Iron technology of the ancient megalithic communities in the Vidarbha region of India

Abstract

The megalithic period in India is notable for the emergence and development of iron metallurgy and the appearance of new burials known as megaliths. A number of iron objects from megalithic sites in the Vidarbha region of India, dating to the first half of the 1st millennium BC, have been examined for their microstructures and carbon distributions. The artifact assemblage consists mainly of edged or pointed tools and weapons, along with some domestic implements. Results show that the technology applied in their manufacture is characterized by the use of low carbon iron of bloomery origin and the application of surface carburization as the primary means of steelmaking. The functional parts of the objects examined were made mostly of steel with their mechanical properties finely adjusted through a combination of quenching and tempering. Of particular importance are certain fan-shaped plates which we believe were produced and circulated as intermediaries to meet a wide range of consumer needs. It appears that the Vidarbha megalithic communities shared a fully developed and well-standardized iron technology of substantial flexibility. While exceptions to this general trend were found in some unfinished or used objects, these do not suggest the presence of an inferior technological status. This paper raises questions as to the origin of such a developed technology, and will discuss the probable spreading of several key technical ideas which bear striking similarities to those noted in the early iron traditions of Korea. (C) 2013 Elsevier Ltd. All rights reserved.