Callovian


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Callovian

[kə′lōv·ē·ən]
(geology)
A stage in uppermost Middle or lowermost Upper Jurassic which marks a return to clayey sedimentation.
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References in periodicals archive ?
It is of geological importance as a large glacial meltwater channel and for sections of exposed Callovian age strata.
North Yorkshire farmer admits Wildlife & Countryside offences on Site of Special Scientific Interest
The cranial anatomy and taxonomy of Peloneustes philarchus (Sauropterygia, Pliosauridae) from the Peterborough Member (Callovian, Middle Jurassic) of the United Kingdom, Palaeontology.
A new large Pliosaurid from the Barremian (Lower Cretaceous) of Sachica, Boyaca, Colombia/Un nuevo Pliosaurido de gran tamano del Barremiano (Cretacico Inferior) de Sachica, Boyaca, Colombia
Response of foraminiferal facies to transgressive-regressive cycles in the Callovian of Northest Scotland, Journal of Foraminifera Research, 3, 324-349.
Biostratigraphy, depositional environment and sequence stratigraphy of Late Cretaceous clastic-evaporite-carbonate deposits, east of Central Iran, Bajestan
The increase in kaolinite contents in the Callovian suggests a subtropical humid climate with less prominent seasonal droughts and a higher input of siliclastics into the basin accompanied by a higher nutrient influx (Fursich et al., 2005).
Clay mineralogy of the Jurassic-tertiary sedimentary rocks of the Kopet Dagh basin (Northeastern Iran): implications for paleoclimate
It is Callovian and Oxfordian in age and reaches a thickness of more than 300 feet in the basinal area between the Ghawar and Khurais Fields.
Retiring old fields
He added that during the Middle Callovian 165 million years ago, much of Europe was covered by a shallow sea, creating a chain of large to small islands.
World's oldest super predator 'terrorized Europe'
(2009): Oxygen and carbon isotope composition of Callovian-Lower Oxfordian (Middle-Upper Jurassic) belemnite rostra from central Poland: A record of a Late Callovian global sea-level rise?
On the microstructure, growth pattern and original porosity of belemnite rostra: insights from calcitic Jurassic belemnites

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