Zeszyty czasopisma

Tom 28 (2022): Zeszyt 1 (April 2022)

Tom 27 (2021): Zeszyt 3 (December 2021)

Tom 27 (2021): Zeszyt 2 (August 2021)

Tom 27 (2021): Zeszyt 1 (April 2021)

Tom 26 (2020): Zeszyt 3 (December 2020)

Tom 26 (2020): Zeszyt 2 (August 2020)

Tom 26 (2020): Zeszyt 1 (April 2020)

Tom 25 (2019): Zeszyt 3 (December 2019)

Tom 25 (2019): Zeszyt 2 (August 2019)

Tom 25 (2019): Zeszyt 1 (April 2019)

Tom 24 (2018): Zeszyt 3 (December 2018)

Tom 24 (2018): Zeszyt 2 (August 2018)

Tom 24 (2018): Zeszyt 1 (March 2018)

Tom 23 (2017): Zeszyt 3 (December 2017)

Tom 23 (2017): Zeszyt 2 (June 2017)

Tom 23 (2017): Zeszyt 1 (March 2017)

Tom 22 (2016): Zeszyt 3 (September 2016)

Tom 22 (2016): Zeszyt 2 (June 2016)

Tom 22 (2016): Zeszyt 1 (March 2016)

Tom 21 (2015): Zeszyt 4 (December 2015)

Tom 21 (2015): Zeszyt 3 (September 2015)

Tom 21 (2015): Zeszyt 2 (June 2015)

Tom 21 (2015): Zeszyt 1 (March 2015)

Tom 20 (2014): Zeszyt 4 (December 2014)

Tom 20 (2014): Zeszyt 3 (September 2014)

Tom 20 (2014): Zeszyt 2 (June 2014)

Tom 20 (2014): Zeszyt 1 (March 2014)

Tom 19 (2013): Zeszyt 4 (December 2013)

Tom 19 (2013): Zeszyt 3 (September 2013)

Tom 19 (2013): Zeszyt 1-2 (May 2013)
Heavy-mineral analysis as a tool in earth-scientific research

Tom 18 (2012): Zeszyt 4 (December 2012)

Tom 18 (2012): Zeszyt 3 (October 2012)

Tom 18 (2012): Zeszyt 2 (August 2012)

Tom 18 (2012): Zeszyt 1 (March 2012)

Tom 17 (2011): Zeszyt 4 (December 2011)

Tom 17 (2011): Zeszyt 3 (September 2011)

Tom 17 (2011): Zeszyt 2 (June 2011)

Tom 17 (2011): Zeszyt 1 (April 2011)

Tom 16 (2010): Zeszyt 4 (December 2010)

Tom 16 (2010): Zeszyt 3 (October 2010)

Tom 16 (2010): Zeszyt 2 (June 2010)

Tom 16 (2010): Zeszyt 1 (April 2010)

Tom 15 (2009): Zeszyt 3-4 (December 2009)

Informacje o czasopiśmie
Format
Czasopismo
eISSN
2080-6574
Pierwsze wydanie
24 Dec 2009
Częstotliwość wydawania
3 razy w roku
Języki
Angielski

Wyszukiwanie

Tom 20 (2014): Zeszyt 3 (September 2014)

Informacje o czasopiśmie
Format
Czasopismo
eISSN
2080-6574
Pierwsze wydanie
24 Dec 2009
Częstotliwość wydawania
3 razy w roku
Języki
Angielski

Wyszukiwanie

4 Artykułów
Otwarty dostęp

Kame or Moraine? A Sedimentological Study of a Glaciomarginal Landform at Niedźwiedziny (Great Polish Lowland)

Data publikacji: 23 Oct 2014
Zakres stron: 167 - 181

Abstrakt

Abstract

A sedimentary succession in a gravel pit at Niedźwiedziny was investigated in order to determine its origin: kame or moraine. The gravel pit is located in an isolated hill of approx. 600 m long and 250–400 m wide.

