viernes, 19 de agosto de 2011

CILYNDERS SEALS

 
Mesopotamian limestone cylinder seal and impression—worship of Shamash, (Louvre).
A cylinder seal is a cylinder engraved with a 'picture story', used in ancient times to roll an impression onto a two-dimensional surface, generally wet clay. Cylinder seals were invented around 3500 BC in the Near East, at the contemporary site of Susa in south-western Iran and at the early site of Uruk in southern Mesopotamia. They are linked to the invention of the latter cuneiform writing on clay cylinders.[1][2][3] They were used as administrative tool, jewelry and as magical amulets, later versions would employ notations with Mesopotamian hieroglyphs. In later periods, they were used to notarize or attest to multiple impressions of clay documents. Graves and other sites housing precious items such as gold, silver, beads, and gemstones often included one or two cylinder seals, as honorific grave goods.
The seal itself was made from hard stone, glass, or ceramics such as Egyptian faience. Many varieties of material such as hematite, obsidian, steatite, amethyst and carnelian were used to make cylinder seals, but lapis lazuli was especially popular because of the beauty of the blue stone and as The alluvial country of Mesopotamia lacks good stone for carving; hence the large stones of early cylinders were imported probably from Iran.[4]
While most Mesopotamian cylinder seals form an image through the use of depressions in the cylinder surface (see lead photo above), some cylinder seals print images using raised areas on the cylinder (see San Andrés image below). The former are used primarily on wet clays; the latter, sometimes referred to as roller stamps, are used to print images on cloth and other similar two dimensional surfaces.
Cylinder seals are a form of impression seal, a category which includes the stamp seal and finger ring seal.
http://en.wikipedia.org/wiki/Cylinder_seal

Cylinder Seals
 

Sumerian/Elamite Cylinder Seals
(French Sceaux-cylindres, German Zylindersiegel) are small (2-6 cm) cylinder-shaped stones carved with a decorative design in intaglio (engraved). The cylinder was rolled over wet clay to mark or identify clay tablets, envelopes, ceramics and bricks. It so covers an area as large as desired, an advantage over earlier stamp seals. Its use and spread coincides with the use of clay tablets, starting at the end of the 4th millennium up to the end of the first millennium.
After this time stamp seals are used again. Cylinder seals are important to historians. The seals were needed as signature, confirmation of receipt, or to mark clay tablets and building blocks.
The invention fits with the needs caused by the general development of city-states. Inscriptions are mostly carved in reverse, so as to leave a positive image on the clay with figures standing out. Some are directly carved and leave a negative imprint.
Stamp and cylinder seals for identifying ownership of property, and tokens for recording commodities, were other possible sources.

More than two thousand years later, in 2,308 BCE, the Sumerians developed their equivalent of the 11:57pm July 3rd 14,000 BCE sky chart and Narmer Plate combined. It comes in the form of a royal cylinder-seal depicting "The Sun is Risen". The purpose of the seal is to celebrate the Dawn of the Age of Aries. Perhaps not surprisingly it comes complete with Ancient Egyptian hieroglyphs. In linking the seal with the Ancient Egyptian 11:57 pm July 3rd 14000BCE sky chart the following need to be accounted for: the Celestial Sphinx and the Rising Sun, together with the Constellations of Orion, Gemini, Phoenix, and Grus. There are two other constellations on the sky chart, those of Taurus and Piscis Austrinus.

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