SEISMOLOGY AND GEOLOGY ›› 1995, Vol. 17 ›› Issue (2): 149-157.

• Brief Report • Previous Articles     Next Articles

ELEVATION DISTRIBUTION OF MARINE SEDIMENTS DURING THE LATEST PREVATEST PREVAIL GLACIAL AGE AND TNEIR RELATIONSHIP TO EARTHQUAKES IN SOUTHEAST CHINA COAST——A QUESTION OF THE LOWEST GLOBAL SEA LEVEL DEEPER THAN 100m

Xu qihao1, Huang Zhengguo2   

  1. 1. Seisomological Bureau of Guangdong Province, Guangzhou 510070;
    2. Guangzhou Institute of Geography, Chinese academy of Science, Guanzhou 510070
  • Received:1992-08-31 Revised:1994-09-30 Online:1995-06-07 Published:2009-11-25

东南沿海末次盛冰期古海平面标志与地震的关系——100m以下最低海平面问题质疑

徐起浩1, 黄镇国2   

  1. 1. 广东省地震局, 广州, 510070;
    2. 中国科学院广州地理研究所, 广州, 510070
  • 基金资助:
    地震科学联合基金资助(91161)

Abstract: The littoral sediments during the latest prevailing age(21~14kaB.P.)along southeast China coast aredistributed between 3 8m above sea level and-50m below sea level.There is an evi-dence that strong earthquakes changed the original position of this sediment so that it was dis-persed at different elevations. The degree of dispersion corresponds to the intensity of earthquake──the more the dispersive marine sediments in elavation,the stronger the earthquakes.Therefore the sea level in that period was not at 100m below the present sea level,i.e.-100m.A subsidence of the crust or earthquakes.

Key words: Sea-level change, Glacial epoch, Crustal movement, Southeast China coast

摘要: 东南沿海末次盛冰期(21~14kaB.P,)滨海相沉积垂相分布多在海拔38~-50.8m的范围内,以正向分布(海平面附近及以上)、正负向混合分布及负向(海平面以下)分布在断块交界区或其附近,是强震的主要发生地。在滨海相沉积垂向分布愈离散的区段,其地震活动性也愈强,本研究地区不存在末次盛冰期-100m以下的最低海平面,那些局部在外陆架海底发现的-100m以下的滨海相沉积,可能与地壳呈长趋势下沉作用有关。

关键词: 海平面变化, 冰期, 地壳运动, 东南沿海