Climate change at the Triassic/Jurassic boundary: palynological evidence from the Furkaska section (Tatra Mountains, Slovakia)

摘要: The palynology of the Triassic/Jurassic boundary interval Furkaska section (Tatra Mts, Slovakia) was studied with respect to a major climatic change during that period. palynofacies is dominated by terrestrial particles, indicating shallow marine depositional environment. palynomorphs are fairly well-preserved and assemblage shows characteristic changes within interval: lower part characterized high abundance Ricciisporites tuberculatus. sudden increase in trilete spores, decrease Ovalipollis spp., last appearance Alisporites minimus Corollina first Concavisporites rhaetoliassicus, Cyatidites australis, Callialasporites dampieri, Pinuspollenites minimus, Platysaccus spp. Zebrasporites fibmriatus striking features for subdivision two palynomorph assemblages. detected spore shift interpreted display humidity most probably caused volcanic activity Central Atlantic Magmatic Province (CAMP) associated onset rifting Pangaea early Mesozoic times.