摘要
首次报道西太湖Ｗ１Ａ钻孔钙质超微化石，这一发现为研究西太湖成因及演化增添了新的古生物资料。钙质超微化石在西太湖的发现，证明大约１１２８０年前的全新世早期，西太湖湖盆曾遭受海侵，形成海湾环境。
This is the first report on Early Holocene calcareous nannofossils collected from HoleWIA in Western Taihu Lake. A total of 27 samples from Icm to 269cm below lake floorwere examined under a light microscope magnifying about 800 diameters. No calcareousnannofossils were found between Icm and 50cm in the hole, whereas the monospeciesGephyrocapsa oceanica was continuously present in the interval from 50cm to 269cm. Generally, the species abundance is lower, with 0.8 spedments per field of view, and thespecies preservation is moderate,with about 30%-60% of the observed G. oceant'ca possessing no recognizable bridges.
出处
《古生物学报》
CAS
CSCD
北大核心
1995年第6期758-760,共3页
Acta Palaeontologica Sinica
基金
中国科学院古生物与古人类学科基础研究特别支持费资助
关键词
全新世
钙质超微化石
西太湖
Gephyrocapsa oceanica
calcareous nannofossil
bay
Western Taihu Lake
