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Dissertations / Theses on the topic 'Diagenesis models'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

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1

Thornton, David A. "A potential aeolian oil reservoir : the mid Devonian Tandalgoo formation, Canning Basin ; depositional models and diagenesis /." Title page, contents and abstract only, 1990. http://web4.library.adelaide.edu.au/theses/09SM/09smt513.pdf.

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2

Kalefa, Mohamed. "Diagenesis and Sequence Stratigraphy : Predictive Models for Reservoir Quality Evolution of Fluvial and Glaciogenic and Non-glaciogenic, Paralic Deposits." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6179.

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<p>Development of a predictive model for the distribution of diagenetic alterations and related evolution of reservoir quality of sandstones was achieved by integrating the knowledge of diagenesis to sequence stratigraphy. This approach allows a better elucidation of the distribution of eogenetic alterations within sequence stratigraphy, because changes in the relative sea level induce changes to: (i) pore water chemistry, (ii) residence time of sediments under certain near-surface geochemical conditions, (iii) variations in the detrital composition, and (iv) amounts and type of organic matter

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3

Grigg, Nicola Jane, and nicky grigg@csiro au. "Benthic Bulldozers and Pumps: Laboratory and Modelling Studies of Bioturbation and Bioirrigation." The Australian National University. Centre for Resource and Environmental Studies, 2003. http://thesis.anu.edu.au./public/adt-ANU20060228.104425.

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Aquatic sediments are the recipients of a continual rain of organic debris from the water column. The decomposition reactions within the sediment and the rates of material exchange between the sediment and water column are critically moderated by the transport processes within the sediment. The sediment and solute movement induced by burrowing animals bioturbation and bioirrigation far exceed abiotic transport processes such as sedimentation burial and molecular diffusion. Thalassinidean shrimp are particularly abundant burrowing animals. Living in high density populations along coastlines

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4

Wang, Yuexing, and 王越興. "Sediment nutrient flux for a pulsed organic load: mathematical modeling and experimental verfication." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40987826.

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5

Booler, Jonathan Paul. "Carbonate facies, sequences and associated diagenesis, Upper Cretaceous, Tremp Basin, Spanish Pyrenees." Thesis, Durham University, 1994. http://etheses.dur.ac.uk/5527/.

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This thesis details the results of an integrated study of carbonate platform sedimentology, geometry, evolution and diagenesis within a sequence stratigraphic framework. This study has been based on the Upper Cretaceous carbonates within the Tremp basin of the Spanish Pyrenees, which, through the effects of minor tectonic deformation during the later parts of the Pyrenean orogeny, are exceptionally well exposed and can be studied in the form of a platform to basin cross-section upon a scale that is comparable to that of a seismic section. This study concentrates on the mid-Turonian to Coniacia

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6

Rabouille, Christophe. "La diagenese precoce : modeles dynamiques et quantitatifs." Paris 7, 1990. http://www.theses.fr/1990PA077161.

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La diagenese precoce des sediments marins profonds contribue au recyclage oceanique des debris biogeniques particulaires. Elle est aussi la premiere etape des transformations que cette matiere subit lors de son enfouissement. Cette etape conduit a des transformations biogeochimiques de la composition des particules qui constituent le sediment et fixe un enregistrement historique des conditions oceaniques. Pour y avoir acces, il est donc necessaire de comprendre et de quantifier les processus de diagenese precoce. Dans cette optique, nous avons developpe des modeles globaux quantitatifs de diag

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7

JEANDON, CHRISTOPHE. "Reactions modeles de la diagenese des chlorophylles." Université Louis Pasteur (Strasbourg) (1971-2008), 1992. http://www.theses.fr/1992STR13181.

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Les petroporphyrines sont des pigments presents, sous forme de melanges, dans la plupart des sediments contenant de la matiere organique. Ils sont en general les fossiles de chlorophylles. Leur purification chromatographique et l'identification de leurs structures sont souvent difficiles. L'acylation par reaction de friedel-crafts a ete reconsideree en tant qu'outil servant a faciliter la purification de ces melanges complexes et une nouvelle serie de porphyrines diacetylee a ete synthetisee dans ces conditions. Par ailleurs une nouvelle hemisynthese, de deux porphyrines fossiles, la deoxophyl

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8

ROHRER, ANNICK. "Reactions modeles de la diagenese des porphyrines." Université Louis Pasteur (Strasbourg) (1971-2008), 1995. http://www.theses.fr/1995STR13201.

