CAUVERY DELTA

VIBROCORE STATION # 1

 The vibrocore was taken into Vellar sand spit deposits at the delta front.  The total core length recovered was 42 inches.  The predominant lithology was sand and the core was slightly disturbed in the upper 15 inches of the section perhaps due to excessive pushing during penetration.  Gastropoda are present.

Depth

 

 

0"

x1-0

 

 

x1-1

 

 Description

Surface grab sample:  organic carbon: 0.102 wt %.  CaCO3:2%

sand: 96.69% M=2.67|Sd=0.39|Sk=-.01|Kr=1.27

Probable environment.

0-15 inches: distorted fine grained sand [mkg]

 

Probable environment.

Organic carbon=0.1wt %. CaCO3=0%.

Bulk mineral analysis. .
3"

 

 

 

 

 

 

 

 

 

  
8"

c/g1-1

 

 

 

 

 

 

 

 

 

  

Heavy mineral spectra. 

sand=99.64% M=2.5|Sd=0.43|Sk=-.13|Kr=1.01

fauna=0.01%|heavies=24.65%|lights=75.34%
13"

 

 

 

15"

 

 

 

 

 

 

  

 

 

 

15-27".  Medium grained sand with heavy mineral concentration.  A single large Gastropoda [mkg].
17"

 

 

 

 

 

 

 

 

 

 

  
23"

 

 

 

 

 

 

 

 

27"

 

  

 

 

 

 

 

 

 

 

Very thin laminated bedding with heavy mineral concentrations and layers of coarse sand particles [mkg]
29" g1-2

 

 

 

 

 

 

33"

 

 

 

 sand=98.82% M=2.26|Sd=0.56|Sk=-.17|Kr=0.94

 

Heavy mineral concentrations show crossed bedding in medium grained sands [mkg]

 

 

 

 

32-33". Heavy mineral laminations [mkg]
35" c1-2

 

 

x1-2

 

40"

 Heavy mineral spectra.

fauna=0.03%|heavies=13.35%|lights=86.64%

 

organic carbon=0 wt %. CaCO3=0%

Bulk mineral analysis. 

Probable environment.