Results 161 to 170 of about 1,589 (212)

Neogene palynology and palynofacies of the eastern Niger delta, Nigeria

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Palynofacies changes and their reflection on preservation of peat accumulation stages in the Late Permian coal measures of the Bowen Basin, Australia: A new system for coal palynofacies characterisation

International Journal of Coal Geology, 2013
A high-resolution study (n = 66) was conducted on Late Permian coal measures of the Bowen Basin, Australia, to observe palynofacies changes during peat accumulation over time. Palynofacies were determined using polytopic vector analysis (PVA) to derive end members with variable compositions that reflected fine scale environmental changes, within and ...
João Graciano Mendonça Filho, Nikola Van de Wetering, Joan Esterle   +2 more
exaly   +6 more sources

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Palynofacies and sequence stratigraphy of the Aptian–Albian of the Sergipe Basin, Brazil

Sedimentary Geology, 2006
Abstract In order to place information from palynofacies variations in a sequence stratigraphic context, palynofacies analyses for wells GTP-17-SE and GTP-24-SE from the Sergipe Basin, was integrated with sequence stratigraphy. Previous works assigned the succession to two second-order sequences, K50 and K60, the last being subdivided into systems ...
João Graciano Mendonça Filho, Marcelo de Araújo Carvalho   +1 more
exaly   +2 more sources

Orbital forcing of palynofacies in the Jurassic of France and the United Kingdom

Geology, 1999
Palynofacies analysis of marine Jurassic sedimentary successions in France and the United Kingdom demonstrates the pervasiveness of regular cycles in qualitative and quantitative aspects of the microscopic particulate organic content of the rocks, especially that part which is ignored during routine palynology.
Waterhouse, H.K.
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Palynofacies analysis of the Permian–Triassic transition in the Amb section (Salt Range, Pakistan): Implications for the anoxia on the South Tethyan Margin

Journal of Asian Earth Sciences, 2012
The uppermost Chhidru Formation and the lower part of the Mianwali Formation were sampled in the Amb Valley, Salt Range, Pakistan for the study of the particulate organic matter (POM) content in order to evaluate the depositional environment during the
David Ware, Wolfram Kuerschner, Hugo Bucher   +2 more
exaly   +2 more sources

Palynofacies distribution in a lacustrine basin

Geobios, 2005
Abstract The Miocene basin of La Cerdanya (Pyrenees, Catalonia, Spain) consist of lacustrine diatomites and fan-deltaic (palustrine) lutites with lignites. A multidisciplinary analysis of palynofacies, organic geochemistry, taphofacies of plant macroremains and sedimentology was carried out in order to characterise taphonomically this basin ...
Carles Martín-Closas, Albert Permanyer, Maria-Jesús Vila   +2 more
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Object segmentation within microscope images of palynofacies

Computers & Geosciences, 2008
Identification of fossil material under a microscope is the basis of micropalentology. Our task is to locate and count the pieces of inertinite and vitrinite in images of sieve sampled rock. The classical watershed algorithm oversegments the objects because of their irregular shapes.
J. J. Charles, Ludmila I. Kuncheva, B. Wells, Ik Soo Lim   +3 more
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Source potential and palynofacies of Late Jurassic “Lemeš facies”, Croatia

Organic Geochemistry, 2009
Laminated limestone and calcareous shale outcrop samples from the Late Jurassic "Lemeš" facies (Croatia) were investigated to characterize their organic facies and palynofacies and their hydrocarbon generative potential.The results indicate that the organic-rich sediments of "Lemeš" facies were deposited within a relatively shallow marine environment ...
Blažeković Smojić, Snježana, Smajlović, Jasmin, Koch, Georg, Bulić, Jeronim, Trutin, Mladen, Oreški, Ernest, Alajbeg, Anđa, Veseli, Vladimir   +7 more
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Palynofacies in a Sequence Stratigraphic Context

1995
Sequence stratigraphy is a systematic way of looking at well established and familiar stratigraphic concepts such as eustatic cycles, transgression and regression, diachroneity, and progradation, retrogradation and aggradation. It represents a powerful methodology for modelling and analysing geometric, spatial and temporal patterns of sediment ...
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Some Practical Aspects of Palynofacies Analysis

1995
Much palynofacies work has been done as a secondary exercise within palynostratigraphic studies. Unfortunately, this often means that the samples were collected using a strategy that emphasizes standard sampling intervals and the selection of only those lithologies likely to be most productive in terms of palynomorph yield.
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