摘要
本文对宁夏及邻区石炭纪植物化石进行了系统研究，共鉴定植物化石２４属６２种，讨论了植物群的特征，划分了４个植物组合，即（１）Ｃａｒｄｉｏｐｔｅｒｉｄｉｕｍｓｐｅｔｓｂｅｒｇｅｎｓｅ－Ａｒｃｈａｅｏｃａｌａｍｉｔｅｓｓｃｒｏｂｉｃｕｌａｔｕｓ组合；（２）Ｍｅｓｏｃａｌｕｍｉｔｅｓｃｉｓｔｉｆｏｒｍｉｓ－Ｐｅｃｏｐｔｅｒｉｓａｓｐｅｒａ组合；（３）Ｃｏｎｃｈｏｐｈｙｌｌｕｍｒｉｃｈｔｈｏｆｅｎｉｉ－Ｐａｒｉｐｔｅｒｉｓｋａｉｐｉｎｇｉａｎａ组台；（４）Ｌｅｐｉｄｏｄｅｎｄｒｏｎｐｏｓｔｈｕｍｉｉ－Ｎｅｕｒｏｐｔｅｒｉｓｏｖａｔａ组合．这４个植物组合的地质时代大致与西欧的杜内期－维宪期、纳缪尔期、维斯发期和斯蒂芬期相当，其代表岩组分别为前黑山组－臭牛沟组、靖远组、羊虎沟组和太原组．
The fossil plants studied in this paper were collected from the Carboniferous strata of Ningxia and adjacent regions. The flora is composed of 62 species in 24 genera, including.Lycopsida, Sphenopsida, Noeggerathiales, Filices, Pteridospermopsida, Cordaitopsida and Semina Gymnospermarum. According to the vertical distribution of the fossil plants, the flora may be divided into four plant assemblages in ascending order as follows: 1. CardiOPteridium spetsbergense-Archaeocalamites scrobiculatus assemblage; 2. Mesocalamites cistiformis-Pecopteris aspera assemblagel 3. Conchophyllum richthofenii-Paripteris kaipingiana assemblage ; 4. Lepidodendron posthumii-NeurOPteris ovata assemblage. The geological ages of the four plant assemblages may approximatively correspond to the Tournaisian to Visean, Namurian, Westphalian and Stephanian of West Europe. Their typical formations are the Qianheishan Formation, the Chouniugou Formation, the Jingyuan Formation, the Yanghugou Formation and the Taiyuan Formation respectively.
出处
《现代地质》
CAS
CSCD
1995年第1期1-10,T003,共11页
Geoscience
关键词
宁夏
石炭纪
植物群
植物组合
地层
Ningxia and adjacent regions, Carboniferous, flora, plant assemblage
