中文摘要：

对莱州湾东岸Y86孔岩芯，进行岩性、粒度、微体化石、孢粉组合的分析和^14C年代的测定．将该孔自下而上划分为五层。在此基础上，详细讨论本区全新世海侵以来三个主要地质事件：8～7kaB．P．全新世海侵层与陆相层之间的不整合沉积间断地质事件；在7～6kaB．P．海侵范围达到最大．气候温暖湿润．称中全新世温暖气候事件；随后，在和4．5kaB．P．左右的明显降温事件。

英文摘要：

Based on the analysis of lithological features, microfossils, element abundance, spropollen and ^14C dating of the core Y86 samples, the stratigraphic division of core Y86 in the coastal plain in the east of Laizhou Bay is expounded in this paper. And on the above basis, three major geological events in the area are discussed in detail： the age and features of the interface of sedimentary interruption in the early Holocene there was a sedimentary interruption event in 8-7Ka B. P. ;about 6Ka B. P. in this area the range of the transgression reaches the maximum and the climate was warm and humid, therefore it is called the Holocene warm and humid climate event ; and then climatic decline event dated 4.5 Ka t3. P. is found in this area.