摘要
在以往一直认为属于陆相地层的宁波组中,发现了大量有孔虫、介形虫和软体动物化石。这些化石资料表明,宁波组属于一套海陆过渡型沉积,可能为潮间带。在横向、垂向变化方面,海陆过渡相具有向河湖相演变的趋势。同时还讨论了当时海水环境的特点以及与新构造运动的关系。
Ningbo Formation has long been considered to belong to a terrestrial one, but recently a large number of foraminiferal, ostracoda and mollusca fossils have been discovered in it. These fossil date indicate that Ningbo Formation is marine-continental transitional sediment, maybe belonging to tidal zone. The marine-continental transitional facies tends to develop towards fluvial-lacustrine facies in transverse and vertical directions. This paper also discusses the features of seawater environments and the relationship with neotectonic movement.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1990年第3期59-66,共8页
Marine Geology & Quaternary Geology
关键词
宁波组
海生化石
海陆过渡相
Ningbo Formation marine fossil marine-continentaltransition sediment
