SEDIMENTOLOGICAL STUDIES AND PALAEOENVIRONMENT OF LOWER GONDWANA STRATA, NORTH OF GKOC MINE, KOTHAGUDEM COALFIELDS, TELANGANA, INDIA
Lower Gondwana sediments of south-central part of Pranahita-Godavari (PG) valley viz., Talchir, Barakar and Kamptee Formations were statistically analyzed for granulometry and heavy mineral assemblages. Fifteen samples were collected and analysed for granularity. Field characteristics of these litho units were used to depict the sedimentary facies which were grouped into five categories. Palaeoenvironment interpretations using granulometric data and heavy mineral assemblages showed that these sediments were deposited in a mostly fluviatile to glacio fluviatile environment sourced from a provenance of igneous and metamorphic terrain composed of granitoids, garnetiferous and micaceous schists and gneisses with moderate to moderately well-sorted sediments. By the evidence of fining upward sequences and presence of thick coal seams in the study area, it is interpreted that these sediments were deposited in a swampy and point-bar conditions of fluviatile to glacio fluviatile environment.
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