摘要
对贵州盘县火铺剖面茅口组类分布规律的研究显示 ,尽管类 Yabeina及 Chusenella生存时代相同 ,并可见于同一剖面 ,但两者在具体产出层位上却具有互不共生的特点。利用多元统计分析方法对 Yabeina及 Chusenella分布层位的沉积环境进行了对比研究。结果表明 ,Yabeina生活在水动力条件较强的正常浅海、台地及水能量较高的近岸浅滩 ;Chusenella则主要适应于低能环境 ,生活在水动力条件较弱的清澈浅海。
Field investigation of stratigraphical distribution of fusulinaceans in the Maokou Formation of Panxian, Guizhou Province has suggested that the Yabeina and Chusenella did not coexist in the same horizon despite the overlapping in stratigraphical ranges. Results of a comparative study on the Yabeina and Chusenella bearing layers with multivariate statistical techniques have further demonstrated that the two genera occurred in different sedimentary environments. Yabeina usually existed in normal shallow marine and platform, or shoal environments characterized by relatively strong flow and high energy condition. On the other hand, Chusenella was adapted to weak flow and low energy condition and mostly occurred in clean shallow marine and restricted platform environments.
出处
《微体古生物学报》
CSCD
北大核心
2001年第1期29-33,共5页
Acta Micropalaeontologica Sinica
基金
国家自然科学基金资助项目!(No.49572075)研究成果的一部分
