Results 31 to 40 of about 25,995 (207)
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. +5 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
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
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
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
Diagenesis of archaeological bone and tooth [PDF]
, 2022 An understanding of the structural complexity of mineralised tissues is fundamental for exploration into the field of diagenesis. Here we review aspects of current and past research on bone and tooth diagenesis using the most comprehensive collection of ...
core +2 more sources
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
Burial Diagenesis in Limestones
, 1983 As carbonate sediments become buried, major changes in fabric, composition, rigidity and porosity tend to occur. Character of burial diagenesis is controlled by precursor sediment character, pore fluid, lithostatic and tectonic stresses, evolving aqueous
Wanless, Harold R, Harold R. Wanless
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Diagenesis in Progress, Progress in Diagenesis – The Skeletal Archives [PDF]
, 2023 Skeletal remains serve as first-hand witnesses of our past, providing crucial information for reconstructing important events in human and animal history.
Kevin Salesse +3 more
core +1 more source
Limits of calcium isotopes diagenesis in fossil bone and enamel
, 2023 International audienceDiagenesis has been recognized for decades to significantly alter the trace elements biogenic signatures in fossil tooth enamel and bone that are routinely used for paleobiological and paleoenvironmental reconstructions.
Hassler, Auguste +19 more
core +1 more source