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ARCHAEOMAGNETISM DATING EARTH’S MAGNETIC FIELD PALAEOSECULAR VARIATION

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Presentation on theme: "ARCHAEOMAGNETISM DATING EARTH’S MAGNETIC FIELD PALAEOSECULAR VARIATION"— Presentation transcript:

1 ARCHAEOMAGNETISM DATING EARTH’S MAGNETIC FIELD PALAEOSECULAR VARIATION
Absolute age Stratigraphy and relative age Earth’s magnetic field EARTH’S MAGNETIC FIELD Description and definitions Internal and external field Origin of the Earth’s magnetic field PALAEOSECULAR VARIATION Declination, Inclination, Intensity Direct measurements Representation of data

2 REMANENT MAGNETISATION
Dia-, para- and ferro-magnetism Magnetic domains, relaxation time, coercivity Thermal and detrital magnetisation Primary and secondary magnetisation ARCHAEOMAGNETIC METHOD Basic principles of the method Measurements Laboratory-instrumentation Sampling Data analyses BAKED MATERIALS (kilns, fireplaces, bricks, pottery …. ) Remanent Magnetisation Examples

3 VOLCANIC ROCKS PAINTINGS LAKE SEDIMENTS Remanent Magnetisation
Examples PAINTINGS LAKE SEDIMENTS

4 RESULTS AND CASE HISTORIES
Characteristic examples Secular variation curves from different countries SPECIAL TOPICS Burning temperature, ... DISCUSSION 


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