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Aspects of Romanian Early-Middle Jurassic palaeobotany and palynology. Part VII. Successions and floras

2006; Elsevier BV; Linguagem: Inglês

10.1080/10020070612330085a

1745-5391

Mihai Emilian Popa, H. A. Johanna, Van Konijnenburg-Van Cittert,

Geological Formations and Processes Exploration

Abstract The Jurassic floras of Romania occur in the Carpathian Mountains and in Dobrogea (Eastern Romania). In the South Carpathians, diverse and well preserved floras have been recorded since the middle of the 19th Century in the Resita, Sirinia, Presacina, Cerna-Jiu, Holbav and Cristian Basins. The ages of these floras range between Hettangian and Sinemurian, with representatives belonging to Bryophytes, Pteridophytes and Gymnosperms. Excellent preservation and diversity were recorded in Anina, in the central area of the Resita Basin, a possible fossile-Lagersta¨tte locality. The 3D collecting opportunities due to underground coal mining permitted detailed phytostratigraphical studies. These studies showed a floral change at the Hettangian-Sinemurian boundary, related to climate change. The Jurassic coal basins of the South Carpathians show both intramontainous and paralic features. The Resita Basin is a typical intramountainous depression basin, while the other basins are influenced by the marine real...