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Geochronology, Geology, Geochemistry and Petrology
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ASI - PH MNO / TUDELA
Sample
Rock type
Andésite
Sampled at
Sampled by
Bibliography
Magmatic response to abrupt changes in geodynamic settings : Pli
Country
Philippines
Region
Mindanao / Central Mindanao
Zone
Western Portion : Tudela town
Longitude
123.8 DD 123° 47' 1''
Latitude
8.25 DD 8° 15' 0''
Altitude
0 m
Body of water
Océan Pacifique
Comments
Whole rock K-Ar dating
Analysis 1
Reference
B3020-9
Method
K-Ar
Technique
Age
0.29 Ma
Age incertitude
40 Ka
Precision
Sigma
±1
K2O
2.47 %
Fused mass
0.8 g
40ArR/40ArT
6.1 %
40ArR
1.63 10-7cm3.g-1
36Ar
0.97 exp 10-9cm3
Comments
Mineral K-Ar dating
No data available
Major elements analysis
Analysis 1
Precision
0
SiO2
58.6
TiO2
0.62
Al2O3
17.23
Fe2O3
7.19
MnO
0.14
MgO
3
CaO
5.89
Na2O
3.62
K2O
2.47
P2OR
0.32
Total
100.2
Loss on ignition
1.1
Comments
Trace elements analysis
Analysis 1
Precision
Rb
48
Ba
340
Th
Nb
1.4
La
13.15
Ce
22
Sr
628
Nd
26
Sm
Zr
79
Eu
2.05
Gd
Dy
8.2
Y
71
Er
5.8
Yb
5.22
Sc
16
V
180
Cr
26
Co
18
Ni
19
Cu
Comments
Sr/Y=9
La/Yb=2.5
Ba/Nb=243
Ba/La=26
Microprobe analyses
No data available
Isotopic analysis
No data available
Map
Documents
No data available
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