The succession is built of glaciofuvial deposits: a sandy/gravelly unit in the lower and middle parts, overlain by diam-icton. Five lithofacies have been distinguished, which represent two facies associations: (1) a fuvial association evolving from a high-energy to a transitional to a shallow braided river on an alluvial fan, and (2) an association of cohesive deposits representing a glacigenic mass fow. The interpretation is based mainly on palaeocurrent data and differs from conclusions by earlier investigators. The ice-marginal zone is characterised by a large variety of glaciomarginal forms. Their sedimentology, morphology and palaeogeography are determined by successive phases of deglaciation. The results of the present study show that the character of the deglaciation in the study area changed with time from frontal to areal deglaciation.

Słowa kluczowe

  • sedimentology
  • glaciomarginal zone
  • kame
  • Weichselian
  • Middle Poland
Otwarty dostęp

Petrographical Analysis of Warthian Fuvioglacial Gravels as a Tool to Trace the Source Area – A Case Study From Central Poland

Data publikacji: 23 Oct 2014
Zakres stron: 183 - 199

Abstrakt

Abstract

The petrographical features of the medium- and coarse-grained gravels (4-10 mm and 20-60 mm, respectively) of weathered and fresh (unweathered) deposits indicate, in combination with so-called indicator and statistical erratics, that two glacial lobes joined in the borderland of the Polish Lowlands and Uplands. Lower Palaeozoic limestones become less frequent in the fner gravel fraction, whereas crystalline rocks and fints become more frequent. The petrographical analysis of the coarser gravel fraction indicates that the ice sheet advanced from the NE to NNW (the Widawka lobe) and from the NE to ENE (the Rawka, Pilica and Luciąża lobes). The source areas of the gravel deposited by the Warthian ice sheet were magmatic and sedimentary areas of both the Baltic and the SE Sweden basins.

Słowa kluczowe

  • gravel petrography
  • indicator erratics
  • fuvioglacial deposits
  • Warthian stadial
  • central Poland
Otwarty dostęp

Geochemistry and Fuid-Inclusion Microthermometry of the Farsesh Barite Deposit, Iran

Data publikacji: 23 Oct 2014
Zakres stron: 201 - 214

Abstrakt

Abstract

The Permian carbonate-hosted Farsesh barite deposit is located southeast of the City of Aligudarz in the province of Lorestan, Iran. Structurally, this deposit lies in the Zagros metallogenic belt and the Sanandaj-Sirjan Zone. Barite mineralisations occur as open-space flling veins, and as massive and replacement ores along fractures, faults and shear zones of the Permian carbonate host rocks. In order to determine the structure, in addition to pe-trographic and fuid-inclusions studies, an ICP-MS analysis was carried out in order to measure the major as well as the trace and rare earth elements. The Farsesh barite deposit has a simple mineralogy, of which barite is the main mineral, followed by calcite, dolomite, quartz, and opaque minerals such as Fe-oxides. Replacement of bar-ite by calcite is common and is more frequent than space-flling mineralisation. Sulphide minerals are minor and mainly consist of chalcopyrite and pyrite, which are altered by weathering to covellite, malachite and azurite. Petrographic analysis and micro-thermometry were carried out on the two-phase liquid/vapour inclusions in ellipsoidal or irregularly shaped minerals ranging in size from 5–10 µm. The measurements were conducted on fuid inclusions during the heating and subsequent homogenisation in the liquid phase. The low homogenisation temperatures (200–125°C) and low to moderate salinity (4.2–20 eq wt% NaCl) indicate that the barite had precipitated from hydrothermal basinal water with low to moderate salinity. It appears from the major and trace elements that geochemical features such as Ba and Sr enrichment in the barite samples was accompanied by depletion of Pb, Zn, Hg, Cu and Sb. The geochemistry of the rare earth elements, such as low σREE concentrations, LREE-enrichment chondrite-normalised REE patterns, the negative Ce and positive Eu anomalies, the low Ce/La ratio and the positive La and Gd anomalies, suggest that the Farsesh barite was deposited from hydrothermally infuenced sea water. The Farsesh deposit contains low-temperature hydrothermal barite. The scatter plots of the barite (close to sea water) in different areas on the CeN/SmN versus CeN/YbN diagram support the possibility that the barite was formed from seawater-bearing hydrothermal fuids.

