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

2012 ◽  
Vol 39 (4) ◽  
pp. 252-261 ◽  
Author(s):  
Eva Břízová ◽  
Anna Pazdur ◽  
Natalia Piotrowska
Keyword(s):  
Czech Republic ◽  
Pollen Analysis ◽  
Radiocarbon Dating ◽  
Deciduous Forests ◽  
Peat Bog ◽  
The Holocene ◽  
Lime Tree ◽  
Stratigraphic Position ◽  
Palynological Study ◽  
Pollen Analyses

Abstract 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 Upper 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.

CONTRIBUTIONS TO THE HOLOCENE PALEOECOLOGY OF WESTCENTRAL CANADA: I. THE RIDING MOUNTAIN AREA

1964 ◽  
Vol 42 (2) ◽  
pp. 181-196 ◽  
Author(s):  
J. C. Ritchie
Keyword(s):  
Boreal Forest ◽  
Lake Sediment ◽  
Pollen Analysis ◽  
Deciduous Forests ◽  
Pollen Spectrum ◽  
Spruce Forest ◽  
Mountain Area ◽  
The Holocene ◽  
Carbon 14 ◽  
Spruce Wood

The results of pollen analysis of three sections of lake sediment, sampled in the Riding Mountain area of Manitoba, suggest a tentative division of each into four zones. The lower, interpreted as representing a closed white spruce forest, is followed by an apparently treeless episode tentatively interpreted as a grassland phase; this is followed by a zone which suggests indirectly the prevalence of deciduous forests, possibly dominated by poplar, birch, and oak. The development of the mixed boreal forest, which prevails today, is marked by a rise in the spruce and alder curves. The suggestion that the sections are post-Valders in age is corroborated to some extent by a carbon-14 age measurement of 9570 years from a sample of spruce wood excavated from the bottom of a filled-in kettle in the vicinity; associated gyttja yielded a pollen spectrum very similar to the I zones of the diagrams.

scholarly journals Reconstruction of vegetation in the foothills of the Carpathian Mountains, Gorgany region, in the late glacial (based on pollen data of peat-bog Pidluzhia)

2015 ◽  
pp. 333-340
Author(s):  
Natalia Chumak
Keyword(s):  
Key Words ◽  
Radiocarbon Dating ◽  
Environmental Changes ◽  
Younger Dryas ◽  
Late Glacial ◽  
Peat Bog ◽  
Pollen Data ◽  
Carpathian Mountains ◽  
The Holocene ◽  
Short Period

The environmental changes on short-period stages of the Late Glacial were reconstructed based on pollen data of peat-bog Pidluzhia deposits and their radiocarbon dating. There are the Older and Younger Dryas, the Allerod (three phases) are allocated on palynological data in the Late Glacial. Vegetation had evolved from cold meadows to pine forest during this time. The transition from the Late Glacial to the Holocene was identified by the emergence of broad-leaved trees (elm, oak and linden), the spreading of spruce and disappearance of xerophytic elements. Key words: paleovegetation, paleoclimate, palinology, the Late Glacial, the foothills of the Carpathian Mountains.

scholarly journals The Holocene vegetation dynamics and the formation of Neolithic and present-day Slovenian landscape

2001 ◽  
Vol 28 ◽  
pp. 133-175 ◽  
Author(s):  
Maja Andrič
Keyword(s):  
Pollen Analysis ◽  
Vegetation Dynamics ◽  
Radiocarbon Dating ◽  
Sedimentary Sequence ◽  
Vegetation Composition ◽  
Loss On Ignition ◽  
Vegetation Development ◽  
The Holocene ◽  
Study Sites ◽  
The Impact

This paper presents the results of palaeoecological research to investigate the Holocene vegetation development of the Slovenian landscape and the impact of the first farmers upon it. Four study sites were selected and at each site a complete Holocene sedimentary sequence was analysed by using the following techniques: loss-on-ignition, geochemistry, radiocarbon dating, pollen analysis and analysis of micro-charcoal concentration. The results of the study suggest that the Neolithic landscape was probably very dynamic and composed of small patches with different vegetation composition. This vegetation has no present-day analogues. The present-day Slovenian landscape formed only several millennia after the transition to farming.

