50-30 thousand yr.B.P.,(4) the marine transgression phase in Q32-2 (about 30-18 thousand yr.B.P.,(5) the weathering action and alluvial-diluvial phase in Q33 (abaut 18-12 thousand yr.B.P.,(6) the marine transgression phase in Q41-Q42 (about 12- 2,.5 thousand yr B.P.,(7) the steady sea level on the whole and land expansion phase in Q43 (after 2500 yr.B.P.).