SEISMICALLY INDUCED DEFORMATION STRUCTURES AND LOCATION OF THE ASSOCIATED FAULT OF THE 1993 KILLARI EARTHQUAKE, SOUTH-CENTRAL INDIA

Balaji Bhosle
Advanced Geological Consulting Services Private Limited, Pune-411057, Maharashtra, India , IN

Shrijib Patra
Advanced Geological Consulting Services Private Limited, Pune-411057, Maharashtra, India , IN

Naveen Shukla
Advanced Geological Consulting Services Private Limited, Pune-411057, Maharashtra, India , IN

Ravi Kumar Saini
Advanced Geological Consulting Services Private Limited, Pune-411057, Maharashtra, India , IN

Keywords: Deformation Structure, Faults, 3-D Digital Elevation, GIS modeling

Abstract

Evidence of earthquake-induced sedimentary structures formed by the devastating 1993 Killari earthquake
has been scarcely documented and studied. The evidence found in the Terna River valley in the form of well-preserved
soft-sediment deformation structures are presented here. The structures include slumps, convoluted bedding, folds,
flame structures, dykes and faults. The structures formed are favoured by the water-saturated state of the sediments
combined with several earthquake shocks.
The structures are studied within the twenty kilometer zone of the identified epicenter of the earthquake because it is
believed through studies that more conspicuous structures will be found in close proximity of the epicenter.
These features are interpreted as having been triggered by the recent series of earthquakes, thus providing a
paleoseismic record of the Terna Fault System. A three dimensional digital elevation model drawn from elevation data
using remote sensing-GIS techniques and two dimensional profiles gives indication of topographic breaks and
location of the inferred fault.

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