Sporae-dispersae and correlation of Gondwana sediments in Johilla coalfield, Son Valley Graben, Madhya Pradesh

Abstract

The dispersed spores and pollen grains preserved in the sediments exposed along Johilla River Section, Ganjra Nala Section and in three bore-cores, viz., JHL-23, JHL-24, JHL-25, in Johilla Coalfield have been described. The rich miofloral assemblage consists of 58 genera and 126 species, out of which seven species are new on the basis of their morphological characters. These are - Callumispora paliensls, C. saksenae, Osmundacidites baculatus, Dentatispora mammoida, D. reticulata, Gondisporites reticulatus and Lunatisporites paliensis.
 On the basis of the composition of spores and pollen grains, it has been concluded that the South Rewa Gondwana Basin shows a broader relationship with equivalent strata in other basins of India. In general, the monosaccate pollen has a better representation in the Talchir as well as Barakar sediments which is suggestive of relatively cooler conditions than those in Damodar Valley. Six palynological zones have been identified on the basis of quantitative analysis.

Palynological analysis of Lower Gondwana sediments exposed along the Umrar River, South Rewa Basin, Madhya Pradesh, India

“…The apiculate trilete in association with Parasaccites have also been recorded in the Korba Coalfield (Bhardwaj & Srivastava, 1973); the Kauakoh Nala Section at Chirmiri Coalfield (Srivastava, 1980b) also shows dominance of Parasaccites, but does not contain zonate trilete taxon as in the Urnrar River Section. Similar type ofpalynoassemblages, with radial monosasccates have been recorded in zone-2 of the Karanpura Coalfield, Damodar Basin (Kar, 1973); Palynozone-3 ofRamagundam and Ramakrishnapuram area of Godavari Coalfield ; Palynozone-2 of Managuru Coalfield (Srivastava & Jha, 1992) and Palynozone -C of Johilla Coalfield (Tiwari & Ram-Awatar, 1989). A comparable palynoflora has also been recorded from Borehole-…”

“…Later, this palynotaxon was also reported from the Lower Karharbari sediments of the Chirmiri Coalfield at Paradol-Chirmiri Railway Cuttings (Srivastava, 1980b) and the NOIih Karanpura Coalfeild (Srivastava, 1980a; Honhe area). However, in the Lower Permian sequence of the Umaria Coalfield and its vicinity, the genus has been recorded in greater abundance (Srivastava & Anand-Prakash, 1984;Tiwari & Ram-Awatar, 1989). The above account shows that the coal bed exposed along the Urnrar River is an extension of the same group, i.e., Lower Karharbari Formation of Umaria coalfield.…”

Palynostratigraphy of sub-surface Lower Gondwana, Pali sediments, Sohagpur Coalfield, M.P., India

“…1992 (Text fig. I; zone-VI-B), as 5cheuringipolleniles barakarensis (Tiwari, 1973), Faunipollenites varius (Tiwari et al, 1989), Barakariles indicus (Bharadwaj & Tiwari. 1964), Microjoveolalispora joveolata (Tiwari & Singh, 1984) and Brevitrileles communis (Bharadwaj & Srivastava, 1969) are also recorded in the assemblages.…”

“…and the Umaria and Johilla coalfields (Srivastava & Anand-Prakash. 1984;Tiwari & Ram-Awatar, 1989). The FADs (first appearance datum) of Densipo//enilcs indicus (Bharadwaj,(962), Microjoveolalispora joveolala (Tiwari & Singh.…”

Palynostratigraphy, dating and correlation of coal bearing and associated sediments in Mamakannu area, Godavari Graben, Andhra Pradesh, India

“…In Son Valley, Assemblage-V of Bore core JHL-24, JHL-25 and Assemblage-I of Bore core UKD-8 also show high incidence of Parasaccites (see Tiwari & Ram-Awatar, 1987, 1989. Occurrence of Parasaccites in high percentage is known from Talchir Formation and Upper Karharbari sediments which are associated with the cold climate.…”