An Application of Markov Chain Analysis to the Ayrshire Coal Measures Succession

Doveton, John H.

doi:10.1144/sjg07010011

Cited by 44 publications

(19 citation statements)

References 9 publications

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“…They have been used by a number of investigators (e.g. Potter & Blakey 1968;Gingerinch 1969;Read 1969;Doveton 1971;Miall 1973;Ethier 1975) to validate the presence of ordered and cyclic successions of facies. Stratigraphic "order" may be indicated by repeated patterns of either thickness and/or lithological variation, but it should also be noted that the presence of lithological order alone makes no compelling argument for periodic accumulation (Wilkinson et al 1997).…”

Section: General Approachmentioning

confidence: 99%

Markov Chain analysis of turbiditic facies and flow dynamics (Magura Zone, Outer Western Carpathians, NW Slovakia)

Staňová¹,

Soták²,

Hudec³

2009

Geologica Carpathica

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Methods based on the Markov Chains can be easily applied in the evaluation of order in sedimentary sequences. In this contribution Markov Chain analysis was applied to analysis of turbiditic formation of the Outer Western Carpathians in NW Slovakia, although it also has broader utilization in the interpretation of sedimentary sequences from other depositional environments. Non-random facies transitions were determined in the investigated strata and compared to the standard deep-water facies models to provide statistical evidence for the sedimentological interpretation of depositional processes. As a result, six genetic facies types, interpreted in terms of depositional processes, were identified. They comprise deposits of density flows, turbidity flows, suspension fallout as well as units which resulted from syn-or post-depositional deformation.

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Section: General Approachmentioning

confidence: 99%

Markov Chain analysis of turbiditic facies and flow dynamics (Magura Zone, Outer Western Carpathians, NW Slovakia)

Staňová¹,

Soták²,

Hudec³

2009

Geologica Carpathica

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“…The transition probability has long been used by geologists to analyze vertical successions (Vistelius, 1949;Krumbein and Dacey, 1969;Doveton, 1971;Miall, 1973). Figure 5 shows vertical transition probability measurements obtained for hydrofacies data with assumed correlation values of 0.7-1.0.…”

Section: Transition Probabilitymentioning

confidence: 99%

Nitrate Biogeochemistry and Reactive Transport in California Groundwater: LDRD Final Report

Esser¹,

Beller²,

Carle³

et al. 2006

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Introduction and BackgroundNitrate contamination is a significant threat to groundwater in California and other states. Successful groundwater management requires science-based simulation of future impacts in affected aquifers and science-based assessment of management practices designed to reduce nitrate levels. An important component of developing science-based approaches is the need to develop new and better tools for the characterization and quantification of biogeochemical reactions in the subsurface that control the fate and transport of nitrate in groundwater. When coupled with our ability to characterize groundwater flow and to model reactive transport, these new tools will allow an accurate assessment of the future distribution of nitrate in California aquifers and of the impact of different management practices on nitrate input to groundwater. Such assessment is vital to making cost-effective management and policy decisions regarding land use and groundwater remediation. Research ActivitiesOur research investigated the fate and transport of nitrate in groundwater at two scales, with an emphasis on microbial denitrification :• Field scale: denitrification in the shallow saturated zone at a dairy farm in the Central Valley, and • Basin scale: nitrate transport in two impacted basins.The research focused on developing and applying rapid methods to quantify denitrification in order to assess the role of denitrification in the shallow and deep saturated zone, and to allow quantitative assessment of the kinetics of microbiallymediated denitrification in groundwater systems.The research supported a number of students, including two LLNL postdocs.• Tracy LeTain, SEP, LLNL postdoc (Harry Beller, advisor) • Michael Singleton, CMS Directorate Postdoc (Bradley K. Esser advisor) -4-• Keara Moore, University of Arizona (Brenda Ekwurzel, advisor): Keara's work on nitrate source attribution and transport in the Livermore-Amador Basin formed the core of her M.S. thesis.• Brad Cey, University of Texas at Austin (Bridget Scanlon, advisor): Brad is using the dairy site that was developed with LDRD funding in his doctoral research.• Glenn Shaw, UC-Merced (Martha Conklin, advisor): Glenn participated in sampling at the dairy site, and spent a summer working at the lab. Technical accomplishments• We developed a quantitative polymerase chain reaction method for functional nitrite reductase genes to assay denitrifier populations in soil and in water; • We determined denitrification rate constants for an autotroph with Fe monosulfide; • We installed several multilevel wells and performed a synoptic water and soil survey at a Central Valley dairy that allowed us to demonstrate localized denitrification in stratified groundwater; • We used real-time qPCR to determine denitrifier populations in soil cores taken from the dairy wells, and demonstrated that denitrification was strongly localized at the oxic-anoxic interface at this site; • We developed a new tracer for manure lagoon seepage that allows us to distinguish wastewater ...

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“…It is considered valid to discuss a Markov chain only once a significant dependency on a previous state or states has been proven. Discussions of the limitations and possibilities of Markov chains can be found in Griffiths (1966), Krumbein (1967), Selley (1970), Doveton (1971), Schwarzacher (1969;1972), Miall (1973), Davis (1986), Walker (1979), Powers and Easterling (1982), Turk (1979), andHarper (1984).…”

Section: Introductionmentioning

confidence: 99%

Sedimentary Sequences Influenced by Submarine Fan Deposition: Argo Abyssal Plain, Northwestern Australia

Griffiths¹,

Kopaska-Merkel²,

Schott³

1992

Proceedings of the Ocean Drilling Program

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Transition probabilities from both core descriptions and wireline-log data from the Miocene section of Ocean Drilling Program Leg 123 Site 765 are examined. The data cover 270 m of section dominated by carbonate turbidites with varying silica content. Although the significant transitions do not echo the "classic" Bouma sequence, statistically significant cycles and pair-oscillation appear to be common when substitution of facies is taken into account. The sequence is zoned using both visual core-description and minimum-variance zonation of the wireline data. Significant transition probabilities are calculated, and syntaxes developed for both data sets. Syntactic pattern recognition is conducted using the wireline-log data to map the completeness of the section. These analyses support the hypothesis that the low average sedimentation rate during the Miocene (2 cm/k.y.) is more likely a result of sediment starvation or bypassing than active erosion, with its concomitant disturbance of regular and significant cycles.

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An Application of Markov Chain Analysis to the Ayrshire Coal Measures Succession

Cited by 44 publications

References 9 publications

Markov Chain analysis of turbiditic facies and flow dynamics (Magura Zone, Outer Western Carpathians, NW Slovakia)

Markov Chain analysis of turbiditic facies and flow dynamics (Magura Zone, Outer Western Carpathians, NW Slovakia)

Nitrate Biogeochemistry and Reactive Transport in California Groundwater: LDRD Final Report

Sedimentary Sequences Influenced by Submarine Fan Deposition: Argo Abyssal Plain, Northwestern Australia

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