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Artículos de revistas sobre el tema "Palynological analysis"

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Publicado: 10 de marzo de 2023

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1

Ivanina, Antonina V. "Famenian palynostratigraphy of the Volyn–Podillya margin of the East–Europian platform". Вісник Дніпропетровського університету. Геологія, географія 26, n.º 1 (30 de marzo de 2018): 71–78. http://dx.doi.org/10.15421/111808.

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Famenian carbonate-terrigenous deposits with thickness іn 300-580 m are widely distributed within the Volyn-Podillia margin of the East-European platform. It is the facies-varying complex of rocks, the stratification of which is very difficult because there are no faunal remains in the sediments (with the exception of the lower part). Therefore, during the study of this stratum, the palynological method and the palynostratigraphic division are very important. The main purposes of this study are to identify palynozones, distinguish their generalized description and to create a local scale of the palynological zonation - the vertical succesion of biozones. The material for research consists of more than 450 samples, selected from 31 boreholes. The main method is the facial-palynological analysis, or the method of palynoorictocenosis. This is the first study to perform the standardized description of the biostratigraphic units determined by the palynological data for the Famennian of the Volyn-Podillia margin of the East-European platform. In general, five palynozones are allocated in the Famennian. All palynozones are comprehensively documented thanks to numerous palynological data, characterized by a zonal spore assemblage, in the structure of which there are following categories of taxa: based on the vertical range characteristics - key, characteristic, transit ones; on the content - subdominant, accessory. According to spreading peculiarities of key and characteristic species the following types of bio-units are identified: the Range-Zone (two units) and the Concurent-Range Zone (three ones). General the Famenian deposits of the Volyn-Podillia margin of the East-European platform were palynologically subdivided into lebedianensis–magnificus (the oldest zone), varicornata, cassis–lupinovitchi, versabilis –hamulus, lepidophyta (the youngest unit) miospore zones. Palynozones with a thickness from 17 to 231 m are laterally widespreaded, recorded from a number of boreholes within Volyn-Podillya. They have a set of palynological features that allow easy recognition of deposits. Palynozones detail the sequence bedding, complement the paleontological characteristic and form the local palynological zonal scheme of the Famenian of the Volyn-Podillia margin of the East-European platform.

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2

Skvarla, John J., John R. Rowley y Edward L. Vezey. "ANALYSIS OF THE THANIKAIMONI PALYNOLOGICAL INDICES". TAXON 38, n.º 2 (mayo de 1989): 233–36. http://dx.doi.org/10.2307/1220838.

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3

Barth, Ortrud Monika y Cynthia Fernandes Pinto Da Luz. "Palynological analysis of Brazilian geopropolis sediments". Grana 42, n.º 2 (junio de 2003): 121–27. http://dx.doi.org/10.1080/00173130310012512.

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4

Aira, M. J., H. Horn y M. C. Seijo. "Palynological analysis of honeys from Portugal". Journal of Apicultural Research 37, n.º 4 (enero de 1998): 247–54. http://dx.doi.org/10.1080/00218839.1998.11100979.

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5

Bunting, M. Jane, Barry G. Warner y Clayton R. Morgan. "Interpreting pollen diagrams from wetlands: pollen representation in surface samples from Oil Well Bog, southern Ontario". Canadian Journal of Botany 76, n.º 10 (1 de octubre de 1998): 1780–97. http://dx.doi.org/10.1139/b98-158.

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Pollen and spore analysis of surface sediment samples from 45 points within Oil Well Bog, a coniferous swamp near Cambridge, Ontario, was used to determine the possibility of identifying different wetland vegetation communities from their palynological record, and to assess the effects of variable wetland vegetation on the pollen representation of surrounding upland communities. The data obtained were mapped for individual taxa to allow direct comparison of the spatial patterns of vegetation abundance and the associated palynological assemblages, and cluster analysis was used to identify palynologically similar assemblages. Some wetland communities, such as swamp dominated by black spruce, do have distinctive pollen signatures, but not all the vegetational diversity observed is reflected in the palynological data, with similar pollen assemblages deriving from some communities which are vegetationally very different (e.g., shrub swamps dominated by Chamaedaphne calyculata and Ilex verticillata). The wetland pollen assemblages do reflect much of the floristic diversity of the surrounding uplands, although the different communities receive varying proportions of their pollen influx from upland sources (varying from less than 5% to over 90%), and wide variations in the percentage of a given upland pollen morphotype can be found within quite a short distance, depending on the nature of local wetland communities.Key words: palynology, swamp, surface samples, wetland.

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6

Dimitrova, Tatyana. "Palynological analysis of the deposit Fosso Bianco, Central Italy". Geologica Balcanica 27, n.º 1-2 (30 de agosto de 1997): 101–4. http://dx.doi.org/10.52321/geolbalc.27.1-2.101.

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The palynological analysis of the Fosso Bianco section is based on the data obtained from 23 samples. Most of the samples contain polydominant and very rarely monodominant forest components. The palynological documentation is based on a classification of some well-known paleoflora groups. The comparative characteristics of the pollen spectra are based mainly on the data of the boundary Pliocene/Pleistocene in Central Italy.

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7

Marquez, Gonzalo J., Marta A. Morbelli y Gabriela E. Giudice. "Palynological analysis of Sphaeropteris gardneri (Cyatheaceae, Pteridophyta)". Anais da Academia Brasileira de Ciências 82, n.º 2 (junio de 2010): 361–67. http://dx.doi.org/10.1590/s0001-37652010000200012.

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The spore morphology and wall ultrastructure of Sphaeropteris gardneri (Hook.) R.M. Tryon from Brazil were analyzed with LM, SEM and TEM. The spores are trilete with an ornamentation formed of short low ridges with spines in their margins. The exospore is 2.5μm thick, two- layered in section and single or branched channels are present. The perispore is 1.2μm thick and two-layered. The inner layer has three strata: the inner stratum is formed of a network of branched and fused threads, the middle stratum has threads with a radial orientation and in the outer stratum thin, dark fibres are immersed in a less dense contrasted matrix. The outer layer of the perispore is the one that forms the echinate-ridges and is constituted of threads arranged in a compact way. Globules of different sizes are observed on the surface. The differences found in the perispore ornamentation and ultrastructure in Alsophila, which was previously studied, and those of Sphaeropteris, show a tendency to wall complexity.

