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Paleocene-Eocene Tropical Coastal Palynoassemblage from the Older Cenozoic Sediments of Ganga Basin with Records of Recycled Microfossils
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Palynological investigation has been undertaken with tile subsurface Cenozoic sediments of Ganga basin to establish biostraligraphy and environment of deposition. Samples from four bore holes viz. Puranpur, Matera, Gandak and Raxaul under study have yieldcd palynomorphs and other microfossils. Palynoassemblage recovered from the older Cenozoic sedimcnts of thc four bore holes has becn analyzed in this paper to ascertain the age and environment of deposition. Rich palynoasscmblage recovered i'rorn the Ganga basin sediments compare closely with the palynoassemblage recovered from Palcoccne-Eocene sediments of other Tertiary basins in India. Occurrence of triporate 'Normapolles' type pollen grains in the assemblage is additional significant record. The palynoassemblage suggests a predominantly tropical warm humid climate with coastal brackish water influence. In addition, reworked microfossils of early and late Paleozoic, Mesozoic ages have becn recovered in the lower Tertiary palynoassemblage.
Keywords
Palynoassemblage, Palaeocene-Eocene, Reworked Palynomorphs, Ganga basin.
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