Evaluating the influence of lake morphology, trophic status and diagenesis on geochemical profiles in lake sediments [PDF]
, 2010 Recent geochemical studies provide evidence that changes in vertical distributions of nutrients in lake sediments are driven by anthropogenic activities, based primarily on trends of increasing concentrations in upper sediment layers.
Pilditch, Conrad A. +2 more
core +1 more source
Study of Rock Types and Diagenetic Facies based on Velocity Deviation Log for Unraveling the Reservoir Heterogeneity in a Mixed Siliciclastic-Carbonate Reservoir, Southwest of Iran [PDF]
Journal of Petroleum Science and Technology, 2021 Investigating depositional and diagenetic factors that control pore systems properties of reservoir rocks is essential for unraveling reservoir heterogeneity and interpreting reservoir rock types.
Rahim Kadkhodaie
doaj +1 more source
Contrasting the crystallinity indicators of heated and diagenetically altered bone mineral [PDF]
, 2010 Modifications to bone mineral as a result of diagenesis or heating include a marked increase in crystallinity. Although these processes are not completely understood a number of simple, pragmatic approaches are in general use to quantify crystallinity ...
Chamberlain, A. +14 more
core +1 more source
Non-destructive analysis of pathological belemnite rostra by micro-CT techniques [PDF]
Acta Palaeontologica Polonica, 2020 Previously, palaeopathological features of fossil hardparts were often difficult to interpret because it was impossible to decipher their internal structure without destroying the specimens. We applied high-resolution computedtomo graphy (CT) to document
René Hoffmann +4 more
doaj +1 more source
Cementation scenarios for New Zealand Cenozoic nontropical limestones [PDF]
, 1996 Cenozoic limestones are widely distributed in New Zealand, especially in the Oligocene-earliest Miocene in both islands, and the Pliocene-Pleistocene in North Island.
Nelson, Campbell S. +3 more
core +1 more source
Frontiers in Earth Science, 2022 This paper presents an integrated paleomagnetic, rock magnetic and geochemical study of the Devonian Antrim shale in the Michigan Basin. Specimens were obtained from two unoriented vertical cores (named St.
Gerhard Heij, Richard Douglas Elmore
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Machine Learning for Reservoir Quality Prediction in Chlorite-Bearing Sandstone Reservoirs
GeosciencesWe have developed a generalisable machine learning framework for reservoir quality prediction in deeply buried clastic systems. Applied to the Lower Jurassic deltaic sandstones of the Tilje Formation (Halten Terrace, North Sea), the approach integrates ...
Thomas E. Nichols +5 more
doaj +1 more source
Petroleum Exploration and Development, 2015 Petrologic features, diagenetic processes and origins of different pore types of Upper Triassic Chang 7 (7th member of Yanchang Formation) tight sandstones in the Ordos Basin were analyzed based on cast thin sections, scanning electron microscope (SEM ...
Haihua ZHU +7 more
doaj +1 more source
Diagenetic processes in Quaternary fossil bones from tropical limestone caves
Scientific Reports, 2020 Quaternary fossils from limestone caves bear various diagenetic features due to the complex nature of sedimentary processes. However, few studies have addressed the problem of diagenetic changes in fossils from tropical-wet environments.
Daniel Vieira de Sousa +4 more
doaj +1 more source
Interpretation of Nitrogen Isotope Profiles in Petroleum Systems: A Review
Frontiers in Earth Science, 2021 Bulk sedimentary nitrogen isotope profiles are often used as proxies for depositional redox conditions, nitrogen cycling, and nutrient uptake in modern and ancient marine systems. The general preference in terms of analysis is that the sediments measured
Tracy M. Quan, Oyeleye O. Adeboye
doaj +1 more source