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8

Barth, Ortrud Monika y Cynthia Fernandes Pinto da Luz. "Palynological analysis of Brazilian red propolis samples". Journal of Apicultural Research 48, n.º 3 (enero de 2009): 181–88. http://dx.doi.org/10.3896/ibra.1.48.3.06.

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9

de Freitas, Alex da Silva, Ortrud Monika Barth, Érika de Oliveira Sales, Adriana Hitomi Matsuda y Ligia Bicudo de Almeida-Muradian. "A palynological analysis of Brazilian propolis samples". Journal of ApiProduct and ApiMedical Science 3, n.º 2 (1 de abril de 2011): 67–74. http://dx.doi.org/10.3896/ibra.4.03.2.01.

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10

Orlóci, L., V. D. Pillar y M. Anad. "Multiscale analysis of palynological records: new possibilities". Community Ecology 7, n.º 1 (junio de 2006): 53–67. http://dx.doi.org/10.1556/comec.7.2006.1.6.

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11

Richard, Hervé. "Palynological Micro-Analysis in Neolithic Lake Dwellings". Journal of Archaeological Science 20, n.º 3 (mayo de 1993): 241–62. http://dx.doi.org/10.1006/jasc.1993.1017.

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12

de Oliveira, Marcelo Accioly Teixeira, Jorge Luis Porsani, Gisele Leite de Lima, Vivian Jeske-Pieruschka y Hermann Behling. "Upper Pleistocene to Holocene peatland evolution in Southern Brazilian highlands as depicted by radar stratigraphy, sedimentology and palynology". Quaternary Research 77, n.º 3 (mayo de 2012): 397–407. http://dx.doi.org/10.1016/j.yqres.2011.12.006.

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Paleoenvironmental interpretation of proxy data derived from peatlands is largely based upon an evolutionary model for ombrotrophic bogs, in which peat accumulates in still environments. Reports on proxies obtained from minerotrophic fens, where hydrologic inputs are variable, are less common. In this study, a highland peatland in southern Brazil is presented through ground penetrating radar (GPR) and sedimentological, palynological and geochronologic data. The radar stratigraphic interpretation suggests a relatively complex history of erosion and deposition at the site since the beginning of Marine Isotope Stage 3 (MIS 3) interstadial period. In spite of this, radar stratigraphic and palynologic interpretations converge. Electromagnetic reflections tend to group in clusters that show lateral coherence and correlate with different sediment types, while pollen grains abound and are well preserved. As a result, the study of minerotrophic fens provides a source of proxies, suggesting that ombrotrophic bogs are not the only reliable source of data in wetlands for palynological analysis.

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13

Tripathi, S. K. M. y Divya Srivastava. "Palynological investigations, facies analysis and palaeoenvironmental interpretations from Late Palaeocene to Early Eocene lignites and associated sediments of Barmer, western India". Journal of Palaeosciences 59, n.º (1-3) (31 de diciembre de 2010): 1–32. http://dx.doi.org/10.54991/jop.2010.185.

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A lignite bearing sequence located in an open-cast mine near Banner, Rajasthan, western India, identified as Akli Formation is investigated for palynological and palynofacies studies. The palynoflora from about 13.5 mthick succession mainly comprised of clay, shale and lignite, composed of spore/pollen, dinoflagellate cysts and fungal remains, is dominated by angiospermic pollen particularly those showing affinity with the family Arecaceae. The succession, palynologically divisible into three zones, is dated as Thanetian to Ypresian in age. Studies on the dispersed organic matter isolated from macerated residues indicate prevalence of anoxic conditions during deposition of lower part of the sequence which progressively changed into moderately oxic depositional conditions.

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14

Aleshinskaya, Anna, Anna Babenko, Maria Kochanova y Alla Troshina. "Opportunities and Features of the Palynological Analysis Application on Various Types of Archaeological Sites". Stratum plus. Archaeology and Cultural Anthropology, n.º 6 (30 de diciembre de 2021): 361–76. http://dx.doi.org/10.55086/sp216361376.

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A wide variety of archaeological sites associated with various human activity has led to the emergence of a wide range of problems solved by archaeological palynology. On the example of the palynological materials accumulated in the Laboratory of Nature Sciences of the Institute of Archaeology of the Russian Academy of Sciences, the opportunities and features of the palynological analysis application are considered both on classical objects for Russian archaeopalynology (cultural layer, buried soils, defensive ramparts, burial mounds, etc.) and on non-traditional ones (latrines, vessels, funerary objects, ceramics, etc.). It is shown that the reconstruction of the natural environment, generally accepted for palynology, is mainly possible for the materials from long timed sites of shepherds in caves and rock shelters and cultural layers of sites, settlements, hillforts. Materials obtained from other objects (ancient and medieval arable lands, storage pits, latrines, the contents of ritual objects, vessels, and the gastrointestinal tract of the buried) give an idea of very local and short-term environmental conditions or events usually associated with economic and/or daily activities of a person, with his food, funerary rites and traditions. In this regard, the possibilities of the palynological method and the purposes will be different for each specific research. Recommendations for the sampling for palynological analysis are given for each specific case.

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15

Morbelli, Marta A. y Irma G. Michelena. "Palynological analysis ofCheilanthesSpecies (Adiantaceae-Pteridophyta) of Northwestern Argentina". Grana 28, n.º 4 (diciembre de 1989): 295–304. http://dx.doi.org/10.1080/00173138909427442.

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16

Scott, L. y C. B. Bousman. "Palynological analysis of hyrax middens from Southern Africa". Palaeogeography, Palaeoclimatology, Palaeoecology 76, n.º 3-4 (enero de 1990): 367–79. http://dx.doi.org/10.1016/0031-0182(90)90121-m.

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17

Černjavska, Svetlana. "Palynological analysis of samples from the Padala Formation". Geologica Balcanica 30, n.º 1-2 (30 de junio de 2000): 18. http://dx.doi.org/10.52321/geolbalc.30.1-2.18.

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18

Lelono, Eko Budi. "Pollen Record Of Early/ Middle Miocene Boundary In The South Sumatra Basin". Scientific Contributions Oil and Gas 32, n.º 2 (17 de marzo de 2022): 71–81. http://dx.doi.org/10.29017/scog.32.2.836.

