Question

Give a detailed account of stratigraphy of Dharwar craton.

19 Jan 2026
Answer :
Word Count : 516
The Dharwar Craton, located in the southern part of India, represents one of the oldest and most well-studied Archean cratonic terrains. Its stratigraphy provides crucial insights into early continental crust formation, tectonics, and the evolution of the early Earth. The Dharwar Craton is broadly divided into two major components: the Eastern Dharwar Craton (EDC) and the Western Dharwar Craton (WDC), each with distinct stratigraphic sequences and lithological assemblages. The basal units of the Dharwar Craton consist primarily of the metasedimentary and metavolcanic sequences collectively referred to as the Dharwar Supergroup. The stratigraphy here is generally divided into two main groups: the older Sargur Group and the younger Dharwar Supergroup proper. The Sargur Group, restricted mostly to the western part, represents the oldest supracrustal rocks, including volcanic and sedimentary rocks, which have undergone high-grade metamorphism. These rocks are predominantly komatiitic basalts, ultramafic flows, and banded iron formations, indicating an early Archean volcanic-sedimentary environment. Overlying the Sargur Group in the Western Dharwar Craton is the Dharwar Supergroup, which is subdivided into three major stratigraphic subdivisions: the Bababudan Group, the Chitradurga Group, and the
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