
doi: 10.1038/249824a0
WE have dated some of the oldest examples of obsidian use yet known in America. The obsidian originates from a new location, the Mostin site, which contains about a dozen burials and is located near the Borax Lake site in northern California. There it is thought that man lived as long ago as 10,000 yr and perhaps even at the end of the Pleistocene1.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 11 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
