نتایج جستجو برای: lithic
تعداد نتایج: 1046 فیلتر نتایج به سال:
T he excavations directed by Professor Dart at the Makapansgat Limeworks, and conducted mainly by myself at the site since 1960, were concerned during the 19631965 field seasons with an examination of the surface soil overlying the consolidated pink breccias, and of the contents of the abundant solution cavities which penetrate the underlying breccia mass to depths of up to 15
Obi-Rakhmat Grotto is situated 100 km northeast of Tashkent, Republic of Uzbekistan. The site was first studied in the 1960s and excavations through the 1970s yielded more than 40,000 stone artifacts. Excavations were renewed in 1998 with the goal of clarifying the archaeological, geological and environmental sequence. Based on studies of the 1998-1999 collections and a sample of artifacts with...
Recent scientific investigations have shed light on the ecological importance and physiological complexity of subaerial biofilms (SABs) inhabiting lithic surfaces. In the field of sustainable cultural heritage (CH) preservation, mechanistic approaches aimed at investigation of the spatiotemporal patterns of interactions between the biofilm, the stone, and the atmosphere are of outstanding impor...
This paper presents computer-aided lithic analysis conducted in the context of an interdisciplinary research framework combining computer science and archaeology – the Partnership for Research in Stereo Modeling (PRISM), at Arizona State University. Pilot projects conducted as part of PRISM serve to find real-world applications to the tridimensional visualization technology developed as part of...
The McMurdo Dry Valleys in Antarctica are a cold hyperarid polar desert that present extreme challenges to life. Here, we report a culture-independent survey of multidomain microbial biodiversity in McKelvey Valley, a pristine example of the coldest desert on Earth. We demonstrate that life has adapted to form highly-specialized communities in distinct lithic niches occurring concomitantly with...
Kaldar Cave is a key archaeological site that provides evidence of the Middle to Upper Palaeolithic transition in Iran. Excavations at the site in 2014-2015 led to the discovery of cultural remains generally associated with anatomically modern humans (AMHs) and evidence of a probable Neanderthal-made industry in the basal layers. Attempts have been made to establish a chronology for the site. T...
Heating stone to enhance its flaking qualities is among the multiple innovative adaptations introduced by early modern human groups in southern Africa, in particular during the Middle Stone Age Still Bay and Howiesons Poort traditions. Comparatively little is known about the role and impact of this technology on early modern human behaviors and cultural expressions, due, in part, to the lack of...
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