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Автор Petronotis, Katerina E.
Автор Gordon, Richard G.
Дата выпуска 1989
dc.description The skewness of magnetic anomalies corresponding to chrons 25 to 32r (56‐72 Ma) was investigated on 22 North Pacific profiles recording Pacific‐Kula spreading. From 172 estimates of skewness we find that it varies with age, with irregular scatter superimposed on a steady increase with age of 1.20±0.27°/m.y. Skewness differs significantly between anomalies differing in age by as little as a million years. An analysis of the errors in the skewness estimates indicates significant errors that are systematic for an anomaly of a given age, but varying irregularly with age. The significant increase with age of phase shift may reflect an increase with age of anomalous skewness, or the northward motion of the Pacific plate, or both. If it is due entirely to Pacific plate motion, and an age‐independent value of anomalous skewness of 14° found in prior studies is assumed, the rate of northward motion is 0.70±0.26°/m.y., four times faster than estimated from seamount paleomagnetic poles and paleolatitudes determined from sediment cores.
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Копирайт Copyright 1989 by the American Geophysical Union.
Тема Geomagnetism and Paleomagnetism
Тема Geomagnetism and Paleomagnetism: Spatial variations attributed to sea floor spreading
Тема Geomagnetism and Paleomagnetism: Paleomagnetism applied to tectonics
Тема Geomagnetism and Paleomagnetism: Reversals (process, time scale, magnetostratigraphy)
Тема Geomagnetism and Paleomagnetism: Time variations, secular and long term
Тема Geographic Location
Тема Information Related to Geographic Region: Pacific Ocean
Название Age dependence of skewness of magnetic anomalies above seafloor formed at the Pacific‐Kula Spreading Center
Тип article
DOI 10.1029/GL016i004p00315
Electronic ISSN 1944-8007
Print ISSN 0094-8276
Журнал Geophysical Research Letters
Том 16
Первая страница 315
Последняя страница 318
Аффилиация Petronotis, Katerina E.; Department of Geological Sciences, Northwestern University
Аффилиация Gordon, Richard G.; Department of Geological Sciences, Northwestern University
Выпуск 4
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