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Geochronology, Geology, Geochemistry and Petrology
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AF-MA / AZ 21
Sample
Rock type
Néphélinite
Sampled at
1992-05-15
Sampled by
El Azzouzi
Bibliography
Bull. Soc. géol. Fr., 2010, 181, 3:243-257. Petrol
Country
Maroc
Region
Moyen Atlas
Zone
Azrou
Longitude
5.116667 DD 5° 7' 0''
Latitude
33.35 DD 33° 21' 0''
Altitude
1910 m
Body of water
Comments
Whole rock K-Ar dating
Analysis 1
Reference
B 4057-5
Method
K-Ar
Technique
Conventionnelle roch
Age
0.67 Ma
Age incertitude
90 Ka
Precision
2
Sigma
±1
K2O
1.62 %
Fused mass
1.0087 g
40ArR/40ArT
18.9 %
40ArR
0.37 10-7cm3.g-1
36Ar
0.89 exp 10-9cm3
Comments
Mineral K-Ar dating
No data available
Major elements analysis
No data available
Trace elements analysis
No data available
Microprobe analyses
No data available
Isotopic analysis
No data available
Map
Documents
No data available
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