Palynomorphs from the Panchet group exposed in Sukri river, Auranga coalfield, Bihar

Banerji, J.; Maheshwari, H.K

doi:10.54991/jop.1973.936

Cited by 2 publications

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“…of the present investigation is comparable to similar assemblages reported from the Raniganj Coalfield (Assemblage III, Bharadwaj & Tiwari, 1977;Assem-blage IV, Tiwari & Singh, 1982; Assemblage R-IA, Tiwari & Singh, 1986), Talcher Coalfield (Tiwari et at., 1991), Nidpur beds of Son Valley (Tiwari & Ram-Awatar, 1990), Bijori sediments of Satpura Basin (Sarate & Patil, 1994), Wardha Valley (Palynozone 2, Srivastava & Bhattacharyya, 1996) Srivastava & Bhattacharyya, 1996) and Tamia Ghat section in Satpura Basin (Palynoassemblage B, Kumar, 1996). The present palynozone differs from the Strtatopodocarpttes-Klaustpollenttes assemblage (P-IA Assemblage, Tiwari & Singh, 1986) from Raniganj Coalfield, and the assemblage described from the Sukri River, Auranga Coalfield (Banerji & Maheshwari, 1975) in having a dominance of Falctsporttes and relatively lesser amounts of zonatetriletes. Palynozone III ofthe Iria Nala also differs from the Lunattsporttes -Verrucostsporttes assemblage of Mailaram area (Srivastava & Jha, 1990) and Densotsporites-Lundbladtspora assemblage of Budharam area (Srivastava &Jha, 1995), Godavari Graben, in having dominance of Falctsporttes and rare percentage of trilete spores.…”

Section: ~'contrasting

confidence: 51%

Palynology of Permian-Triassic sequence in Iria Nala, Tatapani-Ramkola Coalfield, India

Srivastava¹,

Anand-Prakash²,

Kar³

1997

JPS

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The Permian-Triassic sediments exposed along Iria Nala in the northern part of Tatapani-Ramkola Coalfield have been palynologically analysed. The palynological assemblage includes 42 genera and on the basis of quantitative dominance three assemblage zones have been distinguished in ascending order: (i) Densipollenites magnicorpus zone, (ii) Crescentipollenites fuscus zone and (iii) Falcisporites stabilis zone. The first two palynoassemblage zones are restricted to the coal, carbonaceous shale, sandstone sequence (= Raniganj Formation) which is overlain by a khaki shale bed rich in Schizoneura gondwanensis.The lithological succession above this bed contains greyish/khaki green splintery shale and sandstone (=Panchet Formation). These shales have yielded the third palynoassemblage zone marked by Falcisporites stabilis, Playfordiaspora cancellosa and Klausipollenites schaubergeri. The Permian - Triassic boundary lies above the Schizoneura gondwanensis bed between the second and third palynozones. The transition is marked by the decline in the frequency of Crescentipollenites followed with the increase of non-striate group represented by Falcisporites. The onset of Triassic sedimentation is also marked by the presence of khaki shales which closely compares with the Panchet (Lower Triassic) sediments of the type area. Thus, the transition of palynoflora from Late Permian to Early Triassic is gradual and broadly conforms with the lithological changes. There appears to be a continuous sedimentation between the Permian and Triassic periods in this part of Tatapani-Ramkola Basin.

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Section: ~'contrasting

confidence: 51%

Palynology of Permian-Triassic sequence in Iria Nala, Tatapani-Ramkola Coalfield, India

Srivastava¹,

Anand-Prakash²,

Kar³

1997

JPS

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“…Gondwanic records of the Permian/Triassic boundary are restricted to India and south-eastern Africa: Auranga Basin, India (Banerji and Maheswari, 1975); Raniganj Basin, India (Tiwari and Tripati, 1987;Tiwari and Meena, 1988); Madagascar (Wright and Askin, 1987;Looy et al, 2005); Sri Lanka (Dahanayake et al, 1989); and Mombassa Basin, Kenya (Hankel, 1992).…”

Section: Lundbladispora-densoisporites Tetrads Significancementioning

confidence: 99%

Palynology of the la Veteada Formation (Lopingian) at Its Type Locality, Famatina Range, la Rioja Province, Argentina. Spores

2017

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In this systematic study of palynological assemblages from the upper part of the type section of the La Veteada Formation, 38 species of trilete and monolete spores are described and/or illustrated. Two new species are instituted: Lundbladispora verrucosa and Secarisporites triangularis, and a new combination Secarisporites imperialis (Jansonius) is proposed. Trilete spores comprise a dominant group in the analyzed palynoflora and show a reduced frequency from the base to the top of the section (from 32.2 to 14.5%). Cinguli-cavate spores (derived from herbaceous lycophytes) are dominant and represented by the genera Densoisporites, Lundbladispora and Secarisporites. Smooth and apiculate trilete spores (derived from ferns and sphenopsids) are represented by genera such as Calamospora, Punctatisporites, Granulatisporites, Brevitriletes, Cyclogranisporites and Osmundacidites. This upper section of the La Veteada Formation was deposited in fluvialhypersaline/brackish lacustrine environments under arid to semiarid climatic conditions. The areas surrounding these water-bodies dominated by evaporites were vegetated mainly by herbaceous lycopsids (Isoetales, Selaginellales, Lycopodiales) and ferns. Pteridophytes (Filicales, Zygopteridales), bryophytes and herbaceous sphenophytes were developed along the river courses and in the surrounding areas of freshwater bodies (ponds and small lakes) on the flood plain. The presence of Densoisporites complicatus, D. nejburgii, D. playfordii, D. solidus, Leptolepidites jonkeri, Lundbladispora brevicula, L. obsoleta, L. springsurensis, L. wilmotti, Ringosporites fossulatus, Secarisporites bullatus, S. imperialis and S. lacunatus confirm a late Permian (Lopingian) age for the upper La Veteada Formation. The palynofloras contain significant proportions of lycopsid tetrads; as is the case with many extra-Gondwanic strata of Lopingian/Early Triassic age.

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Palynomorphs from the Panchet group exposed in Sukri river, Auranga coalfield, Bihar

Cited by 2 publications

References 2 publications

Palynology of Permian-Triassic sequence in Iria Nala, Tatapani-Ramkola Coalfield, India

Palynology of Permian-Triassic sequence in Iria Nala, Tatapani-Ramkola Coalfield, India

Palynology of the la Veteada Formation (Lopingian) at Its Type Locality, Famatina Range, la Rioja Province, Argentina. Spores

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