渤海海峡和辽东半岛海岸带黄土中的古生物化石的地质意义

GEOLOGICAL SIGNIFICANCE OF PALEO-NTOLOGICAL FOSSILS IN COASTAL LOESS IN THE BOHAI STRAIT AND LIAODONG PENINSULA

本文通过对庙岛的大黑山岛黑石沟、北庄剖面及辽东半岛金州大魏家、于家崴子四个黄土剖面中的软体生物、微体生物化石特点、来源与分布的分析，探讨了胶、辽半岛海岸带黄土的物源、分布规律以及垂向剖面上古生物化石的丰度变化与古气候、古海面之间的关系。

In this paper,mollusk and micropaleontological fossils(radiolaria,planktonicforaminifera,benthic foraminifera,Ostracoda)in four profiles respectively fromHeishigou and Beizhuang in Miaodao Islands and Daweijia and Yujaweizi in Jinzhou,Liaodong Peninsula have been primarily analyzed and their characteristics of combina-tions as well as the surrounding factors have been studied on the basis of analytic re-sults.1.The mollusk fossils and the distribution characteristics of the combination in thecoastal loess are mentioned.2.The combination characteristics and the law of distribution in the micropaleon-tological fossils in the coastal loess are expounded.3.The material sources of the coastal loess accumulations have been analyzed bymeans of organism fossil shells.4.By observing micropaleontological fossils,we have discussed distribution charac-teristics of coastal loess in different morphologic units. 5.We have studied paleoclimate change and sea level change through changes inquantitative distribution of the micropaleontological fossils in the coastal loess.