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Textural Analysis of Red Sediments from Visakhapatnam District, Andhra Pradesh

1980; Springer Science+Business Media; Volume: 21; Issue: 1 Linguagem: Inglês

10.17491/jgsi/1980/210107

0974-6889

C. V. Raman, A. T. Rao,

Geochemistry and Geologic Mapping

The red sediments of Recent age confined to the slopes of hill ranges and along the coast of Visakhapatnam and Bhimunipatnam are classified into inland and coastal red sediments. The textural analysis reveals that the inland red sediments are poorly sorted with negative skewness, and the coastal red sediments are better sorted and positively skewed. Beach samples are well sorted Showing both positive and negative skewness. In the light of skewness patterns it is concluded that the coastal red sediments were laid down in a depositional environment, whereas inland red sediments belong to an erosional or non-depositional environment and further that these clastic red sediments are immature and have formed under a fluvial environment.