Paleobotânica E Palinologia Dos Depósitos Eopermianos
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Cambrian Phytoplankton of the Brunovistulicum – Taxonomy and Biostratigraphy
MONIKA JACHOWICZ-ZDANOWSKA Cambrian phytoplankton of the Brunovistulicum – taxonomy and biostratigraphy Polish Geological Institute Special Papers,28 WARSZAWA 2013 CONTENTS Introduction...........................................................6 Geological setting and lithostratigraphy.............................................8 Summary of Cambrian chronostratigraphy and acritarch biostratigraphy ...........................13 Review of previous palynological studies ...........................................17 Applied techniques and material studied............................................18 Biostratigraphy ........................................................23 BAMA I – Pulvinosphaeridium antiquum–Pseudotasmanites Assemblage Zone ....................25 BAMA II – Asteridium tornatum–Comasphaeridium velvetum Assemblage Zone ...................27 BAMA III – Ichnosphaera flexuosa–Comasphaeridium molliculum Assemblage Zone – Acme Zone .........30 BAMA IV – Skiagia–Eklundia campanula Assemblage Zone ..............................39 BAMA V – Skiagia–Eklundia varia Assemblage Zone .................................39 BAMA VI – Volkovia dentifera–Liepaina plana Assemblage Zone (Moczyd³owska, 1991) ..............40 BAMA VII – Ammonidium bellulum–Ammonidium notatum Assemblage Zone ....................40 BAMA VIII – Turrisphaeridium semireticulatum Assemblage Zone – Acme Zone...................41 BAMA IX – Adara alea–Multiplicisphaeridium llynense Assemblage Zone – Acme Zone...............42 Regional significance of the biostratigraphic -
Back Matter (PDF)
PROCEEDINGS OF THE YORKSHIRE GEOLOGICAL SOCIETY 309 INDEX TO VOLUME 55 General index unusual crinoid-coral association 301^ Lake District Boreholes Craven inliers, Yorkshire 241-61 Caradoc volcanoes 73-105 Chronostratigraphy Cretoxyrhinidae 111, 117 stratigraphical revision, Windermere Lithostratigraphy crinoid stems, N Devon 161-73 Supergroup 263-85 Localities crinoid-coral association 301-4 Lake District Batholith 16,73,99 Minerals crinoids, Derbiocrinus diversus Wright 205-7 Lake District Boundary Fault 16,100 New Taxa Cristatisporitis matthewsii 140-42 Lancashire Crummock Fault 15 faunal bands in Lower Coal Measures 26, Curvirimula spp. 28-9 GENERAL 27 Dale Barn Syncline 250 unusual crinoid-coral association 3Q1-A Acanthotriletes sp. 140 Dent Fault 257,263,268,279 Legburthwaite graben 91-2 acritarchs 243,305-6 Derbiocrinus diversus Wright 205-7 Leiosphaeridia spp. 157 algae Derbyshire, limestones 62 limestones late Triassic, near York 305-6 Diplichnites 102 foraminifera, algae and corals 287-300 in limestones 43-65,287-300 Diplopodichnus 102 micropalaeontology 43-65 origins of non-haptotypic palynomorphs Dumfries Basin 1,4,15,17 unusual crinoid-coral association 301-4 145,149,155-7 Dumfries Fault 16,17 Lingula 22,24 Alston Block 43-65 Dunbar-Oldhamstock Basin 131,133,139, magmatism, Lake District 73-105 Amphoracrinus gilbertsoni (Phillips 1836) 145,149 Manchester Museum, supplement to 301^1 dykes, Lake District 99 catalogue of fossils in Geology Dept. Anacoracidae 111-12 East Irish Sea Basin 1,4-7,8,10,12,13,14,15, 173-82 apatite -
Palaeobiology of the Early Ediacaran Shuurgat Formation, Zavkhan Terrane, South-Western Mongolia
Journal of Systematic Palaeontology ISSN: 1477-2019 (Print) 1478-0941 (Online) Journal homepage: http://www.tandfonline.com/loi/tjsp20 Palaeobiology of the early Ediacaran Shuurgat Formation, Zavkhan Terrane, south-western Mongolia Ross P. Anderson, Sean McMahon, Uyanga Bold, Francis A. Macdonald & Derek E. G. Briggs To cite this article: Ross P. Anderson, Sean McMahon, Uyanga Bold, Francis A. Macdonald & Derek E. G. Briggs (2016): Palaeobiology of the early Ediacaran Shuurgat Formation, Zavkhan Terrane, south-western Mongolia, Journal of Systematic Palaeontology, DOI: 10.1080/14772019.2016.1259272 To link to this article: http://dx.doi.org/10.1080/14772019.2016.1259272 Published online: 20 Dec 2016. Submit your article to this journal Article views: 48 View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=tjsp20 Download by: [Harvard Library] Date: 