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Rock magnetism and preliminary archaeointensity results from Harappa potsherds, India


Affiliations
1 Deccan College Post-Graduate and Research Institute, Pune 411 006, India; Archaeological Survey of India, Hyderabad Circle, Hyderabad 500 095, India
2 CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India
3 Wadia Institute of Himalayan Geology, 33, GMS Road, Dehradun 248 001, India
4 Deccan College Post-Graduate and Research Institute, Pune 411 006, India

New archaeointensity results from the Indian archaeological excavation at the historical Harappa Rakhigarhi site, India, dating from the third millennium bc, are reported. Fifteen samples from nine potsherd fragments were collected and subjected to the IZZI Thellier palaeointensity method. Detailed rock magnetic measurements were performed on representative potsherds. Rock magnetic properties indicate that magnetite is the dominant carrier of remanent magnetization. Archaeointensity values range from 23.65 ± 1.23 mT to 41.22 ± 1.82 mT (mean 32.64 ± 0.81 mT), while corresponding virtual axial dipole movements range from 5.06 to 10.60 ´ 1022 Am2 (mean 8.11 ´ 1022 Am2)

Keywords

Archaeointensity, IZZI protocol, potsherds, Rakhigarhi, rock magnetism.
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  • Rock magnetism and preliminary archaeointensity results from Harappa potsherds, India

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Authors

E. Sai Krishna
Deccan College Post-Graduate and Research Institute, Pune 411 006, India; Archaeological Survey of India, Hyderabad Circle, Hyderabad 500 095, India
M. Venkateshwarlu
CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India
M. R. Kapawar
Wadia Institute of Himalayan Geology, 33, GMS Road, Dehradun 248 001, India
P. D. Sabale
Deccan College Post-Graduate and Research Institute, Pune 411 006, India
N. Ramesh Babu
CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India
V. S. Shinde
Deccan College Post-Graduate and Research Institute, Pune 411 006, India

Abstract


New archaeointensity results from the Indian archaeological excavation at the historical Harappa Rakhigarhi site, India, dating from the third millennium bc, are reported. Fifteen samples from nine potsherd fragments were collected and subjected to the IZZI Thellier palaeointensity method. Detailed rock magnetic measurements were performed on representative potsherds. Rock magnetic properties indicate that magnetite is the dominant carrier of remanent magnetization. Archaeointensity values range from 23.65 ± 1.23 mT to 41.22 ± 1.82 mT (mean 32.64 ± 0.81 mT), while corresponding virtual axial dipole movements range from 5.06 to 10.60 ´ 1022 Am2 (mean 8.11 ´ 1022 Am2)

Keywords


Archaeointensity, IZZI protocol, potsherds, Rakhigarhi, rock magnetism.



DOI: https://doi.org/10.18520/cs%2Fv126%2Fi10%2F1236-1244