Fulgurite at the Mezargediği area İzmir-Selçuk-Çamlık village, Turkey

Yıl 1985, Cilt: 103-104 Sayı: 103-104, 41 - 45, 01.08.1985

Hasan Durgun İsmail Hakkı Karamanderesi

Öz

 Fulgurite in the Çamlık Region is a black silica glass with the white spherulitic inclusions. Those feldspar-like inclusions are lath shaped grains and composed of nonreactive SiO2-modifications such as tridymite, cristobalite, lechatelierite, coesite, and quartz. The silica glass is the melting product of a high quartz bearing silicate rock and quartzose sand. In the area the origional materials are quartz veinlets bearing muscovite schist and quartzose sand used in concrete base fastening the power-line pole. Persistent melting of the mother-lode has increased the amount of the melt. Hence flow of the liquid material has taken place for a while within few meters. Because of the flow migration from the generating environment the produced silica glass has spreaded out around and scattered within 25 square meters. Solid product shows hollow tubes along the flow channels. The steam and reaction gases have given vesicular cavities in the solidified front. These vesicular structures have given a spongy structure to the solid glassy mass. The white angular granules in the black glassy matrix have been identified as the SiO2-modifications of the quartz in thin sections under the microscope

Anahtar Kelimeler

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Kaynakça

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