Volcanism, Impacts, and Mass Extinctions: Causes and Effects

Deccan volcanic eruptions and their impact on flora: Palynological evidence
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Published:September 01, 2014
Palynological studies of the late Maastrichtian infratrappean and intertrappean sedimentary beds from various stratigraphic levels in the Deccan continental flood basalt of the Nand-Dongargaon Basin in central India show that infratrappean sediments (Maastrichtian C30n-C29r) are characterized by gymnosperm (Araucariacites, Classopollis, Cycadopites, Podocarpidites) and angiosperm (Cretacaeiporites, Compositoipollenites, Graminidites, Longapertites, Palmaepollenites) palynomorphs. A distinct floral turnover is observed in intertrappean sediments with the initiation of volcanic activity in the basin. At the lowest stratigraphic level, the earliest floral change is recorded by the appearance of angiosperm-pteridophyte–dominated association (Aquilapollenites, Azolla...
- algae
- Angiospermae
- Archosauria
- Asia
- assemblages
- basalts
- basins
- biostratigraphy
- biozones
- Cenozoic
- Chhindwara India
- Chordata
- correlation
- Cretaceous
- Deccan Traps
- Diapsida
- diatoms
- Dinoflagellata
- dinosaurs
- eruptions
- faunal studies
- flood basalts
- floral studies
- fossil localities
- fossil wood
- global
- Gujarat India
- Gymnospermae
- igneous rocks
- India
- Indian Peninsula
- Intertrappean Beds
- Lameta Formation
- landform evolution
- lithostratigraphy
- Madhya Pradesh India
- Maestrichtian
- mass extinctions
- Mesozoic
- microfossils
- Paleocene
- paleoclimatology
- paleoecology
- paleoenvironment
- Paleogene
- palynomorphs
- Peridinium
- Plantae
- Pteridophyta
- Reptilia
- Saurashtra
- Saurischia
- Sauropoda
- Sauropodomorpha
- sedimentary basins
- sedimentary rocks
- sediments
- Spermatophyta
- stratigraphic units
- Tertiary
- Tetrapoda
- Titanosauridae
- Upper Cretaceous
- Vertebrata
- volcanic rocks
- volcanism
- Infratrappean Beds
- Nand-Dongargaon Basin
- Pisdura Beds
- Ajanta Formation
- Khandala Ashta Beds
- Ninama River
- Anandvan Bed
- Daiwal Beds
- Sindhi Beds
- Dongargaon Hill Beds
- Ninama Hill
- Piraya Beds
- Polgaon Beds