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Mineral Magnetic Characterization of Archeological Potsherds:An Example from the Deccan Province, Western Maharashtra, India


Affiliations
1 Department of Geology, Savitribai Phule Pune University, Pune 411 007, India
2 Deccan College Post-Graduate and Research Institute, Pune 411 006, India
 

The ancient (archaeological) and modern potsherds sourced from Deccan basaltic soils and sediments at selected sites in the Bhima and Godavari river basins of the western Maharashtra, India, show characteris-tic mineral magnetic properties. High magnetic sus-ceptibilities (χ lf) for the Deccan-sourced sherds enable their distinction from other sources in the region. The modern pottery sourced from Deccan soils shows sig-nificant lower χ lf than ancient pottery in the region, which further shows lower χ lf than the associated soils (/sediments) due to successive removal of detrital grains as a function of improvement in the pre-processing techniques. The ancient and modern pot-teries show higher superparamagnetic content that is otherwise absent in the source, suggesting its neo-formation during firing. High hematite content in modern pottery relative to ancient pottery further in-dicates higher oxidative firing in the former. Based on close examination of Isothermal Remanence Magneti-zation (IRM) acquisition rates, we suggest the ratios: IRM1.8 mT/IRM0.3–0.025 mT and HIRM/SoftIRM along with other routine mineral magnetic parameters to esti-mate the relative degree of oxidative heating, source discrimination and the levels of pre-processing of raw material amongst the Deccan-sourced pottery. The present approach being rapid and economic, a large quantitative database can be generated from the pot-sherds for detailed characterization of these archaeo-logical materials.

Keywords

Ancient Pottery, Basaltic Soils And Sedi-Ments, Mineral Magnetism, Modern Potsherds.
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  • Shepard, A. O., Ceramics for the Archaeologist, Carnegie Institute of Washington, 1956, p. 414.

  • Rye, O. S., Pottery Technology: Principles and Reconstruction (Vol. 4), Taraxacum, Washington, DC, USA, 1981.

  • Rice, P. M., Pottery Analysis: A Sourcebook, University of Chica-go Press, Chicago, USA, 2015, p. 447.

  • Yoon, Y., Kim, T., Yang, M., Lee, K. and Lee, G., Quantitative analysis of pottery glaze by laser induced breakdown spectro-scopy. Microchem. J., 2001, 68(2–3), 251–256.

  • Martineau, R., Walter‐Simonnet, A. V., Grobéty, B. and Buatier, M., Clay resources and technical choices for Neolithic pottery (Chalain, Jura, France): chemical, mineralogical and grain‐size analyses. Archaeometry, 2007, 49(1), 23–52.

  • Thompson, R. and Oldfield, F., Environmental Magnetism, Allen and Unwin Press, London, UK, 1986, p. 227.

  • Heller, F. and Evans, M. E., Loess magnetism. Rev. Geophys., 1995, 33(2), 211–240.

  • Liu, Q., Roberts, A. P., Larrasoana, J. C., Banerjee, S. K., Guy-odo, Y., Tauxe, L. and Oldfield, F., Environmental magnetism: principles and applications. Rev. Geophys., 2012, 50(4), 1–50.

  • Venkatachalapathy, R., Sridharan, T., Dhanapandian, S. and Ma-noharan, C., Determination of firing temperature of ancient potter-ies by means of infrared and Mossbauer studies. Spectrosc. Lett., 2002, 35(6), 769–779.

  • Venkatachalapathy, R., Bakas, T., Basavaiah, N. and Deenadaya-lan, K., Mossbauer and mineral magnetic studies on archaeologi-cal potteries from Adhichanalur, Tamil Nadu, India. Hyperfine Interact., 2008, 186, 89–98.

  • Manoharan, C., Venkatachalapathy, R., Dhanapandian, S. and Deenadayalanm, K., FTIR and Mossbauer spectroscopy applied to study of archaeological artifacts from Maligaimedu, Tamil Nadu, India. Indian J. Pure Appl. Phys., 2007, 45, 860–865.

  • Manoharan, C., Veeramuthu, K., Venkatachalapathy, R., Radha-krishna, T. and Ilango, R., Spectroscopic and ancient geomagnetic field intensity studies on archaeological pottery samples, India. Lith. J. Phys., 2008, 48(2), 195–202.

  • Dhanapandian, S., Manoharan, C. and Sutharsan, P., Applications of FTIR and 57Fe Mossbauer techniques in studies of recently excavated Indian archaeological pottery. Acta Phys. Pol. A, 2012, 121, 592–598.

  • Warrier, A. K. and Shankar, R., Geochemical evidence for the use of magnetic susceptibility as a paleorainfall proxy in the tropics. Chem. Geol., 2009, 265(3), 553–555.

