海南岛保亭地区南好组的地质时代  

AGE OF THE NANHAO FORMATION OF BAOTING AREA, HAINAN ISLAND

作　　者：张仁杰[1] 胡宁[1] 姚华舟[1] 冯少南[1] 

机构地区：[1]国土资源部宜昌地质矿产研究所,湖北宜昌443003

出　　处：《地层学杂志》2002年第2期101-105,130,共6页Journal of Stratigraphy

基　　金：国家自然科学基金 ( No.49772 0 94) ;地质行业科技发展基金( HY97982 0 );中国科学院南京地质古生物研究所现代古生物学;地层学开放研究实验室研究基金 ( No.0 13119)

摘　　要：海南岛保亭地区南好组选层型剖面新发现腹足类 H ormotoma、 Raphistomina ,腕足类 Ferganella?、Xinanospirif er ?、 strophomenids,竹节石 Tentaculites?和珊瑚 Favosites?等化石 ,表明其时代属志留纪而非早石炭世。以往报道该地区南好组的 Tenticospirif er、 Ptychomaletoechia等腕足类化石应为晚泥盆世 ,而非早石炭世。岛北部含有典型的早石炭世早期化石的岩关阶以碳酸盐岩及细碎屑岩交互成层为特征 ,与保亭地区南好组层型剖面岩性迥异 ,不宜用南好组表示 ,应另建新的组名。The discovery of fairly abundant fossils including gastropods Hormotoma, Raphistomina, brachiopods  Ferganella?, Xinanospirifer?, strophomenids, tentaculitid Tentaculites? and corals Favosites? in the lectostratotype of the Nanhao Formation, Baoting area, southern Hainan Island, indicates that the formation refers to Silurian, rather than Early Carboniferous in age. Furthermore, the Nanhao Formation will be abandoned, if there is no sufficient palaeontological evidence to prove the existance of Lower Carboniferous Series at that area. On the other hand, the Lower Carboniferous Series of the northern Hainan Island consists mainly of the carbonate and clastic rocks. Hence, the Nanhao Formation has to be rejected there. Again, it is reasonable to nominate a new formation name for that strata.

关 键 词：地质时代 海南岛 南好组 志留纪 石炭纪 腹足类 腕足类 碳酸盐岩 

分 类 号：P534.43[天文地球—古生物学与地层学] P534.45[天文地球—地质学]