Słowa kluczowe

  • hydrothermal barite
  • ICP-MS analysis
  • geochemistry
  • fuid inclusions
  • Sanandaj-Sirjan Zone
  • Iran
Otwarty dostęp

Do the Available Data Permit Clarifcation of the Possible Dependence of Palaeozoic Brachiopod Generic Diversity Dynamics on Global Sea-Level Changes? A Viewpoint

Data publikacji: 23 Oct 2014
Zakres stron: 215 - 221

Abstrakt

Abstract

At a glance, progress in palaeontology and eustatic reconstructions in the past decade permits to prove or to disprove the possible dependence of Palaeozoic brachiopod generic diversity dynamics on global sea-level changes. However, the available diversity curve is of much lower resolution than the eustatic curve. This problem can be resolved by decreasing the resolution of the latter. The other restriction linked to the chronostratigraphical incompatibility of the available data allows to focus on the Middle Palaeozoic only. A series of mass extinctions and other biotic crises in the Silurian-Devonian does not allow to interpret correctly the results of direct comparison of the brachiopod generic diversity dynamics with global sea-level changes. With the available data, it is only possible to hypothesize that the eustatic control was not playing a major part in diversity dynamics of Middle Palaeozoic brachiopods. The resolution of the stratigraphic ranges of Palaeozoic brachiopods should be increased signifcantly, and these ranges should be plotted against the most up-to-date geologic time scale. Until this task will be achieved, it is impossible to judge about the existence of any dependence (either full or partial) of the Palaeozoic brachiopod diversity dynamics on global sea-level changes.

Słowa kluczowe

  • brachiopods
  • generic diversity
  • sea-level changes
  • Silurian
  • Devonian
4 Artykułów
Otwarty dostęp

Kame or Moraine? A Sedimentological Study of a Glaciomarginal Landform at Niedźwiedziny (Great Polish Lowland)

Data publikacji: 23 Oct 2014
Zakres stron: 167 - 181

Abstrakt

Abstract

A sedimentary succession in a gravel pit at Niedźwiedziny was investigated in order to determine its origin: kame or moraine. The gravel pit is located in an isolated hill of approx. 600 m long and 250–400 m wide.

The succession is built of glaciofuvial deposits: a sandy/gravelly unit in the lower and middle parts, overlain by diam-icton. Five lithofacies have been distinguished, which represent two facies associations: (1) a fuvial association evolving from a high-energy to a transitional to a shallow braided river on an alluvial fan, and (2) an association of cohesive deposits representing a glacigenic mass fow. The interpretation is based mainly on palaeocurrent data and differs from conclusions by earlier investigators. The ice-marginal zone is characterised by a large variety of glaciomarginal forms. Their sedimentology, morphology and palaeogeography are determined by successive phases of deglaciation. The results of the present study show that the character of the deglaciation in the study area changed with time from frontal to areal deglaciation.

Słowa kluczowe

  • sedimentology
  • glaciomarginal zone
  • kame
  • Weichselian
  • Middle Poland
Otwarty dostęp

Petrographical Analysis of Warthian Fuvioglacial Gravels as a Tool to Trace the Source Area – A Case Study From Central Poland

Data publikacji: 23 Oct 2014
Zakres stron: 183 - 199

Abstrakt

Abstract

The petrographical features of the medium- and coarse-grained gravels (4-10 mm and 20-60 mm, respectively) of weathered and fresh (unweathered) deposits indicate, in combination with so-called indicator and statistical erratics, that two glacial lobes joined in the borderland of the Polish Lowlands and Uplands. Lower Palaeozoic limestones become less frequent in the fner gravel fraction, whereas crystalline rocks and fints become more frequent. The petrographical analysis of the coarser gravel fraction indicates that the ice sheet advanced from the NE to NNW (the Widawka lobe) and from the NE to ENE (the Rawka, Pilica and Luciąża lobes). The source areas of the gravel deposited by the Warthian ice sheet were magmatic and sedimentary areas of both the Baltic and the SE Sweden basins.

