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Paleogeographical features of the Eocene amber placers of the Sambia Peninsula
Abstract:
<p> At present there are nearly 200 known amber deposits throughout the world and new ones are being discovered every year. The best-known type of amber is Baltic amber. Baltic amber accounts for about 98% of all the amber on the market today. In some of the countries that surround the Baltic Sea amber is industrially mined and exported in large quantities. Gem-quality amber accounts for less than 20 per cent of total production. Less perfect samples – “pressed” amber are used for costume jewelry. The rest of the amber is used for amber oil, amber acid, amber varnish, and other amber products. About 90% of the world's extractable amber is in Sambia Peninsula. There are two types of amber placers here. The first type includes the ancient Eocene placers, which are located below sea level. The largest amber (succinite) deposits formed in the Late Eocene and Early Oligocene and were being eroded by seabed abrasion. Succinite occurs in the "light blue earth” - sandy glauconite clay. The formation of primary deposits succinite took place in different conditions (various mineral fossil resin species and paleorelief) in deep parts of the Eocene sea paleoshelf. The average concentration of the succinite productive layer has been estimated 600-1500gm3. At the base of this layer are Lower Paleocene phosphoritte's lenses. The second type of placers is represented by the modern seabed accumulations of amber. These placers are still forming today.</p>
Keywords: Paleogeographic conditions, Amber, the Baltic sea
Authors:
Svetlana Babaeva, Santa Monica community college; Submitting Author / Primary Presenter
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Paleogeographical features of the Eocene amber placers of the Sambia Peninsula
Category
In-Person Paper Abstract