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Geochronology, Geology, Geochemistry and Petrology
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IND - SS / 89 BG 177
Sample
Rock type
Rhyolite
Sampled at
1990-02-06
Sampled by
Priadi B.
Bibliography
Country
Indonésie
Region
Sulawesi
Zone
Tana-Toraja
Longitude
119.7922 DD 119° 47' 1''
Latitude
-3.0802 DD -4° 55' 0''
Altitude
0 m
Body of water
Comments
Whole rock K-Ar dating
Analysis 1
Reference
B2396-2
Method
K-Ar
Technique
Age
0.55 Ma
Age incertitude
70 Ka
Precision
Sigma
±1
K2O
3.54 %
Fused mass
2.36 g
40ArR/40ArT
17.68 %
40ArR
10-7cm3.g-1
36Ar
1 exp 10-9cm3
Comments
Mineral K-Ar dating
No data available
Major elements analysis
Analysis 1
Precision
0
SiO2
69.1
TiO2
0.42
Al2O3
14.37
Fe2O3
2.53
MnO
0.05
MgO
1.08
CaO
2.61
Na2O
3.83
K2O
3.54
P2OR
0.2
Total
100.09
Loss on ignition
2.36
Comments
Trace elements analysis
Analysis 1
Precision
0
Rb
184
Ba
905
Th
47.93
Nb
0
La
62.95
Ce
120
Sr
513
Nd
0
Sm
5.02
Zr
179
Eu
1.16
Gd
0
Dy
0
Y
0
Er
0
Yb
1.62
Sc
6
V
35
Cr
11
Co
5
Ni
4
Cu
Comments
Microprobe analyses
No data available
Isotopic analysis
No data available
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