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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Acheulian
Acheulian artefacts and tephra from Upland Western Maharashtra (Deccan Volcanic Province), Peninsular India Available to Purchase
Abstract The two Early Acheulian sites of Bori and Morgaon in the Deccan Volcanic Province in Upland Maharashtra, India bear some association with an acidic tephra deposit in a fluvial context. Acheulian artefacts in association with tephra were first reported in India from the Bori site and numerous efforts to date this tephra have since been undertaken. These efforts employed various dating methods and produced a total of 10 absolute dates ranging from the Early Pleistocene with a maximum age of 1.4 Ma to the Late Pleistocene with a minimum age of 23.4 ± 2.4 ka. However, field observations and a typo-technological analysis strongly suggests that these Early Acheulian artefacts occur in a semi-primary context, and thus contest the Late Pleistocene age of the tephra and redeposition of the artefacts as argued by some scholars. At Morgaon, the Acheulian artefacts have been recovered from basal fluvial sediments that contain clasts of laterite. These sediments are capped by two low-energy clay facies that are separated by high-energy gravel lenses. The tephra at Morgaon has been reported from the upper clay facies and has produced absolute dates ranging from the Matuyama period (>0.78 Ma) to the Late Pleistocene (41 ka). After more than two decades of investigation at these sites, the number of absolute dates procured through methods such as electron spin resonance (ESR), 39 Ar– 40 Ar, U–Th and palaeomagnetism, although encouraging, are inconclusive. This paper is therefore an attempt to gauge the nature of the palaeolandscapes that most probably existed during the Early Quaternary. This will be achieved by studying local geomorphological variability between the two sites, along with a preliminary analysis of lithic morphology.
Spatial distribution of Palaeolithic sites in relation to raw material sources in the central Narmada Valley, India Available to Purchase
Abstract Landscape adaptation in central India is quite exceptional, as more than 300 Lower Palaeolithic occurrences have been reported in different contexts. The present work deals with these assemblages and associated raw material sources in the central Narmada Valley. The central Narmada Valley is rich in various rock types that were used as raw material by various hominin populations. The Narmada River divides the region into northern and southern parts. In the north, there are mainly the Vindhyan Supergroup and Deccan Trap, whereas, in the south, there are primarily the Gondwana Supergroup, the Deccan Traps and the Mahakoshal Group. Along the river, there are exposures of the Vindhyan Supergroup and thick deposits of Quaternary alluvium. The main raw material types in the north of Narmada are quartzite and sandstone (Vindhyan Supergroup), whereas, in the south of Narmada, the main raw materials are quartzite (Gondwana Supergroup) and chert (Deccan Trap). Acheulean sites are mostly found along the foothills of Vindhyan, as well as along the banks of the Narmada River and its tributaries. In this chapter, the author has tried to link these raw material sources with the occurrences of Palaeolithic sites in order to have a better understanding of past hominin land-use patterns and ecological adaptations.
Doma: a new multi-technological lithic occurrence in the Lower Son Valley (north-central India) and its regional context Available to Purchase
Abstract The Lower Son Valley is generally overlooked despite a lengthy history of archaeological and geological studies in the adjacent Middle Son Valley. However, recent explorations in the former have yielded a large number of Palaeolithic and microlithic sites. This paper provides an initial report on Doma, a newly discovered site with the first-known stratified bifaces in this part of the valley. The site preserves multi-period technologies in different contexts, including terminal Acheulean/early Middle Palaeolithic and Upper Palaeolithic (all tentatively assigned based on respective typologies). Preliminary field observations are presented on the sedimentary sequence, archaeological surveys, topographical mapping, raw material and the overall palaeoanthropological assessment of Doma. The raw material utilized at the site is primarily porcellanite, derived from exposures of the Semri Group of the Vindhyan Supergroup. The oldest Palaeolithic evidence at Doma broadly resembles Late Acheulean sites dated to c. 140–120 ka in the nearby Middle Son Valley. The Pleistocene sediments here also yielded mammalian fossil specimens, such as long bone fragments, dental specimens and antler fragments. Along with the lithics and fossils, the site also preserves datable sedimentary sequences with calcrete, all key proxies in developing a testable model of technological transitions within a palaeoenvironmental framework, in the future.
Geoarchaeology in India in the 21st Century: an Outsider's Perspective Available to Purchase
Abstract Progress over the last 20 years in establishing reliable benchmarks in the Paleolithic of India has been uneven but major successes have been the dating of the earliest Acheulean assemblages in India; the dating of the onset of the Middle Stone Age; the dating of the earliest microlithic assemblages in India; and the dating of the antiquity of human occupation of rain forests in South India and Sri Lanka. Also important is our greater understanding of the Younger Toba Tuff and the impact of the Toba megaeruption 74 ka ago on hominin populations in India. Major uncertainties persist over when the genus Homo first entered South Asia; when our own species, H. sapiens first entered South Asia; the age of the earliest blade assemblages in India; and the antiquity of its rock art.