摘要
煤山D剖面长兴组的放射虫动物群的研究成果很少.对煤山D剖面的放射虫动物群进行了详细的鉴定、个体数量和种的数量的统计.结果表明:煤山D剖面长兴组的放射虫动物群的相对丰度、简单分异度与长兴期海平面变化具有耦合性:放射虫丰度、分异度较大的层位基本对应于长兴早期和长兴晚期2次最大海侵事件发生的层位.长兴早期放射虫的丰度和分异度较大(相对长兴晚期而言),这与长兴早期水体相对较深有关.煤山剖面放射虫动物群与海平面变化之间的这种耦合性为海平面变化的研究提供了依据.
There is relatively less research for radiolarian fauna in the Meishan D Section of Changxing County, Zhejiang Province. The radiolarian species in each sample from the Meishan D Section were identified, and the individuals in 0. 5 g dried samples （sieved through 300 meshes） were counted out. The research shows the abundance and diversity are closely related to sea level changes of Changhsingian age at the Meishan D Section. Where abundance and diversity reach higher values, the sea level would have peaked （e. g. maximum transgression surfaces）. The abundance and diversity of radiolarians from the early Changhsingian is greater than that of the late Changhsingian age, whieh coineides with the opinion that the marine water was deeper in the early Changhsingian than in the late Changhsingian. This conclusion provides evidence that radiolarian abundance and diversity are indieators for investigating sea-level ehanges.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
2006年第2期159-164,共6页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金重点项目(No.40232025)
国家自然科学基金项目(No.40502001).
关键词
放射虫
相对丰度
简单分异度
海平面变化
长兴期
煤山
radiolarian
relative abundance
simple diversity
sea-level change
Changhsingian
Meishan.