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Early to Middle Miocene sediment obtained from three wells drilled in South Sumatera area has been evaluated for its micropaleontological content including foraminifera, calcareous nannoplankton and palynomorph. The boundary of Early/ Middle Miocene is clearly represented by zone N8/ N9 boundary based on foraminiferal analysis and zone NN4/ NN5 boundary on the basis of calcareous nannoplankton analysis. The rich assemblage of foraminifera and calcareous nannoplankton indicates the occurrence of marine sediment within the well sections. In addition, environmental markers of benthonic foraminifera suggest the occurrence of inner to middle neritic along the studied sections. Palynological analysis however, proves the high occurrence of pollen and spore along the marine successions situated in Early/ Middle Miocene boundary which is the first time to yield a good quality of palynological record. The Early/ Middle Miocene boundary is marked by low sea level in global sea level curve as indicated by significant decrease of foraminifera and calcareous nannoplankton. In addition, palynological record reflects climatic changes over N8/ N9 sediment marking Early/ Middle Miocene boundary with the declines of pollen assemblage suggesting seasonal/ dry climate condition. N8 sediment shows high abundance and diversity of palynomorphs including those of wet climate markers. Palynological assemblage drops gradually approaching foram zone N9/ N8 boundary, whilst seasonal climate indicators increase. On the other hand, palynological record recovers its assemblage over N9 sediment.

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19

Ferraz-vicentini, K. R. y M. L. Salgado-Labouriau. "Palynological analysis of a palm swamp in Central Brazil". Journal of South American Earth Sciences 9, n.º 3-4 (mayo de 1996): 207–19. http://dx.doi.org/10.1016/0895-9811(96)00007-7.

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20

Velázquez, Nadia Jimena, Lidia Susana Burry y Martín Horacio Fugassa. "Palynological analysis of extinct herbivore dung from Patagonia, Argentina". Quaternary International 377 (agosto de 2015): 140–47. http://dx.doi.org/10.1016/j.quaint.2015.05.012.

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21

Willems, Cees J. L., Andrea Vondrak, Dirk K. Munsterman, Marinus E. Donselaar y Harmen F. Mijnlieff. "Regional geothermal aquifer architecture of the fluvial Lower Cretaceous Nieuwerkerk Formation – a palynological analysis". Netherlands Journal of Geosciences 96, n.º 4 (diciembre de 2017): 319–30. http://dx.doi.org/10.1017/njg.2017.23.

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AbstractThe primary challenge for efficient geothermal doublet design and deployment is the adequate prediction of the size, shape, lateral extent and thickness (or aquifer architecture) of aquifers. In the West Netherlands Basin, fluvial Lower Cretaceous sandstone-rich successions form the main aquifers for geothermal heat exploitation. Large variations in the thickness of these successions are recognised in currently active doublet systems that cannot be explained. This creates an uncertainty in aquifer thickness prediction, which increases the uncertainty in doublet lifetime prediction as it has an impact on net aquifer volume. The goal of this study was to improve our understanding of the thickness variations and regional aquifer architecture of the Nieuwerkerk Formation geothermal aquifers. For this purpose, new palynological data were evaluated to correlate aquifers in currently active doublet systems based on their chronostratigraphic position and regional Maximum Flooding Surfaces. Based on the palynological cuttings analysis, the fluvial interval of the Nieuwerkerk Formation was subdivided into two successions: a Late Ryazanian to Early Valanginian succession and a Valanginian succession. Within these successions trends were identified in sandstone content. In combination with seismic interpretation, maps were constructed that predict aquifer thickness and their lateral extent in the basin. The study emphasises the value of palynological analyses to reduce the uncertainty of fluvial hot sedimentary aquifer exploitation.

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22

Trainor, Jessica, Jeffery Goodall y Kathryn Amos. "Stratigraphy of the Birdrong: an integrated approach". APPEA Journal 52, n.º 2 (2012): 684. http://dx.doi.org/10.1071/aj11098.

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A detailed study of the Early Cretaceous Birdrong Sequence (S. areolata - P. burgeri) has been undertaken in the East Spar and Woollybutt fields, which lie in the northern end of the Barrow Delta complex in the Barrow Sub-basin, Northern Carnarvon Basin. This project integrates palynological, sedimentological and seismic stratigraphic interpretations to progress our understanding of the way in which the Barrow Delta evolved. The results will help develop remaining hydrocarbon prospectivity in the northern Barrow area. Palynological analysis within the Helby, Morgan and Partridge (2004) zonation scheme for the North West Shelf has enabled the identification of several significant biostratigraphic events, which have allowed further subdivision of the existing broad palynological zones. These palynological events represent influxes of specific dinoflagellate cyst taxa that may be tied to key stratal surfaces. These surfaces include transgressive ravinement surfaces, sequence boundaries and flooding surfaces. The palynological and sedimentological data, when combined, indicate a strong facies relationship between specific taxa and interpreted depositional environment. Such taxa include Gagiella, freshwater and brackish algae, and fully marine dinoflagellate cysts including Kaiwaradinium scrutillinum, Systematophora areolata, Phoberocysta neocomica and Cribroperidinium muderongense. The integration of sedimentology and palynology provides a powerful tool in interpreting depositional systems in shallow marine palaeoenvironments. Initial results indicate this may be used as a predictive tool for reservoir correlation and facies modelling. Key stratal surfaces identified through palynological and sedimentological study will be tested against 3D seismic to understand fully the stratigraphy of the study interval.

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23

Fadiya, S. L., S. O. Ogunleye, A. B. Oyelami y F. R. Aroyewun. "Palynostratigraphic and palynofacies analysis of x and y wells, offshore Niger Delta, Nigeria". Ife Journal of Science 22, n.º 3 (25 de enero de 2021): 25–42. http://dx.doi.org/10.4314/ijs.v22i3.2.

