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Geochronology, Geology, Geochemistry and Petrology
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PAC PO SO BO 133
Sample
Rock type
Basalte
Sampled at
Sampled by
R.BROUSSE
Bibliography
Country
Polynésie française
Region
Bora-Bora
Zone
Bora-Bora
Longitude
16.495333 DD 16° 29' 1''
Latitude
151.759667 DD 151° 45' 1''
Altitude
56 m
Body of water
Océan Pacifique
Comments
Whole rock K-Ar dating
Analysis 1
Reference
B2021-7
Method
K-Ar
Technique
Age
3.83 Ma
Age incertitude
0.19 Ma
Precision
Sigma
±1
K2O
1.64 %
Fused mass
1.0219 g
40ArR/40ArT
30.1 %
40ArR
2.03 10-7cm3.g-1
36Ar
exp 10-9cm3
Comments
Mineral K-Ar dating
No data available
Major elements analysis
Analysis 1
Precision
SiO2
46.9
TiO2
3.26
Al2O3
14.09
Fe2O3
12.42
MnO
0.17
MgO
5.23
CaO
10.95
Na2O
2.7
K2O
1.7
P2OR
0.75
Total
99.86
Loss on ignition
Comments
Trace elements analysis
Analysis 1
Precision
Rb
42
Ba
388
Th
Nb
La
Ce
Sr
680
Nd
Sm
Zr
Eu
Gd
Dy
Y
Er
Yb
Sc
V
330
Cr
60
Co
39
Ni
82
Cu
Comments
Microprobe analyses
No data available
Isotopic analysis
No data available
Map
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