The Geology of the Wicken Vision Area, lower Cam valley, Cambridgeshire, UK

2013 ◽  
Vol 92 (1) ◽  
pp. 47-59 ◽  
Author(s):  
S. Boreham
Keyword(s):  
Structural Geology ◽  
Cross Section ◽  
Cross Sections ◽  
Radiocarbon Dating ◽  
Landscape Development ◽  
The Holocene ◽  
Valley Fill ◽  
Pollen Analyses

AbstractThe geology of the Wicken Vision Area in the lower Cam valley is described with reference to a stacked series of ten cross-sections through Holocene and Pleistocene deposits, and Cretaceous/Jurassic bedrock across the region. A detailed cross-section through a Holocene palaeochannel, with radiocarbon dating and pollen analyses is also presented. The structural geology of the bedrock and the stratigraphic arrangement of the Pleistocene and Holocene deposits are used to describe landscape development for the area. This study offers a new understanding of the stratigraphy and context of the Holocene, Weichselian and earlier Pleistocene deposits of the lower Cam valley, and provides a unique view of sediment architecture in valley-fill sediments at the fen edge.

scholarly journals The stratigraphic position of a Pliocene tidal clay deposit at Grobbendonk (Antwerp Province, Belgium)

2001 ◽  
Vol 3 (3-4) ◽  
pp. 405-417 ◽  
Author(s):  
Noël VANDENBERGHE ◽  
Jacques HERMAN ◽  
Pieter LAGA ◽  
Stephen LOUWYE ◽  
Stijn DE SCHEPPER ◽  
...  
Keyword(s):  
The Netherlands ◽  
Pollen Analysis ◽  
Regional Analysis ◽  
Cold Climate ◽  
Formation Time ◽  
Clay Deposit ◽  
Stratigraphic Analysis ◽  
Stratigraphic Position

In a section located in Grobbendonk (Antwerp Campine area, Belgium) a tidal clay deposit is described which according to regional analysis could correlate with the Kruisschans Member of the Pliocene Lillo Formation. Mollusc and fish fossils point to a colder climate during the deposition of the Kruisschans Sand. A pollen analysis of the Grobbendonk clay shows that it was formed during a cold climate, either during the Pretiglian or during the Pliocene. The latter possibility is preferred because of the regional stratigraphic analysis and the absence of marine Pretiglian in the area. A dinoflagellate study of the Grobbendonk clay compares the stratigraphic position of the clay to the Waltonian, Pre-Ludhamian, Ludhamian regional stages of the U.K. Because of the cold climate during the deposition a Pre-Ludhamian formation time is preferred. This Pre-Ludhamian in the U.K. is correlated with the Reuver C or with the Praetiglian regional stages in the Netherlands.

scholarly journals Timing of Medieval Fluvial Aggradation at Bremgarten in the Southern Upper Rhine Graben – a Test for Luminescence Dating

2009 ◽  
Vol 57 (3/4) ◽  
pp. 411-432
Author(s):  
Manfred Frechen ◽  
Dietrich Ellwanger ◽  
Daniel Rimkus ◽  
Astrid Techmer
Keyword(s):  
Little Ice Age ◽  
Radiocarbon Dating ◽  
Experimental Studies ◽  
Luminescence Dating ◽  
Ice Age ◽  
Upper Rhine Graben ◽  
River Rhine ◽  
Fluvial Sediments ◽  
The Holocene ◽  
Short Period

Abstract. The Holocene flood plain of the River Rhine is a complex dynamic sedimentary system. A series of geochronological results for the Bremgarten section including optically stimulated luminescence (OSL) and radiocarbon dating was determined to improve the understanding of part of the Holocene evolution of the River Rhine. The applied single aliquot regenerative (SAR) protocols and the applied experimental studies to find the best luminescence behaviour leave us with confidence that OSL dating is a suitable method for dating fluvial sediments from large river systems. Insufficient bleaching of the sediments from Bremgarten prior to deposition seems to be not as dramatic as previously thought. OSL and radiocarbon dating results give evidence for a short period of major erosion and re-sedimentation of fluvial sediments from the “Tiefgestade” at the Bremgarten section between 500 and 600 years before present. This time period correlates with the beginning of the Little Ice Age at about AD 1450. Several severe floods occurred in Southern Germany between AD 1500 and 1750; all those floods correlate to the period of the Little Ice Age, including the destruction of the village of Neuenburg AD 1525.

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