广西隆或马平组的(竹蜓)类分带

<正> 广西隆林县隆或的马平组灰岩,与下伏黄龙组为整合接触,与上覆栖霞组由于第四纪坡积覆盖关系不清,厚215m。宜山马平组厚364m(赵金科,1947),德胜马平组厚481m(盛金章、侯祐堂等,1959),隆或马平组的厚度较小,但(竹蜓)类在地层上的垂直演化阶段仍是完整的,规律清楚。自下而上可分为四个(竹蜓)类化石带。 1.Montiparus带,2.Triticites带,3.Pseudoschwagerina带,4.Pseudofusulina带。各带特征详述如下: 1.Montiparus带 为最低的(竹蜓)类化石带,厚22m。以产旋壁蜂巢层发育较差的(竹蜓)

Zoning of the fusulinids of the Maping Formation of Longhuo,Guangxi

The Upper Carboniferous Maping Formation of Longhuo, Longling County overlies conformably the Huanglong Formation. There are some Quaternary deposists between the Maping Formation and the overlying Lower Permian Chihsia Formation. Four zones and two subzones of fusulinids can be recognized in ascending order as follows. 1. Montipartts Zone, including Obsoletes obsolettts Su-bzone and Montiparus huishuiensis Subzone; 2. Triticites Zone; 3. Pesudoschwagerina Zone; 4. Pscudofusulina Zone.According to the stratigraphical distribution of these fusulinids, the boundary between the Carboniferous and Permian may be placed at the upper limit of the Pseudoschwagerina Zone or at the ibase of the Misellina claudiae Zone of the Chihsia Formation.