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A detailed palynostratigraphic and palynofacies study was carried out on two shallow offshore wells, codenamed Well X and Well Y, from the Niger Delta Basin, Nigeria. The study is aimed at establishing the age and palaeoenvironment of the sedimentary sequences penetrated by the wells. Standard palynological/palynofacies laboratory procedures were used to free the palynomorphs and palynomacerals from the embedding matrices.Prepared palynological slides were studied using the Leitz Ortholux II transmitted light microscope. The palynofloral assemblages recorded from the two well sequences include well-preserved palynomorphs such as Zonocostites ramonae, Monoporites annulatus, Retitricolporites irregularis, Cyperaceaepollis sp., Echitricolporites spinosus and Nymphaeapollis clarus among others. The recognition of diagnostic pollen of Cyperaceaepollis sp. and Nymphaeapollis clarus as well as the associated palynomorph assemblage aided the delineation of the well sequences into the P830, P840-P850 and P860 subzones of the P800 palynological zone in the late Miocene. The relative abundance of particulate organic matter (Amorphous Organic Matter (AOM), Phytoclasts and Palynomorphs) revealed the delineation of three palynofacies assemblages, PF-A, PF-B and PF-C, suggesting three distinct paleoenvironments of deposition. These paleoenvironments range from distal shelf through marginal to proximal with varying conditions from oxic, suboxic to anoxic, thus suggesting marginal marine to coastal deltaic environments of deposition for the sedimentary sequences penetrated by the two wells. Keywords: Late Miocene, Niger Delta, Paleoenvironment, Palynostratigraphy, Palynofacies.

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Ganga, M., J. Lakshmi, N. Manivannan y K. Rajamani. "Palynological investigations in Jasminum spp." Journal of Horticultural Sciences 15, n.º 2 (31 de diciembre de 2020): 183–90. http://dx.doi.org/10.24154/jhs.2020.v15i02.010.

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The present investigation was carried out at the Department of Floriculture and Landscape Architecture, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore during 2017-2019. The study involved nine jasmine genotypes, four falling under the commercially cultivated types and five belonging to underutilized species or ‘lesser-known species’. The study was undertaken to investigate and document the palynological parameters of jasmines which could serve as a reliable reference for future jasmine breeding programmes. The palynological investigations were carried out using Scanning Electron Microscopy (SEM), haemocytometry, acetocarmine test, and in vitro pollen germination. The pollen morphology analysis indicated wide variation among the species for the shape of the pollen grain, ranging from tricolpate to prolate; the exine ornamentation was reticulate in all the genotypes. Pollen output was the highest in J. rigidum (28,660 pollen/flower) and the lowest in (625 pollen/ flower) in J. sambac cv. Ramanathapuram Gundumalli. The maximum pollen germination rate and pollen tube length were recorded in J. rigidum.

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25

Singh, Vartika y Sophia Barinova. "Palynological Analysis of Surface Sediments in a High Arctic Pond, Revealing Desmids as Indicators of Wetlands and Climate Change". Transylvanian Review of Systematical and Ecological Research 24, n.º 1 (1 de abril de 2022): 1–16. http://dx.doi.org/10.2478/trser-2022-0001.

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Abstract This is a first attempt to study the palynological remains from the surface sediments of a pond near the Kongsfjorden coast in Ny-Alesund, Svalbard, Norway. The palynomorphs display a high relative abundance of desmids, Cladocera, thecamoebians, chironomids, and fungal remains inherent to the inland aquatic ecosystem. The Cosmarium indicators characterize water as neutral pH, fresh, mesotrophic, without organic pollution, Class 2 of Water Quality as in wetlands with coastal vegetation. The single procedure of palynological analysis excluding the acetolysis step, and bioindicators allows us to perceive the basic framework of the ecosystem, consisting of in-situ and transported remains. This approach could be effectively used for paleoenvironmental reconstructions in High Arctic Regions.

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Madeja, Jacek y Dariusz Latowski. "Too Old AMS Radiocarbon Dates Obtained from Moss Remains from Lake Kwiecko Bottom Sediments (N Poland)". Geochronometria 32, n.º -1 (1 de enero de 2008): 13–19. http://dx.doi.org/10.2478/v10003-008-0029-2.

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Too Old AMS Radiocarbon Dates Obtained from Moss Remains from Lake Kwiecko Bottom Sediments (N Poland)The paper presents the results of the AMS radiocarbon dating of moss macrofossils which seem to be too old in the context of palynological data. The lack of agreement between the obtained results of radiocarbon dating and pollen analysis has been discussed. Some possible causes of the discrepancies between the results of radiocarbon dating and palynological dating have been given.

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Fukuda, Tomoko y Hiroshi Ikeda. "Palynological analysis and taxonomic position of the genus Mertensia (Boraginaceae)". Botany 90, n.º 8 (agosto de 2012): 722–30. http://dx.doi.org/10.1139/b2012-024.

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Palynological analysis of the genus Mertensia Roth, s. lat. (Boraginaceae) was performed. All pollen grains studied were mostly dumbbell shaped and had 6-heteroaperturate pollen type without exception. The type of pollen of Mertensia does not contradict recent classifications that assign Mertensia to Cynoglosseae. Among six sections of Mertensia, pollen grains of section Oreocharis (the Himalayan Mertensia) were different from those of other sections in having granulate sculpturing on the colpus and pseudocolpus membranes. The results, along with other morphological differences, may support Riedl’s treatment of the Himalayan species of Mertensia in the distinct genus Pseudomertensia Riedl. Of the other sections, four monotypic sections (sections Steenhanmera, Neuranthia, Typomertensia, and Mertensianthe) showed pollen structures similar to each other. Pollen grains in section Eumertensia had some variations in size and ornamentation, especially in the species distributed in western North America.

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Reis, Carina I. C., Maria João Coimbra-Dores, Maria Teresa Rebelo y Mafalda S. Faria. "Palynological analysis of soil in Portugal: potential for forensic science". Palynology 43, n.º 4 (27 de noviembre de 2018): 585–95. http://dx.doi.org/10.1080/01916122.2018.1503199.

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Sihombing, F. M. H., S. Sirait, A. Purnomo, D. Sulistiowati y T. L. Indra. "Palynological analysis to infer environmental dynamics of Muarajambi Temple compound". IOP Conference Series: Earth and Environmental Science 538 (29 de julio de 2020): 012053. http://dx.doi.org/10.1088/1755-1315/538/1/012053.

