American Heritage® Dictionary of the English Language, Fourth Edition
- n. The process of chemical and physical change in deposited sediment during its conversion to rock.
Century Dictionary and Cyclopedia
- n. In geology, the action of heated waters upon clastic sediments at the time of their deposition, assumed to explain the origin of crystalline schists: proposed by Gümbel (1888); employed by Walther to embrace those physical and chemical modifications which take place in a sediment from the time of its deposition to the time when it is modified by orogenic or volcanic forces, when it undergoes metamorphism.
“The book Diagenesis in Sediments was published in 1967, almost a hundred years after introduction of the term "diagenesis" in eological literature, i.e., in 1868, in Von Guembel's major work Geognostische Beschreibung des ostbayerischen Grenzge birges.”
“My interests include sedimentology, stratigraphy, and diagenesis - with an emphasis on deserts.”
“Examples include inefficient fat transfers in aquatic food webs (i.e., biomagnification) , the loss of organic carbon in settling particles or during sediment diagenesis , the decrease of snow surface area as crystals become more compact during aging or the entire loss of snow surface during melting , or cryogenic concentration during the formation of ice  (Fig. 8.23).”
“Or it might involve the diagenesis of organic matter into coal.”
“We use a model of ocean and sediment geochemistry, which includes new developments of iron limitation of biological production at the sea surface and anoxic diagenesis and its effect on CaCO3 preservation in the sediments, to evaluate the current proposals for explaining the glacial/interglacial pCO2 cycles within the context of the ocean carbon cycle.”
“The model incorporates a new sedimentary diagenesis component which simulates the role of CaCO3 compensation in determining atmospheric pCO2, and a new iron cycle component, which predicts the effect of atmospheric iron deposition on carbon uptake by photosynthesis.”
“Changes in biological production and water chemistry affect the diagenesis and burial of CaCO3, and hence pCO2.”
“The sequence errors observed are therefore not reflective of DNA diagenesis in the CPC98 but are most likely artefacts of the sequencing method used.”
“Espinoza said that with the increase of unconventional shale and tight sand development, there is a growing need for proppants with the fractional toughness of a lightweight ceramic and the diagenesis resistance of resin-coated sand.”
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Soil samples for stone soup.
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This quickly got bigger and weirder than originally intended, so now it's housing terms that relate to the study of dinosaurs and other prehistoric creatures. See also Dinosaurs, Pterosaurs, Ichthy...
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