Results 181 to 190 of about 8,049 (227)

Secular variation magnetostratigraphy

1986
This chapter concentrates on secular variation magnetostratigraphic dating applications within the past 10 000 years. It describes collection and measurement techniques which have been found useful in investigating lake sediments and presents type palaeomagnetic secular variation records of both declination and inclination, from seven regions of the ...
Roy Thompson, Frank Oldfield
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Mammals and Magnetostratigraphy

Journal of Geological Education, 1988
Magnetic polarity stratigraphy has become one of the most important tools for correlation of fossiliferous terrestrial deposits. Since 1975, many of the suitable fossiliferous terrestrial vertebrate-bearing sequences in North America, Eurasia, South America, and Africa, have been correlated with the magnetic polarity timescale.
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Magnetostratigraphy of the Jurassic/Cretaceous boundary

Geology, 1986
There is no internationally recognized standard for the Jurassic/Cretaceous boundary; a precise biostratigraphical correlation between different paleobiogeographic provinces is impossible due to barriers blocking faunal exchange. This problem may be overcome by using magnetic polarity events, which are globally isochronous.
James G. Ogg, William Lowrie
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Magnetostratigraphy of Sediments in Mammoth Cave, Kentucky

Science, 1982
Clastic sediment deposits found within the caves of Mammoth Cave National Park have yielded a magnetostratigraphic pattern of magnetic polarity reversals which indicates-that they were deposited over a range of at least 1 million and most likely 2 million years.
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Magnetostratigraphy of Jurassic Rocks

2015
Magnetic polarity scales younger than 160 Ma are derived from seafloor magnetic anomalies. For older times, such scales must be derived from polarity successions obtained in the continents yielding a precise age control such as that provided by ammonites, i.e., 1 myr.
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Dating, Magnetostratigraphy

2009
Krijgsman, Wout, Langereis, C. G.
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The Interrelationship between Magnetostratigraphy and Tephrochronology

1981
Magnetostratigraphy and tephrochronology represent complementary techniques for the determination of the ages of sedimentary sequences. Each method is subject to its own limitations. The magnetic polarity zonation of a sequence may not be sufficiently characteristic to correlate it to the magnetic polarity time scale.
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Magnetostratigraphy

Physics of the Earth and Planetary Interiors, 1990
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magnetostratigraphy, n.

2023
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C-29-R und die Magnetostratigraphie

1990
Bei dem Terminus C-29-R handelt es sich nicht um den Code fur einen Geheimagenten oder um die Bezeichnung fur eine geheime Strategie beim Fusballspiel. Es ist die Abkurzung fur Chron-Cenozoic-29-reversed, die magnetostratigraphische Epoche, die fur die Frage entscheidend geworden ist, ob die Dinosaurier und die alten Foraminiferen zur selben Zeit ...
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