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The oak chronology (948-1314 ad) for the Żary area (SW Poland)

Danek M., Kłusek M., Krąpiec M.

Geochronometria

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2007

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Vol. 26

47-52

EN

The study presents the results of investigations aimed at construction of a site chronology for oak wood from the surroundings of Żary (SW Poland). The 366-year chronology ZY_2006, covering the period 948-1314 AD was determined on the basis of 189 individual ring patterns representing samples of archaeological wooden objects lifted at the excavation works led in the Old Town of Żary in the years 2004-2005. The chronology produced exhibits high similarity to the standards for the neighbouring regions: Wielkopolska and Lower Silesia. The statistical parameters of the chronology are very high and, thanks to the signature years determined, it should be an excellent tool for dating samples of mediaeval timbers from the whole region of Ziemia Lubuska, including some with relatively short dendrochronological sequences.

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Dendrochronological studies of wood from mediaeval mines of polymetallic ores in Lower Silesia (SW Poland)

Szychowska-Krąpiec E.

Geochronometria

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2007

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Vol. 26

61-68

EN

The paper presents results of dendrochronological dating of wood encountered in abandoned mines in the eastern part of Lower Silesia. The research was carried out in gold mines in Złoty Stok, Głuchołazy, and Zlate Hory, a polymetallic-ore mine in Marcinków as well as old mines in the Sowie Mts: the Silberloch adit, an adit on the hillside of Mała Sowa, a graphite mine, and the silver and lead mine Augusta. Altogether 69 samples were taken from timbers of coniferous tree species: Pinus sylvestris, Abies alba, Picea abies and Larix decidua. The oldest wood, from the turn of the fifteenth and sixteenth centuries was encountered in the gold mines in Zlate Hory and Głuchołazy. In the gold mine in Złoty Stok, graphite mine in Sowie Mts and in Marcinków there was identified wood from the seventeenth and eighteenth centuries. Generally, timbers from the nineteenth century were prevailing, and in three cases there was even encountered relatively young twentieth-century wood in the gold mine in Złoty Stok and in the Silberloch adit. The analyses carried out were only preliminary. Broader, interdisciplinary investigations, including dendrochronology, archaeology, geology, mining, and palaeobotany, would substantially contribute for learning the history of the mining in the whole region.

3

The Scots pine chronology (1582-2004 ad) for the Suwałki region, NE Poland

Szychowska-Krąpiec E., Krąpiec M.

Geochronometria

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2005

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Vol. 24

41-51

EN

The presented dendrochronological research resulted in the construction of a pine standard for the Suwałki region, spanning the years 1582 . 2004 AD. The chronology was produced from 80 samples representing historical timbers and living trees. The historical timbers came from wooden structures of the churches in Sejny, Berżniki, Krasnopol, and Wieliczki, as well as from a few buildings in Suwałki, whereas the living-tree samples were taken in the Wigry National Park. The established chronology was compared with other regional standards for the neighbouring areas. The t-value for the compared standards fell in the range 6.2-18.9. Additionally, positive and negative signature years were defined. The over-four-hundred- year chronology opening possibilities of dating relevant timbers from architectural objects and archaeological excavations is a succeeding step in constructing of a multi-century pine standard for that region of Poland.

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Dendrochronological Scots pine standard (1110 - 1460 ad) for North-Eastern Poland

Szychowska-Krąpiec E., Krąpiec M.

Geochronometria

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2005

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Vol. 24

53-57

EN

The study presents preliminary results of investigations on construction of the regional dendrochronological standard for Scots pine (Pinus sylvestris L.) for NE Poland. The produced standard 2NPINA is 351 years long, spanning the period 1110-1460 AD. It is based on three local chronologies established from wood samples from Gdańsk (2GDAA1A; 1116 . 1460 AD), Ostróda (2OST1B; 1251 . 1411 AD), and Pułtusk (2PUAA1A; 1110 . 1408 AD). The chronologies presented display relatively high mutual similarities. The highest similarity was noted for the Gdańsk and Ostróda chronologies (t=6.36), somewhat lower for the Pułtusk and Ostróda (t=5.0), and the lowest one for the Pułtusk and Gdańsk patterns (t=4.67). Construction of the standard 2NPINA is the first step in establishing a several-hundred-year pine chronology for this region, hitherto beyond the extent of dendrochronological signal, which rendered unsuccessful any attempt of dating historical wood of pine.

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Dependence of radial growth of Pinus sylvestris L. from Western Pomerania on the rainfall and temperature conditions

Cedro A.

Geochronometria

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2001

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Vol. 20

69-74

EN

The paper deals with the influence of varying climatic conditions on radial growth of Scots Pine in the area of Western Pomerania. The research was aimed to evaluate the influence of air temperature and precipitation on dimensions of radial growth of the analysed tree species. The investigations demonstrated high dependence of the annual growth width upon temperature in winter and the beginning of spring. Precipitation influenced the annual growth in summer months, particularly in June and July. In the site with high level of ground water (very humid forest habitat) the rainfall had a negative effect on the annual growth width - contrary to the other analysed sites.