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Arguelles, Paulette, Karl Reinhard y Dong Hoon Shin. "Forensic Palynological Analysis of Intestinal Contents of a Korean Mummy". Anatomical Record 298, n.º 6 (22 de mayo de 2015): 1182–90. http://dx.doi.org/10.1002/ar.23141.

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Lelono, Eko Budi. "Stratigraphic Interpretation Of The Middle Miocene Deltaic Sediment In The Sangatta Area, Based On Quantitative Palynological Data". Scientific Contributions Oil and Gas 26, n.º 2 (30 de marzo de 2022): 2–16. http://dx.doi.org/10.29017/scog.26.2.876.

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This study demonstrates the ability of palynology in helping explorationist to comprehend the stratigraphic framework of the middle Miocene formation in the Sangatta area. Palynological analysis is performed on three different wells which are called X, Y and Z. With the exception of the samples situated in the lower part of the studied wells, most samples yield excellent palynomorph assemblages. High abundance of mangrove pollen suggests a good development of mangrove forest which indicates the occurrence of deltaic sediments within these three wells. The studied wells have been correlated based on the abundance of mangrove pol- len Zonocostites ramonae and freshwater swamp pollen Ilexpollenites sp. This correlation allows reconstruction of the local palynological scheme for the Sangata area. The combination between quantitative palynological analysis and litological data (inferred from well logs) allows interpretation of sequence stratigraphic units including transgressive and highstand units. These units separate the studied sediments into three progradational units (Units 1, 2 and 3) which figure out the development of Middle Miocene deltaic facies in the Sangata area.

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32

Rull, V., E. Montoya, S. Nogué y O. Huber. "Preliminary palynological analysis of a Holocene peat bog from Apakará-tepui (Chimantá Massif, Venezuelan Guayana)". Collectanea Botanica 30 (23 de diciembre de 2011): 79–88. http://dx.doi.org/10.3989/collectbot.2011.v30.008.

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33

Lelono, Eko Budi y Robert J. Morley. "Oligocene Palynological Zonation Scheme From East Java Sea". Scientific Contributions Oil and Gas 34, n.º 2 (14 de marzo de 2022): 95–104. http://dx.doi.org/10.29017/scog.34.2.797.

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Systematic biostratigraphic analyses have been undertaken on the Oligocene clastic and carbonate Kujung Formation from the East Java Sea, North of Madura. The succession has been examined mainly using cutting samples in two wells, using a combination of foraminiferal, nannofossil and palynological analyses at regular spacing. Nannofossil analysis indicates that the Late Oligocene to basal Early Miocene succession is more or less complete, with zones NP24, NP25 and NN1 are all being well developed. In addition, the Early Oligocene is indentified by larger foraminifera indicating the Tc/ Td Letter Stage. Because the traditional palynological zonation of Morley (1978) does not work well in this area, the succession has been divided into broad assemblage zones, which appear to be controlled mainly by climate. These zones are OL-1, OL-2, OL-3, OL-4 and OL-5. Zone OL-1 is based essentially on the absence of seasonal climate and riparian elements, whilst zone OL-2 is characterized by the regular occurrence of seasonal climate elements, especially of Malvacipollis diversus. Zone OL-3 is indicated by common to abundant Dacrydium and Casuarina pollen, with a strong acme of dinoflagellate cysts dominated by Operculodinium spp. and Spiniferites spp., whereas zone OL-4 is marked by abundant Dacrydium and regular Casuarina pollen, but low representation of riparian elements. Finally, the youngest zone is OL-5 which is characterized by reduced Dacrydium and Casuarina pollen, and increased riparian elements. The above palynological zonation suggests climate change, which closely parallels the climate succession from West Java Sea (but with changes less pronounced). Therefore, this study provides a well dated Oligocene palynological zonation which can be applied across Java.

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34

Buratti, Nicoletta, Dorra Mehdi, Simonetta Cirilli, Fekri Kamoun y Moncef Mzoughi. "A Carnian (Julian) microflora from the Djerba Melita 1 Borehole (Gulf of Gabes, South-Eastern Tunisia)". Micropaleontology 58, n.º 4 (2012): 377–88. http://dx.doi.org/10.47894/mpal.58.4.05.

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This study represents a contribution to the biostratigraphic characterization of the Gulf of Gabes Triassic series. Diverse andwell preserved palynological assemblages from the Djerba Melita 1 (DJM1)well in the Djerba Island (Gulf ofGabes, Southern Tunisia) are here presented and discussed. A Carnian microflora is recorded in the Triassic portion of the drilled succession. The co-occurrence of Ladinian-lower Carnian taxa in association with typical Carnian elements allows to refer the microflora to the lower part of the Duplicisporites continuus palynological assemblage (late Julian, Austrotrachyceras austriacus Subzone). A semi-quantitative analysis of the assemblages also seems to document the occurrence, in the middle-upper part (units 3 and 4) of DJM1 well of the Aulisporites-Aratrisporites Acme Zone, an ammonoid-calibrated palynological event occurring in several European successions, referring to the late Julian/early Tuvalian. The occurrence of this acme zone in Southern Tunisia encourages its application also to Triassic sedimentary records belonging to the southern Tethyan margin.

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35

Tripathi, Archana. "Palynostratigraphy and palynofacies analysis of subsurface Permian sediments in Talcher Coalfield, Orissa". Journal of Palaeosciences 46, n.º 3 (31 de diciembre de 1997): 79–88. http://dx.doi.org/10.54991/jop.1997.1351.

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Palynological analysis of subsurface sediments in bore-hole TCC-19 near Chhendipada, Talcher Coalfield, Orissa reveals the presence of a Permian palynoflora both below and above the key marker horizon-a conglomeratic pebble bed. The presence of acritarchs in the assemblage suggests brackish water conditions; the palynofacies analysis indicates low energy lacustrine conditions during the deposition of these sediments.

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36

Zhou, Zihan, Dangpeng Xi, Lixin Sun, Jing Zhao, Wanshu Yang, Yunqi Ye, Xinyu Meng y Xiaoqiao Wan. "Late Cretaceous (Santonian to Campanian) Palynological Records and Paleoclimatic Significance from Borehole ZKY2-1, Songliao Basin". Minerals 13, n.º 3 (27 de febrero de 2023): 338. http://dx.doi.org/10.3390/min13030338.

