Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

Rajesh Kumar Naik ¹, Ashutosh Naik ¹

Affiliations
1 Department of Earth Sciences, Sambalpur University, Jyoti Vihar Burla, Sambalpur 768 019, IN

Abstract

The metasedtmenrary assemblage of Sargipali area In western pat of Sundargarh district is considered to be the western extension of Gangpur sequence Detailed mapping reveals the assemblage to be composed of a variety of rocks like conglomerate, quartzite, banded biotite schist, quartz- biotite schist, calc-gneiss, limestone etc folded in the form of a large syncline The order of superposition of beds established on the basis of the sedimentary structures and analysss of structural data is found to be just the reverse of the order suggested by earlier workers.

Keywords

Structure, Stratigraphy, Revision, Sargipali Area, Sundargarh District, Orissa.

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Brahmananda Naik ¹, Ashutosh Naik ²

Affiliations
1 Department of Mining Engineering, Regional Engineering College, Rouikela, Sundargarh, IN
2 Department of Earth Sciences, Sambalpur University, Jyoti Vihar, Burla, Sambalpur, IN

Abstract

An unusual occurrence of magnetite pebbles of variable shapes and sizes is recorded in the matrix supported conglomerate band exposed around Silpunji, in the eastern part of Sundargarh district, Orissa. The metasediments (Chandiposh Group) with which the paraconglomerate band is associated, is intruded by 2809±12 Ma old Tamperkola Granite which suggests the conglomerate to be of Archaean period. Although Koira (Iron Ore) Group is very close to the Chandiposh Group, it is unlikely to be the source area for the magnetite pebbles, as Banded Iron Formation of Koira (Iron Ore). Group is dominantly haematitic in composition. The magnetite pebbles thus indirectly suggest the existence of a rock sequence other than Koira (Iron Ore) Group having iron ore bearing lithogic unit.

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Dhruba Mukhopadhyay ¹, Ashutosh Naik ²

Affiliations
1 Department of Geology, University of Calcutta Kolkata - 700 019, IN
2 Department of Earth Sciences, Sambalpur University Jyott ViharPO Sambalpur - 768 019, IN

Abstract

No Abstract.

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