Results 81 to 90 of about 170 (117)
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Archaeological obsidian from La Sierra Gorda Mexico, by PIXE
Nuclear Instruments & Methods in Physics Research B, 2009Abstract The chemical compositions of 42 obsidian pre-Hispanic artifacts from Tancama and Purisima, both archaeological sites of La Sierra Gorda Valleys, Mexico, were analyzed by PIXE technique. These obsidians came from four sources: Sierra de Pachuca Hidalgo, Paraiso Queretaro, Ucareo Michoacan and mainly from Zacualtipan/Metzquititlan Hidalgo ...
M Jiménez-Reyes, D Tenorio
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Spectral Analysis of Time Series of Carbonate Aquifer of Sierra Gorda
Advances in Karst Science, 2017Both Moon and Sun induce Earth tides. Signatures of the Earth’s crustal tides could be recorded in the groundwater in the form of rise and fall of its piezometric surface. In relationship with this phenomenon, there is a scarcity of these kinds of studies in carbonate aquifers.
David Pulido-Velázquez +2 more
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Espacio social y crisis política: La Sierra Gorda 1850-1855
Mexican Studies/Estudios Mexicanos, 1993The Sierra Gorda forms a portion of the Sierra Madre Oriental, a vast region in central Mexico which became a haven for discontented and politically persecuted groups in the nineteenth century. This article examines the manner in which local socioeconomic interests came into conflict with the project of Santa Anna's government to convert the area into ...
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Fabrics of forsterite in CBa chondrite Sierra Gorda 013
Acta GeochimicaRong Li, Wei Chen, Chun-Hui Li
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Crystal structure model for metavoltine from Sierra Gorda
TMPM Tschermaks Mineralogische und Petrographische Mitteilungen, 1976The crystal structure of metavoltine from Sierra Gorda, Chile, has been solved from photographic X-ray data by the heavy atom method. The space group used wasP3 witha=9.575(5) andc=18.17(1)A; cell content: K2Na6 (Fe2+, Cu, Zn)Fe 6 3+ (SO4)12O2·18H2O.
C. GIACOVAZZO +3 more
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