Sections studied → Particulars of the sections↓ | Section CV-Calcutta (Figure 3) | Section K1-Kolaghat (Figure 4) | Section D1-DumDum (Figure 5) | Section B1-Barrackpore (Figure 6) |
Local (L) Zone | L. Biozone CV.BZ.V | L. Biozone | L. Biozone D1.BZ.III | L. Biozone B1.BZ.Ia |
Bioassemblage | Potamogeton-Typha- Poaceae-Fern- Concentricystes Rubinus (Type II-ribs smooth, surface psilate) Bellamya-Pila- Thiara-Lymnaea (Fresh water mollusc |
| Heritiera-Potamogeton- Typha-Poaceae- Fern-Gloeotrichia- Concentricystes rubinus (TypeII) Bellamya-Pila- Thiara-Lymanea- (Fresh Water Mollusc) | Heritiera- Potamogeton- Typha-Gloeotrichia- Poaceae- Fern-Concentricystes rubinus (Type Bellamya- Pila-Thiara-Lymnaea (Fresh Water Mollusc) |
Depth from Surface (cm) Depth from Present MSL (cm) | Surface to 550 - 600 +600 to 00.00 |
| Surface to500 +500 to 00 | Surface to 535 +600 to +65 |
Lithology | Peaty Clay, Grey Silty Clay, Peat I |
| Clay, Peat | Clay, Peaty Clay, Peat |
14C Date | Recent to 3470 to ca 5000 yr BP |
| Recent to 3470 yr BP to Ca 5000 | Recent to ca2000 to 3030 yr BP |
Local (L) Zone | L. Biozone CV.BZ.IV |
| L. Biozone D1.BZ.II | L. Biozone B1.BZ.Ib |
Bioassemblage | Heritiera-Bruguiera- Pandanus-Cheno- Amaranthus-Poaceae- Typha-Fern- Concentricystes rubinus (Type-I) Ribs Rough, Foveolate, Ornamentation at Polar Regions |
| Heritiera-Sonneratia- Pandanus Cheno-Amaranthus- Heliotropium-Typha- Fern-Concentricystes rubinus (Type-I) | Heritiera-Poaceae- Typha-Alternanthera- Fern-Gavialis gangeticus Chitra indica (Vertebrate Remains) |
Depth from surface (cm) | 600 - 800 |
| 500 - 650 | 535 - 650 |
Depth from Present Day MSL (Cm) | 00 to −200 |
| 00 to −150 | +55 to −50 |
Lithology | Soft Grey Clay With Wood Logs |
| Soft Grey Clay with Wood Logs | Peat |
14C Date | ca 5000 - 6210 yr BP |
| ca 5000 to 6175 yr BP | 3030 yr BP to ca 4000 yr BP |
Lithology
14C Date
Local (L) Zone
Bioassemblage | Soft Grey Clay with Wood logs
6210 yr BP to ca 6400
L.Biozone CV.BZ.II
Avicennia-Sonneratia- Rhizophora-Ceriops- Bruguiera-Excoecaria Heritiera-Fern-Ammonia | L.BiozoneK1.BZ.II
Avicennia-Sonneratia- Rhizophora-Ceriops- Bruguiera- Palaeocirrenalia Fern-Ammonia-Neritina violacea-Telescopium- telescopium-Geloina- Bankia-Martesia striata (Brackish water mollusc) | Soft Grey Clay with Wood logs
6175 -ca 6500 yr BP |
|
Depth from Surface (cm) | 1100 - 1210 | 400 - 550 |
|
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Depth from Present Day MSL (cm) | −500 to −610 | +100 to −50 |
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