华南地质2024，Vol.40Issue(1)：56-62,7.DOI:10.3969/j.issn.2097-0013.2024.01.003
北非摩洛哥小阿特拉斯东段晚泥盆世法门期叠层石的发现
Discovery of the Late Devo-nian Famennian stromatolites in the eastern Anti-Atlas,Morocco,North Africa
摘要
Abstract
The Late Devonian strata at Fecht area in the eastern Anti-Atlas,Morocco,North Africa,could be divided into two units:ds3 and dh.The ds3 unit is a set of gray with purple-red thick to thin layered nodular detrital limestone with a thickness of about 1.3m,where stromatolites are observed,rich in crinoid stems and cephalopods,and locally associated with brachiopods and trilobites.The lower part of the dh unit is an inter-bedded layer of gray thin layer of argillaceous siltstone and silty shale,mixed with muddy limestone lenses;the upper part is a gray-green medium layer of fine sandstone,with ripple structures and abundant trace fos-sils and bivalves.The conodont biostratigraphy indicates that both units should be located in the Early Palma-tolepis marginifera zone of the Famennian.This article reports on the stromatolites of the Late Devonian Famennian in Morocco for the first time,indicating that after the Frasnian-Famennian mass extinction,micro-organisms flourished first and then followed by the recovery of skeletal organisms.关键词
叠层石/牙形石/法门期/晚泥盆世/小阿特拉斯东段/北非摩洛哥Key words
stromatolite/conodont/Famennian/Late Devonian/eastern Anti-Atlas/Morocco,North Africa分类
地质学引用本文复制引用
曾雄伟,何垚砚,王成刚,吴发富,危凯,王志宏..北非摩洛哥小阿特拉斯东段晚泥盆世法门期叠层石的发现[J].华南地质,2024,40(1):56-62,7.基金项目
商务部对外援助项目([2021]28) （[2021]28）
