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Test results of fine sediment fractions from the Tell el-Farkha archaeological site, Nile Delta, Egypt

100%

Pawlikowski M. , Słowioczek E.

Studies in Ancient Art and Civilization

2015

tom 19

41-55

The Tell el-Farkha site is located immediately to the north of the modern village of Ghazalah and occupies an area of c. 4.5ha. It is marked by three hills: the Eastern Kom, Central Kom and Western Kom. This research will focus on the profile of the layers of sediment. These studies are important because they are innovative and contain information on the history of the site. Research work was conducted on site and produced graphs showing the composition of individual microartefacts within the sediment. Samples were taken from each profile layer then dissolved and sifted to obtain fine fractions. Laboratory work focused on the calculation of the percentage of different microartefacts in each sifted fine fraction. Photographs of selected microartefacts (bones, ceramics, carbon, quartz, and others) were taken using a binocular magnifier at 20x magnification. The examination of this material has provided both new and valuable information concerning the functioning and development of the archaeo-logical site.

Dolomite-illitic rocks (dolillite) : the product of hydrothermal replacement of carbonate rocks in the Holy Cross Mts., Poland : a possible guide to ores

100%

Nieć M. , Pawlikowski M.

2019

tom Vol. 63, No. 2

275--295

The dolomites altered to dolomite-illitic rocks were foundac companying marcasite-pyrite-hematite mineralization within the Middle Devonian carbonate rocks in the eastern part of the Holy Cross Mts. (Poland) in the fault zones and their close vicinity. The alteration consist of dolomite recrystallization and replacement by illite, accompanied by small amounts of sillca, K-feldspars and disseminated pyrite or hematite. The final product of dolomite replacement by illite are massive, dolotmite-illitic rocks unevenly distributed within the unaltered dolomites or in fault breccia. They form irregular metric-sized nest-like bodies most often with blurred boundaries, or in some places sharp delineated veins and lenses. Illite crystallinity, demonstrates its hydrothermal origin. Altered rocks are characterized by elevated contents of REE, Rb, and sometimes other trace metal (Zr, Ti, Zn, U, Th, Ba and al.), compared to unaltered dolomites. The enrichment in REE, Zr and Ti implies their mobility in hydrothermal solutions. The lamprophyre intrusions present in the close vicinity may be considered as the probable source of potassium rich hydrothermal fluids. The peculiar features of dolomite-illitic rocks such as: their composition and occurrence close to the sulphide and hematite mineralization, allow supposing, that they may be a guide to deeply seated unknown ore deposits.

Prefabrykowane panele z aktywną izolacją termiczną

80%

Pawlikowski M. , Fedorczak-Cisak M. , Romańska-Zapała A. , Wiśniowska A.

tom nr 11

25--27