Record Details

Holocene marine transgression as interpreted from bathymetry and sand grain size parameters off Gopalpur

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Holocene marine transgression as interpreted from bathymetry and sand grain size parameters off Gopalpur
 
Creator Rao, K.M.
Rajamanickam, G.V.
Rao, T.C.S.
 
Subject Geology and Geophysics
Holocene
grain size
bathymetry
transgressions
pelagic sediments
ISW, India, East Coast
 
Description Grain size statistical parameters of the surface sediment samples collected from the innershelf off Gopalpur were calculated using graphic and moment methods. Fine-grained sand present up to 15 m water depth shows symmetrical skewness and good sorting. These are leptokurtic. The coarse-grained sand beyond 15 m water depth has positive or negative skewness and moderate sorting. These are platy kurtic. Bivariate plot of mean vs skewness indicates two types of sample spread, keeping approximately 2.3 Phi mean as the demarcating boundary suggesting the presence of dune and beach types of sands. The study of log-probability sub-populations further supports these two types of sand as dune with single dominant saltation and beach with two distinct saltation populations. CM patterns suggest the role of rolling and graded suspension. The irregularity observed in bathymetry coincides with difference in the nature of sands within and beyond 15 water depth. The behaviour of the grain size parameters and the associated bathymetric features suggest the presence of relict environments of dune and beach
 
Date 1995-06-24T10:01:49Z
2017-09-30T01:29:56Z
1995-06-24T10:01:49Z
2017-09-30T01:29:56Z
1989
 
Type Journal Article
 
Identifier Proceedings of the Indian Academy of Sciences (Earth and Planetary Sciences), vol.98; 1989; 173-181
0253-4126
http://drs.nio.org/drs/handle/2264/7206
 
Language en
 
Relation P Indian As-Earth
SCI
 
Publisher Indian Academy of Sciences, Bangalore