منابع مشابه
The Dating of Rock Art: a Critique
The methods for estimating the antiquity of rock art are reviewed critically, dividing them into traditional and scientific approaches. The reliability of both is examined critically. It seems that the most promising options have attracted only limited interest, while those methods that have been afforded the most sustained research efforts have been discredited or provide only tenuous results....
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Rock varnish coats many surfaces of geomorphic and archaeologic interest in arid lands. All varnish dating techniques are limited by the time lag between the exposure of a surface to subaerial processes and the onset of varnishing. They are valid only where manganese is not remobilized after deposition, for example, in most arid environments. The premise of a new age-determination method, catio...
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Rock art is seldom recovered from sealed archeological contexts and is therefore difficult to date or integrate with other artifactual assemblages. South African engravings, found on low rocks at open-air sites, exemplify the problem. Multiscale spatial study of technique, thematic variation, faunal content, geoarcheological paterning, settlement history, and ethno-archeological setting provide...
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. clicking here colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others . here following the guidelines can be obtained by Permission to republish or repurpose articles or portions of articles (this information is current as of October 12, 2010 ): The following resources related to this article are available online at ww...
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This article is concerned with the so-called Levinthal’s paradox. It will be argued that many have sought a “solution” to Levinthal’s paradox, where in fact, the “solution” already appeared in Levinthal’s original articles. Most of the subsequent suggested “solutions” were inadequate solutions to a non-paradox. It is shown that the discovery of strong hydrophilic forces not only dismisses the L...
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ژورنال
عنوان ژورنال: Nature
سال: 1999
ISSN: 0028-0836,1476-4687
DOI: 10.1038/44223