Petrographic appraisal of coals of sub-surface seams from Belampalli Coalfield, Godavari Valley, Andhra Pradesh

Authors

  • Omprakash S. Sarate Birbal Sahni Institute of Palaeobotany, 53 University Road, Lucknow 226007, India

DOI:

https://doi.org/10.54991/jop.2014.291

Keywords:

Sub–surface, Belampalli Coalfield, Maceral, Reflectance, Depositional environment

Abstract

The present paper incorporates a detailed information about the maceral composition and the rank (reflectance Ro mean %) assessment of eight sub–surface coal seams, viz. IB, IA, I, IIB, II, III, IV and V encountered in Bore–hole No. 561 from Belampalli Coalfield of the Godavari Valley. The mineral matter free (m.m.f.) maceral study has suggested that the seam IB contain vitrinite rich coal or vitric type of coal whereas, the seam IIB has inertinite affluent or fusic coal. However, the seams IV and V have shown almost similar proportion of vitrinite and inertinite maceral groups, thus their coal is of mixed type. The seams I and III are represented by vitric and mixed coal types, whereas, IA and II seams are marked by the presence of vitric, fusic and mixed coal types. Most of the coal seams in general have reached high volatile bituminous C rank, barring the basal portion of the seams IV and V which have reached high volatile bituminous B stage. Similarly, a wide range of variation in vitrinite reflectance (Ro mean%) 0.53–1.1% has been recorded in seam II and thus the coal is of heterogeneous nature, having reached high volatile bituminous C, B and A stage of rank. The facies model (based upon the maceral and mineral matter association) drawn for these coal seams has indicated that the depositional site has primarily experienced alternate oxic and anoxic moor conditions. Since the seams in Belampalli Coalfield have consistency in thickness, vitrinite and inertinite rich constitution, low mineral matter association and has shown wide range of rank (reflectance) variation, therefore, the study area has potential to emerge as a productive centre of economically viable and commercially exploitable Coalfield of the Godavari Valley in near future.

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References

Bhaskar Rao V, Murthy VSN & Venkateswarlu PD 1971. Gravity anomalies and tectonics on a part of Lower Gondwana Basin. Symposium on Gondwana Systems, Aligarh Muslim University: 148–156.

Bose U & Ramanamurthy BV 1977. Pattern of Talchir sedimentation in south India. IV International Gondwana Symposium, Calcutta I: 386–384.

Chandra S & Chandra A 1987. Vegetational changes and their climatic implications in coal–bearing Gondwana. Palaeobotanist 36: 74–86.

Glasspool IJ 2000. A major fire event recorded in the mesophylls and petrology of the Late Permian, Lower Whybrow Coal Seam, Sydney Basin, Australia. Palaeogeography, Palaeoclimatology, Palaeoecology 164: 164–373.

ICCP (International Committee for Coal Petrology) 1971. International Handbook of Coal Petrology – Supplement to 2nd Edition Centre de Researche Scientifique. Qual. Antole Paris, unpaginated.

ICCP (International Committee for Coal Petrology) 1975. International Handbook of Coal Petrology – Supplement to 2nd Edition Centre de Researche Scientifique. Qual. Antole Paris, unpaginated.

ICCP (International Committee for Coal Petrology) 1998. The new vitrinite classification (ICCP System, 1994). Fuel 77: 349–358.

ICCP (International Committee for Coal Petrology) 2001. The new inertinite classification (ICCP System, 1994). Fuel 80: 459–471.

King LC 1958. Basic palaeogeography of Gondwanaland during the deposition of Late Palaeozoic and Mesozoic eras – Quarterly Journal of Geological Society of London 114: 47–77.

King LC 1961. The palaeoclimatology of Gondwanaland during the Late Palaeozoic and Mesozoic eras. In: Nairn AEM (Editor)—Descriptive Palaeoclimatology, Interscience: New York: 307–331.

Kräusel R 1961. Palaeobotanical evidence of climate. In: Nairn AEM (Editor)—Descriptive Palaeoclimatology, Interscience: New York: 227–254.

Lyons PC 2000. Funginite and sclerotinite – two new macerals of inertinite maceral group. International Journal of Coal Geology 44: 95–98.

Navale GKB, Misra BK & Anand Prakash 1983. The microconstituents of Godavari coals, south India. International Journal of Coal Geology 3: 31–61.

Plumstead EP 1961. The Permo–Carboniferous coal measures of the Transvaal, South Africa – an example of the contrasting stratigraphy in the southern and northern hemisphere. – C. r. 4. Congr. Intern. Strat. Géol. Carbonifére, v.2, pp. 545–550, Maastricht.

Qureshy MN, Brahmam NK, Gadse SC & Mathur BK 1968. Gravity analysis and Godavari rift, India. American Bulletin 79: 1221–1230.

Raja Rao CS 1982. Coal resources of Tamil Nadu, Andhra Pradesh, Orissa and Maharashtra. Coalfields Andhra Pradesh. Bulletins of the Geological Survey of India, Ser. A., No. 45: 9–40.

Ramanamurthy BV 1979. Report on occurrence of a coal seam in the Kamthi Formation, from the Ramagundam area of the Godavari Valley Coalfield, and its stratigraphic significance. Geological Survey of India, Miscellaneous Publication No. 45: 89–93.

Sarate OS 2001. Biopetrological study of the coals from Belampalli Coalfield, Khairagura area, Godavari Basin, Andhra Pradesh, India. Proceedings of National Seminar on Recent Advances in Geology of Coal and Lignite Basins of India, Calcutta, 1997. Geological Survey of India, Special Publication No. 54: 189–202.

Singh MP & Singh PK 1996. Petrographic characterisation and evolution of the Permian coal deposits of the Rajmahal Basin, Bihar. International Journal of Coal Geology 29: 93–118.

Stach E, Mackowsky M–TH, Teichmüller M, Taylor GH, Chandra D & Teichmüller R 1982. Stach’s Textbook of Coal Petrology, 3rd Edition. Gebrüder Borntraeger, Berlin, Stuttgard, 535.

Taylor GH, Teichmüller M, Davis A, Dissel CFK, Littke R & Robert P 1998. Organic Petrology. Berlin, Gebrüder Borntraeger, pp, 704.

Teichmüller M 1950. Zum Petrographischen Aufbau und Werdegang der Weichbraunkohle (mit Berücksichtigung genetischer Fragen der Steinkohlenpetrographie). Geol. Jahrb., v. 64, pp. 429–488.

Teichmüller M 1962. Dia Genese der Kohle. Congr. Avan. Etudes. Stratigraph. Géol. Carbonifére, Compte Rendu, v.4, Heerlen, 1958, 3, pp. 699–722.

Thomas L 2002. Coal Geology: 1–384.

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Published

2014-12-31

How to Cite

Sarate, O. S. (2014). Petrographic appraisal of coals of sub-surface seams from Belampalli Coalfield, Godavari Valley, Andhra Pradesh. Journal of Palaeosciences, 63((1-2), 51–62. https://doi.org/10.54991/jop.2014.291

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