摘要
本文论述阶叠状藻叠层石,柱轴与底面斜交的分离短柱状藻叠层石和短棒状层孔虫叠层石的形态与海侵方向、次数、幅度、盆地性质、盆底地形等沉积环境的关系。本区古生代底栖造礁沉钙藻对造架生物的镶盖和填隙粘结作用,形成有利成矿的礁环境。指出区内不同形态叠层石的分布及生物群落的演化,皆与西澳坎宁盆地同时代生物礁相似。
Several stromatolites with different shapes in the lew member of fianziling Formation of Upper Devonian in Fankou Mine have been discovered by the author in recent years. These fossils are of special significance for determining the sedimentary environment. This paper discuses the relationship between the shapes of the stromatolites and the sedimentary environment such as the direction, frequence and range of transgression and the feature of the basin. The stromatolites seen in this area are mostly of Palaeozoic benthons reef-building calcium algae and interstifial cohesion action. The cyclopean of them had formed on environment favorable for mineralization and reef-building. At last the author describes the distribution of stromatolites with different shapes and the evolution of the biota which are similar to the feature of barrier reef of the period in Canning West Australia.
出处
《沉积学报》
CAS
CSCD
北大核心
1990年第3期103-109,共7页
Acta Sedimentologica Sinica
