A comparative electron microprobe study of ?Aeginetan? wares with potential raw material sources from Aegina, Methana, and Poros, Greece

2002 ◽  
Vol 17 (6) ◽  
pp. 555-577 ◽  
Author(s):  
Michael J. Dorais ◽  
Christine M. Shriner
2008 ◽  
Vol 59 (2) ◽  
pp. 129-134
Author(s):  
Ion Teoreanu ◽  
Roxana Lucia Dumitrache ◽  
Stefania Stoleriu

Any change of the raw material sources for glazes, economically, ecologically motivated, and also from the glaze quality point of view, is conditioned by the molecular formula rationalization and by the variation limits of the molecular formula, respectively. The proper glaze compositions are placed within their limit variation intervals with optimized processing and utilization properties. For this purpose, the rationalization criteria and procedures of molecular formulas are summarized in the present paper, as well as the results referring to their rationalization obtained in the authors� previous work. Thus, one starts from a base of raw materials that are selected, usable and also accessible for the design and producing of the glazes. On these bases the groundwork and the design equation for the glaze recipes are developed, exemplified for a single glaze. For an easy access to results, computer programs are used for an easy access to results.


2021 ◽  
pp. 1-21
Author(s):  
Hannah V. Mattson

Dedicatory offerings of small colourful objects are often found in pre-Hispanic architectural contexts in the Ancestral Pueblo region of the American Southwest. These deposits are particularly numerous in the roof support pillars of circular ritual structures (kivas) at the site of Pueblo Bonito, Chaco Canyon, which served as the ceremonial hub of the Chacoan regional system between the tenth and twelfth centuries ce. Based on the importance of directionality and colour in traditional Pueblo worldviews, archaeologists speculate that the contents of these radial offerings may likewise reference significant Chacoan cosmographic elements. In this paper, I explore this idea by examining the distribution of colours and materials in kiva pilaster repositories in relation to directional quadrants, prominent landscape features, and raw material sources. I discuss the results in the context of Pueblo cosmology and assemblage theory, arguing that particular colours were polyvalent and relational, deriving their meanings from their positions within interacting and heterogenous assemblages.


2009 ◽  
Vol 68 (1) ◽  
pp. 35-40 ◽  
Author(s):  
E. Akça ◽  
J. Arocena ◽  
G. Kelling ◽  
T. Nagano ◽  
P. Degryse ◽  
...  

2021 ◽  
Vol 11 (21) ◽  
pp. 10466
Author(s):  
Yuan Wang ◽  
Cuifeng Du ◽  
Mengmeng Cui

In order to solve the problem of road dust pollution, an ecological dust suppressant for road surfaces has been developed using monomer, orthogonal, and optimization experiments and based on the dust raising mechanism. A humectant, hygroscopic agent, coagulant and surfactant and their concentration ranges have been determined through monomer experiment. The preliminary formula of the dust suppressant has been obtained through orthogonal experiment, with the water loss rate, moisture content rate, viscosity value, and surface tension value serving as experimental indexes. The optimal formula for the dust suppressor has been calculated through an optimization experiment, with the toxicity, moisture absorption and retention performance of plants, and the relative damage rate of plant seeds serving as experimental indexes. Based on the performance characterization of ecological road dust suppressant, the ecologically and environmentally friendly dust suppressant demonstrates fine moisture absorption and retention performance, good wind and rain erosion resistance, and no toxicity. The ecological road dust suppressant developed herein covers extensive raw material sources. It is ecologically and environmentally friendly, fit for most urban roads, and has a fine dust suppression effect. Meanwhile, it also can bring in good economic and social benefits, demonstrating its broad application prospects.


2020 ◽  
Vol 106 ◽  
pp. 213-225 ◽  
Author(s):  
Richard Nasilele Mutafela ◽  
Etzar Gomez Lopez ◽  
Torleif Dahlin ◽  
Fabio Kaczala ◽  
Marcia Marques ◽  
...  

2020 ◽  
pp. 019769312097631
Author(s):  
Richard L Rosencrance ◽  
Amy J Hirshman

The archaeology of the eastern West Virginia uplands remains significantly understudied compared to other areas of the Appalachian Plateau. Bettye Broyles’ excavations at the Hyre Mound site (46RD1) in 1963 recovered a variety of artifacts within and directly adjacent to a burial mound but the excavations remain largely unpublished. We provide a report of Broyles’ excavations, new radiocarbon dates, and an analysis of the lithic raw material frequencies at the site. Material culture and ceremonial practices suggest the initial mound construction dates to the Middle Woodland period. Radiocarbon dating of cultural features confirms that people also used the locality during the Late Woodland period. Lithic raw material frequencies indicate a preference for non-local, Hillsdale chert found ∼100 km from the site throughout both time periods. The directionality of toolstone conveyance supports existing models that emphasize the quality and location of raw material sources and the orientation of the region’s physiography.


2014 ◽  
Vol 79 (4) ◽  
pp. 596-615 ◽  
Author(s):  
Loren G. Davis ◽  
Alex J. Nyers ◽  
Samuel C. Willis

AbstractThe discovery of an artifact cache containing Western Stemmed Tradition (WST) projectile points in a clearly defined pit feature at the Cooper’s Ferry site offers a unique perspective on early lithic technology and logistical organization in western North America. A description and analysis of the cache feature reveals several new insights, including: a rocky cairn capped the surface of the pit feature; some of the artifacts were made from cryptocrystalline silicates found 16 km away; debitage analysis, including aggregate and attribute based measures, identified two distinct lithic reduction stages present in the cache; new radiocarbon assays suggest that the cache is probably not early Holocene in age and may date to associated age estimates of 11,410–11,370 radiocarbon years before present (B.P.). Unlike Clovis caches, the Pit Feature A2 cache at Cooper’s Ferry appears to be a generalized toolkit that was probably placed at the site for future use. If the 11,410–11,370 radiocarbon years B.P. assays date the creation of the Pit Feature A2 cache, then its creators were probably not pioneers in the lower Salmon River canyon but possessed local knowledge about the landscape and raw material sources; these patterns suggest greater time depth for WST foragers.


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