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首次通过对浙江象山爵溪镇下沙、大岙和岱山大长涂岛小沙河3个中全新世海滩岩剖面进行以动物群分析为基础。应用δ~18O和~14C等手段相结合的综合研究,初步分析了浙江沿海中全新世的古气候、古环境。认为海滩岩中热带贝类的出现是中全新世时气候变暖的结果。当时热带向北扩展到了浙江中北部地区,可分为3个暖期:6040aBP前、5860~3218aBP和2875~2770aBP,其中5860~3210aBP较暖,它又可分为:5860~5490aBP,5490~4110aBP和3765~3210aBP3个阶段,以5490~4110aBP为最暖期,由δ~18O计算的古气温约比现今当地高5~6℃。还由微量元素等特征推测了当时的古环境。
For the first time, based on fauna analysis, the three middle Holocene beach rock profiles of Xisha, Dazhu and Xiaoshahe of Daochu Tu Island, Xiangshan, Zhejiang Province, are based on fauna analysis. Based on the comprehensive study of δ ~ 18O and ~ 14C, the paleoclimate and palaeoclimate in the mid-Holocene along the coast of Zhejiang were analyzed preliminarily. It is believed that the appearance of tropical shellfish in beach rocks is the result of warming during the Holocene. At that time, the tropical area extended northwards to the middle and northern part of Zhejiang Province. It can be divided into three warm periods: before 6040aBP, 5860 ~ 3218aBP and 2875 ~ 2770aBP, of which 5860 ~ 3210aBP is warmer and can be divided into 5860 ~ 5490aBP and 5490 ~ 4110aBP And 3765 ~ 3210aBP3 stages, 5490 ~ 4110aBP is the warmest, and the paleo-temperature calculated by δ ~ 18O is about 5 ~ 6 ℃ higher than the present day. Also by the trace elements and other characteristics of the ancient environment was speculated.