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The global temperature gradually decreased from the Cretaceous Santonian to Campanian, while angiosperms evolved rapidly and gradually became dominant. The Songliao Basin, NE China, contains abundant fossil palynomorphs from the Santonian to Campanian age. A thorough investigation of fossil palynomorphs in borehole ZKY2-1 of the SW Songliao Basin was performed, reconstructing the vegetation and paleoclimate transition from the Santonian–earliest Campanian (lower Nenjiang Formation) to the late Campanian (Sifangtai Formation). Eighty form-genera from borehole ZKY2-1 have been identified. Three palynomorph assemblages were identified: the Schizaeoisporites–Cyathidites–Inaperturopollenites assemblage, Schizaeoisporites–Classopollis–Retitricolporites assemblage, and Schizaeoisporites–Aquilapollenites–Tricolporopollenits assemblage, from bottom to top. Based on palynological analysis from ZKY2-1 and other boreholes in the Songliao Basin, angiosperm pollen proportion in the Sifangtai Formation is significantly higher than in the lower Nenjiang Formation, indicating rapid angiosperm spread from late Santonian to Campanian. Palynological records indicate relatively humid climate during this period; the content of cool palynological types increased from the lower Nenjiang Formation to the Sifangtai Formation, suggesting a transition from warm to cool climate during the late Santonian–earliest Campanian to the late Campanian. The new palynological evidence from the Songliao Basin reveals a global cooling on land and sea during the late Santonian–Campanian period. This climate change may further promote angiosperm spread during the Late Cretaceous period.

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37

Giudice, Gabriela E., Marta A. Morbelli y María R. Piñeiro. "Palynological analysis of Doryopteris species (Pteridaceae/Pteridophyta) from North-West Argentina". Grana 39, n.º 6 (1 de noviembre de 2000): 279–87. http://dx.doi.org/10.1080/00173130052504315.

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38

Farley, Martin B. "Vegetation distribution across the early Eocene depositional landscape from palynological analysis". Palaeogeography, Palaeoclimatology, Palaeoecology 79, n.º 1-2 (julio de 1990): 11–27. http://dx.doi.org/10.1016/0031-0182(90)90103-e.

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39

Bhattacharyya, Amalava, Nivedita Mehrotra y Santosh K. Shah. "Holocene vegetation and climate of south Tripura based on palynological analysis". Journal of the Geological Society of India 77, n.º 6 (junio de 2011): 521–26. http://dx.doi.org/10.1007/s12594-011-0056-x.

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40

GUO, DianYong, YiFeng YAO y ChengSen LI. "Palynological analysis, paleovegetation and paleoclimate at Jininglu Archaeological Site, Inner Mongolia". Chinese Science Bulletin 58, S1 (1 de enero de 2013): 90–96. http://dx.doi.org/10.1360/tb-2013-suppl018.

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41

ANTONIOLI, L., R. DINO, H. A. PORTELA y P. F. AMARAL. "New Method of Rock Samples Preparation for Palynological and Palynofaciological Analysis". Anuário do Instituto de Geociências - UFRJ 43, n.º 1 (30 de marzo de 2020): 339–45. http://dx.doi.org/10.11137/2020_1_339_345.

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42

Nenasheva, G. I., M. S. Ivanova, N. S. Malygina y T. M. Kopytina. "Палинологическая характеристика медов Алтайского края". Ukrainian Journal of Ecology 7, n.º 4 (21 de noviembre de 2017): 56–64. http://dx.doi.org/10.15421/2017_87.

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<p>The present paper contains results of the palynological research in Altai Territory which takes first place in the Siberian Region and fourth place in Russia in honey production. The development of criteria of the palynological authenticity of Altai honey is of great practical importance, since beekeeping is one of the priority directions of the of the region's economy development. We studied the honey resources of the mountain forest (Charysh, Soloneshnoe and Altaiskoe Districts), foothills-forest steppe (Smolenskoe District) and pinery (Pervomaiskoe District) zones of Altai Territory. The palynological analysis of 103 honey examples from 18 apiaries was carried out. The melisopalinological analysis of honey examples revealed that the pollen composition of honey reflects the type of vegetation in a locality where the honey was produced. We studied both polyflorous and monoflorous honey. In samples studied the pollen of 25 plant families was identified, herewith the families Apiaceae, Asteraceae, Brassicaceae, Fabaceae, Lamiaceae, Polygonaceae, Rosaceae dominate. To visualize the data the ternary plots were constructed. The plots demonstrate a composition of plants families in honey samples from forest-steppe, subtaiga, foothills forest-steppe and mountain forest zones. The analysis of the plot illustrating a composition of plant families in the forest-steppe and the foothills forest-steppe zones revealed the prevalence of Asteraceae, Brassicaceae, Fabaceae and Polygonaceae, whereas in a composition of plant families in the forest-steppe subtaiga and mountain forest zones Apiaceae, Brassicaceae, Fabaceae and Polygonaceae prevail. The analysis of the plot illustrating a composition of plant families in the the foothills forest-steppe and the mountain forest zones revealed the prevalence of Apiaceae, Brassicaceae, Fabaceae and Polygonaceae. For the analysis of the melisopalinological data an agglomeration hierarchical clustering was used. The central objects determining the formation of classes were identified, their contribution to the formation of honey samples pollen spectra was calculated. For honey from forest-steppe subtaiga, foothills forest-steppe and mountain forest zones originated from five districts of Altai Territory the minimum thresholds which determine their palynological authenticity were given.</p>

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43

Zini, Lucía Melisa, Constanza Soledad Carrera, Elsa Clorinda Lattar y María Silvia Ferrucci. "Pollen morphology in selected species of Caricaceae with special reference to novel palynological characters". Botany 96, n.º 1 (enero de 2018): 1–8. http://dx.doi.org/10.1139/cjb-2017-0125.

