摘要
海南岛石碌铁矿储量大、品位高,是我国目前最重要的富铁矿基地。过去数十年间虽然曾进行过大规模勘查、研究,但是由于以往没有在其间获得可靠的古生物依据,该铁矿的形成时代问题长期悬而未决。因此,这个与寻找重要矿产资源密切相关的地层时代问题备受国内地质界的重视。近年,我们再度研究了石碌铁矿的赋存层--石碌群,从中发现了晚前寒武纪宏观藻类化石,从而确定石碌铁矿的形成时代为晚前寒武纪(张仁杰等,1989)。本文研究的宏观藻类化石材料,系作者等1986年至1988年冬采自海南昌江县石碌铁矿区。
This paper deals with the macroscopic fossil algae from Bed 6 of the Shilu Group, Hainan Island. This flora consists of Chuaria circularis Walcott, Tawuia dalensis Hofmann, T. sinensis Duan and Shouhsienia shouhsienensis Xing. As compared with other Precambrian floras both at home and abroad, the Chuaria-Tawuia Assemblage from the Shilu Group is quite similar to that from the Liulaobei Formation of Anhui, indicating that, the Shilu Group, at least its Bed 6 may be equivalent to the Liulaobei Formation of Late Precambrian. Also mentioned and discussed in this paper are the biological affinities and categories of the macroscopic fossil algae, the characters of the two genera Tawuia and Shouhsienia, and the difference between the widespread species Tawuia dalensis Hofmann and T. sinensis Duan.
出处
《古生物学报》
CAS
CSCD
北大核心
1991年第1期115-125,161-163,共11页
Acta Palaeontologica Sinica
基金
国家自然科学基金
地质行业基金
