Devonian miospores and reworked acritarchs from Southeastern Georgia, U.S.A
| Autor: | Robert L. Ravn, Don G. Benson |
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| Rok vydání: | 1988 |
| Předmět: | |
| Zdroj: | Palynology. 12:179-200 |
| ISSN: | 1558-9188 0191-6122 |
| DOI: | 10.1080/01916122.1988.9989343 |
| Popis: | An unnamed subsurface unit penetrated by wells in southwestern Georgia (U.S.A.) has yielded a rich and diverse palynoflora consisting dominantly of Emsian/Eifelian miospores with a lesser component of acritarchs considered to be reworked from older sediments. Among the miospores present are Apiculiretusispora brandtii, Dictyotriletes subgranifer, Emphanisporites annulatus, Retusotriletes incomptus and Grandispora velata, species characteristic of Emsian‐Eifelian assemblages in Canada and northern Europe. The presence of such acritarchs as Domasia limaciforme and Cymbosphaeridium pilar suggests that much, if not all of the acritarch portion of the assemblages is recycled from Upper Silurian strata, which are known to be present both northward and eastward of the study area. The geographical position of the subsurface Devonian unit lies near the North American/African suture formed by the collision of the two continental plates during the Carboniferous. The similarity of the miospore assemblage to ... |
| Databáze: | OpenAIRE |
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