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Authors
Affiliations
1 Department of Geology, University of Pune, Pune-411 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 51, No 1 (1998), Pagination: 43-48
Abstract
Detailed measurements of a more than 55 m wide tract of the Chikshellikeri Limestone, immediately underlying the Muchkundi Quartzite were undertaken in the Kaladgi Basin. This sequence is constituted of 3218 measured laminations from more than 1550 mudstone - packstone couplet. They are interrupted by 57 horizons of Intraformational Limestone Breccias. The distribution pattern of these horizons within the sequence is evaluated within the framework of the depositional environments which yielded the limestone sequence and they are recognised as products of events of penecontemporaneous basin-floor instability. It is shown that disconformity separating the Bagalkot Group into two Subgroups (earlier attributed to two separate transgresive events) was formed as a result of reorganisation of the basin configuration in response to synsedimentary tectonics and not as a result of a second transgression of the contemporary sea.
Keywords
Sedimentology, Kaladgi Basin, Disconformity, Meso- Neoproterozoic, Basin Evolution, Karnataka.
