Middle to Late Mississippian and Early Pennsylvanian foraminiferal zonal scheme of South China ― a case study from the Youjiang Basin: biostratigraphic and palaeobiogeographic implications
Middle to Late Mississippian and Early Pennsylvanian foraminiferal zonal scheme of South China ― a case study from the Youjiang Basin: biostratigraphic and palaeobiogeographic implications
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华南密西西比中晚期和宾夕法尼亚早期有孔虫带状图——以右江盆地为例：生物地层学和古生物地理意义
DOI：
10.18261/let.56.1.6
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发表时间：
--
期刊：
影响因子：
1.5
通讯作者：
Ismael Coronado
中科院分区：
文献类型：
--
作者：
Chao Liu;Daniel Vachard;Pedro Cózar;Ismael Coronado
在右江盆地划分了10个有孔虫带：Pojarkovella带、Pojarkovella nibelis-Endothyranopsis compressa带、Cribrospira panderi-Eostaffella ikensis带、Climacammina带、Janischewskina delicata带、Eostaffellina decurta带、Bradyina cribostomata带、Eostaffellina actuosa-Eostaffellina protvaensis带、Plectostaffella带和Pseudostaffella antiqua带。这些带以连续的顺序跨越了从维森期中期到谢尔普霍夫期晚期的时间间隔，而在其之上，是巴什基尔早期中部的塞维罗克尔特阶亚期的最后一个特征带。这些带与中国其他有孔虫带进行了比较，特别是与中国南方的有孔虫带进行了比较，从而统一了该地区的有孔虫地层记录，并使这些地区的有孔虫带标准化。一些分类群的地层范围仍有争议，但维森-谢尔普霍夫阶和下上谢尔普霍夫阶的边界受到着名的世界性分类群的限制。中密西西比世下部（中维塞期至最早的晚期维塞期）的有孔虫与西欧描述的有孔虫组合更相似，而中密西西比世上部至晚期（即，最新的Viséan-Serpukhovian）更类似于俄罗斯地台的那些，因此，使用俄罗斯的分带方案和生物地层学比使用西欧定义的生物带更实用。
Ten foraminiferal zones are proposed in the Youjiang Basin (South China): Pojarkovella, Pojarkovella nibelis-Endothyranopsis compressa, Cribrospira panderi-Eostaffella ikensis, Climacammina, Janischewskina delicata, Eostaffellina decurta, Bradyina cribrostomata, Eostaffellina actuosa-Eostaffellina protvaensis, Plectostaffella and Pseudostaffella antiqua zones. These zones span the interval from the middle Viséan to the late Serpukhovian in a continuous succession, and above, a final zone characteristic of the Severokeltmian Substage in the middle part of the early Bashkirian. These zones are compared with other foraminiferal zones described from China, particularly with those from South China and allow to uniformize the foraminiferal stratigraphical records in the region, and to standardize the foraminiferal zones defined in those regions. The stratigraphical range of some taxa is still debated, but the Viséan-Serpukhovian and the lowerupper Serpukhovian boundaries are well constrained by well-known cosmopolitan taxa. Foraminifers during the lower Middle Mississippian (middle Viséan to the earliest late Viséan) are more similar to the foraminiferal assemblages described from Western Europe, whereas from the upper Middle to Late Mississippian (i.e., latest Viséan- Serpukhovian) are more similar to those in the Russian Platform, and thus, the use of the Russian zonal scheme and biostratigraphy is more practical than to use the biozones defined in Western Europe.