The purpose of this guide is to provide a general introduction to some of the historic artifacts recovered from archaeological sites in the Upper Sangamon Basin of east-central Illinois.Most of the field work has focused on the Mahomet area, but these sites are considered typical of material from the larger study area.Tin-enameled glaze wares are known by different names generally depending on their country of origin.
Free chat sex ipad - Dating ceramic artifacts
Earthenware is the softest and least vitrified, stoneware the next most, and porcelain is the hardest and most glass-like.
Within each of these categories one would find variations in surface treatments.
The vitrification process involves the temperature and conditions under which the particles of clay fuse.
The high temperature has the effect of changing the physical properties of the clay so that it, for instance, will not dissolve to mud when exposed to water.
It was produced at many places throughout the state and region and was often the object of cottage industry.
One important manufacturer was located in Galena, Illinois.
The level of heterogeneity reflects the social and economic differentiation of the time period.
The discussion will be limited to three artifact categories: ceramics, glass, and structural materials.
These changes sometimes left temporally sensitive indications at the level of the artifact.