31 January 2017, At: 11:48 Journal of Systematic Palaeontology, 2016 http://dx.doi.org/10.1080/14772019.2016.1259272 Palaeobiology of the early Ediacaran Shuurgat Formation, Zavkhan Terrane, south-western Mongolia Ross P. Anderson a*,SeanMcMahona,UyangaBoldb, Francis A. Macdonaldc and Derek E. G. Briggsa,d aDepartment of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, Connecticut, 06511, USA; bDepartment of Earth Science and Astronomy, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan; cDepartment of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, Massachusetts, 02138, USA; dPeabody Museum of Natural History, Yale University, 170 Whitney Avenue, New Haven, Connecticut, 06511, USA (Received 4 June 2016; accepted 27 September 2016) Early diagenetic chert nodules and small phosphatic clasts in carbonates from the early Ediacaran Shuurgat Formation on the Zavkhan Terrane of south-western Mongolia preserve diverse microfossil communities. -
A High Resolution Palynozonation for the Pennsylvanian to Lower Permian
A high resolution palynozonation for the Pennsylvanian to Lower Permian Al Khlata Formation, south Oman Randall A. Penney, Consultant Palynologist, XGL/31, Petroleum Development Oman LLC, P.O. Box 100, Muscat Post Code 113, Sultanate of Oman. Email: [email protected] Michael H. Stephenson, British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK. Email: [email protected]. Issam Al Barram, XGL/3X, Petroleum Development Oman LLC, P.O. Box 100, Muscat Post Code 113, Sultanate of Oman. Email: [email protected] Key words: Al Khlata Formation, Pennsylvanian, Lower Permian, Palynology, High Resolution Biozonation, Gondwana Correlation. ABSTRACT Palynology is the main method of correlating the subsurface glaciogenic Al Khlata Formation of Oman, due to extreme lateral variability of facies, and poor seismic resolution. The chief 1 operating company in Oman, Petroleum Development Oman, has developed a robust in-house palynozonation through almost 40 years of exploration and production based on thousands of samples and hundreds of well sections. In this paper the formal definitions of the biozones are published, and the biozones are correlated in detail with faunally-calibrated palynological biozones in Western Australia, thereby allowing correlation with the standard Russian stages. Seven biozones are distinguished. The oldest, biozones 2159A and B, of probable late Pennsylvanian age, are characterised by low diversity assemblages of Punctatisporites and monosaccate pollen, with Biozone 2159A having a lower proportion of monosaccate pollen than Biozone 2159B. Biozone 2165A, of probable Asselian age, is characterised by common cingulicamerate spores and Microbaculispora Group; while Biozone 2165B contains in addition to the above, common Horriditriletes Group, and is likely to be Asselian-Sakmarian in age. -
Ludvigson Et Al-Current Research.Indd
New Insights on the Sequence Stratigraphic Architecture of the Dakota Formation, Ludvigson et al. i New Insights on the Sequence Stratigraphic Architecture of the Dakota Formation in Kansas–Nebraska–Iowa from a Decade of Sponsored Research Activity Greg A. Ludvigson, Kansas Geological Survey, The University of Kansas, Lawrence, KS Brian J. Witzke, Iowa Geological Survey, Iowa Department of Natural Resources, Iowa City, IA R. M. Joeckel, Nebraska Conservation and Survey Division, School of Natural Resources, The University of Nebraska-Lincoln, Lincoln, NE Robert L. Ravn, The IRF Group, Anchorage, AK Preston Lee Phillips, Department of Geology and Geography, University of North Carolina at Pembroke, Pembroke, NC Luis A. González, Department of Geology, The University of Kansas, Lawrence, KS Robert L. Brenner, Department of Geoscience, The University of Iowa, Iowa City, IA Abstract The Cretaceous Dakota Formation in the areas of Kansas, Nebraska, and Iowa contains a rich and well-preserved microfl ora of fossil palynomorphs. A comprehensive listing of these taxa is presented in this publication as part of a continuing effort to develop a refi ned biostratigraphic scheme for mid-Cretaceous terrestrial deposits in North America. The Dakota Formation in this region contains four distinctive Albian–Cenomanian palynostratigraphic zones that are used to partition the unit into successive depositional cycles, and each zone records deposition in fl uvial-estuarine environments. The late Albian Kiowa–Skull Creek depositional cycle at the base of the Dakota Formation is recognized throughout the study area, and is also recognized in other parts of the Cretaceous North American Western Interior basin. The overlying newly recognized latest Albian “Muddy–Mowry Cycle” is formally defi ned for the fi rst time in this paper and correlates with depositional cycles recognized by other workers in other parts of the Western Interior basin. -
