Early Paleogene larger foraminifera are widely known from Indian basins. A brief review of earlier studies from Indian basins is presented. The review indicates that some species reported earlier in this interval need taxonomic revision. Additional new data on age diagnostic foraminiferal species from the subsurface section is presented and illustrated in the study. Nearly 60 species including 2 new species (Alveolina lukashottingeri and Nemkovella bprkrishna) belonging to 15 genera are presented. Reports on many of these species are not yet known from this region. This study on larger foraminifers from the subsurface sections with stratigraphic ranges can serve as a useful reference wherein a larger foraminiferal assemblage recorded in a subsurface sample can be placed in the stratigraphic column with greater confidence. Based on the distribution of larger foraminifers, the prevalence of carbonates and associate facies deposition in the Indian basins can be correlated broadly to Tethyan Shallow Benthic Zones SBZ 3-4 (Thanetian, Late Paleocene, P4-P5; Ta1); SBZ 8-11; (Ypresian, early Eocene, P7-P9; Ta2) SBZ 14-15 (Lutetian, Middle Eocene, P11-P12; Ta3); SBZ 15-17 (Bartonian, Middle Eocene, P12-P14; Ta3) and SBZ 19-20 (Priabonian,Late Eocene, P16-P17; Tb).
Larger Foraminiferal Biostratigraphy of Early Paleogene Sections in India
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Early Paleogene larger foraminifera are widely known from Indian basins. A brief review of earlier studies from Indian basins is presented. The review indicates that some species reported earlier in this interval need taxonomic revision. Additional new data on age diagnostic foraminiferal species from the subsurface section is presented and illustrated in the study. Nearly 60 species including 2 new species (Alveolina lukashottingeri and Nemkovella bprkrishna) belonging to 15 genera are presented. Reports on many of these species are not yet known from this region. This study on larger foraminifers from the subsurface sections with stratigraphic ranges can serve as a useful reference wherein a larger foraminiferal assemblage recorded in a subsurface sample can be placed in the stratigraphic column with greater confidence. Based on the distribution of larger foraminifers, the prevalence of carbonates and associate facies deposition in the Indian basins can be correlated broadly to Tethyan Shallow Benthic Zones SBZ 3-4 (Thanetian, Late Paleocene, P4-P5; Ta1); SBZ 8-11; (Ypresian, early Eocene, P7-P9; Ta2) SBZ 14-15 (Lutetian, Middle Eocene, P11-P12; Ta3); SBZ 15-17 (Bartonian, Middle Eocene, P12-P14; Ta3) and SBZ 19-20 (Priabonian,Late Eocene, P16-P17; Tb).
Publication Mode |
Online |
---|---|
Publication Author |
A. Govindan |
Publication Language |
English |
Publication Type |
Conference Paper |
Publication Year |
2013 |
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