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Les porphyrines presentes dans la matiere organique sedimentaire (petroporphyrines) sont les fossiles moleculaires de chlorophylles ou d'hemes provenant essentiellement d'algues ou de bacteries. Ces precurseurs biologiques subissent, au cours de leur diagenese, de multiples transformations catalysees par la temperature ou leur environnement chimique (argiles, ions metalliques, soufre et ses derives, etc). Notre travail a consiste a etudier, sur des porphyrines synthetiques, certaines de ces reactions, en particulier les interactions porphyrines-soufre et certains aspects des reactions de metal

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9

Feleke, Arega Woldemariam. "A diagenetic two-layer eutrophication model for Tolo Harbour, Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31241657.

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10

Yang, Xin-She. "Mathematical modelling of compaction and diagenesis in sedimentary basins." Thesis, University of Oxford, 1997. http://ora.ox.ac.uk/objects/uuid:0bdc6c43-4534-4f08-97e2-8a33d6b13e61.

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Sedimentary basins form when water-borne sediments in shallow seas are deposited over periods of millions of years. Sediments compact under their own weight, causing the expulsion of pore water. If this expulsion is sufficiently slow, overpressuring can result, a phenomenon which is of concern in oil drilling operations. The competition between pore water expulsion and burial is complicated by a variety of factors, which include diagenesis (clay dewatering), and different modes (elastic or viscous) of rheological deformation via compaction and pressure solution, which may also include hysteres

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11

Adekola, Solomon Adeniyi. "Integrated approach to solving reservoir problems and evaluations using sequence stratigraphy, geological structures and diagenesis in Orange Basin, South Africa." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6861_1298537140.

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<p>Sandstone and shale samples were selected within the systems tracts for laboratory analyses. The sidewall and core samples were subjected to petrographic thin section analysis, mineralogical analyses which include x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and stable carbon and oxygen isotopes geochemistry to determine the diagenetic alteration at deposition and post deposition in the basin. The shale samples were subjected to Rock-Eval pyrolysis and accelerated solvent extraction (ASE) prior to gas chromatographic (GC) and gas chromat

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12

Vasconcelos, Crisógono de Oliveira Vasconcelos Crisógono de Oliveira Vasconcelos Crisógono de Oliveira Vasconcelos Crisógono de Oliveira. "Modern dolomite precipitation and diagenesis in a coastal mixed water system, (Lagoa Vermelha, Brazil) : a microbial model for dolomite formation under anoxic conditions /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10807.

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13

Pika, Philip. "Exploring the regional and global patterns in organic matter reactivity and its influence on benthic biogeochemical dynamics." Doctoral thesis, Universite Libre de Bruxelles, 2020. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/305204.

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Marine sediments are a key component of the global carbon cycle and climate system. They host one of the largest carbon reservoirs on Earth, provide the only long-term sink for atmospheric CO2, recycle nutrients and represent the most important climate archive. Early diagenetic pro- cesses in marine sediments are thus central to our understanding of past, present and future biogeochemical cycling and climate. Because all early diagenetic processes can be directly or indirectly linked back to the degradation of organic matter (OM), advancing this understand- ing requires disentangling the diffe

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14

Sonibare, Wasiu Adedayo. "Sedimentary modelling and petrophysical characterisation of a Permian Deltaic Sequence (Kookfontein Formation), Tanqua Depocentre, SW Karoo Basin, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/17884.

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Thesis (MSc)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: This study presents an outcrop characterisation and modelling of the excellently exposed Permian Kookfontein Formation of the Ecca Group in the Tanqua-Karoo sub-Basin. The sedimentary modelling (i.e. facies architecture and geometry) and petrophysical characterisation followed a hierarchical and deterministic approach. Quantitative outcrop data were based on the thirteen sedimentary cycles that characterise this stratigraphic succession at the Pienaarsfontein se Berg locality; and these data were analysed using a combinatio

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15

Yemane, Kedamawit Yemane Kedamawit Keddy. "Palaeoenvironmental setting, diagenesis and source rock potential of the lower Beaufort Karoo sequence, at Mt. Chombe-Chiweta, Northern Malawi : a model for late Permian climates and lake development in Central Southern Africa /." Zürich : [s.n.], 1991. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=9237.

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16

Ait, ballagh Fatima Ezzahra. "Dynamique du phosphore dans les sédiments à l’interface fleuve-mer : couplage modèle – données." Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASV020.