Carboniferous Outcrops at La Herradura Creek, San Juan Province (Western Argentina), Revisited: Age of the Transgressions
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by CONICET Digital Andean Geology 41 (1): 83-105. January, 2014 Andean Geology doi: 10.5027/andgeoV41n1-a0410.5027/andgeoV40n2-a?? formerly Revista Geológica de Chile www.andeangeology.cl Carboniferous outcrops at La Herradura Creek, San Juan Province (Western Argentina), revisited: age of the transgressions Valeria S. Pérez Loinaze1, Carlos O. Limarino2, Silvia N. Césari1 1 Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’, Avda. Ángel Gallardo 470, C1405DJR Buenos Aires, Argentina. [email protected]; [email protected] 2 Departamento de Geología-Instituto de Geociencias Básicas, Ambientales y Aplicadas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA Buenos Aires, Argentina. [email protected] ABSTRACT. At the outcrops of the Tupe Formation in the La Herradura Creek, San Juan Province, two transgressive events are recorded, which range from few meters to tens of meters in thickness. These strata correspond to the stratotype of the faunal Tivertonia jachalensis-Streptorhynchus inaequiornatus Biozone. An evaluation of the timing of the two marine transgressions is made on the basis of palynological assemblages and available radiometric ages. A short-lived transgression is recorded in the latest Bashkirian-early Moscovian, and then a substantial sea level fall took place forming an irregular incision surface. Later, a major high eustatic sea-level occurred during the middle Moscovian resulting in a more important marine ingression. The palynological assemblages associated to the older transgressive event indicate the presence of the Raistrickia densa-Convolutispora muriornata (DM) Biozone (Subzone B). -
Palynology of the Middle Ordovician Hawaz Formation in the Murzuq Basin, South-West Libya
This is a repository copy of Palynology of the Middle Ordovician Hawaz Formation in the Murzuq Basin, south-west Libya. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/125997/ Version: Accepted Version Article: Abuhmida, F.H. and Wellman, C.H. (2017) Palynology of the Middle Ordovician Hawaz Formation in the Murzuq Basin, south-west Libya. Palynology, 41. pp. 31-56. ISSN 0191-6122 https://doi.org/10.1080/01916122.2017.1356393 Reuse Items deposited in White Rose Research Online are protected by copyright, with all rights reserved unless indicated otherwise. They may be downloaded and/or printed for private study, or other acts as permitted by national copyright laws. The publisher or other rights holders may allow further reproduction and re-use of the full text version. This is indicated by the licence information on the White Rose Research Online record for the item. Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request. [email protected] https://eprints.whiterose.ac.uk/ Palynology of the Middle Ordovician Hawaz Formation in the Murzuq Basin, southwest Libya Faisal H. Abuhmidaa*, Charles H. Wellmanb aLibyan Petroleum Institute, Tripoli, Libya P.O. Box 6431, bUniversity of Sheffield, Department of Animal and Plant Sciences, Alfred Denny Building, Western Bank, Sheffield, S10 2TN, UK Twenty nine core and seven cuttings samples were collected from two boreholes penetrating the Middle Ordovician Hawaz Formation in the Murzuq Basin, southwest Libya. -
Permian–Triassic Non-Marine Algae of Gondwana—Distributions