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The pollen grain morphology of Jacaratia corumbensis Kuntze, J. spinosa (Aubl.) A.DC., Vasconcellea quercifolia A. St.-Hil., and Carica papaya L. from Argentine samples were examined for the first time, using light and scanning electron microscopes. Observations and measurements were performed on acetolyzed pollen grains. Principal-components analysis was performed for quantitative morphological variables. Pollen grains were tri-colporate with lalongate endoaperture, oblate spheroidal to prolate, medium, exine bireticulate or reticulate, with a granulate lumina. A fastigium was present. Novel palynological data in this study for species identification revealed the presence of margo in C. papaya and variations in endoaperture shapes in all the species. The endoaperture ends often were H-shaped or horn-shaped. A biplot showed clear separation of the four taxa based on the palynological traits. Vasconcellea quercifolia was strongly correlated with equatorial diameter, equatorial diameter in polar view, exine thickness, and polar diameter, whereas J. corumbensis and J. spinosa were positively correlated with polar index and polar area index, respectively. The distance between two colpi allowed the discrimination of C. papaya. We confirmed the homogenous nature for most of the qualitative palynological characters in Caricaceae, and demonstrated that pollen morphology in combination with statistical analyses is a reliable tool for delimiting taxonomic groups.

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44

A.O., Ola-Buraimo, Oladimeji R.G. y Faruk A.K. "Palynology, Paleoenvironment and Stratigraphy Relationship of Tungan Buzu Hill with Adjacent Valley Gwandu Formation, Sokoto Basin, Northwestern Nigeria". African Journal of Environment and Natural Science Research 5, n.º 2 (3 de octubre de 2022): 15–26. http://dx.doi.org/10.52589/ajensr-snp4ujwp.

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Palynological study of Tungu Buzum Hill was investigated with a view towards determining the age of the outcrop, compare its miospore content with the adjacent Tungu Buzu Valley of carbonaceous shale, their stratigraphic relationship and paleoenvironment of deposition of the litho-sequence. Field study involved litho-description and logging achieved by noting the rock type, mineralogical composition, bed thickness, texture, sorting, roundness, structure, fossil content and diagenetic effect. Palynological slide preparation involved decarbonisation, digestion, sieving, maceral separation using zinc bromide, mounting on slide and petrographic analysis. The litho-sequence is composed sequentially upward of claystone, siltstone, indurated silty claystone, mudstone and ferruginized ironstone characterized by loadcast, fracture, lithification and bioturbation. Palynologically, the litho-section exhibits few marker forms such as Belskipollis elegans, Peregrinipollis nigericus and Retibrevitricolporites obodoensis depictive of early Miocene age. The paleoenvironment was deduced based on the occurrence of peridinacean forms such as Andalusiella sp., Senegalinium sp., Lejeuncysta diversiforma and Paleocystodinium golzowense indicative of marginal marine, while deeper marginal marine forms of gonyaulacacean phytoplanktons present are Micrhystridium sp., Canningia capillata and Dinogymnium sp. There are similarities in palynomorph assemblages of this study and Tunga Buzu Valley section in terms of age and similarity to Gwandu Formation though varied in paleoenvironment in the valley litho-section, marked by continental to marginal marine settings. Field relationship suggests that the Tunga Buzu Hill is stratigraphically overlying the Tunga Buzu Valley, separated by a fault. The Tunga Buzu Hill section represents the footwall while the Tunga Buzu Valley is situated within the hanging wall of a normal fault structure.

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Culiberg, Metka y Stevo Dozet. "Palynologic and Lithostratigraphic Research of Lacustrine, Marsh and Fluvial Quaternary Deposits in Rašica Dolina and Mišja Dolina, and on Radensko Polje". Hacquetia 6, n.º 1 (1 de julio de 2007): 91–101. http://dx.doi.org/10.2478/v10028-007-0004-x.

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Palynologic and Lithostratigraphic Research of Lacustrine, Marsh and Fluvial Quaternary Deposits in Rašica Dolina and Mišja Dolina, and on Radensko Polje The article deals with the results of palynological and stratigraphical research of lacustrine, marsh and fluvial Quaternary deposits in the Rašica dolina and Mišja dolina, and on Radensko polje. Correlation with equivalent Quaternary deposits and their palynoflora from the Grosuplje polje area was also performed. In the study area, Mesozoic, predominantly carbonate rocks are transgressively covered by Quaternary deposits which are in general composed of five lithostratigraphic units (from bottom to top): 1. gravel, 2. grey lacustrine clay, 3. reddish brown loam, 4. light grey marly clay and 5. alluvial marsh deposits. On the basis of pollen analysis the Quaternary sediments of the study area are chronostratigraphically classified to the Late or Middle Pleistocene and Holocene.

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Sousa, Saulo M., Aryane C. Reis, Shaiany S. L. Gomes, Karina B. Bernardo, Fátima R. G. Salimena y Lyderson F. Viccini. "Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach". Anais da Academia Brasileira de Ciências 82, n.º 4 (diciembre de 2010): 868–79. http://dx.doi.org/10.1590/s0001-37652010000400009.

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The genus Heteropterys is one of the major genera in Malpighiaceae. However, few cytological and palynological studies were reported. The present work described for the first time the chromosome number, heterochromatin pattern, meiotic behavior, pollen viability and palynological aspects of Heteropterys ubellata, a very spread species. One large Brazilian population was evaluated using conventional techniques for meiotic studies and acetolyse to access the pollen morphology. The species showed 2n = 20 chromosomes, normal meiotic development and viable pollens. Great blocks of heterochromatin were observed around the centromers. DAPI staining was positive for centroeric heterochroatin, hile CMA3 ark as observed just at terinal regions of one pair of hoologues chromosomes. This result and the presence of one chromosome pair attached to the nucleoli during the pachytene and diakinesis suggested the presence of only one pair of NORs. Palynological analysis revealed that pollen grains are apolar, 6 porate and with colpoids associated to all pores. The pollen content was positive for the starch test, and the exine was rugulate with little psilate regions.

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47

Wirrmann, Denis, Anne-Marie Sémah y Magali Chacornac-Rault. "Late Holocene paleoenvironment in northern New Caledonia, southwestern Pacific, from a multiproxy analysis of lake sediments". Quaternary Research 66, n.º 2 (septiembre de 2006): 213–32. http://dx.doi.org/10.1016/j.yqres.2006.04.002.

