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    Holocene sea levels of Visakhapatnam shelf, east coast of India

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    J_Geol_Soc_India_44_685.pdf (278.7Kb)
    Date
    1994
    Author
    Rao, K.M.
    Rao, T.C.S.
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    Abstract
    The Holocene sea level changes in the shelf areas off Visakhapatnam was studied from sediment distribution pattern and shallow seismic profiling. Morphological features on the shelf indicate a Late Pleistocene regression down to about -130 m below the present sea level. A major stillstand of the transgressive sea was recorded at about -80 m where coarse carbonates and shallow water fauna predominate. During this period algal barrier reefs with reliefs varying from 2 to 8 m were developed between -85 m (10790 + or - 170 years B.P) and -100 m (12530 + or - 170 years B.P.). Buried reefs observed at about -60 m give a clue for a possible strandline at this depth. Coarse clastic sand patch having mean size of around 1.0 phi between -20 to -30 m suggests another strand line. The sea level rise during Holocene transgression seems to be discontinuous with temporary pauses
    URI
    http://drs.nio.org/drs/handle/2264/7375
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