Earth-Science Reviews 212 (2021) 103382 Contents lists available at ScienceDirect Earth-Science Reviews journal homepage: www.elsevier.com/locate/earscirev Review Article Permian–Triassic non-marine algae of Gondwana—Distributions, natural T affinities and ecological implications ⁎ Chris Maysa,b, , Vivi Vajdaa, Stephen McLoughlina a Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden b Monash University, School of Earth, Atmosphere and Environment, 9 Rainforest Walk, Clayton, VIC 3800, Australia ARTICLE INFO ABSTRACT Keywords: The abundance, diversity and extinction of non-marine algae are controlled by changes in the physical and Permian–Triassic chemical environment and community structure of continental ecosystems. We review a range of non-marine algae algae commonly found within the Permian and Triassic strata of Gondwana and highlight and discuss the non- mass extinctions marine algal abundance anomalies recorded in the immediate aftermath of the end-Permian extinction interval Gondwana (EPE; 252 Ma). We further review and contrast the marine and continental algal records of the global biotic freshwater ecology crises within the Permian–Triassic interval. Specifically, we provide a case study of 17 species (in 13 genera) palaeobiogeography from the succession spanning the EPE in the Sydney Basin, eastern Australia. The affinities and ecological im- plications of these fossil-genera are summarised, and their global Permian–Triassic palaeogeographic and stra- tigraphic distributions are collated. Most of these fossil taxa have close extant algal relatives that are most common in freshwater, brackish or terrestrial conditions, and all have recognizable affinities to groups known to produce chemically stable biopolymers that favour their preservation over long geological intervals. -
Peat-Forming Environment of Permian Coal Seams from the Faxinal Coalfield (Paraná Basin) in Southern Brazil, Based on Palynology and Palaeobotany
Rev. bras. paleontol. 10(2):117-127, Maio/Agosto 2007 © 2007 by the Sociedade Brasileira de Paleontologia PEAT-FORMING ENVIRONMENT OF PERMIAN COAL SEAMS FROM THE FAXINAL COALFIELD (PARANÁ BASIN) IN SOUTHERN BRAZIL, BASED ON PALYNOLOGY AND PALAEOBOTANY MIRIAM CAZZULO-KLEPZIG, MARGOT GUERRA-SOMMER, RUALDO MENEGAT Instituto de Geociências, UFRGS, Av. Bento Gonçalves, 9500, 91501-970, Porto Alegre, RS, Brazil. [email protected], [email protected], [email protected] MARGARETE WAGNER SIMAS Programa de Pós Graduação em Geociências, UFRGS, Av.Bento Gonçalves, 9500, 91501-970, Porto Alegre, RS, Brazil. [email protected] JOÃO GRACIANO MENDONÇA FILHO Instituto de Geociências, UFRJ, Prédio de Ciências e Matemática, Bloco F, Ilha do Fundão, 21941-590, RJ, Brazil. [email protected] ABSTRACT – Coal seams from the Faxinal coalfield (Rio Bonito Formation, Lower Permian of Paraná Basin) are compositionally distinct from other South Brazilian coal palynofloras. The dominance of bisaccate and striate pollen grains such as Alisporites, Scheuringipollenites, Limitisporites, Vesicaspora and Protohaploxypinus in the palynofloras reflect a peat-forming plant community composed namely of glossopterids, cordaites and conifers. Subordinate trilete spores derived from lycopsids, sphenopsids and filicopsids (e.g. Lundbladispora, Punctatisporites, Granulatisporites, Leiotriletes, Deltoidospora, Calamospora) are less abundant, occurring in variable proportions. Algae-like elements, commonly found in south Brazilian coal palynofloras (Portalites, Tetraporina, -
Cretaceous Strata of Western Alabama
Studies of Pre-Selma Cretaceous Core Samples From the Outcrop Area in Western Alabama GEOLOGICAL SURVEY BULLETIN 1160 A group of papers by W: H. Monroe, R. E. Bergenback, N. F. Soh/, E. R. Applin, E. B. Leopold, H. M. Pakiser, and L. C. Conant UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1964 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 PREFACE In 1954 four core holes were drilled in the pre-Selma Cretaceous strata of the Alabama Coastal Plain in order to get unweathered samples within a few miles of the outcrops. During the next few years several specialists studied the cores, and their reports are published as consecutive parts of this bulletin. Watson H. Monroe, who spent many years studying the Coastal Plain strata in Alabama and Mississippi, conceived and supervised the drilling and planned the later studies. His earlier published re port (W. H. Monroe, 1955, Cores of pre-Selma Cretaceous rocks in the outcrop area in western Alabama: Gulf Coast Geol. Societies Trans., v. 5, p. 11-37) contains a brief description of the stratigraphy, together with logs and other information regarding the core holes, and he has provided the introductory chapter to this bulletin. Rich ard E. Bergenback studied the petrology of the cores, which included finding the distribution of grain sizes, determining the mineralogy of the grains and the matrix of the sediments, and having X-Ray iden tifications made of the clay minerals. -
