Results 1 to 10 of about 5,099 (211)
, 2022 This chapter examines how the obsidian craters just east of the Sierra Nevada mountain range erupted in the last few millennia, some in recent centuries. Obsidian, because it lacks the constraints imposed by an internal molecular order, can in fact be flaked into tools with edges that are many times sharper than a razor blade. In the Sierra Nevada, the
Richard J. Nevle +2 more
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The obsidian mirror The obsidian mirror
Ilha do Desterro, 2008 The author James Norman is an American who has always lived in Mexico during the summer. He seems to love Mexican - Indian traditions and he is well acquainted with the pre-historic culture as it is shown in his book: "The Obsidian Mirror". "The Obsidian
Maria do Socorro Reis Amorin
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The origin and exchange of obsidian from Vinča-Belo Brdo [PDF]
Starinar, 2008 Since the time of the revolutionary characterization of obsidian in the 1960's only a small number of artefacts from the Serbian sites have been analyzed, of which at least seven samples come from the site of Vinča. These results showed that obsidian was
Tripković Boban, Milić Marina
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Expanded obsidian as a soil aerator, its porosity, physical and mechanical characteristics [PDF]
E3S Web of Conferences, 2020 Today, the decline in soil fertility progress, therefore, special attention paid to the search for new, including non-traditional sources of raw materials that allow cultivating agricultural crops. It is propose to use expanded obsidian as a soil aerator.
Safaryan Artsruni +4 more
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Central Oregon obsidian from a submerged early Holocene archaeological site beneath Lake Huron.
PLoS ONE, 2021 Obsidian, originating from the Rocky Mountains and the West, was an exotic exchange commodity in Eastern North America that was often deposited in elaborate caches and burials associated with Middle Woodland era Hopewell and later complexes.
John M O'Shea +6 more
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The Logical Timestamp Skew Anomaly in Event-Replicated Transaction Schedulers
IEEE Access, 2021 To sidestep reasoning about the complex effects of concurrent execution, many system designers have conveniently embraced strict serializability on the strength of its claims, support from commercial and open-source database communities and ubiquitous ...
Emil Koutanov
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Spire: A Cooperative, Phase-Symmetric Solution to Distributed Consensus
IEEE Access, 2021 All existing solutions to distributed consensus are organised around a Paxos-like structure wherein processes contend for exclusive leadership in one phase, and then either use their dominant position to propose a value in the next phase or elect an ...
Emil Koutanov
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Open Archaeology, 2020 Pliny the Elder testifies that roman workshops used volcanic glass (obsidian), but also produced and used a dark glass (obsidian-like glass) quite similar to the natural one.
Cantone Valentina +3 more
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Archaeological data on obsidian exchange in Northern Mesopotamia in IV–III mill. BC.
Вестник археологии, антропологии и этнографии, 2016 The article deals with a range of questions concerning obsidian exchange in settlements of Northern Mesopotamia. The chronological framework includes IV and III mill. BC (from Late Ubaid to Akkadian Periods). The first part presents the state of research
Ibragimova E.R.
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Shirataki obsidian exploitation and circulation in prehistoric northern Japan
Journal of Lithic Studies, 2014 Presently, the total number of archaeological obsidian sources in Japan is more than 80, and among them, 21 are in Hokkaido, northern part of the Japanese archipelago (Izuho and Sato 2007).
Miyuki Yakushige, Hiroyuki Sato
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