Informatics Publishing Limited

M. Ramkumar ¹, P. Sudha Rani ¹, M. S. Gandhi ¹, M. Pattabhi Ramayya ¹, V. Rajani Kumari ¹, K. V. S. Bhagavan ¹, A. S. R. Swamy ¹

Affiliations
1 Delta Studies Institute, Andhra University, Visakhapatnam - 530 003, IN

Abstract

Textural data of the sediments of Godavari delta indicate the control of energy over grain size and other statistical parameters. These parameters also explain the regional energy conditions, which are indicative of many sub-environments. The prime environmental factors viz. transportation, deposition and preservation vary in time and space, which in turn, produce variability as well as shared nature of grain size characteristics. Many sub-environments have similar depositional/energy regimes making their distinction a difficult task. It is also established that only groups of environments could be delineated, rather than individual environments, based on manual observations and discriminant plots of textural data.

Keywords

Texture, Grain Size, Statistics, Sedimentary Environments, Godavari Delta.

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J. Seetharamaiakh ¹, K. V. S. Bhagavan ¹, K. Nageswara Rao ²

Affiliations
1 Delta Studies Institute, Andhra University, Sivajipalem, Visakhapatnam - 530 017, IN
2 Dept of Geo-Engineering, Andhra University, Visakhapatnam - 530 003, IN

Abstract

Study of sequential toposheets coupled with recent field observations revealed that Penner river has progressively shifted its mouth towards north during the past 80 years. This may partly be due to neotectonic activity and partly due to the development of new features at the estuary mouth. The newly formed distributary is likely to be widened further in the near future and possibly affect the coastal villages adjacent to its course.

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