The Biodiversity of Organic-Walled Eukaryotic Microfossils from the Tonian Visingsö Group, Sweden
Examensarbete vid Institutionen för geovetenskaper Degree Project at the Department of Earth Sciences ISSN 1650-6553 Nr 366 The Biodiversity of Organic-Walled Eukaryotic Microfossils from the Tonian Visingsö Group, Sweden Biodiversiteten av eukaryotiska mikrofossil med organiska cellväggar från Visingsö- gruppen (tonian), Sverige Corentin Loron INSTITUTIONEN FÖR GEOVETENSKAPER DEPARTMENT OF EARTH SCIENCES Examensarbete vid Institutionen för geovetenskaper Degree Project at the Department of Earth Sciences ISSN 1650-6553 Nr 366 The Biodiversity of Organic-Walled Eukaryotic Microfossils from the Tonian Visingsö Group, Sweden Biodiversiteten av eukaryotiska mikrofossil med organiska cellväggar från Visingsö- gruppen (tonian), Sverige Corentin Loron ISSN 1650-6553 Copyright © Corentin Loron Published at Department of Earth Sciences, Uppsala University (www.geo.uu.se), Uppsala, 2016 Abstract The Biodiversity of Organic-Walled Eukaryotic Microfossils from the Tonian Visingsö Group, Sweden Corentin Loron The diversification of unicellular, auto- and heterotrophic protists and the appearance of multicellular microorganisms is recorded in numerous Tonian age successions worldwide, including the Visingsö Group in southern Sweden. The Tonian Period (1000-720 Ma) was a time of changes in the marine environments with increasing oxygenation and a high input of mineral nutrients from the weathering continental margins to shallow shelves, where marine life thrived. This is well documented by the elevated level of biodiversity seen in global microfossil -
Depositional Cyclicity and Paleoecological Variability in an Outcrop of Rio Bonito Formation, Early Permian, Parana´ Basin, Rio Grande Do Sul, Brazil
Journal of South American Earth Sciences 21 (2006) 276–293 www.elsevier.com/locate/jsames Depositional cyclicity and paleoecological variability in an outcrop of Rio Bonito formation, Early Permian, Parana´ Basin, Rio Grande do Sul, Brazil Andre´ Jasper a,*, Rualdo Menegat b, Margot Guerra-Sommer b, Miriam Cazzulo-Klepzig b, Paulo Alves de Souza b a Setor de Botaˆnica e Paleobotaˆnica, Museu de Cieˆncias Naturais, UNIVATES (SBP/MCN/UNIVATES), Avelino Tallini, 171, CEP 95.900-000 Lajeado, RS, Brazil b Instituto de Geocieˆncias, Universidade Federal do Rio Grande do Sul (IG/UFRGS), Avenida Bento Gonc¸alves, 9.500, CEP 91.540-000 Porto Alegre, RS, Brazil Received 1 December 2004; accepted 1 January 2006 Abstract This article integrates faciological, paleobotanical, and palynological analyses to establish the relationship between depositional cyclicity and paleoecological patterns for the (Early Permian) Quite´ria outcrop, Rio Bonito Formation, southern Parana´ Basin, Rio Grande do Sul state. The basal section of this outcrop represents a coastal lagoon depositional system protected by barriers in microtide conditions, where peat-forming conditions developed in lowlands with ingression of distal alluvial fan deposits. The upper clastic section represents different environmental conditions, originated by the barrier sectioning brought by washover fans. The palynoflora identified in the basal section present a dominance of spores produced by arborescent and herbaceous lycophytes, as well as by sphenophytes and filicophytes, complementary forms of gymnosperm pollen grains. Algae or algae-elements, indicative of fresh, brackish, or marine water, are recorded together with terrestrial spores and pollen grains. The palynological content of matrix-supported conglomerates suggests a close, qualitative similarity with the coaly facies; however, the increase in gymnosperm pollen grains accompanied by a decrease in spores produced by pteridophyte vegetation is remarkable.