Wyniki wyszukiwania - Biblioteka Nauki

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RoS - a new database system in the Gliwice Radiocarbon Laboratory

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Piotrowska N. , Szczepanek M. , Pazdur A. , Zajadacz W.

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2004

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tom Vol. 23

51-57

EN

The idea of creating radiocarbon database came up in late 80.s. In this time the staff of the Gliwice Radiocarbon Laboratory started developing the local database GdRDB that should contain all dates of samples measured in this laboratory. This first database had a simple structure - only one file. Later modification of GdRDB database in 1994 introduced changes in its structure, and the modified database had seven files. The modification was made in order to adapt GdRDB to databases already existing (in Japan, Great Britain and Yugoslavia) and to make it match the standard established by the International Radiocarbon Database (IRDB). The new database system was developed in the Gliwice Radiocarbon Laboratory in 2002. This system consists of five relational databases containing all information about submitters and institutions, samples, sites and the dating process. The access to these databases and management of data is provided through an application called Register of Samples Editor (RoSE). The RoS system is supplied with the Data Analyse application enabling analyses of database content and Web Assistant programme, which generates web pages containing information about dated archival samples.

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Geochemical analysis and preparation the well abandonment projects on the Polana Ostre field

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Piotrowska N. , Tępka P. , Talar D.

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2013

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tom Vol. 30, no. 4

449--458

EN

This article covers the methodology of geochemical analysis, interpretation of results and solution that was proposed to abandon a depleted oil reservoir Polana Ostre, Poland. Polana Ostre as a reservoir was discovered in the 19th century and in 1870 the main facilities were built. Several dozens of wells were drilled and their depth varies between 60–497 m. Furthermore, on the field many hand‑drilled wells are located. Oil was produced through the 60 years with breaks. After the 2nd World War the facility was suddenly discarded due to political and economic reasons. As a result of inadequate operation, oil leakages can be observed. It causes an environmental pollution and a serious hazard. The remains were recognized and documented. A series of geochemical measurements were taken to indicate gas concentrations throughout the field. An analysis of the results showed significant concentrations of hydrocarbons in the soil. In order to mitigate the threat, a proper plug and abandonment operation of the deepest well was designed. Project executors hope to attract the attention of industry and academia to the problems depleted reservoirs that were not correctly abandoned.

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Upper Holocene development of vegetation and radiocarbon dating in the vicinity of the Cerhovka Brook (Bohemian-Moravian Uplands, Czech Republic)

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Břízová E. , Pazdur A. , Piotrowska N.

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tom Vol. 39, no. 4

251-261

EN

The paper reports the results of a palynological study of a newly exposed section in the peat sediments of Bezděkov site and its correlation with the previous palaeobotanical studies. The main goal was to elucidate the stratigraphic position and paleogeographic development of fossil peat bog and its environment in the Protected Landscape Area Žďárské vrchy and Železné hory in the Bohemian-Moravian Uplands. The development of peatbog vegetation, as shown by the pollen analysis and radiocarbon dating, took place in the Holocene. Pollen analyses provide evidence for occurrences of wetland assemblages with huge representation of alder wood in all the part of succession, followed by willow near the Cerhovka Brook. Alnus and Abies were the dominant trees during all the time. The deciduous forests consist of elm (Ulmus), oak (Quercus), lime tree (Tilia), maple (Acer) and hazel (Corylus). The mosaic picture of woodland and wetland, which covered this landscape during the Up-per Holocene, contrasts with the present day monotonous open lowland. Sediments of the peat bog provide information on the origin and vegetation evolution of this area.

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Carbon and oxygen isotope composition of organic matter and carbonates in recent lacustrine sediments

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Sensuła B. , Böttger T. , Pazdur A. , Piotrowska N. , Wagner R.

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tom Vol. 25

77-94

EN

The distribution of stable isotopes (18O and 13C) and radiocarbon in organic materials, carbonates and water samples collected from the environment of lacustrine sediments in Gościąż Lake (Central Poland) and Wigry Lake (NE Poland) were investigated. The oxygen and carbon isotopic analysis of terrestrial semi submerged and submerged plants, shells and water samples were compared with the results of the uppermost sediments from lakes. It was found that the concentration of isotopes in different components of organic and carbonate materials in lakes and their environments are reflected in isotope composition averaging of lakes sediments, whereas the isotope composition of plants and carbonate depends on biogeochemical factors. The research carried out revealed significant variations in the distribution of the stable isotopes and 14C in different elements of lacustrine ecosystem. We have analyzed mean values and variations of 14C concentration, δ18O, δ13C of plants, carbonates and the relationship between the total content of carbon and δ13C. In the case of plants, the isotope composition depends also on the physiognomy and the photosynthesis pathway. We noticed variations in δ13C and δ18O within plant tissues, variations in δ13C among whole tissue material and alphacellulose, carbon isotopic composition of photosynthetically fixed carbon and syntaxonomic dependences and then we compared the results of isotope composition of plants and carbonates in Wigry Lake and Gościąż Lake.