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AbstractLithostratigraphic and palynological analysis of two cores recovered from the ‘Grand Lac’ (New Caledonia), combined with 35 14C AMS dates, yields a paleoenvironmental record spanning the last 2000 yr. The lithology is represented mainly by clayey or laminated layers. A catastrophic event, which is marked by very coarse deposits, occurred probably between ca 1070–960 cal yr B.P. and possibly is associated with an unusually severe La Niña event. Before and after this event, a similar combination of the two main sediment types is recorded. The repeated alternation of laminated and clayey layers is interpreted as the response to local hydrologic forcing, which may reflect a shift from relatively wet to relatively drier conditions, respectively. Variable amount of micro-charcoal is detected all along the profile. Without additional evidence, notwithstanding the initial local human settlement documented since ca 2900 14C yr B.P., micro-charcoal occurrence and variability cannot be linked directly to an anthropogenic origin. No distinct palynological zonations in relation to the lithology are observed, and the vegetation changes may only represent minor transitions across environmental limits.

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48

Alahmed, Dr Ahmed Asker Najaf y Amer S. Al-Gibouri. "Geochemical and Palynological Analysis in Assessing Hydrocarbon Potential and Palaeoenvironmental Deposition, North Iraq". Journal of Petroleum Research and Studies 2, n.º 1 (5 de mayo de 2021): 97–116. http://dx.doi.org/10.52716/jprs.v2i1.37.

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Geochemical and Palynological analysis were carried out to assess hydrocarbon potential and palaeoenvironmental deposition for (27) core and cutting rock samples recovered from selected oil exploratory wells , Makhul-2 (Mk-2),Qarachuq-1 (Qc-1) and Qarachuq-2(Qc-2), TaqTaq-1(Taq-1), Butmah-15 (Bm-15), Ajeel-8 (Aj-8)and Jabal kand( Jk -1) ,encountered from Butmah Formation ( Lower-Middle Liassic) , Sargelu Formation (Middle Jurassic ) and Naokelekan Formation (upper Jurassic ) .The value of palynological analyses in the undertaken study is to resolve stratigraphic and palaeoenvironmental consequences of Jurassic Period in Iraq , thus the profuse of plant cuticle of translucent phytoclast in the basin of deposition refers to proximal deposi tional environment due to their specific gravity of this type of plant cuticle , whereas the opaque organic matter produced either from highly oxidized environment or from forest fire residues could refer due to its light specific gravity to distal depositional environment that this type could transported far from the continents toward the aquatic environment . Recurring Type A Amorphous kerogen indicates Oil –Prone beside various amorphous types (B, C, D) within Zagros Fold Belt. The specified palynomorphs recovered from palynological analysis declared so many indications to determine the potentiality of source rocks .Almost all slides shows spores and pollen, phytoclasts and amorphous organic matter. Extracted resins and pigments are indicating toxic environment of type II-III kerogen that generates oil with subordinate gas.Geochemical analysis can aid also the undertaken study by determination the Terrestrial origin and kerogen type II-III .Previously proved that all crude oils within this sub- basin is belong to family A (sourced from Middle Jurassic Sargelu Formation) nearby local basins of family B (sourced from U. Triassic Kurra chine, and Rhaetic Baluti Shale Formation). Jurassic Period is considered as a generative hydrocarbon rock unit by means of both optical and chemical approaches definitely in the Great Kirkuk region and surrounding areas in North Iraq. Meanwhile the current studies focused on the western desert as promising reservoirs related with hydrocarbon pathways from Mesopotamian Basin.

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49

Karpińska-Kołaczek, Monika, Piotr Kołaczek, Waldemar Heise y Grzegorz Worobiec. "Tetraploa aristata Berkeley & Broome (Fungi, Pleosporales), a new taxon to Poland". Acta Societatis Botanicorum Poloniae 79, n.º 3 (2011): 239–44. http://dx.doi.org/10.5586/asbp.2010.030.

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<em>Tetraploa aristata</em> Berkeley & Broome represents the anamorphic stage of a pleomorphic fungus with holomorph <em>Tetraplosphaeria tetraploa</em> (Scheuer) Kaz. Tanaka & K. Hiray (<em>Lophiostoma tetraploa</em> (Scheuer) Aptroot & K.D. Hyde). Until now this taxon has not been reported in Poland, where it is probably on the fringe of its distribution. Conidia of <em>Tetraploa aristata</em> were found during palynological analyses of modern surface samples and later on the decaying leaves of <em>Phleum phleoides</em> from xeric grasslands in Kraków and its vicinity. Since <em>Tetraploa aristata</em> was discovered during palynological analysis, this method might be considered to be a useful tool for investigations of contemporary microfungal mycobiota.

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SILVA, WAGNER G., GEISE S. A. ZERFASS, PAULO A. SOUZA y JAVIER HELENES. "Biochronostratigraphy and paleoenvironment analysis of Neogene deposits from the Pelotas Basin (well 2-TG-96-RS), Southernmost Brazil". Anais da Academia Brasileira de Ciências 87, n.º 3 (25 de agosto de 2015): 1565–82. http://dx.doi.org/10.1590/0001-3765201520140584.

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This paper presents the integration of micropaleontological (palynology and foraminifera) and isotopic (87Sr/86Sr) analysis of a selected interval from the well 2-TG-96-RS, drilled on the onshore portion of the Pelotas Basin, Rio Grande do Sul, Brazil. A total of eight samples of the section between 140.20 and 73.50 m in depth was selected for palynological analysis, revealing diversified and abundant palynomorph associations. Species of spores, pollen grains and dinoflagellate cysts are the most common palynomorphs found. Planktic and benthic calcareous foraminifera were recovered from the lowest two levels of the section (140.20 and 134.30 m). Based on the stratigraphic range of the species of dinoflagellate cysts and sporomorphs, a span age from Late Miocene to Early Pliocene is assigned. The relative age obtained from the 87Sr/86Sr ratio in shells of calcareous foraminifers indicates a Late Miocene (Messinian) correspondence, corroborating the biostratigraphic positioning performed with palynomorphs. Paleoenvironmental interpretations based on the quantitative distribution of organic components (palynomorphs, phytoclasts and amorphous organic matter) throughout the section and on foraminiferal associations indicate a shallow marine depositional environment for the section. Two palynologicals intervals were recognized based on palynofacies analysis, related to middle to outer shelf (140.20 to 128.90 m) and inner shelf (115.75 to 73.50 m) conditions.

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