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Le phosphore (P) est un nutriment essentiel à la vie, suite à son rôle clé dans la régulation de la production primaire à l'interface fleuve-mer, et au lien étroit de son cycle avec les cycles du carbone et de l'azote. L'enfouissement du phosphore dans les sédiments de l'interface fleuve-mer se fait en association avec la matière organique et des minéraux. Cet enfouissement est la voie d'élimination du P à long terme. Cependant, le rôle des sédiments dans le recyclage du phosphore inorganique dissous (DIP) est mal quantifié dans les estuaires eutrophes. Cette thèse a pour objectif d'affiner la

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17

Caritat, de Peruzzis Patrice de. "Aspects of sediment diagenesis : empirical investigation (Denison Trough, Queensland) and theoretical modelling." Phd thesis, 1990. http://hdl.handle.net/1885/140634.

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18

Thornton, David A. (David Anthony). "A potential aeolian oil reservoir : the mid Devonian Tandalgoo formation, Canning Basin ; depositional models and diagenesis." 1990. http://web4.library.adelaide.edu.au/theses/09SM/09smt513.pdf.

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19

Thornton, David A. "A potential aeolian oil reservoir : the mid Devonian Tandalgoo formation, Canning Basin : depositional models and diagenesis." Thesis, 1990. http://hdl.handle.net/2440/112229.

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Develops a depositional and diagnenetic model for effective oil exploration within the Tandalogoo Formation on the south-east-flank of the Fitzroy Trough.<br>Thesis (M.Sc.) -- University of Adelaide, Dept. of Geology and Geophysics, 1992

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20

Grigg, Nicola Jane. "Benthic Bulldozers and Pumps: Laboratory and Modelling Studies of Bioturbation and Bioirrigation." Phd thesis, 2003. http://hdl.handle.net/1885/47121.

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Aquatic sediments are the recipients of a continual rain of organic debris from the water column. The decomposition reactions within the sediment and the rates of material exchange between the sediment and water column are critically moderated by the transport processes within the sediment. The sediment and solute movement induced by burrowing animals – bioturbation and bioirrigation – far exceed abiotic transport processes such as sedimentation burial and molecular diffusion. Thalassinidean shrimp are particularly abundant burrowing animals. Living in high density populations along coastlines

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21

Harris, Richard Gordon. "Triassic doig formation sand bodies in the Peace River area of western Canada : depositional and structural models, and the impact of diagenesis on reservoir properties." Thesis, 2000. http://hdl.handle.net/2429/10289.

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Middle Triassic Doig reservoirs in the Fireweed, Buick Creek, Cache Creek and West Stoddart fields (94-A-13 to Twp.86, Rge.18) of northeastern British Columbia consist of deltaic and shoreline sands encased in shelf and offshore mudstones and siltstones. The reservoirs comprise a series of northwest and northeast trending elongate sand bodies that lie along a south-southeast depositional trend analogous to the position of the original Doig shoreline. Sediments of the Doig Formation are divisible into two facies associations and ten lithofacies representing deposition in shelf to offshor

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22

Wilson, Robin. "Comparative Assessment of a Two-Layered and Multi-Layered Sediment Model." 2011. http://hdl.handle.net/10222/14386.

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Coastal sediments continuously interact with the overlying water column, collecting and decomposing the incoming rain of organic detritus into inorganic nutrients, and consuming oxygen in the process. This thesis compares the ability of two qualitatively different sediment models, a two-layer and a multi-layer model, to quantify the biogeochemical transformations that occur when detritus is decomposed in the sediment. Using sediment flux observations from a mesocosm eutrophication experiment, selected model parameters and different parameterizations for depositional fluxes of organic matter ha

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23

Witkowska, Magdalena. "Geneza węglanowych konkrecji żelazistych w "iłach rudonośnych" jury środkowej na monoklinie śląsko-krakowskiej." Praca doktorska, 2015. http://ruj.uj.edu.pl/xmlui/handle/item/29130.

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Węglanowe konkrecje żelaziste stanowią charakterystyczną cechę sekwencji skał ilasto-mułowych, należących do formacji częstochowskich iłów rudonośnych, na monoklinie śląsko-krakowskiej. Celem badań konkrecji była charakterystyka mineralogiczno-geochemiczna dla określenia genezy tych skupień mineralnych. Kompleksowa analiza wybranych parametrów geochemicznych (TOC, S/TOC, relacje TOC-Fe-S, Cu+Mo/Zn, Ni/Co, V/Cr, V/V+Ni, U/Th, Uaut) pozwoliła ustalić warunki paleośrodowiska depozycji oraz wczesnej diagenezy goszczących konkrecje skał. Zakres metod badawczych obejmował standardowe analizy mineral

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