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Isotopic investigations of uppermost sediments from Lake Wigry (NE Poland) and its environment

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Pawlyta J. , Pazdur A. , Piotrowska N. , Poręba G. , Sikorski J. , Szczepanek M. , Król K. , Rutkowski J. , Hałas S.

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2004

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tom Vol. 23

71-78

EN

This paper presents the results of the first isotopic investigations of sediments recovered from Lake Wigry (NE-Poland). In the spring/summer 2002 few sediment cores, plant samples and water profiles were collected specially for isotopic investigations. We obtained 210Pb activity profiles, 137Cs activity profiles and 14C activity/age profiles. Apparent ages of carbonate fraction for all sediment cores were determined. Sedimentation rates for collected cores were estimated using 14C dating method. In addition oxygen isotopic ratios of the water profiles, carbon stable isotopes ratio of collected sediment cores were determined.

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Interdisciplinary studies of spring mire deposits from Radzików (South Podlasie Lowland, east Poland) and their significance for palaeoenvironmental reconstructions

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Dobrowolski R. , Pidek I. A. , Alexandrowicz W. P. , Hałas S. , Pazdur A. , Piotrowska N. , Buczek A. , Urban D. , Melke J.

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tom Vol. 39, no. 1

10-29

EN

The paper presents the results of interdisciplinary (multi-proxy) palaeoenvironmental studies of peat – calcareous tufa depositional sequences of spring mire from Radzików site (east Poland). Analyses of three biotic proxies (plant macrofossils, pollen, molluscs) were supplemented with sedi-mentological, geochemical, oxygen and carbon stable isotopes analyses and radiocarbon dating and used for reconstruction of environmental changes in Late Glacial and Holocene. The obtained results enable us to (1) reconstruct main phases of mire development and (2) determine environmental fac-tors influencing changes of water supply. The object started to develop in Allerød. The Late Glacial and Early Holocene deposit sequence is relatively thick (about 1.0 m), with good palaeoecological record. The boundary between Younger Dryas and Preboreal is especially well confirmed by palynological and malacological analyses as well as radiocarbon dating. The Mesoholocene deposits are considerably worse preserved. Mire develop-ment was evaluated in terms of general mire ecology.

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Luminescence chronostratigraphy for the loess deposits in Złota, Poland

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Moska P. , Adamiec G. , Jary Z. , Bluszcz A. , Poręba G. , Piotrowska N. , Krawczyk M. , Skurzyński J.

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2018

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tom Vol. 45, no. 1

44--55

EN

Loess formations in Poland display a close relationship with cooling and warming trends of the Northern Hemisphere during the Pleistocene. Loess sequences sensitively record regional palaeoclimatic and palaeoecological changes. The Złota loess profile (21°39’E, 50°39’N) provides a unique opportunity to reconstruct climate conditions in the past in this part of Poland. This continuous sequence of loess and palaeosol deposits allows to distinguish between warmer and more humid climate which is favourable for soil development and much colder and dry periods which are conducive to loess accumulation. The silty and sandy aeolian material originates mainly from weathered rock surfaces affected by frost shattering or from glaciofluvial/fluvial deposits of river flood plains. In Poland, loess and loess-like formations occur in the southern part of the country, mostly in the south polish uplands, i.e. in the Lublin, Sandomierz, and Cracow Uplands. We used different techniques to establish a chronological framework for this site. 21 samples for luminescence dating were collected from the investigated loess profile in Złota. Infrared post-IR IRSL dating method was applied to the polymineral fine grains (4–11µm). The dating results are accompanied by detailed analyses of the geochemical composition, organic carbon and carbonate. Also, analysis of magnetic susceptibility and grain-size distribution were investigated. Based on such a large stratigraphic dataset an age-depth model using OxCal has also been constructed for this site.