Granulometric Studies of Beach Sediments between Ponnaiyar and Gadilam Rivers, Cuddalore, East Coast of India (original) (raw)

The granulometric studies of vertical sediments are generally reveals medium to fine grained nature of sediments. The standard deviation (δ1) indicates that the samples are well sorted nature. The graphic skewness (ski) indicates that they are near symmetrical and fine skewed. The kurtosis (Kg) values of the sediments vary in leptokurtic nature. All the samples show marginal marine conditions. During this period the sediments were deposited predominantly by Aeolian and beach process under shallow agitating environment and carried by turbidity action. Scanning microscopy of quartz grain size analysis and textural parameters along the Gadilam and Ponnaiyar River reveals of some micro features. There are three types of process environments viz. Beach (Littoral), subaqueous and low to high energy environments appear to be active the east coast of Tamilnadu. The significance of the present study is mainly focused on vertical size distribution, depositional process, environments and energy conditions of the deposits and morphological studies of quartz. Keywords: Beach Sediments, Grain size, SEM, Ponnaiyar, Gadilam.