Słowa kluczowe

  • gravel petrography
  • indicator erratics
  • fuvioglacial deposits
  • Warthian stadial
  • central Poland
Otwarty dostęp

Geochemistry and Fuid-Inclusion Microthermometry of the Farsesh Barite Deposit, Iran

Data publikacji: 23 Oct 2014
Zakres stron: 201 - 214

Abstrakt

Abstract

The Permian carbonate-hosted Farsesh barite deposit is located southeast of the City of Aligudarz in the province of Lorestan, Iran. Structurally, this deposit lies in the Zagros metallogenic belt and the Sanandaj-Sirjan Zone. Barite mineralisations occur as open-space flling veins, and as massive and replacement ores along fractures, faults and shear zones of the Permian carbonate host rocks. In order to determine the structure, in addition to pe-trographic and fuid-inclusions studies, an ICP-MS analysis was carried out in order to measure the major as well as the trace and rare earth elements. The Farsesh barite deposit has a simple mineralogy, of which barite is the main mineral, followed by calcite, dolomite, quartz, and opaque minerals such as Fe-oxides. Replacement of bar-ite by calcite is common and is more frequent than space-flling mineralisation. Sulphide minerals are minor and mainly consist of chalcopyrite and pyrite, which are altered by weathering to covellite, malachite and azurite. Petrographic analysis and micro-thermometry were carried out on the two-phase liquid/vapour inclusions in ellipsoidal or irregularly shaped minerals ranging in size from 5–10 µm. The measurements were conducted on fuid inclusions during the heating and subsequent homogenisation in the liquid phase. The low homogenisation temperatures (200–125°C) and low to moderate salinity (4.2–20 eq wt% NaCl) indicate that the barite had precipitated from hydrothermal basinal water with low to moderate salinity. It appears from the major and trace elements that geochemical features such as Ba and Sr enrichment in the barite samples was accompanied by depletion of Pb, Zn, Hg, Cu and Sb. The geochemistry of the rare earth elements, such as low σREE concentrations, LREE-enrichment chondrite-normalised REE patterns, the negative Ce and positive Eu anomalies, the low Ce/La ratio and the positive La and Gd anomalies, suggest that the Farsesh barite was deposited from hydrothermally infuenced sea water. The Farsesh deposit contains low-temperature hydrothermal barite. The scatter plots of the barite (close to sea water) in different areas on the CeN/SmN versus CeN/YbN diagram support the possibility that the barite was formed from seawater-bearing hydrothermal fuids.

Słowa kluczowe

  • hydrothermal barite
  • ICP-MS analysis
  • geochemistry
  • fuid inclusions
  • Sanandaj-Sirjan Zone
  • Iran
Otwarty dostęp

Do the Available Data Permit Clarifcation of the Possible Dependence of Palaeozoic Brachiopod Generic Diversity Dynamics on Global Sea-Level Changes? A Viewpoint

Data publikacji: 23 Oct 2014
Zakres stron: 215 - 221

Abstrakt

Abstract

At a glance, progress in palaeontology and eustatic reconstructions in the past decade permits to prove or to disprove the possible dependence of Palaeozoic brachiopod generic diversity dynamics on global sea-level changes. However, the available diversity curve is of much lower resolution than the eustatic curve. This problem can be resolved by decreasing the resolution of the latter. The other restriction linked to the chronostratigraphical incompatibility of the available data allows to focus on the Middle Palaeozoic only. A series of mass extinctions and other biotic crises in the Silurian-Devonian does not allow to interpret correctly the results of direct comparison of the brachiopod generic diversity dynamics with global sea-level changes. With the available data, it is only possible to hypothesize that the eustatic control was not playing a major part in diversity dynamics of Middle Palaeozoic brachiopods. The resolution of the stratigraphic ranges of Palaeozoic brachiopods should be increased signifcantly, and these ranges should be plotted against the most up-to-date geologic time scale. Until this task will be achieved, it is impossible to judge about the existence of any dependence (either full or partial) of the Palaeozoic brachiopod diversity dynamics on global sea-level changes.

Słowa kluczowe

  • brachiopods
  • generic diversity
  • sea-level changes
  • Silurian
  • Devonian

Zaplanuj zdalną konferencję ze Sciendo