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Alca Obsidian

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Journal Article
Journal: Geology
Published: 01 July 2013
Geology (2013) 41 (7): 779–782.
...Kurt Rademaker; Michael D. Glascock; Bruce Kaiser; David Gibson; Daniel R. Lux; Martin G. Yates Abstract We report results from comprehensive mapping and multi-technique geochemical characterization of obsidian from the Alca source in the Peruvian Andes (15.3°S, 72.7°W), aimed at understanding...
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Shuttle Radar Topography Mission 90 m digital elevation model showing <span class="search-highlight">Alca</span> ...
Published: 01 July 2013
Figure 1. Shuttle Radar Topography Mission 90 m digital elevation model showing Alca obsidian source, other central Andean obsidian sources, and archaeological sites with Alca obsidian artifacts.
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Shuttle Radar Topography Mission 90 m digital elevation model showing <span class="search-highlight">Alca</span> ...
Published: 01 July 2013
Figure 2. Shuttle Radar Topography Mission 90 m digital elevation model showing Alca obsidian sample locations (masl—meters above sea level; UTM—Universal Transverse Mercator).
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<span class="search-highlight">OBSIDIAN</span> SAMPLES DEFINING <span class="search-highlight">ALCA</span> SUBSOURCES
Published: 01 July 2013
TABLE 1. OBSIDIAN SAMPLES DEFINING ALCA SUBSOURCES
Journal Article
Published: 01 August 2015
European Journal of Mineralogy (2015) 27 (5): 651–657.
... K. Glascock M.D. Kaiser B. Gibson D. Lux D.R. Yates M.G. ( 2013 ): Multitechnique geochemical characterization of the Alca obsidian source, Peruvian Andes . Geol. , 41 , 779 – 782 . Roth B.J. Dibble H.L. ( 1998 ): Production and transport of blanks...
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Journal Article
Published: 01 October 2010
Earth Sciences History (2010) 29 (2): 264–290.
... (C), cafema (M), alfema (A), and alca (F). They derived the latter three names from the chemical symbols for iron (Fe) and calcium (Ca) and the first two letters of magnesium (ma) and alkali (al). The adjectival forms given to these six factors were respectively: silic , spinic , coric...