Wednesday, 08. February 2012

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| Amber origin. |
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Amber ? the fossilized resin from ancient coniferous trees, which were growing in the area of current Northern and Central Europe.
The specie of the tree has not been recognized till this day. The amber deposits, which are important for industrial purposes, are located in the area of Russia, Poland, Ukraine and Germany. Baltic amber, Ukrainian amber and Saxon amber are the same type of amber ? succinite. The age of the amber lumps on the territory of Poland is estimated to be about 40 ? 60 million years. Millions years ago, the thick forests gave soil huge amounts of resin, which after many physical and chemical transformations became amber. Then, with the flow of rivers, the small lumps went to the mouth of the rivers and stayed in there. Many of such deposits is located in the Northern Poland. In amber lumps one can find many tracks of the ancient age, the plant and insect inclusions. Some of the forms are internal swellings, in which we can find the biggest amount of inclusions. The amber is a good source of information about flora and fauna of that times. Scientists are finding plant inclusions in the forms of seeds, needles, twigs, flowers or fruits, and thanks to that they were able to mark 215 plant species. Nearly 90% of the animal inclusion is in the form of insects, the rest is in form of centipedes and spiders. The natural forms of retain the form of drops and stalactites, just as it exuded from the ducts and receptacles of the injured trees. The amber has become one of the most important witnesses of our planet?s history by the thousands of animal and plant relicts, trapped in the resin for the next generations. It is a real feast for the insectologists. Ants alone were found in nearly 11 000 of amber pieces! Besides there are two-wings insects, like: flies, bees or mosquitoes. One can find in amber spiders, saprophytes, and other invertebrates. ?The amber gives us also information on some of the actions of the then insects. Here is an ant carrying a larva. The death has stroked it so suddenly, that she was not able to lose her burden. The female locust did not stop laying eggs, copulating mosquitoes got caught in their act. The resin covered a small butterfly, just hatching from his cocoon and a predatory grasshopper sucking out its prey. There is a lot of such examples. They are telling us not only about what have lived in the amber forest, but how as well?. (Anna Pęczalska, Złoto Północy, Katowice 1981, page. 49.) The Baltic amber has a diversified level of transparency and colour: from light yellow to white, bluish, green, beige and brown. The amber formed in the inside of the trunk is usually not transparent.. The transparency and colour level of amber depends on the number and composition of gas bubbles in the substance of amber. The biggest known lump of Baltic amber weights 9750 grams. It was formed in the trunk of the tree, which was then coated during the glacial movements. It can be seen in the Natural History Museum of the Humboldt University in Berlin. |
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