  • Maher, B. A., Characterisation of soils by mineral magnetic meas-urements. Physics Earth Planet. Inter., 1986, 42(1–2), 76–92.

  • Singer, M. J. and Fine, P., Pedogenic factors affecting magnetic susceptibility of northern California soils. Soil Sci. Soc. Am. J., 1989, 53(4), 1119–1127.

  • Jordanova, D., Goddu, S. R., Kotsev, T. and Jordanova, N., Indu-strial contamination of alluvial soils near Fe–Pb mining site revealed by magnetic and geochemical studies. Geoderma, 2013, 192, 237–248.

  • Torrent, J., Liu, Q. S. and Barrón, V., Magnetic minerals in Calcic Luvisols (chromic) developed in a warm Mediterranean region of Spain: origin and paleoenvironmental significance. Geoderma, 2010, 154(3), 465–472.

  • Balsam, W. L., Ellwood, B. B., Ji, J., Williams, E. R., Long, X. and El Hassani, A., Magnetic susceptibility as a proxy for rainfall: worldwide data from tropical and temperate climate. Quater. Sci. Rev. [online], 2011, 30(19–20), 2732–2744.

  • Sabale, P. D. and Kshirsagar, S. D., A preliminary report on geo-archaeological explorations in upper reaches of Sina river basin: a case study of Ahmednagar, Bid, Osmanabad and Solapur districts of MS. Bull. Deccan Coll., 2014, 74, 9–20.

  • Shivaji, K., Mishra, S. and Sabale, P. D., Some Acheulian locali-ties in the Sina basin. Bull. Deccan Coll., 2014, 74, 21–26.

  • Dearing, J., Magnetic susceptibility. In Environmental Magnetism: A Practical Guide, 1999, vol. 6, pp. 35–62.

  • Mullins, N. C., Hargens, L. L., Hecht, P. K. and Kick, E. L., The group structure of cocitation clusters: a comparative study. Am. Sociol. Rev., 1977, 42, 552–562.

  • Verosub, K. L. and Roberts, A. P., Environmental magnetism: past, present, and future. J. Geophys. Res.: Solid Earth, 1995, 100(62), 2175–2192.

  • Maher, B. A., Magnetic properties of modern soils and Quaternary loessic plaeosols: paleoclimate implications. Palaeogeogr., Palaeoclimatol., Palaeoecol., 1998, 137(1–2), 25–54.

  • Kale, V. S., Dole, G., Upasani, D. and Patil Pillai, S., Deccan Plateau uplift: insights from parts of Western Uplands, Maharash-tra, India. Geological Society, London, Spl. Publ. 445, 2016, pp. 11–46; doi:org/10.1144/SP445.2.


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  • Mineral Magnetic Characterization of Archeological Potsherds:An Example from the Deccan Province, Western Maharashtra, India

Abstract Views: 251  |  PDF Views: 73

Authors

Jyotibala Singh
Department of Geology, Savitribai Phule Pune University, Pune 411 007, India
S. J. Sangode
Department of Geology, Savitribai Phule Pune University, Pune 411 007, India
P. D. Sabale
Deccan College Post-Graduate and Research Institute, Pune 411 006, India

Abstract


The ancient (archaeological) and modern potsherds sourced from Deccan basaltic soils and sediments at selected sites in the Bhima and Godavari river basins of the western Maharashtra, India, show characteris-tic mineral magnetic properties. High magnetic sus-ceptibilities (χ lf) for the Deccan-sourced sherds enable their distinction from other sources in the region. The modern pottery sourced from Deccan soils shows sig-nificant lower χ lf than ancient pottery in the region, which further shows lower χ lf than the associated soils (/sediments) due to successive removal of detrital grains as a function of improvement in the pre-processing techniques. The ancient and modern pot-teries show higher superparamagnetic content that is otherwise absent in the source, suggesting its neo-formation during firing. High hematite content in modern pottery relative to ancient pottery further in-dicates higher oxidative firing in the former. Based on close examination of Isothermal Remanence Magneti-zation (IRM) acquisition rates, we suggest the ratios: IRM1.8 mT/IRM0.3–0.025 mT and HIRM/SoftIRM along with other routine mineral magnetic parameters to esti-mate the relative degree of oxidative heating, source discrimination and the levels of pre-processing of raw material amongst the Deccan-sourced pottery. The present approach being rapid and economic, a large quantitative database can be generated from the pot-sherds for detailed characterization of these archaeo-logical materials.

Keywords


Ancient Pottery, Basaltic Soils And Sedi-Ments, Mineral Magnetism, Modern Potsherds.

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DOI: https://doi.org/10.18520/cs%2Fv117%2Fi2%2F251-259