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Paleointensities on 8 ka obsidian from Mayor Island, New Zealand
Paleo Intensities 8 ka obsidian Mayor Island New Zealand
2014/12/31
The 8 ka BP (6050 BCE) pantelleritic obsidian flow on Mayor Island, Bay of Plenty, New Zealand, has been investigated using 30 samples from two sites. Due to a very high paramagnetic/ferromagnetic rat...
Obsidian exchange in prehistoric Baja California: an initial look at regional exchange networks in the peninsula
Obsidian exchange prehistoric Baja California
2014/12/10
Very few studies focus their attention on obsidian artifacts from the Late Holocene in Baja California. The published data from San Quintín, El Rosario, Guerrero Negro, Isla Cedros, Bahía de Concepcio...
Domestic obsidian production and consumption at the Middle Preclassic site of La Blanca, San Marcos, Guatemala
Domestic production consumption
2014/12/10
The La Blanca Obsidian Project analyzed material changes in household economy as a response to the development of centralized political authority in an early complex society in Ancient Mesoamerica. Th...
Material distribution patterns: an analysis of basalt and obsidian artifacts from the east side of the Tahoe National Forest and surrounding lands
Material distribution patterns obsidian artifacts
2014/12/10
This thesis is an analysis of data recovered from 29 archaeological sites on the east side of the Tahoe National Forest and surrounding lands. Toolstone sources and temporal phase information from ind...
Differential access to resources and the emerging elite: obsidian at La Blanca
La Blanca the emerging elite
2014/12/10
This thesis presents the results of a comparative analysis of obsidian artifacts recovered from five household contexts at La Blanca. Although situated in the shadow of Guatemala’s volcanic mountains,...
Domestic obsidian production and consumption at the Middle Preclassic site of La Blanca, San Marcos, Guatemala
Domestic obsidian production consumption
2014/11/7
The La Blanca Obsidian Project analyzed material changes in household economy as a response to the development of centralized political authority in an early complex society in Ancient Mesoamerica. Th...
Obsidian exchange in prehistoric Baja California: an initial look at regional exchange networks in the peninsula
Obsidian exchange prehistoric Baja California
2014/11/7
Very few studies focus their attention on obsidian artifacts from the Late Holocene in Baja California. The published data from San Quintín, El Rosario, Guerrero Negro, Isla Cedros, Bahía de Concepcio...
Material distribution patterns: an analysis of basalt and obsidian artifacts from the east side of the Tahoe National Forest and surrounding lands
Material distribution patterns obsidian artifacts
2014/11/7
This thesis is an analysis of data recovered from 29 archaeological sites on the east side of the Tahoe National Forest and surrounding lands. Toolstone sources and temporal phase information from ind...
Differential access to resources and the emerging elite: obsidian at La Blanca
resources the emerging elite La Blanca
2014/11/7
This thesis presents the results of a comparative analysis of obsidian artifacts recovered from five household contexts at La Blanca. Although situated in the shadow of Guatemala’s volcanic mountains,...
Experimental Study on the Formation of Clay Minerals from Obsidian by Interaction with Acid Solution at 150° and 200°C
Acid solution Allophane Boehmite Experimental alteration Halloysite Obsidian Spherical kaolinite
2011/12/27
Experimental alteration of obsidian with HCl solution was performed to elucidate dissolution mechanism and formation process of clay minerals in acid solution. Reactions were carried out using 0.1, 0....
Formation of Clay Minerals During Low Temperature Experimental Alteration of Obsidian
Allophane Dealkalized leached layer Fibrous material Nonstoichiometric dissolution Obsidian Smectite
2011/12/30
Experimental alteration of obsidian in distilled-deionized water at 150? 175? 200? and 225癈 was studied. The alteration products were examined by X-ray powder diffraction, scanning electron microscopy...