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Title of Journal: Pure Appl Geophys

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Abbravation: Pure and Applied Geophysics

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Springer Basel

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DOI

10.1002/chin.199324349

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1420-9136

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Geophysical Investigation of Lithosphere Structure

Authors: H M I Prasanna W Chen D Gómez‐Ortiz
Publish Date: 2014/01/14
Volume: 171, Issue: 8, Pages: 1951-1962
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Abstract

This paper describes a method for interpreting the lateral changes in the geological structure of the lithosphere by iteratively calculating the spatial variation of a bottomtotop loading ratio We use Forsyth’s coherence method based on multitaper spectral analysis on overlapping window areas We discuss the geological findings and their comparison with existing geological interpretations for the Sri Lankan region The low thickness of the elastic plate in the Sri Lankan region suggests a high geothermal gradient The lithospheric geological structure beneath the Sri Lankan region is consistent with the main crustal units of Sri Lanka which belong to different ancient plates Together with interpretations based on metamorphic rock units our findings support the existence of thrust contact in the central highlands of Sri Lanka

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